Stop running pub get at gclient sync time and fix build bugs

mojo/public/dart/third_party/analyzer/test/generated/resolver_test.dart

+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library engine.resolver_test;
+
+import 'dart:collection';
+
+import 'package:analyzer/src/context/context.dart' as newContext;
+import 'package:analyzer/src/generated/ast.dart';
+import 'package:analyzer/src/generated/element.dart';
+import 'package:analyzer/src/generated/element_resolver.dart';
+import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/generated/error.dart';
+import 'package:analyzer/src/generated/java_core.dart';
+import 'package:analyzer/src/generated/java_engine.dart';
+import 'package:analyzer/src/generated/java_engine_io.dart';
+import 'package:analyzer/src/generated/java_io.dart';
+import 'package:analyzer/src/generated/parser.dart' show ParserErrorCode;
+import 'package:analyzer/src/generated/resolver.dart';
+import 'package:analyzer/src/generated/scanner.dart';
+import 'package:analyzer/src/generated/sdk.dart';
+import 'package:analyzer/src/generated/sdk_io.dart' show DirectoryBasedDartSdk;
+import 'package:analyzer/src/generated/source_io.dart';
+import 'package:analyzer/src/generated/static_type_analyzer.dart';
+import 'package:analyzer/src/generated/testing/ast_factory.dart';
+import 'package:analyzer/src/generated/testing/element_factory.dart';
+import 'package:analyzer/src/generated/testing/test_type_provider.dart';
+import 'package:analyzer/src/generated/testing/token_factory.dart';
+import 'package:analyzer/src/generated/utilities_dart.dart';
+import 'package:unittest/unittest.dart';
+
+import '../reflective_tests.dart';
+import '../utils.dart';
+import 'test_support.dart';
+
+main() {
+  initializeTestEnvironment();
+  runReflectiveTests(AnalysisDeltaTest);
+  runReflectiveTests(ChangeSetTest);
+  runReflectiveTests(EnclosedScopeTest);
+  runReflectiveTests(LibraryImportScopeTest);
+  runReflectiveTests(LibraryScopeTest);
+  runReflectiveTests(ScopeTest);
+  runReflectiveTests(ElementResolverTest);
+  runReflectiveTests(InheritanceManagerTest);
+  if (!AnalysisEngine.instance.useTaskModel) {
+    runReflectiveTests(LibraryElementBuilderTest);
+  }
+  if (!AnalysisEngine.instance.useTaskModel) {
+    runReflectiveTests(LibraryResolver2Test);
+  }
+  if (!AnalysisEngine.instance.useTaskModel) {
+    runReflectiveTests(LibraryResolverTest);
+  }
+  runReflectiveTests(LibraryTest);
+  runReflectiveTests(StaticTypeAnalyzerTest);
+  runReflectiveTests(StaticTypeAnalyzer2Test);
+  runReflectiveTests(SubtypeManagerTest);
+  runReflectiveTests(TypeOverrideManagerTest);
+  runReflectiveTests(TypeProviderImplTest);
+  runReflectiveTests(TypeResolverVisitorTest);
+  runReflectiveTests(CheckedModeCompileTimeErrorCodeTest);
+  runReflectiveTests(ErrorResolverTest);
+  runReflectiveTests(HintCodeTest);
+  runReflectiveTests(MemberMapTest);
+  runReflectiveTests(NonHintCodeTest);
+  runReflectiveTests(SimpleResolverTest);
+  runReflectiveTests(StrictModeTest);
+  runReflectiveTests(TypePropagationTest);
+  runReflectiveTests(StrongModeTypePropagationTest);
+}
+
+/**
+ * The class `AnalysisContextFactory` defines utility methods used to create analysis contexts
+ * for testing purposes.
+ */
+class AnalysisContextFactory {
+  static String _DART_MATH = "dart:math";
+
+  static String _DART_INTERCEPTORS = "dart:_interceptors";
+
+  static String _DART_JS_HELPER = "dart:_js_helper";
+
+  /**
+   * Create an analysis context that has a fake core library already resolved.
+   * Return the context that was created.
+   */
+  static InternalAnalysisContext contextWithCore() {
+    if (AnalysisEngine.instance.useTaskModel) {
+      NewAnalysisContextForTests context = new NewAnalysisContextForTests();
+      return initContextWithCore(context);
+    }
+    AnalysisContextForTests context = new AnalysisContextForTests();
+    return initContextWithCore(context);
+  }
+
+  /**
+   * Create an analysis context that uses the given [options] and has a fake
+   * core library already resolved. Return the context that was created.
+   */
+  static InternalAnalysisContext contextWithCoreAndOptions(
+      AnalysisOptions options) {
+    if (AnalysisEngine.instance.useTaskModel) {
+      NewAnalysisContextForTests context = new NewAnalysisContextForTests();
+      context._internalSetAnalysisOptions(options);
+      return initContextWithCore(context);
+    }
+    AnalysisContextForTests context = new AnalysisContextForTests();
+    context._internalSetAnalysisOptions(options);
+    return initContextWithCore(context);
+  }
+
+  /**
+   * Initialize the given analysis context with a fake core library already resolved.
+   *
+   * @param context the context to be initialized (not `null`)
+   * @return the analysis context that was created
+   */
+  static InternalAnalysisContext initContextWithCore(
+      InternalAnalysisContext context) {
+    DirectoryBasedDartSdk sdk = new _AnalysisContextFactory_initContextWithCore(
+        new JavaFile("/fake/sdk"));
+    SourceFactory sourceFactory =
+        new SourceFactory([new DartUriResolver(sdk), new FileUriResolver()]);
+    context.sourceFactory = sourceFactory;
+    AnalysisContext coreContext = sdk.context;
+    //
+    // dart:core
+    //
+    TestTypeProvider provider = new TestTypeProvider();
+    CompilationUnitElementImpl coreUnit =
+        new CompilationUnitElementImpl("core.dart");
+    Source coreSource = sourceFactory.forUri(DartSdk.DART_CORE);
+    coreContext.setContents(coreSource, "");
+    coreUnit.librarySource = coreUnit.source = coreSource;
+    ClassElementImpl proxyClassElement = ElementFactory.classElement2("_Proxy");
+    ClassElement objectClassElement = provider.objectType.element;
+    coreUnit.types = <ClassElement>[
+      provider.boolType.element,
+      provider.deprecatedType.element,
+      provider.doubleType.element,
+      provider.functionType.element,
+      provider.intType.element,
+      provider.iterableType.element,
+      provider.iteratorType.element,
+      provider.listType.element,
+      provider.mapType.element,
+      provider.nullType.element,
+      provider.numType.element,
+      objectClassElement,
+      proxyClassElement,
+      provider.stackTraceType.element,
+      provider.stringType.element,
+      provider.symbolType.element,
+      provider.typeType.element
+    ];
+    coreUnit.functions = <FunctionElement>[
+      ElementFactory.functionElement3("identical", provider.boolType.element,
+          <ClassElement>[objectClassElement, objectClassElement], null),
+      ElementFactory.functionElement3("print", VoidTypeImpl.instance.element,
+          <ClassElement>[objectClassElement], null)
+    ];
+    TopLevelVariableElement proxyTopLevelVariableElt = ElementFactory
+        .topLevelVariableElement3("proxy", true, false, proxyClassElement.type);
+    ConstTopLevelVariableElementImpl deprecatedTopLevelVariableElt =
+        ElementFactory.topLevelVariableElement3(
+            "deprecated", true, false, provider.deprecatedType);
+    deprecatedTopLevelVariableElt.constantInitializer = AstFactory
+        .instanceCreationExpression2(
+            Keyword.CONST,
+            AstFactory.typeName(provider.deprecatedType.element),
+            [AstFactory.string2('next release')]);
+    coreUnit.accessors = <PropertyAccessorElement>[
+      proxyTopLevelVariableElt.getter,
+      deprecatedTopLevelVariableElt.getter
+    ];
+    coreUnit.topLevelVariables = <TopLevelVariableElement>[
+      proxyTopLevelVariableElt,
+      deprecatedTopLevelVariableElt
+    ];
+    LibraryElementImpl coreLibrary = new LibraryElementImpl.forNode(
+        coreContext, AstFactory.libraryIdentifier2(["dart", "core"]));
+    coreLibrary.definingCompilationUnit = coreUnit;
+    //
+    // dart:async
+    //
+    CompilationUnitElementImpl asyncUnit =
+        new CompilationUnitElementImpl("async.dart");
+    Source asyncSource = sourceFactory.forUri(DartSdk.DART_ASYNC);
+    coreContext.setContents(asyncSource, "");
+    asyncUnit.librarySource = asyncUnit.source = asyncSource;
+    // Future
+    ClassElementImpl futureElement =
+        ElementFactory.classElement2("Future", ["T"]);
+    InterfaceType futureType = futureElement.type;
+    //   factory Future.value([value])
+    ConstructorElementImpl futureConstructor =
+        ElementFactory.constructorElement2(futureElement, "value");
+    futureConstructor.parameters = <ParameterElement>[
+      ElementFactory.positionalParameter2("value", provider.dynamicType)
+    ];
+    futureConstructor.factory = true;
+    (futureConstructor.type as FunctionTypeImpl).typeArguments =
+        futureElement.type.typeArguments;
+    futureElement.constructors = <ConstructorElement>[futureConstructor];
+    //   Future then(onValue(T value), { Function onError });
+    List<ParameterElement> parameters = <ParameterElement>[
+      ElementFactory.requiredParameter2(
+          "value", futureElement.typeParameters[0].type)
+    ];
+    FunctionTypeAliasElementImpl aliasElement =
+        new FunctionTypeAliasElementImpl.forNode(null);
+    aliasElement.synthetic = true;
+    aliasElement.parameters = parameters;
+    aliasElement.returnType = provider.dynamicType;
+    aliasElement.enclosingElement = asyncUnit;
+    FunctionTypeImpl aliasType = new FunctionTypeImpl.forTypedef(aliasElement);
+    aliasElement.shareTypeParameters(futureElement.typeParameters);
+    aliasType.typeArguments = futureElement.type.typeArguments;
+    MethodElement thenMethod = ElementFactory.methodElementWithParameters(
+        "then", futureElement.type.typeArguments, futureType, [
+      ElementFactory.requiredParameter2("onValue", aliasType),
+      ElementFactory.namedParameter2("onError", provider.functionType)
+    ]);
+    futureElement.methods = <MethodElement>[thenMethod];
+    // Completer
+    ClassElementImpl completerElement =
+        ElementFactory.classElement2("Completer", ["T"]);
+    ConstructorElementImpl completerConstructor =
+        ElementFactory.constructorElement2(completerElement, null);
+    (completerConstructor.type as FunctionTypeImpl).typeArguments =
+        completerElement.type.typeArguments;
+    completerElement.constructors = <ConstructorElement>[completerConstructor];
+    // StreamSubscription
+    ClassElementImpl streamSubscriptionElement =
+        ElementFactory.classElement2("StreamSubscription", ["T"]);
+    // Stream
+    ClassElementImpl streamElement =
+        ElementFactory.classElement2("Stream", ["T"]);
+    streamElement.constructors = <ConstructorElement>[
+      ElementFactory.constructorElement2(streamElement, null)
+    ];
+    DartType returnType = streamSubscriptionElement.type
+        .substitute4(streamElement.type.typeArguments);
+    List<DartType> parameterTypes = <DartType>[
+      ElementFactory
+          .functionElement3('onData', VoidTypeImpl.instance.element,
+              <TypeDefiningElement>[streamElement.typeParameters[0]], null)
+          .type,
+    ];
+    // TODO(brianwilkerson) This is missing the optional parameters.
+    MethodElementImpl listenMethod =
+        ElementFactory.methodElement('listen', returnType, parameterTypes);
+    streamElement.methods = <MethodElement>[listenMethod];
+
+    asyncUnit.types = <ClassElement>[
+      completerElement,
+      futureElement,
+      streamElement
+    ];
+    LibraryElementImpl asyncLibrary = new LibraryElementImpl.forNode(
+        coreContext, AstFactory.libraryIdentifier2(["dart", "async"]));
+    asyncLibrary.definingCompilationUnit = asyncUnit;
+    //
+    // dart:html
+    //
+    CompilationUnitElementImpl htmlUnit =
+        new CompilationUnitElementImpl("html_dartium.dart");
+    Source htmlSource = sourceFactory.forUri(DartSdk.DART_HTML);
+    coreContext.setContents(htmlSource, "");
+    htmlUnit.librarySource = htmlUnit.source = htmlSource;
+    ClassElementImpl elementElement = ElementFactory.classElement2("Element");
+    InterfaceType elementType = elementElement.type;
+    ClassElementImpl canvasElement =
+        ElementFactory.classElement("CanvasElement", elementType);
+    ClassElementImpl contextElement =
+        ElementFactory.classElement2("CanvasRenderingContext");
+    InterfaceType contextElementType = contextElement.type;
+    ClassElementImpl context2dElement = ElementFactory.classElement(
+        "CanvasRenderingContext2D", contextElementType);
+    canvasElement.methods = <MethodElement>[
+      ElementFactory.methodElement(
+          "getContext", contextElementType, [provider.stringType])
+    ];
+    canvasElement.accessors = <PropertyAccessorElement>[
+      ElementFactory.getterElement("context2D", false, context2dElement.type)
+    ];
+    canvasElement.fields = canvasElement.accessors
+        .map((PropertyAccessorElement accessor) => accessor.variable)
+        .toList();
+    ClassElementImpl documentElement =
+        ElementFactory.classElement("Document", elementType);
+    ClassElementImpl htmlDocumentElement =
+        ElementFactory.classElement("HtmlDocument", documentElement.type);
+    htmlDocumentElement.methods = <MethodElement>[
+      ElementFactory.methodElement(
+          "query", elementType, <DartType>[provider.stringType])
+    ];
+    htmlUnit.types = <ClassElement>[
+      ElementFactory.classElement("AnchorElement", elementType),
+      ElementFactory.classElement("BodyElement", elementType),
+      ElementFactory.classElement("ButtonElement", elementType),
+      canvasElement,
+      contextElement,
+      context2dElement,
+      ElementFactory.classElement("DivElement", elementType),
+      documentElement,
+      elementElement,
+      htmlDocumentElement,
+      ElementFactory.classElement("InputElement", elementType),
+      ElementFactory.classElement("SelectElement", elementType)
+    ];
+    htmlUnit.functions = <FunctionElement>[
+      ElementFactory.functionElement3("query", elementElement,
+          <ClassElement>[provider.stringType.element], ClassElement.EMPTY_LIST)
+    ];
+    TopLevelVariableElementImpl document = ElementFactory
+        .topLevelVariableElement3(
+            "document", false, true, htmlDocumentElement.type);
+    htmlUnit.topLevelVariables = <TopLevelVariableElement>[document];
+    htmlUnit.accessors = <PropertyAccessorElement>[document.getter];
+    LibraryElementImpl htmlLibrary = new LibraryElementImpl.forNode(
+        coreContext, AstFactory.libraryIdentifier2(["dart", "dom", "html"]));
+    htmlLibrary.definingCompilationUnit = htmlUnit;
+    //
+    // dart:math
+    //
+    CompilationUnitElementImpl mathUnit =
+        new CompilationUnitElementImpl("math.dart");
+    Source mathSource = sourceFactory.forUri(_DART_MATH);
+    coreContext.setContents(mathSource, "");
+    mathUnit.librarySource = mathUnit.source = mathSource;
+    FunctionElement cosElement = ElementFactory.functionElement3(
+        "cos",
+        provider.doubleType.element,
+        <ClassElement>[provider.numType.element],
+        ClassElement.EMPTY_LIST);
+    TopLevelVariableElement ln10Element = ElementFactory
+        .topLevelVariableElement3("LN10", true, false, provider.doubleType);
+    TopLevelVariableElement piElement = ElementFactory.topLevelVariableElement3(
+        "PI", true, false, provider.doubleType);
+    ClassElementImpl randomElement = ElementFactory.classElement2("Random");
+    randomElement.abstract = true;
+    ConstructorElementImpl randomConstructor =
+        ElementFactory.constructorElement2(randomElement, null);
+    randomConstructor.factory = true;
+    ParameterElementImpl seedParam = new ParameterElementImpl("seed", 0);
+    seedParam.parameterKind = ParameterKind.POSITIONAL;
+    seedParam.type = provider.intType;
+    randomConstructor.parameters = <ParameterElement>[seedParam];
+    randomElement.constructors = <ConstructorElement>[randomConstructor];
+    FunctionElement sinElement = ElementFactory.functionElement3(
+        "sin",
+        provider.doubleType.element,
+        <ClassElement>[provider.numType.element],
+        ClassElement.EMPTY_LIST);
+    FunctionElement sqrtElement = ElementFactory.functionElement3(
+        "sqrt",
+        provider.doubleType.element,
+        <ClassElement>[provider.numType.element],
+        ClassElement.EMPTY_LIST);
+    mathUnit.accessors = <PropertyAccessorElement>[
+      ln10Element.getter,
+      piElement.getter
+    ];
+    mathUnit.functions = <FunctionElement>[cosElement, sinElement, sqrtElement];
+    mathUnit.topLevelVariables = <TopLevelVariableElement>[
+      ln10Element,
+      piElement
+    ];
+    mathUnit.types = <ClassElement>[randomElement];
+    LibraryElementImpl mathLibrary = new LibraryElementImpl.forNode(
+        coreContext, AstFactory.libraryIdentifier2(["dart", "math"]));
+    mathLibrary.definingCompilationUnit = mathUnit;
+    //
+    // Set empty sources for the rest of the libraries.
+    //
+    Source source = sourceFactory.forUri(_DART_INTERCEPTORS);
+    coreContext.setContents(source, "");
+    source = sourceFactory.forUri(_DART_JS_HELPER);
+    coreContext.setContents(source, "");
+    //
+    // Record the elements.
+    //
+    HashMap<Source, LibraryElement> elementMap =
+        new HashMap<Source, LibraryElement>();
+    elementMap[coreSource] = coreLibrary;
+    elementMap[asyncSource] = asyncLibrary;
+    elementMap[htmlSource] = htmlLibrary;
+    elementMap[mathSource] = mathLibrary;
+    context.recordLibraryElements(elementMap);
+    return context;
+  }
+
+  /**
+   * Create an analysis context that has a fake core library already resolved.
+   * Return the context that was created.
+   */
+  static AnalysisContextImpl oldContextWithCore() {
+    AnalysisContextForTests context = new AnalysisContextForTests();
+    return initContextWithCore(context);
+  }
+
+  /**
+   * Create an analysis context that uses the given [options] and has a fake
+   * core library already resolved. Return the context that was created.
+   */
+  static AnalysisContextImpl oldContextWithCoreAndOptions(
+      AnalysisOptions options) {
+    AnalysisContextForTests context = new AnalysisContextForTests();
+    context._internalSetAnalysisOptions(options);
+    return initContextWithCore(context);
+  }
+}
+
+/**
+ * Instances of the class `AnalysisContextForTests` implement an analysis context that has a
+ * fake SDK that is much smaller and faster for testing purposes.
+ */
+class AnalysisContextForTests extends AnalysisContextImpl {
+  @override
+  void set analysisOptions(AnalysisOptions options) {
+    AnalysisOptions currentOptions = analysisOptions;
+    bool needsRecompute = currentOptions.analyzeFunctionBodiesPredicate !=
+            options.analyzeFunctionBodiesPredicate ||
+        currentOptions.generateImplicitErrors !=
+            options.generateImplicitErrors ||
+        currentOptions.generateSdkErrors != options.generateSdkErrors ||
+        currentOptions.dart2jsHint != options.dart2jsHint ||
+        (currentOptions.hint && !options.hint) ||
+        currentOptions.preserveComments != options.preserveComments ||
+        currentOptions.enableStrictCallChecks != options.enableStrictCallChecks;
+    if (needsRecompute) {
+      fail(
+          "Cannot set options that cause the sources to be reanalyzed in a test context");
+    }
+    super.analysisOptions = options;
+  }
+
+  @override
+  bool exists(Source source) =>
+      super.exists(source) || sourceFactory.dartSdk.context.exists(source);
+
+  @override
+  TimestampedData<String> getContents(Source source) {
+    if (source.isInSystemLibrary) {
+      return sourceFactory.dartSdk.context.getContents(source);
+    }
+    return super.getContents(source);
+  }
+
+  @override
+  int getModificationStamp(Source source) {
+    if (source.isInSystemLibrary) {
+      return sourceFactory.dartSdk.context.getModificationStamp(source);
+    }
+    return super.getModificationStamp(source);
+  }
+
+  /**
+   * Set the analysis options, even if they would force re-analysis. This method should only be
+   * invoked before the fake SDK is initialized.
+   *
+   * @param options the analysis options to be set
+   */
+  void _internalSetAnalysisOptions(AnalysisOptions options) {
+    super.analysisOptions = options;
+  }
+}
+
+/**
+ * Helper for creating and managing single [AnalysisContext].
+ */
+class AnalysisContextHelper {
+  AnalysisContext context;
+
+  /**
+   * Creates new [AnalysisContext] using [AnalysisContextFactory].
+   */
+  AnalysisContextHelper([AnalysisOptionsImpl options]) {
+    if (options == null) {
+      options = new AnalysisOptionsImpl();
+    }
+    options.cacheSize = 256;
+    context = AnalysisContextFactory.contextWithCoreAndOptions(options);
+  }
+
+  Source addSource(String path, String code) {
+    Source source = new FileBasedSource(FileUtilities2.createFile(path));
+    if (path.endsWith(".dart") || path.endsWith(".html")) {
+      ChangeSet changeSet = new ChangeSet();
+      changeSet.addedSource(source);
+      context.applyChanges(changeSet);
+    }
+    context.setContents(source, code);
+    return source;
+  }
+
+  CompilationUnitElement getDefiningUnitElement(Source source) =>
+      context.getCompilationUnitElement(source, source);
+
+  CompilationUnit resolveDefiningUnit(Source source) {
+    LibraryElement libraryElement = context.computeLibraryElement(source);
+    return context.resolveCompilationUnit(source, libraryElement);
+  }
+
+  void runTasks() {
+    AnalysisResult result = context.performAnalysisTask();
+    while (result.changeNotices != null) {
+      result = context.performAnalysisTask();
+    }
+  }
+}
+
+@reflectiveTest
+class AnalysisDeltaTest extends EngineTestCase {
+  TestSource source1 = new TestSource('/1.dart');
+  TestSource source2 = new TestSource('/2.dart');
+  TestSource source3 = new TestSource('/3.dart');
+
+  void test_getAddedSources() {
+    AnalysisDelta delta = new AnalysisDelta();
+    delta.setAnalysisLevel(source1, AnalysisLevel.ALL);
+    delta.setAnalysisLevel(source2, AnalysisLevel.ERRORS);
+    delta.setAnalysisLevel(source3, AnalysisLevel.NONE);
+    List<Source> addedSources = delta.addedSources;
+    expect(addedSources, hasLength(2));
+    expect(addedSources, unorderedEquals([source1, source2]));
+  }
+
+  void test_getAnalysisLevels() {
+    AnalysisDelta delta = new AnalysisDelta();
+    expect(delta.analysisLevels.length, 0);
+  }
+
+  void test_setAnalysisLevel() {
+    AnalysisDelta delta = new AnalysisDelta();
+    delta.setAnalysisLevel(source1, AnalysisLevel.ALL);
+    delta.setAnalysisLevel(source2, AnalysisLevel.ERRORS);
+    Map<Source, AnalysisLevel> levels = delta.analysisLevels;
+    expect(levels.length, 2);
+    expect(levels[source1], AnalysisLevel.ALL);
+    expect(levels[source2], AnalysisLevel.ERRORS);
+  }
+
+  void test_toString() {
+    AnalysisDelta delta = new AnalysisDelta();
+    delta.setAnalysisLevel(new TestSource(), AnalysisLevel.ALL);
+    String result = delta.toString();
+    expect(result, isNotNull);
+    expect(result.length > 0, isTrue);
+  }
+}
+
+@reflectiveTest
+class ChangeSetTest extends EngineTestCase {
+  void test_changedContent() {
+    TestSource source = new TestSource();
+    String content = "";
+    ChangeSet changeSet = new ChangeSet();
+    changeSet.changedContent(source, content);
+    expect(changeSet.addedSources, hasLength(0));
+    expect(changeSet.changedSources, hasLength(0));
+    Map<Source, String> map = changeSet.changedContents;
+    expect(map, hasLength(1));
+    expect(map[source], same(content));
+    expect(changeSet.changedRanges, hasLength(0));
+    expect(changeSet.deletedSources, hasLength(0));
+    expect(changeSet.removedSources, hasLength(0));
+    expect(changeSet.removedContainers, hasLength(0));
+  }
+
+  void test_changedRange() {
+    TestSource source = new TestSource();
+    String content = "";
+    ChangeSet changeSet = new ChangeSet();
+    changeSet.changedRange(source, content, 1, 2, 3);
+    expect(changeSet.addedSources, hasLength(0));
+    expect(changeSet.changedSources, hasLength(0));
+    expect(changeSet.changedContents, hasLength(0));
+    Map<Source, ChangeSet_ContentChange> map = changeSet.changedRanges;
+    expect(map, hasLength(1));
+    ChangeSet_ContentChange change = map[source];
+    expect(change, isNotNull);
+    expect(change.contents, content);
+    expect(change.offset, 1);
+    expect(change.oldLength, 2);
+    expect(change.newLength, 3);
+    expect(changeSet.deletedSources, hasLength(0));
+    expect(changeSet.removedSources, hasLength(0));
+    expect(changeSet.removedContainers, hasLength(0));
+  }
+
+  void test_toString() {
+    ChangeSet changeSet = new ChangeSet();
+    changeSet.addedSource(new TestSource());
+    changeSet.changedSource(new TestSource());
+    changeSet.changedContent(new TestSource(), "");
+    changeSet.changedRange(new TestSource(), "", 0, 0, 0);
+    changeSet.deletedSource(new TestSource());
+    changeSet.removedSource(new TestSource());
+    changeSet
+        .removedContainer(new SourceContainer_ChangeSetTest_test_toString());
+    expect(changeSet.toString(), isNotNull);
+  }
+}
+
+@reflectiveTest
+class CheckedModeCompileTimeErrorCodeTest extends ResolverTestCase {
+  void test_fieldFormalParameterAssignableToField_extends() {
+    // According to checked-mode type checking rules, a value of type B is
+    // assignable to a field of type A, because B extends A (and hence is a
+    // subtype of A).
+    Source source = addSource(r'''
+class A {
+  const A();
+}
+class B extends A {
+  const B();
+}
+class C {
+  final A a;
+  const C(this.a);
+}
+var v = const C(const B());''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterAssignableToField_fieldType_unresolved_null() {
+    // Null always passes runtime type checks, even when the type is
+    // unresolved.
+    Source source = addSource(r'''
+class A {
+  final Unresolved x;
+  const A(String this.x);
+}
+var v = const A(null);''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticWarningCode.UNDEFINED_CLASS]);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterAssignableToField_implements() {
+    // According to checked-mode type checking rules, a value of type B is
+    // assignable to a field of type A, because B implements A (and hence is a
+    // subtype of A).
+    Source source = addSource(r'''
+class A {}
+class B implements A {
+  const B();
+}
+class C {
+  final A a;
+  const C(this.a);
+}
+var v = const C(const B());''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterAssignableToField_list_dynamic() {
+    // [1, 2, 3] has type List<dynamic>, which is a subtype of List<int>.
+    Source source = addSource(r'''
+class A {
+  const A(List<int> x);
+}
+var x = const A(const [1, 2, 3]);''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterAssignableToField_list_nonDynamic() {
+    // <int>[1, 2, 3] has type List<int>, which is a subtype of List<num>.
+    Source source = addSource(r'''
+class A {
+  const A(List<num> x);
+}
+var x = const A(const <int>[1, 2, 3]);''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterAssignableToField_map_dynamic() {
+    // {1: 2} has type Map<dynamic, dynamic>, which is a subtype of
+    // Map<int, int>.
+    Source source = addSource(r'''
+class A {
+  const A(Map<int, int> x);
+}
+var x = const A(const {1: 2});''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterAssignableToField_map_keyDifferent() {
+    // <int, int>{1: 2} has type Map<int, int>, which is a subtype of
+    // Map<num, int>.
+    Source source = addSource(r'''
+class A {
+  const A(Map<num, int> x);
+}
+var x = const A(const <int, int>{1: 2});''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterAssignableToField_map_valueDifferent() {
+    // <int, int>{1: 2} has type Map<int, int>, which is a subtype of
+    // Map<int, num>.
+    Source source = addSource(r'''
+class A {
+  const A(Map<int, num> x);
+}
+var x = const A(const <int, int>{1: 2});''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterAssignableToField_notype() {
+    // If a field is declared without a type, then any value may be assigned to
+    // it.
+    Source source = addSource(r'''
+class A {
+  final x;
+  const A(this.x);
+}
+var v = const A(5);''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterAssignableToField_null() {
+    // Null is assignable to anything.
+    Source source = addSource(r'''
+class A {
+  final int x;
+  const A(this.x);
+}
+var v = const A(null);''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterAssignableToField_typedef() {
+    // foo has the runtime type dynamic -> dynamic, so it should be assignable
+    // to A.f.
+    Source source = addSource(r'''
+typedef String Int2String(int x);
+class A {
+  final Int2String f;
+  const A(this.f);
+}
+foo(x) => 1;
+var v = const A(foo);''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterAssignableToField_typeSubstitution() {
+    // foo has the runtime type dynamic -> dynamic, so it should be assignable
+    // to A.f.
+    Source source = addSource(r'''
+class A<T> {
+  final T x;
+  const A(this.x);
+}
+var v = const A<int>(3);''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterNotAssignableToField() {
+    Source source = addSource(r'''
+class A {
+  final int x;
+  const A(this.x);
+}
+var v = const A('foo');''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH,
+      StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterNotAssignableToField_extends() {
+    // According to checked-mode type checking rules, a value of type A is not
+    // assignable to a field of type B, because B extends A (the subtyping
+    // relationship is in the wrong direction).
+    Source source = addSource(r'''
+class A {
+  const A();
+}
+class B extends A {
+  const B();
+}
+class C {
+  final B b;
+  const C(this.b);
+}
+var v = const C(const A());''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterNotAssignableToField_fieldType() {
+    Source source = addSource(r'''
+class A {
+  final int x;
+  const A(String this.x);
+}
+var v = const A('foo');''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH,
+      StaticWarningCode.FIELD_INITIALIZING_FORMAL_NOT_ASSIGNABLE
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterNotAssignableToField_fieldType_unresolved() {
+    Source source = addSource(r'''
+class A {
+  final Unresolved x;
+  const A(String this.x);
+}
+var v = const A('foo');''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH,
+      StaticWarningCode.UNDEFINED_CLASS
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterNotAssignableToField_implements() {
+    // According to checked-mode type checking rules, a value of type A is not
+    // assignable to a field of type B, because B implements A (the subtyping
+    // relationship is in the wrong direction).
+    Source source = addSource(r'''
+class A {
+  const A();
+}
+class B implements A {}
+class C {
+  final B b;
+  const C(this.b);
+}
+var v = const C(const A());''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterNotAssignableToField_list() {
+    // <num>[1, 2, 3] has type List<num>, which is not a subtype of List<int>.
+    Source source = addSource(r'''
+class A {
+  const A(List<int> x);
+}
+var x = const A(const <num>[1, 2, 3]);''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterNotAssignableToField_map_keyMismatch() {
+    // <num, int>{1: 2} has type Map<num, int>, which is not a subtype of
+    // Map<int, int>.
+    Source source = addSource(r'''
+class A {
+  const A(Map<int, int> x);
+}
+var x = const A(const <num, int>{1: 2});''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterNotAssignableToField_map_valueMismatch() {
+    // <int, num>{1: 2} has type Map<int, num>, which is not a subtype of
+    // Map<int, int>.
+    Source source = addSource(r'''
+class A {
+  const A(Map<int, int> x);
+}
+var x = const A(const <int, num>{1: 2});''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterNotAssignableToField_optional() {
+    Source source = addSource(r'''
+class A {
+  final int x;
+  const A([this.x = 'foo']);
+}
+var v = const A();''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH,
+      StaticTypeWarningCode.INVALID_ASSIGNMENT
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameterNotAssignableToField_typedef() {
+    // foo has the runtime type String -> int, so it should not be assignable
+    // to A.f (A.f requires it to be int -> String).
+    Source source = addSource(r'''
+typedef String Int2String(int x);
+class A {
+  final Int2String f;
+  const A(this.f);
+}
+int foo(String x) => 1;
+var v = const A(foo);''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH,
+      StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldInitializerNotAssignable() {
+    Source source = addSource(r'''
+class A {
+  final int x;
+  const A() : x = '';
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_FIELD_INITIALIZER_NOT_ASSIGNABLE,
+      StaticWarningCode.FIELD_INITIALIZER_NOT_ASSIGNABLE
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldTypeMismatch() {
+    Source source = addSource(r'''
+class A {
+  const A(x) : y = x;
+  final int y;
+}
+var v = const A('foo');''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_FIELD_TYPE_MISMATCH
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldTypeMismatch_generic() {
+    Source source = addSource(r'''
+class C<T> {
+  final T x = y;
+  const C();
+}
+const y = 1;
+var v = const C<String>();
+''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_FIELD_TYPE_MISMATCH,
+      HintCode.INVALID_ASSIGNMENT
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldTypeMismatch_unresolved() {
+    Source source = addSource(r'''
+class A {
+  const A(x) : y = x;
+  final Unresolved y;
+}
+var v = const A('foo');''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_FIELD_TYPE_MISMATCH,
+      StaticWarningCode.UNDEFINED_CLASS
+    ]);
+    verify([source]);
+  }
+
+  void test_fieldTypeOk_generic() {
+    Source source = addSource(r'''
+class C<T> {
+  final T x = y;
+  const C();
+}
+const y = 1;
+var v = const C<int>();
+''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.INVALID_ASSIGNMENT]);
+    verify([source]);
+  }
+
+  void test_fieldTypeOk_null() {
+    Source source = addSource(r'''
+class A {
+  const A(x) : y = x;
+  final int y;
+}
+var v = const A(null);''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_fieldTypeOk_unresolved_null() {
+    // Null always passes runtime type checks, even when the type is
+    // unresolved.
+    Source source = addSource(r'''
+class A {
+  const A(x) : y = x;
+  final Unresolved y;
+}
+var v = const A(null);''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticWarningCode.UNDEFINED_CLASS]);
+    verify([source]);
+  }
+
+  void test_listElementTypeNotAssignable() {
+    Source source = addSource("var v = const <String> [42];");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE,
+      StaticWarningCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE
+    ]);
+    verify([source]);
+  }
+
+  void test_mapKeyTypeNotAssignable() {
+    Source source = addSource("var v = const <String, int > {1 : 2};");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.MAP_KEY_TYPE_NOT_ASSIGNABLE,
+      StaticWarningCode.MAP_KEY_TYPE_NOT_ASSIGNABLE
+    ]);
+    verify([source]);
+  }
+
+  void test_mapValueTypeNotAssignable() {
+    Source source = addSource("var v = const <String, String> {'a' : 2};");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.MAP_VALUE_TYPE_NOT_ASSIGNABLE,
+      StaticWarningCode.MAP_VALUE_TYPE_NOT_ASSIGNABLE
+    ]);
+    verify([source]);
+  }
+
+  void test_parameterAssignable_null() {
+    // Null is assignable to anything.
+    Source source = addSource(r'''
+class A {
+  const A(int x);
+}
+var v = const A(null);''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_parameterAssignable_typeSubstitution() {
+    Source source = addSource(r'''
+class A<T> {
+  const A(T x);
+}
+var v = const A<int>(3);''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_parameterAssignable_undefined_null() {
+    // Null always passes runtime type checks, even when the type is
+    // unresolved.
+    Source source = addSource(r'''
+class A {
+  const A(Unresolved x);
+}
+var v = const A(null);''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticWarningCode.UNDEFINED_CLASS]);
+    verify([source]);
+  }
+
+  void test_parameterNotAssignable() {
+    Source source = addSource(r'''
+class A {
+  const A(int x);
+}
+var v = const A('foo');''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH,
+      StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE
+    ]);
+    verify([source]);
+  }
+
+  void test_parameterNotAssignable_typeSubstitution() {
+    Source source = addSource(r'''
+class A<T> {
+  const A(T x);
+}
+var v = const A<int>('foo');''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH,
+      StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE
+    ]);
+    verify([source]);
+  }
+
+  void test_parameterNotAssignable_undefined() {
+    Source source = addSource(r'''
+class A {
+  const A(Unresolved x);
+}
+var v = const A('foo');''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH,
+      StaticWarningCode.UNDEFINED_CLASS
+    ]);
+    verify([source]);
+  }
+
+  void test_redirectingConstructor_paramTypeMismatch() {
+    Source source = addSource(r'''
+class A {
+  const A.a1(x) : this.a2(x);
+  const A.a2(String x);
+}
+var v = const A.a1(0);''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH
+    ]);
+    verify([source]);
+  }
+
+  void test_topLevelVarAssignable_null() {
+    Source source = addSource("const int x = null;");
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_topLevelVarAssignable_undefined_null() {
+    // Null always passes runtime type checks, even when the type is
+    // unresolved.
+    Source source = addSource("const Unresolved x = null;");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticWarningCode.UNDEFINED_CLASS]);
+    verify([source]);
+  }
+
+  void test_topLevelVarNotAssignable() {
+    Source source = addSource("const int x = 'foo';");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.VARIABLE_TYPE_MISMATCH,
+      StaticTypeWarningCode.INVALID_ASSIGNMENT
+    ]);
+    verify([source]);
+  }
+
+  void test_topLevelVarNotAssignable_undefined() {
+    Source source = addSource("const Unresolved x = 'foo';");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.VARIABLE_TYPE_MISMATCH,
+      StaticWarningCode.UNDEFINED_CLASS
+    ]);
+    verify([source]);
+  }
+}
+
+@reflectiveTest
+class ElementResolverTest extends EngineTestCase {
+  /**
+   * The error listener to which errors will be reported.
+   */
+  GatheringErrorListener _listener;
+
+  /**
+   * The type provider used to access the types.
+   */
+  TestTypeProvider _typeProvider;
+
+  /**
+   * The library containing the code being resolved.
+   */
+  LibraryElementImpl _definingLibrary;
+
+  /**
+   * The resolver visitor that maintains the state for the resolver.
+   */
+  ResolverVisitor _visitor;
+
+  /**
+   * The resolver being used to resolve the test cases.
+   */
+  ElementResolver _resolver;
+
+  void fail_visitExportDirective_combinators() {
+    fail("Not yet tested");
+    // Need to set up the exported library so that the identifier can be
+    // resolved.
+    ExportDirective directive = AstFactory.exportDirective2(null, [
+      AstFactory.hideCombinator2(["A"])
+    ]);
+    _resolveNode(directive);
+    _listener.assertNoErrors();
+  }
+
+  void fail_visitFunctionExpressionInvocation() {
+    fail("Not yet tested");
+    _listener.assertNoErrors();
+  }
+
+  void fail_visitImportDirective_combinators_noPrefix() {
+    fail("Not yet tested");
+    // Need to set up the imported library so that the identifier can be
+    // resolved.
+    ImportDirective directive = AstFactory.importDirective3(null, null, [
+      AstFactory.showCombinator2(["A"])
+    ]);
+    _resolveNode(directive);
+    _listener.assertNoErrors();
+  }
+
+  void fail_visitImportDirective_combinators_prefix() {
+    fail("Not yet tested");
+    // Need to set up the imported library so that the identifiers can be
+    // resolved.
+    String prefixName = "p";
+    _definingLibrary.imports = <ImportElement>[
+      ElementFactory.importFor(null, ElementFactory.prefix(prefixName))
+    ];
+    ImportDirective directive = AstFactory.importDirective3(null, prefixName, [
+      AstFactory.showCombinator2(["A"]),
+      AstFactory.hideCombinator2(["B"])
+    ]);
+    _resolveNode(directive);
+    _listener.assertNoErrors();
+  }
+
+  void fail_visitRedirectingConstructorInvocation() {
+    fail("Not yet tested");
+    _listener.assertNoErrors();
+  }
+
+  @override
+  void setUp() {
+    _listener = new GatheringErrorListener();
+    _typeProvider = new TestTypeProvider();
+    _resolver = _createResolver();
+  }
+
+  void test_lookUpMethodInInterfaces() {
+    InterfaceType intType = _typeProvider.intType;
+    //
+    // abstract class A { int operator[](int index); }
+    //
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    MethodElement operator =
+        ElementFactory.methodElement("[]", intType, [intType]);
+    classA.methods = <MethodElement>[operator];
+    //
+    // class B implements A {}
+    //
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.interfaces = <InterfaceType>[classA.type];
+    //
+    // class C extends Object with B {}
+    //
+    ClassElementImpl classC = ElementFactory.classElement2("C");
+    classC.mixins = <InterfaceType>[classB.type];
+    //
+    // class D extends C {}
+    //
+    ClassElementImpl classD = ElementFactory.classElement("D", classC.type);
+    //
+    // D a;
+    // a[i];
+    //
+    SimpleIdentifier array = AstFactory.identifier3("a");
+    array.staticType = classD.type;
+    IndexExpression expression =
+        AstFactory.indexExpression(array, AstFactory.identifier3("i"));
+    expect(_resolveIndexExpression(expression), same(operator));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitAssignmentExpression_compound() {
+    InterfaceType intType = _typeProvider.intType;
+    SimpleIdentifier leftHandSide = AstFactory.identifier3("a");
+    leftHandSide.staticType = intType;
+    AssignmentExpression assignment = AstFactory.assignmentExpression(
+        leftHandSide, TokenType.PLUS_EQ, AstFactory.integer(1));
+    _resolveNode(assignment);
+    expect(
+        assignment.staticElement, same(getMethod(_typeProvider.numType, "+")));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitAssignmentExpression_simple() {
+    AssignmentExpression expression = AstFactory.assignmentExpression(
+        AstFactory.identifier3("x"), TokenType.EQ, AstFactory.integer(0));
+    _resolveNode(expression);
+    expect(expression.staticElement, isNull);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_bangEq() {
+    // String i;
+    // var j;
+    // i == j
+    InterfaceType stringType = _typeProvider.stringType;
+    SimpleIdentifier left = AstFactory.identifier3("i");
+    left.staticType = stringType;
+    BinaryExpression expression = AstFactory.binaryExpression(
+        left, TokenType.BANG_EQ, AstFactory.identifier3("j"));
+    _resolveNode(expression);
+    var stringElement = stringType.element;
+    expect(expression.staticElement, isNotNull);
+    expect(
+        expression.staticElement,
+        stringElement.lookUpMethod(
+            TokenType.EQ_EQ.lexeme, stringElement.library));
+    expect(expression.propagatedElement, isNull);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_eq() {
+    // String i;
+    // var j;
+    // i == j
+    InterfaceType stringType = _typeProvider.stringType;
+    SimpleIdentifier left = AstFactory.identifier3("i");
+    left.staticType = stringType;
+    BinaryExpression expression = AstFactory.binaryExpression(
+        left, TokenType.EQ_EQ, AstFactory.identifier3("j"));
+    _resolveNode(expression);
+    var stringElement = stringType.element;
+    expect(
+        expression.staticElement,
+        stringElement.lookUpMethod(
+            TokenType.EQ_EQ.lexeme, stringElement.library));
+    expect(expression.propagatedElement, isNull);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_plus() {
+    // num i;
+    // var j;
+    // i + j
+    InterfaceType numType = _typeProvider.numType;
+    SimpleIdentifier left = AstFactory.identifier3("i");
+    left.staticType = numType;
+    BinaryExpression expression = AstFactory.binaryExpression(
+        left, TokenType.PLUS, AstFactory.identifier3("j"));
+    _resolveNode(expression);
+    expect(expression.staticElement, getMethod(numType, "+"));
+    expect(expression.propagatedElement, isNull);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_plus_propagatedElement() {
+    // var i = 1;
+    // var j;
+    // i + j
+    InterfaceType numType = _typeProvider.numType;
+    SimpleIdentifier left = AstFactory.identifier3("i");
+    left.propagatedType = numType;
+    BinaryExpression expression = AstFactory.binaryExpression(
+        left, TokenType.PLUS, AstFactory.identifier3("j"));
+    _resolveNode(expression);
+    expect(expression.staticElement, isNull);
+    expect(expression.propagatedElement, getMethod(numType, "+"));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBreakStatement_withLabel() {
+    // loop: while (true) {
+    //   break loop;
+    // }
+    String label = "loop";
+    LabelElementImpl labelElement =
+        new LabelElementImpl(AstFactory.identifier3(label), false, false);
+    BreakStatement breakStatement = AstFactory.breakStatement2(label);
+    Expression condition = AstFactory.booleanLiteral(true);
+    WhileStatement whileStatement =
+        AstFactory.whileStatement(condition, breakStatement);
+    expect(_resolveBreak(breakStatement, labelElement, whileStatement),
+        same(labelElement));
+    expect(breakStatement.target, same(whileStatement));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBreakStatement_withoutLabel() {
+    BreakStatement statement = AstFactory.breakStatement();
+    _resolveStatement(statement, null, null);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitConstructorName_named() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String constructorName = "a";
+    ConstructorElement constructor =
+        ElementFactory.constructorElement2(classA, constructorName);
+    classA.constructors = <ConstructorElement>[constructor];
+    ConstructorName name = AstFactory.constructorName(
+        AstFactory.typeName(classA), constructorName);
+    _resolveNode(name);
+    expect(name.staticElement, same(constructor));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitConstructorName_unnamed() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String constructorName = null;
+    ConstructorElement constructor =
+        ElementFactory.constructorElement2(classA, constructorName);
+    classA.constructors = <ConstructorElement>[constructor];
+    ConstructorName name = AstFactory.constructorName(
+        AstFactory.typeName(classA), constructorName);
+    _resolveNode(name);
+    expect(name.staticElement, same(constructor));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitContinueStatement_withLabel() {
+    // loop: while (true) {
+    //   continue loop;
+    // }
+    String label = "loop";
+    LabelElementImpl labelElement =
+        new LabelElementImpl(AstFactory.identifier3(label), false, false);
+    ContinueStatement continueStatement = AstFactory.continueStatement(label);
+    Expression condition = AstFactory.booleanLiteral(true);
+    WhileStatement whileStatement =
+        AstFactory.whileStatement(condition, continueStatement);
+    expect(_resolveContinue(continueStatement, labelElement, whileStatement),
+        same(labelElement));
+    expect(continueStatement.target, same(whileStatement));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitContinueStatement_withoutLabel() {
+    ContinueStatement statement = AstFactory.continueStatement();
+    _resolveStatement(statement, null, null);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitEnumDeclaration() {
+    ClassElementImpl enumElement =
+        ElementFactory.enumElement(_typeProvider, ('E'));
+    EnumDeclaration enumNode = AstFactory.enumDeclaration2('E', []);
+    Annotation annotationNode =
+        AstFactory.annotation(AstFactory.identifier3('a'));
+    annotationNode.element = ElementFactory.classElement2('A');
+    enumNode.metadata.add(annotationNode);
+    enumNode.name.staticElement = enumElement;
+    _resolveNode(enumNode);
+    List<ElementAnnotation> metadata = enumElement.metadata;
+    expect(metadata, hasLength(1));
+  }
+
+  void test_visitExportDirective_noCombinators() {
+    ExportDirective directive = AstFactory.exportDirective2(null);
+    directive.element = ElementFactory
+        .exportFor(ElementFactory.library(_definingLibrary.context, "lib"));
+    _resolveNode(directive);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFieldFormalParameter() {
+    String fieldName = "f";
+    InterfaceType intType = _typeProvider.intType;
+    FieldElementImpl fieldElement =
+        ElementFactory.fieldElement(fieldName, false, false, false, intType);
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.fields = <FieldElement>[fieldElement];
+    FieldFormalParameter parameter =
+        AstFactory.fieldFormalParameter2(fieldName);
+    FieldFormalParameterElementImpl parameterElement =
+        ElementFactory.fieldFormalParameter(parameter.identifier);
+    parameterElement.field = fieldElement;
+    parameterElement.type = intType;
+    parameter.identifier.staticElement = parameterElement;
+    _resolveInClass(parameter, classA);
+    expect(parameter.element.type, same(intType));
+  }
+
+  void test_visitImportDirective_noCombinators_noPrefix() {
+    ImportDirective directive = AstFactory.importDirective3(null, null);
+    directive.element = ElementFactory.importFor(
+        ElementFactory.library(_definingLibrary.context, "lib"), null);
+    _resolveNode(directive);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitImportDirective_noCombinators_prefix() {
+    String prefixName = "p";
+    ImportElement importElement = ElementFactory.importFor(
+        ElementFactory.library(_definingLibrary.context, "lib"),
+        ElementFactory.prefix(prefixName));
+    _definingLibrary.imports = <ImportElement>[importElement];
+    ImportDirective directive = AstFactory.importDirective3(null, prefixName);
+    directive.element = importElement;
+    _resolveNode(directive);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitImportDirective_withCombinators() {
+    ShowCombinator combinator = AstFactory.showCombinator2(["A", "B", "C"]);
+    ImportDirective directive =
+        AstFactory.importDirective3(null, null, [combinator]);
+    LibraryElementImpl library =
+        ElementFactory.library(_definingLibrary.context, "lib");
+    TopLevelVariableElementImpl varA =
+        ElementFactory.topLevelVariableElement2("A");
+    TopLevelVariableElementImpl varB =
+        ElementFactory.topLevelVariableElement2("B");
+    TopLevelVariableElementImpl varC =
+        ElementFactory.topLevelVariableElement2("C");
+    CompilationUnitElementImpl unit =
+        library.definingCompilationUnit as CompilationUnitElementImpl;
+    unit.accessors = <PropertyAccessorElement>[
+      varA.getter,
+      varA.setter,
+      varB.getter,
+      varC.setter
+    ];
+    unit.topLevelVariables = <TopLevelVariableElement>[varA, varB, varC];
+    directive.element = ElementFactory.importFor(library, null);
+    _resolveNode(directive);
+    expect(combinator.shownNames[0].staticElement, same(varA));
+    expect(combinator.shownNames[1].staticElement, same(varB));
+    expect(combinator.shownNames[2].staticElement, same(varC));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitIndexExpression_get() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    InterfaceType intType = _typeProvider.intType;
+    MethodElement getter =
+        ElementFactory.methodElement("[]", intType, [intType]);
+    classA.methods = <MethodElement>[getter];
+    SimpleIdentifier array = AstFactory.identifier3("a");
+    array.staticType = classA.type;
+    IndexExpression expression =
+        AstFactory.indexExpression(array, AstFactory.identifier3("i"));
+    expect(_resolveIndexExpression(expression), same(getter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitIndexExpression_set() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    InterfaceType intType = _typeProvider.intType;
+    MethodElement setter =
+        ElementFactory.methodElement("[]=", intType, [intType]);
+    classA.methods = <MethodElement>[setter];
+    SimpleIdentifier array = AstFactory.identifier3("a");
+    array.staticType = classA.type;
+    IndexExpression expression =
+        AstFactory.indexExpression(array, AstFactory.identifier3("i"));
+    AstFactory.assignmentExpression(
+        expression, TokenType.EQ, AstFactory.integer(0));
+    expect(_resolveIndexExpression(expression), same(setter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitInstanceCreationExpression_named() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String constructorName = "a";
+    ConstructorElement constructor =
+        ElementFactory.constructorElement2(classA, constructorName);
+    classA.constructors = <ConstructorElement>[constructor];
+    ConstructorName name = AstFactory.constructorName(
+        AstFactory.typeName(classA), constructorName);
+    name.staticElement = constructor;
+    InstanceCreationExpression creation =
+        AstFactory.instanceCreationExpression(Keyword.NEW, name);
+    _resolveNode(creation);
+    expect(creation.staticElement, same(constructor));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitInstanceCreationExpression_unnamed() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String constructorName = null;
+    ConstructorElement constructor =
+        ElementFactory.constructorElement2(classA, constructorName);
+    classA.constructors = <ConstructorElement>[constructor];
+    ConstructorName name = AstFactory.constructorName(
+        AstFactory.typeName(classA), constructorName);
+    name.staticElement = constructor;
+    InstanceCreationExpression creation =
+        AstFactory.instanceCreationExpression(Keyword.NEW, name);
+    _resolveNode(creation);
+    expect(creation.staticElement, same(constructor));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitInstanceCreationExpression_unnamed_namedParameter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String constructorName = null;
+    ConstructorElementImpl constructor =
+        ElementFactory.constructorElement2(classA, constructorName);
+    String parameterName = "a";
+    ParameterElement parameter = ElementFactory.namedParameter(parameterName);
+    constructor.parameters = <ParameterElement>[parameter];
+    classA.constructors = <ConstructorElement>[constructor];
+    ConstructorName name = AstFactory.constructorName(
+        AstFactory.typeName(classA), constructorName);
+    name.staticElement = constructor;
+    InstanceCreationExpression creation = AstFactory.instanceCreationExpression(
+        Keyword.NEW,
+        name,
+        [AstFactory.namedExpression2(parameterName, AstFactory.integer(0))]);
+    _resolveNode(creation);
+    expect(creation.staticElement, same(constructor));
+    expect(
+        (creation.argumentList.arguments[0] as NamedExpression)
+            .name
+            .label
+            .staticElement,
+        same(parameter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitMethodInvocation() {
+    InterfaceType numType = _typeProvider.numType;
+    SimpleIdentifier left = AstFactory.identifier3("i");
+    left.staticType = numType;
+    String methodName = "abs";
+    MethodInvocation invocation = AstFactory.methodInvocation(left, methodName);
+    _resolveNode(invocation);
+    expect(invocation.methodName.staticElement,
+        same(getMethod(numType, methodName)));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitMethodInvocation_namedParameter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    String parameterName = "p";
+    MethodElementImpl method = ElementFactory.methodElement(methodName, null);
+    ParameterElement parameter = ElementFactory.namedParameter(parameterName);
+    method.parameters = <ParameterElement>[parameter];
+    classA.methods = <MethodElement>[method];
+    SimpleIdentifier left = AstFactory.identifier3("i");
+    left.staticType = classA.type;
+    MethodInvocation invocation = AstFactory.methodInvocation(left, methodName,
+        [AstFactory.namedExpression2(parameterName, AstFactory.integer(0))]);
+    _resolveNode(invocation);
+    expect(invocation.methodName.staticElement, same(method));
+    expect(
+        (invocation.argumentList.arguments[0] as NamedExpression)
+            .name
+            .label
+            .staticElement,
+        same(parameter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPostfixExpression() {
+    InterfaceType numType = _typeProvider.numType;
+    SimpleIdentifier operand = AstFactory.identifier3("i");
+    operand.staticType = numType;
+    PostfixExpression expression =
+        AstFactory.postfixExpression(operand, TokenType.PLUS_PLUS);
+    _resolveNode(expression);
+    expect(expression.staticElement, getMethod(numType, "+"));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixedIdentifier_dynamic() {
+    DartType dynamicType = _typeProvider.dynamicType;
+    SimpleIdentifier target = AstFactory.identifier3("a");
+    VariableElementImpl variable = ElementFactory.localVariableElement(target);
+    variable.type = dynamicType;
+    target.staticElement = variable;
+    target.staticType = dynamicType;
+    PrefixedIdentifier identifier =
+        AstFactory.identifier(target, AstFactory.identifier3("b"));
+    _resolveNode(identifier);
+    expect(identifier.staticElement, isNull);
+    expect(identifier.identifier.staticElement, isNull);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixedIdentifier_nonDynamic() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "b";
+    PropertyAccessorElement getter =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getter];
+    SimpleIdentifier target = AstFactory.identifier3("a");
+    VariableElementImpl variable = ElementFactory.localVariableElement(target);
+    variable.type = classA.type;
+    target.staticElement = variable;
+    target.staticType = classA.type;
+    PrefixedIdentifier identifier =
+        AstFactory.identifier(target, AstFactory.identifier3(getterName));
+    _resolveNode(identifier);
+    expect(identifier.staticElement, same(getter));
+    expect(identifier.identifier.staticElement, same(getter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixedIdentifier_staticClassMember_getter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    // set accessors
+    String propName = "b";
+    PropertyAccessorElement getter =
+        ElementFactory.getterElement(propName, false, _typeProvider.intType);
+    PropertyAccessorElement setter =
+        ElementFactory.setterElement(propName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getter, setter];
+    // prepare "A.m"
+    SimpleIdentifier target = AstFactory.identifier3("A");
+    target.staticElement = classA;
+    target.staticType = classA.type;
+    PrefixedIdentifier identifier =
+        AstFactory.identifier(target, AstFactory.identifier3(propName));
+    // resolve
+    _resolveNode(identifier);
+    expect(identifier.staticElement, same(getter));
+    expect(identifier.identifier.staticElement, same(getter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixedIdentifier_staticClassMember_method() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    // set methods
+    String propName = "m";
+    MethodElement method =
+        ElementFactory.methodElement("m", _typeProvider.intType);
+    classA.methods = <MethodElement>[method];
+    // prepare "A.m"
+    SimpleIdentifier target = AstFactory.identifier3("A");
+    target.staticElement = classA;
+    target.staticType = classA.type;
+    PrefixedIdentifier identifier =
+        AstFactory.identifier(target, AstFactory.identifier3(propName));
+    AstFactory.assignmentExpression(
+        identifier, TokenType.EQ, AstFactory.nullLiteral());
+    // resolve
+    _resolveNode(identifier);
+    expect(identifier.staticElement, same(method));
+    expect(identifier.identifier.staticElement, same(method));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixedIdentifier_staticClassMember_setter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    // set accessors
+    String propName = "b";
+    PropertyAccessorElement getter =
+        ElementFactory.getterElement(propName, false, _typeProvider.intType);
+    PropertyAccessorElement setter =
+        ElementFactory.setterElement(propName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getter, setter];
+    // prepare "A.b = null"
+    SimpleIdentifier target = AstFactory.identifier3("A");
+    target.staticElement = classA;
+    target.staticType = classA.type;
+    PrefixedIdentifier identifier =
+        AstFactory.identifier(target, AstFactory.identifier3(propName));
+    AstFactory.assignmentExpression(
+        identifier, TokenType.EQ, AstFactory.nullLiteral());
+    // resolve
+    _resolveNode(identifier);
+    expect(identifier.staticElement, same(setter));
+    expect(identifier.identifier.staticElement, same(setter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixExpression() {
+    InterfaceType numType = _typeProvider.numType;
+    SimpleIdentifier operand = AstFactory.identifier3("i");
+    operand.staticType = numType;
+    PrefixExpression expression =
+        AstFactory.prefixExpression(TokenType.PLUS_PLUS, operand);
+    _resolveNode(expression);
+    expect(expression.staticElement, getMethod(numType, "+"));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPropertyAccess_getter_identifier() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "b";
+    PropertyAccessorElement getter =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getter];
+    SimpleIdentifier target = AstFactory.identifier3("a");
+    target.staticType = classA.type;
+    PropertyAccess access = AstFactory.propertyAccess2(target, getterName);
+    _resolveNode(access);
+    expect(access.propertyName.staticElement, same(getter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPropertyAccess_getter_super() {
+    //
+    // class A {
+    //  int get b;
+    // }
+    // class B {
+    //   ... super.m ...
+    // }
+    //
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "b";
+    PropertyAccessorElement getter =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getter];
+    SuperExpression target = AstFactory.superExpression();
+    target.staticType = ElementFactory.classElement("B", classA.type).type;
+    PropertyAccess access = AstFactory.propertyAccess2(target, getterName);
+    AstFactory.methodDeclaration2(
+        null,
+        null,
+        null,
+        null,
+        AstFactory.identifier3("m"),
+        AstFactory.formalParameterList(),
+        AstFactory.expressionFunctionBody(access));
+    _resolveNode(access);
+    expect(access.propertyName.staticElement, same(getter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPropertyAccess_setter_this() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String setterName = "b";
+    PropertyAccessorElement setter =
+        ElementFactory.setterElement(setterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[setter];
+    ThisExpression target = AstFactory.thisExpression();
+    target.staticType = classA.type;
+    PropertyAccess access = AstFactory.propertyAccess2(target, setterName);
+    AstFactory.assignmentExpression(
+        access, TokenType.EQ, AstFactory.integer(0));
+    _resolveNode(access);
+    expect(access.propertyName.staticElement, same(setter));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSimpleIdentifier_classScope() {
+    InterfaceType doubleType = _typeProvider.doubleType;
+    String fieldName = "NAN";
+    SimpleIdentifier node = AstFactory.identifier3(fieldName);
+    _resolveInClass(node, doubleType.element);
+    expect(node.staticElement, getGetter(doubleType, fieldName));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSimpleIdentifier_dynamic() {
+    SimpleIdentifier node = AstFactory.identifier3("dynamic");
+    _resolveIdentifier(node);
+    expect(node.staticElement, same(_typeProvider.dynamicType.element));
+    expect(node.staticType, same(_typeProvider.typeType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSimpleIdentifier_lexicalScope() {
+    SimpleIdentifier node = AstFactory.identifier3("i");
+    VariableElementImpl element = ElementFactory.localVariableElement(node);
+    expect(_resolveIdentifier(node, [element]), same(element));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSimpleIdentifier_lexicalScope_field_setter() {
+    InterfaceType intType = _typeProvider.intType;
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String fieldName = "a";
+    FieldElement field =
+        ElementFactory.fieldElement(fieldName, false, false, false, intType);
+    classA.fields = <FieldElement>[field];
+    classA.accessors = <PropertyAccessorElement>[field.getter, field.setter];
+    SimpleIdentifier node = AstFactory.identifier3(fieldName);
+    AstFactory.assignmentExpression(node, TokenType.EQ, AstFactory.integer(0));
+    _resolveInClass(node, classA);
+    Element element = node.staticElement;
+    EngineTestCase.assertInstanceOf((obj) => obj is PropertyAccessorElement,
+        PropertyAccessorElement, element);
+    expect((element as PropertyAccessorElement).isSetter, isTrue);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSuperConstructorInvocation() {
+    ClassElementImpl superclass = ElementFactory.classElement2("A");
+    ConstructorElementImpl superConstructor =
+        ElementFactory.constructorElement2(superclass, null);
+    superclass.constructors = <ConstructorElement>[superConstructor];
+    ClassElementImpl subclass =
+        ElementFactory.classElement("B", superclass.type);
+    ConstructorElementImpl subConstructor =
+        ElementFactory.constructorElement2(subclass, null);
+    subclass.constructors = <ConstructorElement>[subConstructor];
+    SuperConstructorInvocation invocation =
+        AstFactory.superConstructorInvocation();
+    _resolveInClass(invocation, subclass);
+    expect(invocation.staticElement, superConstructor);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSuperConstructorInvocation_namedParameter() {
+    ClassElementImpl superclass = ElementFactory.classElement2("A");
+    ConstructorElementImpl superConstructor =
+        ElementFactory.constructorElement2(superclass, null);
+    String parameterName = "p";
+    ParameterElement parameter = ElementFactory.namedParameter(parameterName);
+    superConstructor.parameters = <ParameterElement>[parameter];
+    superclass.constructors = <ConstructorElement>[superConstructor];
+    ClassElementImpl subclass =
+        ElementFactory.classElement("B", superclass.type);
+    ConstructorElementImpl subConstructor =
+        ElementFactory.constructorElement2(subclass, null);
+    subclass.constructors = <ConstructorElement>[subConstructor];
+    SuperConstructorInvocation invocation = AstFactory
+        .superConstructorInvocation([
+      AstFactory.namedExpression2(parameterName, AstFactory.integer(0))
+    ]);
+    _resolveInClass(invocation, subclass);
+    expect(invocation.staticElement, superConstructor);
+    expect(
+        (invocation.argumentList.arguments[0] as NamedExpression)
+            .name
+            .label
+            .staticElement,
+        same(parameter));
+    _listener.assertNoErrors();
+  }
+
+  /**
+   * Create the resolver used by the tests.
+   *
+   * @return the resolver that was created
+   */
+  ElementResolver _createResolver() {
+    InternalAnalysisContext context = AnalysisContextFactory.contextWithCore();
+    FileBasedSource source =
+        new FileBasedSource(FileUtilities2.createFile("/test.dart"));
+    CompilationUnitElementImpl definingCompilationUnit =
+        new CompilationUnitElementImpl("test.dart");
+    definingCompilationUnit.librarySource =
+        definingCompilationUnit.source = source;
+    _definingLibrary = ElementFactory.library(context, "test");
+    _definingLibrary.definingCompilationUnit = definingCompilationUnit;
+    Library library = new Library(context, _listener, source);
+    library.libraryElement = _definingLibrary;
+    _visitor = new ResolverVisitor(
+        library.libraryElement, source, _typeProvider, library.errorListener,
+        nameScope: library.libraryScope,
+        inheritanceManager: library.inheritanceManager);
+    try {
+      return _visitor.elementResolver;
+    } catch (exception) {
+      throw new IllegalArgumentException(
+          "Could not create resolver", exception);
+    }
+  }
+
+  /**
+   * Return the element associated with the label of [statement] after the
+   * resolver has resolved it.  [labelElement] is the label element to be
+   * defined in the statement's label scope, and [labelTarget] is the statement
+   * the label resolves to.
+   */
+  Element _resolveBreak(BreakStatement statement, LabelElementImpl labelElement,
+      Statement labelTarget) {
+    _resolveStatement(statement, labelElement, labelTarget);
+    return statement.label.staticElement;
+  }
+
+  /**
+   * Return the element associated with the label [statement] after the
+   * resolver has resolved it.  [labelElement] is the label element to be
+   * defined in the statement's label scope, and [labelTarget] is the AST node
+   * the label resolves to.
+   *
+   * @param statement the statement to be resolved
+   * @param labelElement the label element to be defined in the statement's label scope
+   * @return the element to which the statement's label was resolved
+   */
+  Element _resolveContinue(ContinueStatement statement,
+      LabelElementImpl labelElement, AstNode labelTarget) {
+    _resolveStatement(statement, labelElement, labelTarget);
+    return statement.label.staticElement;
+  }
+
+  /**
+   * Return the element associated with the given identifier after the resolver has resolved the
+   * identifier.
+   *
+   * @param node the expression to be resolved
+   * @param definedElements the elements that are to be defined in the scope in which the element is
+   *          being resolved
+   * @return the element to which the expression was resolved
+   */
+  Element _resolveIdentifier(Identifier node, [List<Element> definedElements]) {
+    _resolveNode(node, definedElements);
+    return node.staticElement;
+  }
+
+  /**
+   * Return the element associated with the given identifier after the resolver has resolved the
+   * identifier.
+   *
+   * @param node the expression to be resolved
+   * @param enclosingClass the element representing the class enclosing the identifier
+   * @return the element to which the expression was resolved
+   */
+  void _resolveInClass(AstNode node, ClassElement enclosingClass) {
+    try {
+      Scope outerScope = _visitor.nameScope;
+      try {
+        _visitor.enclosingClass = enclosingClass;
+        EnclosedScope innerScope = new ClassScope(
+            new TypeParameterScope(outerScope, enclosingClass), enclosingClass);
+        _visitor.nameScope = innerScope;
+        node.accept(_resolver);
+      } finally {
+        _visitor.enclosingClass = null;
+        _visitor.nameScope = outerScope;
+      }
+    } catch (exception) {
+      throw new IllegalArgumentException("Could not resolve node", exception);
+    }
+  }
+
+  /**
+   * Return the element associated with the given expression after the resolver has resolved the
+   * expression.
+   *
+   * @param node the expression to be resolved
+   * @param definedElements the elements that are to be defined in the scope in which the element is
+   *          being resolved
+   * @return the element to which the expression was resolved
+   */
+  Element _resolveIndexExpression(IndexExpression node,
+      [List<Element> definedElements]) {
+    _resolveNode(node, definedElements);
+    return node.staticElement;
+  }
+
+  /**
+   * Return the element associated with the given identifier after the resolver has resolved the
+   * identifier.
+   *
+   * @param node the expression to be resolved
+   * @param definedElements the elements that are to be defined in the scope in which the element is
+   *          being resolved
+   * @return the element to which the expression was resolved
+   */
+  void _resolveNode(AstNode node, [List<Element> definedElements]) {
+    try {
+      Scope outerScope = _visitor.nameScope;
+      try {
+        EnclosedScope innerScope = new EnclosedScope(outerScope);
+        if (definedElements != null) {
+          for (Element element in definedElements) {
+            innerScope.define(element);
+          }
+        }
+        _visitor.nameScope = innerScope;
+        node.accept(_resolver);
+      } finally {
+        _visitor.nameScope = outerScope;
+      }
+    } catch (exception) {
+      throw new IllegalArgumentException("Could not resolve node", exception);
+    }
+  }
+
+  /**
+   * Return the element associated with the label of the given statement after the resolver has
+   * resolved the statement.
+   *
+   * @param statement the statement to be resolved
+   * @param labelElement the label element to be defined in the statement's label scope
+   * @return the element to which the statement's label was resolved
+   */
+  void _resolveStatement(
+      Statement statement, LabelElementImpl labelElement, AstNode labelTarget) {
+    try {
+      LabelScope outerScope = _visitor.labelScope;
+      try {
+        LabelScope innerScope;
+        if (labelElement == null) {
+          innerScope = outerScope;
+        } else {
+          innerScope = new LabelScope(
+              outerScope, labelElement.name, labelTarget, labelElement);
+        }
+        _visitor.labelScope = innerScope;
+        statement.accept(_resolver);
+      } finally {
+        _visitor.labelScope = outerScope;
+      }
+    } catch (exception) {
+      throw new IllegalArgumentException("Could not resolve node", exception);
+    }
+  }
+}
+
+@reflectiveTest
+class EnclosedScopeTest extends ResolverTestCase {
+  void test_define_duplicate() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    Scope rootScope =
+        new Scope_EnclosedScopeTest_test_define_duplicate(listener);
+    EnclosedScope scope = new EnclosedScope(rootScope);
+    VariableElement element1 =
+        ElementFactory.localVariableElement(AstFactory.identifier3("v1"));
+    VariableElement element2 =
+        ElementFactory.localVariableElement(AstFactory.identifier3("v1"));
+    scope.define(element1);
+    scope.define(element2);
+    listener.assertErrorsWithSeverities([ErrorSeverity.ERROR]);
+  }
+
+  void test_define_normal() {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    Scope rootScope = new Scope_EnclosedScopeTest_test_define_normal(listener);
+    EnclosedScope outerScope = new EnclosedScope(rootScope);
+    EnclosedScope innerScope = new EnclosedScope(outerScope);
+    VariableElement element1 =
+        ElementFactory.localVariableElement(AstFactory.identifier3("v1"));
+    VariableElement element2 =
+        ElementFactory.localVariableElement(AstFactory.identifier3("v2"));
+    outerScope.define(element1);
+    innerScope.define(element2);
+    listener.assertNoErrors();
+  }
+}
+
+@reflectiveTest
+class ErrorResolverTest extends ResolverTestCase {
+  void test_breakLabelOnSwitchMember() {
+    Source source = addSource(r'''
+class A {
+  void m(int i) {
+    switch (i) {
+      l: case 0:
+        break;
+      case 1:
+        break l;
+    }
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [ResolverErrorCode.BREAK_LABEL_ON_SWITCH_MEMBER]);
+    verify([source]);
+  }
+
+  void test_continueLabelOnSwitch() {
+    Source source = addSource(r'''
+class A {
+  void m(int i) {
+    l: switch (i) {
+      case 0:
+        continue l;
+    }
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [ResolverErrorCode.CONTINUE_LABEL_ON_SWITCH]);
+    verify([source]);
+  }
+
+  void test_enclosingElement_invalidLocalFunction() {
+    Source source = addSource(r'''
+class C {
+  C() {
+    int get x => 0;
+  }
+}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    var unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    var types = unit.types;
+    expect(types, isNotNull);
+    expect(types, hasLength(1));
+    var type = types[0];
+    expect(type, isNotNull);
+    var constructors = type.constructors;
+    expect(constructors, isNotNull);
+    expect(constructors, hasLength(1));
+    ConstructorElement constructor = constructors[0];
+    expect(constructor, isNotNull);
+    List<FunctionElement> functions = constructor.functions;
+    expect(functions, isNotNull);
+    expect(functions, hasLength(1));
+    expect(functions[0].enclosingElement, constructor);
+    assertErrors(source, [ParserErrorCode.GETTER_IN_FUNCTION]);
+  }
+}
+
+@reflectiveTest
+class HintCodeTest extends ResolverTestCase {
+  void fail_deadCode_statementAfterRehrow() {
+    Source source = addSource(r'''
+f() {
+  try {
+    var one = 1;
+  } catch (e) {
+    rethrow;
+    var two = 2;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void fail_deadCode_statementAfterThrow() {
+    Source source = addSource(r'''
+f() {
+  var one = 1;
+  throw 'Stop here';
+  var two = 2;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void fail_isInt() {
+    Source source = addSource("var v = 1 is int;");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.IS_INT]);
+    verify([source]);
+  }
+
+  void fail_isNotInt() {
+    Source source = addSource("var v = 1 is! int;");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.IS_NOT_INT]);
+    verify([source]);
+  }
+
+  void fail_overrideEqualsButNotHashCode() {
+    Source source = addSource(r'''
+class A {
+  bool operator ==(x) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.OVERRIDE_EQUALS_BUT_NOT_HASH_CODE]);
+    verify([source]);
+  }
+
+  void fail_unusedImport_as_equalPrefixes() {
+    // See todo at ImportsVerifier.prefixElementMap.
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart' as one;
+import 'lib2.dart' as one;
+one.A a;''');
+    Source source2 = addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class A {}''');
+    Source source3 = addNamedSource(
+        "/lib2.dart",
+        r'''
+library lib2;
+class B {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_IMPORT]);
+    assertNoErrors(source2);
+    assertNoErrors(source3);
+    verify([source, source2, source3]);
+  }
+
+  void test_argumentTypeNotAssignable_functionType() {
+    Source source = addSource(r'''
+m() {
+  var a = new A();
+  a.n(() => 0);
+}
+class A {
+  n(void f(int i)) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.ARGUMENT_TYPE_NOT_ASSIGNABLE]);
+    verify([source]);
+  }
+
+  void test_argumentTypeNotAssignable_message() {
+    // The implementation of HintCode.ARGUMENT_TYPE_NOT_ASSIGNABLE assumes that
+    // StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE has the same message.
+    expect(StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE.message,
+        HintCode.ARGUMENT_TYPE_NOT_ASSIGNABLE.message);
+  }
+
+  void test_argumentTypeNotAssignable_type() {
+    Source source = addSource(r'''
+m() {
+  var i = '';
+  n(i);
+}
+n(int i) {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.ARGUMENT_TYPE_NOT_ASSIGNABLE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_conditionalElse() {
+    Source source = addSource(r'''
+f() {
+  true ? 1 : 2;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_conditionalElse_nested() {
+    // test that a dead else-statement can't generate additional violations
+    Source source = addSource(r'''
+f() {
+  true ? true : false && false;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_conditionalIf() {
+    Source source = addSource(r'''
+f() {
+  false ? 1 : 2;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_conditionalIf_nested() {
+    // test that a dead then-statement can't generate additional violations
+    Source source = addSource(r'''
+f() {
+  false ? false && false : true;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_else() {
+    Source source = addSource(r'''
+f() {
+  if(true) {} else {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_else_nested() {
+    // test that a dead else-statement can't generate additional violations
+    Source source = addSource(r'''
+f() {
+  if(true) {} else {if (false) {}}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_if() {
+    Source source = addSource(r'''
+f() {
+  if(false) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_if_nested() {
+    // test that a dead then-statement can't generate additional violations
+    Source source = addSource(r'''
+f() {
+  if(false) {if(false) {}}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_while() {
+    Source source = addSource(r'''
+f() {
+  while(false) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_while_nested() {
+    // test that a dead while body can't generate additional violations
+    Source source = addSource(r'''
+f() {
+  while(false) {if(false) {}}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadCatch_catchFollowingCatch() {
+    Source source = addSource(r'''
+class A {}
+f() {
+  try {} catch (e) {} catch (e) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE_CATCH_FOLLOWING_CATCH]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadCatch_catchFollowingCatch_nested() {
+    // test that a dead catch clause can't generate additional violations
+    Source source = addSource(r'''
+class A {}
+f() {
+  try {} catch (e) {} catch (e) {if(false) {}}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE_CATCH_FOLLOWING_CATCH]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadCatch_catchFollowingCatch_object() {
+    Source source = addSource(r'''
+f() {
+  try {} on Object catch (e) {} catch (e) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE_CATCH_FOLLOWING_CATCH]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadCatch_catchFollowingCatch_object_nested() {
+    // test that a dead catch clause can't generate additional violations
+    Source source = addSource(r'''
+f() {
+  try {} on Object catch (e) {} catch (e) {if(false) {}}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE_CATCH_FOLLOWING_CATCH]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadCatch_onCatchSubtype() {
+    Source source = addSource(r'''
+class A {}
+class B extends A {}
+f() {
+  try {} on A catch (e) {} on B catch (e) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE_ON_CATCH_SUBTYPE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadCatch_onCatchSubtype_nested() {
+    // test that a dead catch clause can't generate additional violations
+    Source source = addSource(r'''
+class A {}
+class B extends A {}
+f() {
+  try {} on A catch (e) {} on B catch (e) {if(false) {}}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE_ON_CATCH_SUBTYPE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadOperandLHS_and() {
+    Source source = addSource(r'''
+f() {
+  bool b = false && false;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadOperandLHS_and_nested() {
+    Source source = addSource(r'''
+f() {
+  bool b = false && (false && false);
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadOperandLHS_or() {
+    Source source = addSource(r'''
+f() {
+  bool b = true || true;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_deadOperandLHS_or_nested() {
+    Source source = addSource(r'''
+f() {
+  bool b = true || (false && false);
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_statementAfterBreak_inDefaultCase() {
+    Source source = addSource(r'''
+f(v) {
+  switch(v) {
+    case 1:
+    default:
+      break;
+      var a;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_statementAfterBreak_inForEachStatement() {
+    Source source = addSource(r'''
+f() {
+  var list;
+  for(var l in list) {
+    break;
+    var a;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_statementAfterBreak_inForStatement() {
+    Source source = addSource(r'''
+f() {
+  for(;;) {
+    break;
+    var a;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_statementAfterBreak_inSwitchCase() {
+    Source source = addSource(r'''
+f(v) {
+  switch(v) {
+    case 1:
+      break;
+      var a;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_statementAfterBreak_inWhileStatement() {
+    Source source = addSource(r'''
+f(v) {
+  while(v) {
+    break;
+    var a;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_statementAfterContinue_inForEachStatement() {
+    Source source = addSource(r'''
+f() {
+  var list;
+  for(var l in list) {
+    continue;
+    var a;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_statementAfterContinue_inForStatement() {
+    Source source = addSource(r'''
+f() {
+  for(;;) {
+    continue;
+    var a;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_statementAfterContinue_inWhileStatement() {
+    Source source = addSource(r'''
+f(v) {
+  while(v) {
+    continue;
+    var a;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_statementAfterReturn_function() {
+    Source source = addSource(r'''
+f() {
+  var one = 1;
+  return;
+  var two = 2;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_statementAfterReturn_ifStatement() {
+    Source source = addSource(r'''
+f(bool b) {
+  if(b) {
+    var one = 1;
+    return;
+    var two = 2;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_statementAfterReturn_method() {
+    Source source = addSource(r'''
+class A {
+  m() {
+    var one = 1;
+    return;
+    var two = 2;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_statementAfterReturn_nested() {
+    Source source = addSource(r'''
+f() {
+  var one = 1;
+  return;
+  if(false) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deadCode_statementAfterReturn_twoReturns() {
+    Source source = addSource(r'''
+f() {
+  var one = 1;
+  return;
+  var two = 2;
+  return;
+  var three = 3;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEAD_CODE]);
+    verify([source]);
+  }
+
+  void test_deprecatedAnnotationUse_assignment() {
+    Source source = addSource(r'''
+class A {
+  @deprecated
+  A operator+(A a) { return a; }
+}
+f(A a) {
+  A b;
+  a += b;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEPRECATED_MEMBER_USE]);
+    verify([source]);
+  }
+
+  void test_deprecatedAnnotationUse_Deprecated() {
+    Source source = addSource(r'''
+class A {
+  @Deprecated('0.9')
+  m() {}
+  n() {m();}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEPRECATED_MEMBER_USE]);
+    verify([source]);
+  }
+
+  void test_deprecatedAnnotationUse_deprecated() {
+    Source source = addSource(r'''
+class A {
+  @deprecated
+  m() {}
+  n() {m();}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEPRECATED_MEMBER_USE]);
+    verify([source]);
+  }
+
+  void test_deprecatedAnnotationUse_export() {
+    Source source = addSource("export 'deprecated_library.dart';");
+    addNamedSource(
+        "/deprecated_library.dart",
+        r'''
+@deprecated
+library deprecated_library;
+class A {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEPRECATED_MEMBER_USE]);
+    verify([source]);
+  }
+
+  void test_deprecatedAnnotationUse_getter() {
+    Source source = addSource(r'''
+class A {
+  @deprecated
+  get m => 1;
+}
+f(A a) {
+  return a.m;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEPRECATED_MEMBER_USE]);
+    verify([source]);
+  }
+
+  void test_deprecatedAnnotationUse_import() {
+    Source source = addSource(r'''
+import 'deprecated_library.dart';
+f(A a) {}''');
+    addNamedSource(
+        "/deprecated_library.dart",
+        r'''
+@deprecated
+library deprecated_library;
+class A {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEPRECATED_MEMBER_USE]);
+    verify([source]);
+  }
+
+  void test_deprecatedAnnotationUse_indexExpression() {
+    Source source = addSource(r'''
+class A {
+  @deprecated
+  operator[](int i) {}
+}
+f(A a) {
+  return a[1];
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEPRECATED_MEMBER_USE]);
+    verify([source]);
+  }
+
+  void test_deprecatedAnnotationUse_instanceCreation() {
+    Source source = addSource(r'''
+class A {
+  @deprecated
+  A(int i) {}
+}
+f() {
+  A a = new A(1);
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEPRECATED_MEMBER_USE]);
+    verify([source]);
+  }
+
+  void test_deprecatedAnnotationUse_instanceCreation_namedConstructor() {
+    Source source = addSource(r'''
+class A {
+  @deprecated
+  A.named(int i) {}
+}
+f() {
+  A a = new A.named(1);
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEPRECATED_MEMBER_USE]);
+    verify([source]);
+  }
+
+  void test_deprecatedAnnotationUse_operator() {
+    Source source = addSource(r'''
+class A {
+  @deprecated
+  operator+(A a) {}
+}
+f(A a) {
+  A b;
+  return a + b;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEPRECATED_MEMBER_USE]);
+    verify([source]);
+  }
+
+  void test_deprecatedAnnotationUse_setter() {
+    Source source = addSource(r'''
+class A {
+  @deprecated
+  set s(v) {}
+}
+f(A a) {
+  return a.s = 1;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEPRECATED_MEMBER_USE]);
+    verify([source]);
+  }
+
+  void test_deprecatedAnnotationUse_superConstructor() {
+    Source source = addSource(r'''
+class A {
+  @deprecated
+  A() {}
+}
+class B extends A {
+  B() : super() {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEPRECATED_MEMBER_USE]);
+    verify([source]);
+  }
+
+  void test_deprecatedAnnotationUse_superConstructor_namedConstructor() {
+    Source source = addSource(r'''
+class A {
+  @deprecated
+  A.named() {}
+}
+class B extends A {
+  B() : super.named() {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DEPRECATED_MEMBER_USE]);
+    verify([source]);
+  }
+
+  void test_divisionOptimization_double() {
+    Source source = addSource(r'''
+f(double x, double y) {
+  var v = (x / y).toInt();
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DIVISION_OPTIMIZATION]);
+    verify([source]);
+  }
+
+  void test_divisionOptimization_int() {
+    Source source = addSource(r'''
+f(int x, int y) {
+  var v = (x / y).toInt();
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DIVISION_OPTIMIZATION]);
+    verify([source]);
+  }
+
+  void test_divisionOptimization_propagatedType() {
+    // Tests the propagated type information of the '/' method
+    Source source = addSource(r'''
+f(x, y) {
+  x = 1;
+  y = 1;
+  var v = (x / y).toInt();
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DIVISION_OPTIMIZATION]);
+    verify([source]);
+  }
+
+  void test_divisionOptimization_wrappedBinaryExpression() {
+    Source source = addSource(r'''
+f(int x, int y) {
+  var v = (((x / y))).toInt();
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DIVISION_OPTIMIZATION]);
+    verify([source]);
+  }
+
+  void test_duplicateImport() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart';
+import 'lib1.dart';
+A a;''');
+    addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class A {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DUPLICATE_IMPORT]);
+    verify([source]);
+  }
+
+  void test_duplicateImport2() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart';
+import 'lib1.dart';
+import 'lib1.dart';
+A a;''');
+    addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class A {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(
+        source, [HintCode.DUPLICATE_IMPORT, HintCode.DUPLICATE_IMPORT]);
+    verify([source]);
+  }
+
+  void test_duplicateImport3() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart' as M show A hide B;
+import 'lib1.dart' as M show A hide B;
+M.A a;''');
+    addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class A {}
+class B {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.DUPLICATE_IMPORT]);
+    verify([source]);
+  }
+
+  void test_importDeferredLibraryWithLoadFunction() {
+    resolveWithErrors(<String>[
+      r'''
+library lib1;
+loadLibrary() {}
+f() {}''',
+      r'''
+library root;
+import 'lib1.dart' deferred as lib1;
+main() { lib1.f(); }'''
+    ], <ErrorCode>[
+      HintCode.IMPORT_DEFERRED_LIBRARY_WITH_LOAD_FUNCTION
+    ]);
+  }
+
+  void test_invalidAssignment_instanceVariable() {
+    Source source = addSource(r'''
+class A {
+  int x;
+}
+f(var y) {
+  A a;
+  if(y is String) {
+    a.x = y;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.INVALID_ASSIGNMENT]);
+    verify([source]);
+  }
+
+  void test_invalidAssignment_localVariable() {
+    Source source = addSource(r'''
+f(var y) {
+  if(y is String) {
+    int x = y;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.INVALID_ASSIGNMENT]);
+    verify([source]);
+  }
+
+  void test_invalidAssignment_message() {
+    // The implementation of HintCode.INVALID_ASSIGNMENT assumes that
+    // StaticTypeWarningCode.INVALID_ASSIGNMENT has the same message.
+    expect(StaticTypeWarningCode.INVALID_ASSIGNMENT.message,
+        HintCode.INVALID_ASSIGNMENT.message);
+  }
+
+  void test_invalidAssignment_staticVariable() {
+    Source source = addSource(r'''
+class A {
+  static int x;
+}
+f(var y) {
+  if(y is String) {
+    A.x = y;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.INVALID_ASSIGNMENT]);
+    verify([source]);
+  }
+
+  void test_invalidAssignment_variableDeclaration() {
+    // 17971
+    Source source = addSource(r'''
+class Point {
+  final num x, y;
+  Point(this.x, this.y);
+  Point operator +(Point other) {
+    return new Point(x+other.x, y+other.y);
+  }
+}
+main() {
+  var p1 = new Point(0, 0);
+  var p2 = new Point(10, 10);
+  int n = p1 + p2;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.INVALID_ASSIGNMENT]);
+    verify([source]);
+  }
+
+  void test_isDouble() {
+    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
+    options.dart2jsHint = true;
+    resetWithOptions(options);
+    Source source = addSource("var v = 1 is double;");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.IS_DOUBLE]);
+    verify([source]);
+  }
+
+  void test_isNotDouble() {
+    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
+    options.dart2jsHint = true;
+    resetWithOptions(options);
+    Source source = addSource("var v = 1 is! double;");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.IS_NOT_DOUBLE]);
+    verify([source]);
+  }
+
+  void test_missingReturn_async() {
+    Source source = addSource('''
+import 'dart:async';
+Future<int> f() async {}
+''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.MISSING_RETURN]);
+    verify([source]);
+  }
+
+  void test_missingReturn_function() {
+    Source source = addSource("int f() {}");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.MISSING_RETURN]);
+    verify([source]);
+  }
+
+  void test_missingReturn_method() {
+    Source source = addSource(r'''
+class A {
+  int m() {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.MISSING_RETURN]);
+    verify([source]);
+  }
+
+  void test_overrideOnNonOverridingGetter_invalid() {
+    Source source = addSource(r'''
+library dart.core;
+const override = null;
+class A {
+}
+class B extends A {
+  @override
+  int get m => 1;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.OVERRIDE_ON_NON_OVERRIDING_GETTER]);
+    verify([source]);
+  }
+
+  void test_overrideOnNonOverridingMethod_invalid() {
+    Source source = addSource(r'''
+library dart.core;
+const override = null;
+class A {
+}
+class B extends A {
+  @override
+  int m() => 1;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.OVERRIDE_ON_NON_OVERRIDING_METHOD]);
+    verify([source]);
+  }
+
+  void test_overrideOnNonOverridingSetter_invalid() {
+    Source source = addSource(r'''
+library dart.core;
+const override = null;
+class A {
+}
+class B extends A {
+  @override
+  set m(int x) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.OVERRIDE_ON_NON_OVERRIDING_SETTER]);
+    verify([source]);
+  }
+
+  void test_typeCheck_type_is_Null() {
+    Source source = addSource(r'''
+m(i) {
+  bool b = i is Null;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.TYPE_CHECK_IS_NULL]);
+    verify([source]);
+  }
+
+  void test_typeCheck_type_not_Null() {
+    Source source = addSource(r'''
+m(i) {
+  bool b = i is! Null;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.TYPE_CHECK_IS_NOT_NULL]);
+    verify([source]);
+  }
+
+  void test_undefinedGetter() {
+    Source source = addSource(r'''
+class A {}
+f(var a) {
+  if(a is A) {
+    return a.m;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNDEFINED_GETTER]);
+  }
+
+  void test_undefinedGetter_message() {
+    // The implementation of HintCode.UNDEFINED_SETTER assumes that
+    // UNDEFINED_SETTER in StaticTypeWarningCode and StaticWarningCode are the
+    // same, this verifies that assumption.
+    expect(StaticWarningCode.UNDEFINED_GETTER.message,
+        StaticTypeWarningCode.UNDEFINED_GETTER.message);
+  }
+
+  void test_undefinedMethod() {
+    Source source = addSource(r'''
+f() {
+  var a = 'str';
+  a.notAMethodOnString();
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNDEFINED_METHOD]);
+  }
+
+  void test_undefinedMethod_assignmentExpression() {
+    Source source = addSource(r'''
+class A {}
+class B {
+  f(var a, var a2) {
+    a = new A();
+    a2 = new A();
+    a += a2;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNDEFINED_METHOD]);
+  }
+
+  void test_undefinedOperator_binaryExpression() {
+    Source source = addSource(r'''
+class A {}
+f(var a) {
+  if(a is A) {
+    a + 1;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNDEFINED_OPERATOR]);
+  }
+
+  void test_undefinedOperator_indexBoth() {
+    Source source = addSource(r'''
+class A {}
+f(var a) {
+  if(a is A) {
+    a[0]++;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNDEFINED_OPERATOR]);
+  }
+
+  void test_undefinedOperator_indexGetter() {
+    Source source = addSource(r'''
+class A {}
+f(var a) {
+  if(a is A) {
+    a[0];
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNDEFINED_OPERATOR]);
+  }
+
+  void test_undefinedOperator_indexSetter() {
+    Source source = addSource(r'''
+class A {}
+f(var a) {
+  if(a is A) {
+    a[0] = 1;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNDEFINED_OPERATOR]);
+  }
+
+  void test_undefinedOperator_postfixExpression() {
+    Source source = addSource(r'''
+class A {}
+f(var a) {
+  if(a is A) {
+    a++;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNDEFINED_OPERATOR]);
+  }
+
+  void test_undefinedOperator_prefixExpression() {
+    Source source = addSource(r'''
+class A {}
+f(var a) {
+  if(a is A) {
+    ++a;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNDEFINED_OPERATOR]);
+  }
+
+  void test_undefinedSetter() {
+    Source source = addSource(r'''
+class A {}
+f(var a) {
+  if(a is A) {
+    a.m = 0;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNDEFINED_SETTER]);
+  }
+
+  void test_undefinedSetter_message() {
+    // The implementation of HintCode.UNDEFINED_SETTER assumes that
+    // UNDEFINED_SETTER in StaticTypeWarningCode and StaticWarningCode are the
+    // same, this verifies that assumption.
+    expect(StaticWarningCode.UNDEFINED_SETTER.message,
+        StaticTypeWarningCode.UNDEFINED_SETTER.message);
+  }
+
+  void test_unnecessaryCast_type_supertype() {
+    Source source = addSource(r'''
+m(int i) {
+  var b = i as Object;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNNECESSARY_CAST]);
+    verify([source]);
+  }
+
+  void test_unnecessaryCast_type_type() {
+    Source source = addSource(r'''
+m(num i) {
+  var b = i as num;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNNECESSARY_CAST]);
+    verify([source]);
+  }
+
+  void test_unnecessaryTypeCheck_null_is_Null() {
+    Source source = addSource("bool b = null is Null;");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNNECESSARY_TYPE_CHECK_TRUE]);
+    verify([source]);
+  }
+
+  void test_unnecessaryTypeCheck_null_not_Null() {
+    Source source = addSource("bool b = null is! Null;");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNNECESSARY_TYPE_CHECK_FALSE]);
+    verify([source]);
+  }
+
+  void test_unnecessaryTypeCheck_type_is_dynamic() {
+    Source source = addSource(r'''
+m(i) {
+  bool b = i is dynamic;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNNECESSARY_TYPE_CHECK_TRUE]);
+    verify([source]);
+  }
+
+  void test_unnecessaryTypeCheck_type_is_object() {
+    Source source = addSource(r'''
+m(i) {
+  bool b = i is Object;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNNECESSARY_TYPE_CHECK_TRUE]);
+    verify([source]);
+  }
+
+  void test_unnecessaryTypeCheck_type_not_dynamic() {
+    Source source = addSource(r'''
+m(i) {
+  bool b = i is! dynamic;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNNECESSARY_TYPE_CHECK_FALSE]);
+    verify([source]);
+  }
+
+  void test_unnecessaryTypeCheck_type_not_object() {
+    Source source = addSource(r'''
+m(i) {
+  bool b = i is! Object;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNNECESSARY_TYPE_CHECK_FALSE]);
+    verify([source]);
+  }
+
+  void test_unusedElement_class_isUsed_extends() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class _A {}
+class B extends _A {}
+''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_class_isUsed_implements() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class _A {}
+class B implements _A {}
+''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_class_isUsed_instanceCreation() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class _A {}
+main() {
+  new _A();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_class_isUsed_staticFieldAccess() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class _A {
+  static const F = 42;
+}
+main() {
+  _A.F;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_class_isUsed_staticMethodInvocation() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class _A {
+  static m() {}
+}
+main() {
+  _A.m();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_class_isUsed_typeArgument() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class _A {}
+main() {
+  var v = new List<_A>();
+  print(v);
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_class_notUsed_inClassMember() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class _A {
+  static staticMethod() {
+    new _A();
+  }
+  instanceMethod() {
+    new _A();
+  }
+}
+''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_class_notUsed_inConstructorName() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class _A {
+  _A() {}
+  _A.named() {}
+}
+''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_class_notUsed_isExpression() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class _A {}
+main(p) {
+  if (p is _A) {
+  }
+}
+''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_class_notUsed_noReference() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class _A {}
+main() {
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_class_notUsed_variableDeclaration() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class _A {}
+main() {
+  _A v;
+  print(v);
+}
+print(x) {}
+''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_enum_isUsed_fieldReference() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+enum _MyEnum {A, B, C}
+main() {
+  print(_MyEnum.B);
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_enum_notUsed_noReference() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+enum _MyEnum {A, B, C}
+main() {
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionLocal_isUsed_closure() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+main() {
+  print(() {});
+}
+print(x) {}
+''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionLocal_isUsed_invocation() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+main() {
+  f() {}
+  f();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionLocal_isUsed_reference() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+main() {
+  f() {}
+  print(f);
+}
+print(x) {}
+''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionLocal_notUsed_noReference() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+main() {
+  f() {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionLocal_notUsed_referenceFromItself() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+main() {
+  _f(int p) {
+    _f(p - 1);
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionTop_isUsed_invocation() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+_f() {}
+main() {
+  _f();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionTop_isUsed_reference() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+_f() {}
+main() {
+  print(_f);
+}
+print(x) {}
+''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionTop_notUsed_noReference() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+_f() {}
+main() {
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionTop_notUsed_referenceFromItself() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+_f(int p) {
+  _f(p - 1);
+}
+main() {
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionTypeAlias_isUsed_isExpression() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+typedef _F(a, b);
+main(f) {
+  if (f is _F) {
+    print('F');
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionTypeAlias_isUsed_reference() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+typedef _F(a, b);
+main(_F f) {
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionTypeAlias_isUsed_typeArgument() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+typedef _F(a, b);
+main() {
+  var v = new List<_F>();
+  print(v);
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionTypeAlias_isUsed_variableDeclaration() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+typedef _F(a, b);
+class A {
+  _F f;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_functionTypeAlias_notUsed_noReference() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+typedef _F(a, b);
+main() {
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_getter_isUsed_invocation_implicitThis() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  get _g => null;
+  useGetter() {
+    var v = _g;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_getter_isUsed_invocation_PrefixedIdentifier() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  get _g => null;
+}
+main(A a) {
+  var v = a._g;
+}
+''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_getter_isUsed_invocation_PropertyAccess() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  get _g => null;
+}
+main() {
+  var v = new A()._g;
+}
+''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_getter_notUsed_noReference() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  get _g => null;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_getter_notUsed_referenceFromItself() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  get _g {
+    return _g;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_isUsed_hasReference_implicitThis() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  _m() {}
+  useMethod() {
+    print(_m);
+  }
+}
+print(x) {}
+''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_isUsed_hasReference_implicitThis_subclass() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  _m() {}
+  useMethod() {
+    print(_m);
+  }
+}
+class B extends A {
+  _m() {}
+}
+print(x) {}
+''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_isUsed_hasReference_PrefixedIdentifier() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  _m() {}
+}
+main(A a) {
+  a._m;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_isUsed_hasReference_PropertyAccess() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  _m() {}
+}
+main() {
+  new A()._m;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_isUsed_invocation_implicitThis() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  _m() {}
+  useMethod() {
+    _m();
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_isUsed_invocation_implicitThis_subclass() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  _m() {}
+  useMethod() {
+    _m();
+  }
+}
+class B extends A {
+  _m() {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_isUsed_invocation_MemberElement() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A<T> {
+  _m(T t) {}
+}
+main(A<int> a) {
+  a._m(0);
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_isUsed_invocation_propagated() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  _m() {}
+}
+main() {
+  var a = new A();
+  a._m();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_isUsed_invocation_static() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  _m() {}
+}
+main() {
+  A a = new A();
+  a._m();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_isUsed_invocation_subclass() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  _m() {}
+}
+class B extends A {
+  _m() {}
+}
+main(A a) {
+  a._m();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_isUsed_notPrivate() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  m() {}
+}
+main() {
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_isUsed_staticInvocation() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  static _m() {}
+}
+main() {
+  A._m();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_notUsed_noReference() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  static _m() {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_method_notUsed_referenceFromItself() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  static _m(int p) {
+    _m(p - 1);
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_setter_isUsed_invocation_implicitThis() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  set _s(x) {}
+  useSetter() {
+    _s = 42;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_setter_isUsed_invocation_PrefixedIdentifier() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  set _s(x) {}
+}
+main(A a) {
+  a._s = 42;
+}
+''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_setter_isUsed_invocation_PropertyAccess() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  set _s(x) {}
+}
+main() {
+  new A()._s = 42;
+}
+''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedElement_setter_notUsed_noReference() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  set _s(x) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedElement_setter_notUsed_referenceFromItself() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  set _s(int x) {
+    if (x > 5) {
+      _s = x - 1;
+    }
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_ELEMENT]);
+    verify([source]);
+  }
+
+  void test_unusedField_isUsed_argument() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  int _f = 0;
+  main() {
+    print(++_f);
+  }
+}
+print(x) {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedField_isUsed_reference_implicitThis() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  int _f;
+  main() {
+    print(_f);
+  }
+}
+print(x) {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedField_isUsed_reference_implicitThis_expressionFunctionBody() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  int _f;
+  m() => _f;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedField_isUsed_reference_implicitThis_subclass() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  int _f;
+  main() {
+    print(_f);
+  }
+}
+class B extends A {
+  int _f;
+}
+print(x) {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedField_isUsed_reference_qualified_propagatedElement() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  int _f;
+}
+main() {
+  var a = new A();
+  print(a._f);
+}
+print(x) {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedField_isUsed_reference_qualified_staticElement() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  int _f;
+}
+main() {
+  A a = new A();
+  print(a._f);
+}
+print(x) {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedField_isUsed_reference_qualified_unresolved() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  int _f;
+}
+main(a) {
+  print(a._f);
+}
+print(x) {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedField_notUsed_compoundAssign() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  int _f;
+  main() {
+    _f += 2;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_FIELD]);
+    verify([source]);
+  }
+
+  void test_unusedField_notUsed_noReference() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  int _f;
+}
+''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_FIELD]);
+    verify([source]);
+  }
+
+  void test_unusedField_notUsed_postfixExpr() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  int _f = 0;
+  main() {
+    _f++;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_FIELD]);
+    verify([source]);
+  }
+
+  void test_unusedField_notUsed_prefixExpr() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  int _f = 0;
+  main() {
+    ++_f;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_FIELD]);
+    verify([source]);
+  }
+
+  void test_unusedField_notUsed_simpleAssignment() {
+    enableUnusedElement = true;
+    Source source = addSource(r'''
+class A {
+  int _f;
+  m() {
+    _f = 1;
+  }
+}
+main(A a) {
+  a._f = 2;
+}
+''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_FIELD]);
+    verify([source]);
+  }
+
+  void test_unusedImport() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart';''');
+    Source source2 = addNamedSource("/lib1.dart", "library lib1;");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_IMPORT]);
+    assertNoErrors(source2);
+    verify([source, source2]);
+  }
+
+  void test_unusedImport_as() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart';
+import 'lib1.dart' as one;
+one.A a;''');
+    Source source2 = addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class A {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_IMPORT]);
+    assertNoErrors(source2);
+    verify([source, source2]);
+  }
+
+  void test_unusedImport_hide() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart';
+import 'lib1.dart' hide A;
+A a;''');
+    Source source2 = addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class A {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_IMPORT]);
+    assertNoErrors(source2);
+    verify([source, source2]);
+  }
+
+  void test_unusedImport_show() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart' show A;
+import 'lib1.dart' show B;
+A a;''');
+    Source source2 = addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class A {}
+class B {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_IMPORT]);
+    assertNoErrors(source2);
+    verify([source, source2]);
+  }
+
+  void test_unusedLocalVariable_inCatch_exception() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+main() {
+  try {
+  } on String catch (exception) {
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_CATCH_CLAUSE]);
+    verify([source]);
+  }
+
+  void test_unusedLocalVariable_inCatch_exception_hasStack() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+main() {
+  try {
+  } catch (exception, stack) {
+    print(stack);
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedLocalVariable_inCatch_exception_noOnClause() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+main() {
+  try {
+  } catch (exception) {
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedLocalVariable_inCatch_stackTrace() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+main() {
+  try {
+  } catch (exception, stackTrace) {
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_CATCH_STACK]);
+    verify([source]);
+  }
+
+  void test_unusedLocalVariable_inCatch_stackTrace_used() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+main() {
+  try {
+  } catch (exception, stackTrace) {
+    print('exception at $stackTrace');
+  }
+}
+print(x) {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedLocalVariable_inFor_underscore_ignored() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+main() {
+  for (var _ in [1,2,3]) {
+    for (var __ in [4,5,6]) {
+      // do something
+    }
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedLocalVariable_inFunction() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+main() {
+  var v = 1;
+  v = 2;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_LOCAL_VARIABLE]);
+    verify([source]);
+  }
+
+  void test_unusedLocalVariable_inMethod() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+class A {
+  foo() {
+    var v = 1;
+    v = 2;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_LOCAL_VARIABLE]);
+    verify([source]);
+  }
+
+  void test_unusedLocalVariable_isInvoked() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+typedef Foo();
+main() {
+  Foo foo;
+  foo();
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedLocalVariable_isRead_notUsed_compoundAssign() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+main() {
+  var v = 1;
+  v += 2;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_LOCAL_VARIABLE]);
+    verify([source]);
+  }
+
+  void test_unusedLocalVariable_isRead_notUsed_postfixExpr() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+main() {
+  var v = 1;
+  v++;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_LOCAL_VARIABLE]);
+    verify([source]);
+  }
+
+  void test_unusedLocalVariable_isRead_notUsed_prefixExpr() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+main() {
+  var v = 1;
+  ++v;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.UNUSED_LOCAL_VARIABLE]);
+    verify([source]);
+  }
+
+  void test_unusedLocalVariable_isRead_usedArgument() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+main() {
+  var v = 1;
+  print(++v);
+}
+print(x) {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedLocalVariable_isRead_usedInvocationTarget() {
+    enableUnusedLocalVariable = true;
+    Source source = addSource(r'''
+class A {
+  foo() {}
+}
+main() {
+  var a = new A();
+  a.foo();
+}
+''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    verify([source]);
+  }
+
+  void test_useOfVoidResult_assignmentExpression_function() {
+    Source source = addSource(r'''
+void f() {}
+class A {
+  n() {
+    var a;
+    a = f();
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.USE_OF_VOID_RESULT]);
+    verify([source]);
+  }
+
+  void test_useOfVoidResult_assignmentExpression_method() {
+    Source source = addSource(r'''
+class A {
+  void m() {}
+  n() {
+    var a;
+    a = m();
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.USE_OF_VOID_RESULT]);
+    verify([source]);
+  }
+
+  void test_useOfVoidResult_inForLoop() {
+    Source source = addSource(r'''
+class A {
+  void m() {}
+  n() {
+    for(var a = m();;) {}
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.USE_OF_VOID_RESULT]);
+    verify([source]);
+  }
+
+  void test_useOfVoidResult_variableDeclaration_function() {
+    Source source = addSource(r'''
+void f() {}
+class A {
+  n() {
+    var a = f();
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.USE_OF_VOID_RESULT]);
+    verify([source]);
+  }
+
+  void test_useOfVoidResult_variableDeclaration_method() {
+    Source source = addSource(r'''
+class A {
+  void m() {}
+  n() {
+    var a = m();
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [HintCode.USE_OF_VOID_RESULT]);
+    verify([source]);
+  }
+
+  void test_useOfVoidResult_variableDeclaration_method2() {
+    Source source = addSource(r'''
+class A {
+  void m() {}
+  n() {
+    var a = m(), b = m();
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(
+        source, [HintCode.USE_OF_VOID_RESULT, HintCode.USE_OF_VOID_RESULT]);
+    verify([source]);
+  }
+}
+
+@reflectiveTest
+class InheritanceManagerTest extends EngineTestCase {
+  /**
+   * The type provider used to access the types.
+   */
+  TestTypeProvider _typeProvider;
+
+  /**
+   * The library containing the code being resolved.
+   */
+  LibraryElementImpl _definingLibrary;
+
+  /**
+   * The inheritance manager being tested.
+   */
+  InheritanceManager _inheritanceManager;
+
+  /**
+   * The number of members that Object implements (as determined by [TestTypeProvider]).
+   */
+  int _numOfMembersInObject = 0;
+
+  @override
+  void setUp() {
+    _typeProvider = new TestTypeProvider();
+    _inheritanceManager = _createInheritanceManager();
+    InterfaceType objectType = _typeProvider.objectType;
+    _numOfMembersInObject =
+        objectType.methods.length + objectType.accessors.length;
+  }
+
+  void test_getMapOfMembersInheritedFromClasses_accessor_extends() {
+    // class A { int get g; }
+    // class B extends A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "g";
+    PropertyAccessorElement getterG =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getterG];
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    MemberMap mapB =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classB);
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapB.size, _numOfMembersInObject + 1);
+    expect(mapB.get(getterName), same(getterG));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_getMapOfMembersInheritedFromClasses_accessor_implements() {
+    // class A { int get g; }
+    // class B implements A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "g";
+    PropertyAccessorElement getterG =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getterG];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.interfaces = <InterfaceType>[classA.type];
+    MemberMap mapB =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classB);
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapB.size, _numOfMembersInObject);
+    expect(mapB.get(getterName), isNull);
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_getMapOfMembersInheritedFromClasses_accessor_with() {
+    // class A { int get g; }
+    // class B extends Object with A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "g";
+    PropertyAccessorElement getterG =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getterG];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.mixins = <InterfaceType>[classA.type];
+    MemberMap mapB =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classB);
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapB.size, _numOfMembersInObject + 1);
+    expect(mapB.get(getterName), same(getterG));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_getMapOfMembersInheritedFromClasses_implicitExtends() {
+    // class A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    _assertNoErrors(classA);
+  }
+
+  void test_getMapOfMembersInheritedFromClasses_method_extends() {
+    // class A { int g(); }
+    // class B extends A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodM];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.supertype = classA.type;
+    MemberMap mapB =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classB);
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapB.size, _numOfMembersInObject + 1);
+    expect(mapB.get(methodName), same(methodM));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_getMapOfMembersInheritedFromClasses_method_implements() {
+    // class A { int g(); }
+    // class B implements A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodM];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.interfaces = <InterfaceType>[classA.type];
+    MemberMap mapB =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classB);
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapB.size, _numOfMembersInObject);
+    expect(mapB.get(methodName), isNull);
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_getMapOfMembersInheritedFromClasses_method_with() {
+    // class A { int g(); }
+    // class B extends Object with A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodM];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.mixins = <InterfaceType>[classA.type];
+    MemberMap mapB =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classB);
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapB.size, _numOfMembersInObject + 1);
+    expect(mapB.get(methodName), same(methodM));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_getMapOfMembersInheritedFromClasses_method_with_two_mixins() {
+    // class A1 { int m(); }
+    // class A2 { int m(); }
+    // class B extends Object with A1, A2 {}
+    ClassElementImpl classA1 = ElementFactory.classElement2("A1");
+    String methodName = "m";
+    MethodElement methodA1M =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA1.methods = <MethodElement>[methodA1M];
+    ClassElementImpl classA2 = ElementFactory.classElement2("A2");
+    MethodElement methodA2M =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA2.methods = <MethodElement>[methodA2M];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.mixins = <InterfaceType>[classA1.type, classA2.type];
+    MemberMap mapB =
+        _inheritanceManager.getMapOfMembersInheritedFromClasses(classB);
+    expect(mapB.get(methodName), same(methodA2M));
+    _assertNoErrors(classA1);
+    _assertNoErrors(classA2);
+    _assertNoErrors(classB);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_accessor_extends() {
+    // class A { int get g; }
+    // class B extends A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "g";
+    PropertyAccessorElement getterG =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getterG];
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    MemberMap mapB =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classB);
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapB.size, _numOfMembersInObject + 1);
+    expect(mapB.get(getterName), same(getterG));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_accessor_implements() {
+    // class A { int get g; }
+    // class B implements A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "g";
+    PropertyAccessorElement getterG =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getterG];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.interfaces = <InterfaceType>[classA.type];
+    MemberMap mapB =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classB);
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapB.size, _numOfMembersInObject + 1);
+    expect(mapB.get(getterName), same(getterG));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_accessor_with() {
+    // class A { int get g; }
+    // class B extends Object with A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "g";
+    PropertyAccessorElement getterG =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getterG];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.mixins = <InterfaceType>[classA.type];
+    MemberMap mapB =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classB);
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapB.size, _numOfMembersInObject + 1);
+    expect(mapB.get(getterName), same(getterG));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_implicitExtends() {
+    // class A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    _assertNoErrors(classA);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_inconsistentMethodInheritance_getter_method() {
+    // class I1 { int m(); }
+    // class I2 { int get m; }
+    // class A implements I2, I1 {}
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classI1.methods = <MethodElement>[methodM];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    PropertyAccessorElement getter =
+        ElementFactory.getterElement(methodName, false, _typeProvider.intType);
+    classI2.accessors = <PropertyAccessorElement>[getter];
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[classI2.type, classI1.type];
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapA.get(methodName), isNull);
+    _assertErrors(classA,
+        [StaticWarningCode.INCONSISTENT_METHOD_INHERITANCE_GETTER_AND_METHOD]);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_inconsistentMethodInheritance_int_str() {
+    // class I1 { int m(); }
+    // class I2 { String m(); }
+    // class A implements I1, I2 {}
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String methodName = "m";
+    MethodElement methodM1 =
+        ElementFactory.methodElement(methodName, null, [_typeProvider.intType]);
+    classI1.methods = <MethodElement>[methodM1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    MethodElement methodM2 = ElementFactory.methodElement(
+        methodName, null, [_typeProvider.stringType]);
+    classI2.methods = <MethodElement>[methodM2];
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[classI1.type, classI2.type];
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapA.get(methodName), isNull);
+    _assertErrors(
+        classA, [StaticTypeWarningCode.INCONSISTENT_METHOD_INHERITANCE]);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_inconsistentMethodInheritance_method_getter() {
+    // class I1 { int m(); }
+    // class I2 { int get m; }
+    // class A implements I1, I2 {}
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classI1.methods = <MethodElement>[methodM];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    PropertyAccessorElement getter =
+        ElementFactory.getterElement(methodName, false, _typeProvider.intType);
+    classI2.accessors = <PropertyAccessorElement>[getter];
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[classI1.type, classI2.type];
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapA.get(methodName), isNull);
+    _assertErrors(classA,
+        [StaticWarningCode.INCONSISTENT_METHOD_INHERITANCE_GETTER_AND_METHOD]);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_inconsistentMethodInheritance_numOfRequiredParams() {
+    // class I1 { dynamic m(int, [int]); }
+    // class I2 { dynamic m(int, int, int); }
+    // class A implements I1, I2 {}
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String methodName = "m";
+    MethodElementImpl methodM1 =
+        ElementFactory.methodElement(methodName, _typeProvider.dynamicType);
+    ParameterElementImpl parameter1 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a1"));
+    parameter1.type = _typeProvider.intType;
+    parameter1.parameterKind = ParameterKind.REQUIRED;
+    ParameterElementImpl parameter2 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a2"));
+    parameter2.type = _typeProvider.intType;
+    parameter2.parameterKind = ParameterKind.POSITIONAL;
+    methodM1.parameters = <ParameterElement>[parameter1, parameter2];
+    classI1.methods = <MethodElement>[methodM1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    MethodElementImpl methodM2 =
+        ElementFactory.methodElement(methodName, _typeProvider.dynamicType);
+    ParameterElementImpl parameter3 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a3"));
+    parameter3.type = _typeProvider.intType;
+    parameter3.parameterKind = ParameterKind.REQUIRED;
+    ParameterElementImpl parameter4 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a4"));
+    parameter4.type = _typeProvider.intType;
+    parameter4.parameterKind = ParameterKind.REQUIRED;
+    ParameterElementImpl parameter5 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a5"));
+    parameter5.type = _typeProvider.intType;
+    parameter5.parameterKind = ParameterKind.REQUIRED;
+    methodM2.parameters = <ParameterElement>[
+      parameter3,
+      parameter4,
+      parameter5
+    ];
+    classI2.methods = <MethodElement>[methodM2];
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[classI1.type, classI2.type];
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapA.get(methodName), isNull);
+    _assertErrors(
+        classA, [StaticTypeWarningCode.INCONSISTENT_METHOD_INHERITANCE]);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_inconsistentMethodInheritance_str_int() {
+    // class I1 { int m(); }
+    // class I2 { String m(); }
+    // class A implements I2, I1 {}
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String methodName = "m";
+    MethodElement methodM1 = ElementFactory.methodElement(
+        methodName, null, [_typeProvider.stringType]);
+    classI1.methods = <MethodElement>[methodM1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    MethodElement methodM2 =
+        ElementFactory.methodElement(methodName, null, [_typeProvider.intType]);
+    classI2.methods = <MethodElement>[methodM2];
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[classI2.type, classI1.type];
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapA.get(methodName), isNull);
+    _assertErrors(
+        classA, [StaticTypeWarningCode.INCONSISTENT_METHOD_INHERITANCE]);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_method_extends() {
+    // class A { int g(); }
+    // class B extends A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodM];
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    MemberMap mapB =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classB);
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapB.size, _numOfMembersInObject + 1);
+    expect(mapB.get(methodName), same(methodM));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_method_implements() {
+    // class A { int g(); }
+    // class B implements A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodM];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.interfaces = <InterfaceType>[classA.type];
+    MemberMap mapB =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classB);
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapB.size, _numOfMembersInObject + 1);
+    expect(mapB.get(methodName), same(methodM));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_method_with() {
+    // class A { int g(); }
+    // class B extends Object with A {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodM];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.mixins = <InterfaceType>[classA.type];
+    MemberMap mapB =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classB);
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject);
+    expect(mapB.size, _numOfMembersInObject + 1);
+    expect(mapB.get(methodName), same(methodM));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_union_differentNames() {
+    // class I1 { int m1(); }
+    // class I2 { int m2(); }
+    // class A implements I1, I2 {}
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String methodName1 = "m1";
+    MethodElement methodM1 =
+        ElementFactory.methodElement(methodName1, _typeProvider.intType);
+    classI1.methods = <MethodElement>[methodM1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    String methodName2 = "m2";
+    MethodElement methodM2 =
+        ElementFactory.methodElement(methodName2, _typeProvider.intType);
+    classI2.methods = <MethodElement>[methodM2];
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[classI1.type, classI2.type];
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject + 2);
+    expect(mapA.get(methodName1), same(methodM1));
+    expect(mapA.get(methodName2), same(methodM2));
+    _assertNoErrors(classA);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_union_multipleSubtypes_2_getters() {
+    // class I1 { int get g; }
+    // class I2 { num get g; }
+    // class A implements I1, I2 {}
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String accessorName = "g";
+    PropertyAccessorElement getter1 = ElementFactory.getterElement(
+        accessorName, false, _typeProvider.intType);
+    classI1.accessors = <PropertyAccessorElement>[getter1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    PropertyAccessorElement getter2 = ElementFactory.getterElement(
+        accessorName, false, _typeProvider.numType);
+    classI2.accessors = <PropertyAccessorElement>[getter2];
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[classI1.type, classI2.type];
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject + 1);
+    PropertyAccessorElement syntheticAccessor = ElementFactory.getterElement(
+        accessorName, false, _typeProvider.dynamicType);
+    expect(mapA.get(accessorName).type, syntheticAccessor.type);
+    _assertNoErrors(classA);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_union_multipleSubtypes_2_methods() {
+    // class I1 { dynamic m(int); }
+    // class I2 { dynamic m(num); }
+    // class A implements I1, I2 {}
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String methodName = "m";
+    MethodElementImpl methodM1 =
+        ElementFactory.methodElement(methodName, _typeProvider.dynamicType);
+    ParameterElementImpl parameter1 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a0"));
+    parameter1.type = _typeProvider.intType;
+    parameter1.parameterKind = ParameterKind.REQUIRED;
+    methodM1.parameters = <ParameterElement>[parameter1];
+    classI1.methods = <MethodElement>[methodM1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    MethodElementImpl methodM2 =
+        ElementFactory.methodElement(methodName, _typeProvider.dynamicType);
+    ParameterElementImpl parameter2 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a0"));
+    parameter2.type = _typeProvider.numType;
+    parameter2.parameterKind = ParameterKind.REQUIRED;
+    methodM2.parameters = <ParameterElement>[parameter2];
+    classI2.methods = <MethodElement>[methodM2];
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[classI1.type, classI2.type];
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject + 1);
+    MethodElement syntheticMethod = ElementFactory.methodElement(
+        methodName, _typeProvider.dynamicType, [_typeProvider.dynamicType]);
+    expect(mapA.get(methodName).type, syntheticMethod.type);
+    _assertNoErrors(classA);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_union_multipleSubtypes_2_setters() {
+    // class I1 { set s(int); }
+    // class I2 { set s(num); }
+    // class A implements I1, I2 {}
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String accessorName = "s";
+    PropertyAccessorElement setter1 = ElementFactory.setterElement(
+        accessorName, false, _typeProvider.intType);
+    classI1.accessors = <PropertyAccessorElement>[setter1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    PropertyAccessorElement setter2 = ElementFactory.setterElement(
+        accessorName, false, _typeProvider.numType);
+    classI2.accessors = <PropertyAccessorElement>[setter2];
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[classI1.type, classI2.type];
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject + 1);
+    PropertyAccessorElementImpl syntheticAccessor = ElementFactory
+        .setterElement(accessorName, false, _typeProvider.dynamicType);
+    syntheticAccessor.returnType = _typeProvider.dynamicType;
+    expect(mapA.get("$accessorName=").type, syntheticAccessor.type);
+    _assertNoErrors(classA);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_union_multipleSubtypes_3_getters() {
+    // class A {}
+    // class B extends A {}
+    // class C extends B {}
+    // class I1 { A get g; }
+    // class I2 { B get g; }
+    // class I3 { C get g; }
+    // class D implements I1, I2, I3 {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    ClassElementImpl classC = ElementFactory.classElement("C", classB.type);
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String accessorName = "g";
+    PropertyAccessorElement getter1 =
+        ElementFactory.getterElement(accessorName, false, classA.type);
+    classI1.accessors = <PropertyAccessorElement>[getter1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    PropertyAccessorElement getter2 =
+        ElementFactory.getterElement(accessorName, false, classB.type);
+    classI2.accessors = <PropertyAccessorElement>[getter2];
+    ClassElementImpl classI3 = ElementFactory.classElement2("I3");
+    PropertyAccessorElement getter3 =
+        ElementFactory.getterElement(accessorName, false, classC.type);
+    classI3.accessors = <PropertyAccessorElement>[getter3];
+    ClassElementImpl classD = ElementFactory.classElement2("D");
+    classD.interfaces = <InterfaceType>[
+      classI1.type,
+      classI2.type,
+      classI3.type
+    ];
+    MemberMap mapD =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classD);
+    expect(mapD.size, _numOfMembersInObject + 1);
+    PropertyAccessorElement syntheticAccessor = ElementFactory.getterElement(
+        accessorName, false, _typeProvider.dynamicType);
+    expect(mapD.get(accessorName).type, syntheticAccessor.type);
+    _assertNoErrors(classD);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_union_multipleSubtypes_3_methods() {
+    // class A {}
+    // class B extends A {}
+    // class C extends B {}
+    // class I1 { dynamic m(A a); }
+    // class I2 { dynamic m(B b); }
+    // class I3 { dynamic m(C c); }
+    // class D implements I1, I2, I3 {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    ClassElementImpl classC = ElementFactory.classElement("C", classB.type);
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String methodName = "m";
+    MethodElementImpl methodM1 =
+        ElementFactory.methodElement(methodName, _typeProvider.dynamicType);
+    ParameterElementImpl parameter1 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a0"));
+    parameter1.type = classA.type;
+    parameter1.parameterKind = ParameterKind.REQUIRED;
+    methodM1.parameters = <ParameterElement>[parameter1];
+    classI1.methods = <MethodElement>[methodM1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    MethodElementImpl methodM2 =
+        ElementFactory.methodElement(methodName, _typeProvider.dynamicType);
+    ParameterElementImpl parameter2 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a0"));
+    parameter2.type = classB.type;
+    parameter2.parameterKind = ParameterKind.REQUIRED;
+    methodM2.parameters = <ParameterElement>[parameter2];
+    classI2.methods = <MethodElement>[methodM2];
+    ClassElementImpl classI3 = ElementFactory.classElement2("I3");
+    MethodElementImpl methodM3 =
+        ElementFactory.methodElement(methodName, _typeProvider.dynamicType);
+    ParameterElementImpl parameter3 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a0"));
+    parameter3.type = classC.type;
+    parameter3.parameterKind = ParameterKind.REQUIRED;
+    methodM3.parameters = <ParameterElement>[parameter3];
+    classI3.methods = <MethodElement>[methodM3];
+    ClassElementImpl classD = ElementFactory.classElement2("D");
+    classD.interfaces = <InterfaceType>[
+      classI1.type,
+      classI2.type,
+      classI3.type
+    ];
+    MemberMap mapD =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classD);
+    expect(mapD.size, _numOfMembersInObject + 1);
+    MethodElement syntheticMethod = ElementFactory.methodElement(
+        methodName, _typeProvider.dynamicType, [_typeProvider.dynamicType]);
+    expect(mapD.get(methodName).type, syntheticMethod.type);
+    _assertNoErrors(classD);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_union_multipleSubtypes_3_setters() {
+    // class A {}
+    // class B extends A {}
+    // class C extends B {}
+    // class I1 { set s(A); }
+    // class I2 { set s(B); }
+    // class I3 { set s(C); }
+    // class D implements I1, I2, I3 {}
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    ClassElementImpl classC = ElementFactory.classElement("C", classB.type);
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String accessorName = "s";
+    PropertyAccessorElement setter1 =
+        ElementFactory.setterElement(accessorName, false, classA.type);
+    classI1.accessors = <PropertyAccessorElement>[setter1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    PropertyAccessorElement setter2 =
+        ElementFactory.setterElement(accessorName, false, classB.type);
+    classI2.accessors = <PropertyAccessorElement>[setter2];
+    ClassElementImpl classI3 = ElementFactory.classElement2("I3");
+    PropertyAccessorElement setter3 =
+        ElementFactory.setterElement(accessorName, false, classC.type);
+    classI3.accessors = <PropertyAccessorElement>[setter3];
+    ClassElementImpl classD = ElementFactory.classElement2("D");
+    classD.interfaces = <InterfaceType>[
+      classI1.type,
+      classI2.type,
+      classI3.type
+    ];
+    MemberMap mapD =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classD);
+    expect(mapD.size, _numOfMembersInObject + 1);
+    PropertyAccessorElementImpl syntheticAccessor = ElementFactory
+        .setterElement(accessorName, false, _typeProvider.dynamicType);
+    syntheticAccessor.returnType = _typeProvider.dynamicType;
+    expect(mapD.get("$accessorName=").type, syntheticAccessor.type);
+    _assertNoErrors(classD);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_union_oneSubtype_2_methods() {
+    // class I1 { int m(); }
+    // class I2 { int m([int]); }
+    // class A implements I1, I2 {}
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String methodName = "m";
+    MethodElement methodM1 =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classI1.methods = <MethodElement>[methodM1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    MethodElementImpl methodM2 =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    ParameterElementImpl parameter1 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a1"));
+    parameter1.type = _typeProvider.intType;
+    parameter1.parameterKind = ParameterKind.POSITIONAL;
+    methodM2.parameters = <ParameterElement>[parameter1];
+    classI2.methods = <MethodElement>[methodM2];
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[classI1.type, classI2.type];
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject + 1);
+    expect(mapA.get(methodName), same(methodM2));
+    _assertNoErrors(classA);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_union_oneSubtype_3_methods() {
+    // class I1 { int m(); }
+    // class I2 { int m([int]); }
+    // class I3 { int m([int, int]); }
+    // class A implements I1, I2, I3 {}
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String methodName = "m";
+    MethodElementImpl methodM1 =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classI1.methods = <MethodElement>[methodM1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    MethodElementImpl methodM2 =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    ParameterElementImpl parameter1 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a1"));
+    parameter1.type = _typeProvider.intType;
+    parameter1.parameterKind = ParameterKind.POSITIONAL;
+    methodM1.parameters = <ParameterElement>[parameter1];
+    classI2.methods = <MethodElement>[methodM2];
+    ClassElementImpl classI3 = ElementFactory.classElement2("I3");
+    MethodElementImpl methodM3 =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    ParameterElementImpl parameter2 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a2"));
+    parameter2.type = _typeProvider.intType;
+    parameter2.parameterKind = ParameterKind.POSITIONAL;
+    ParameterElementImpl parameter3 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a3"));
+    parameter3.type = _typeProvider.intType;
+    parameter3.parameterKind = ParameterKind.POSITIONAL;
+    methodM3.parameters = <ParameterElement>[parameter2, parameter3];
+    classI3.methods = <MethodElement>[methodM3];
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[
+      classI1.type,
+      classI2.type,
+      classI3.type
+    ];
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject + 1);
+    expect(mapA.get(methodName), same(methodM3));
+    _assertNoErrors(classA);
+  }
+
+  void test_getMapOfMembersInheritedFromInterfaces_union_oneSubtype_4_methods() {
+    // class I1 { int m(); }
+    // class I2 { int m(); }
+    // class I3 { int m([int]); }
+    // class I4 { int m([int, int]); }
+    // class A implements I1, I2, I3, I4 {}
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String methodName = "m";
+    MethodElement methodM1 =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classI1.methods = <MethodElement>[methodM1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    MethodElement methodM2 =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classI2.methods = <MethodElement>[methodM2];
+    ClassElementImpl classI3 = ElementFactory.classElement2("I3");
+    MethodElementImpl methodM3 =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    ParameterElementImpl parameter1 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a1"));
+    parameter1.type = _typeProvider.intType;
+    parameter1.parameterKind = ParameterKind.POSITIONAL;
+    methodM3.parameters = <ParameterElement>[parameter1];
+    classI3.methods = <MethodElement>[methodM3];
+    ClassElementImpl classI4 = ElementFactory.classElement2("I4");
+    MethodElementImpl methodM4 =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    ParameterElementImpl parameter2 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a2"));
+    parameter2.type = _typeProvider.intType;
+    parameter2.parameterKind = ParameterKind.POSITIONAL;
+    ParameterElementImpl parameter3 =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("a3"));
+    parameter3.type = _typeProvider.intType;
+    parameter3.parameterKind = ParameterKind.POSITIONAL;
+    methodM4.parameters = <ParameterElement>[parameter2, parameter3];
+    classI4.methods = <MethodElement>[methodM4];
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[
+      classI1.type,
+      classI2.type,
+      classI3.type,
+      classI4.type
+    ];
+    MemberMap mapA =
+        _inheritanceManager.getMapOfMembersInheritedFromInterfaces(classA);
+    expect(mapA.size, _numOfMembersInObject + 1);
+    expect(mapA.get(methodName), same(methodM4));
+    _assertNoErrors(classA);
+  }
+
+  void test_lookupInheritance_interface_getter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "g";
+    PropertyAccessorElement getterG =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getterG];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.interfaces = <InterfaceType>[classA.type];
+    expect(_inheritanceManager.lookupInheritance(classB, getterName),
+        same(getterG));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupInheritance_interface_method() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodM];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.interfaces = <InterfaceType>[classA.type];
+    expect(_inheritanceManager.lookupInheritance(classB, methodName),
+        same(methodM));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupInheritance_interface_setter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String setterName = "s";
+    PropertyAccessorElement setterS =
+        ElementFactory.setterElement(setterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[setterS];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.interfaces = <InterfaceType>[classA.type];
+    expect(_inheritanceManager.lookupInheritance(classB, "$setterName="),
+        same(setterS));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupInheritance_interface_staticMember() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    (methodM as MethodElementImpl).static = true;
+    classA.methods = <MethodElement>[methodM];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.interfaces = <InterfaceType>[classA.type];
+    expect(_inheritanceManager.lookupInheritance(classB, methodName), isNull);
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupInheritance_interfaces_infiniteLoop() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[classA.type];
+    expect(_inheritanceManager.lookupInheritance(classA, "name"), isNull);
+    _assertNoErrors(classA);
+  }
+
+  void test_lookupInheritance_interfaces_infiniteLoop2() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classA.interfaces = <InterfaceType>[classB.type];
+    classB.interfaces = <InterfaceType>[classA.type];
+    expect(_inheritanceManager.lookupInheritance(classA, "name"), isNull);
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupInheritance_interfaces_union2() {
+    ClassElementImpl classI1 = ElementFactory.classElement2("I1");
+    String methodName1 = "m1";
+    MethodElement methodM1 =
+        ElementFactory.methodElement(methodName1, _typeProvider.intType);
+    classI1.methods = <MethodElement>[methodM1];
+    ClassElementImpl classI2 = ElementFactory.classElement2("I2");
+    String methodName2 = "m2";
+    MethodElement methodM2 =
+        ElementFactory.methodElement(methodName2, _typeProvider.intType);
+    classI2.methods = <MethodElement>[methodM2];
+    classI2.interfaces = <InterfaceType>[classI1.type];
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.interfaces = <InterfaceType>[classI2.type];
+    expect(_inheritanceManager.lookupInheritance(classA, methodName1),
+        same(methodM1));
+    expect(_inheritanceManager.lookupInheritance(classA, methodName2),
+        same(methodM2));
+    _assertNoErrors(classI1);
+    _assertNoErrors(classI2);
+    _assertNoErrors(classA);
+  }
+
+  void test_lookupInheritance_mixin_getter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "g";
+    PropertyAccessorElement getterG =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getterG];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.mixins = <InterfaceType>[classA.type];
+    expect(_inheritanceManager.lookupInheritance(classB, getterName),
+        same(getterG));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupInheritance_mixin_method() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodM];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.mixins = <InterfaceType>[classA.type];
+    expect(_inheritanceManager.lookupInheritance(classB, methodName),
+        same(methodM));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupInheritance_mixin_setter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String setterName = "s";
+    PropertyAccessorElement setterS =
+        ElementFactory.setterElement(setterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[setterS];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.mixins = <InterfaceType>[classA.type];
+    expect(_inheritanceManager.lookupInheritance(classB, "$setterName="),
+        same(setterS));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupInheritance_mixin_staticMember() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    (methodM as MethodElementImpl).static = true;
+    classA.methods = <MethodElement>[methodM];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.mixins = <InterfaceType>[classA.type];
+    expect(_inheritanceManager.lookupInheritance(classB, methodName), isNull);
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupInheritance_noMember() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    expect(_inheritanceManager.lookupInheritance(classA, "a"), isNull);
+    _assertNoErrors(classA);
+  }
+
+  void test_lookupInheritance_superclass_getter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "g";
+    PropertyAccessorElement getterG =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getterG];
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    expect(_inheritanceManager.lookupInheritance(classB, getterName),
+        same(getterG));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupInheritance_superclass_infiniteLoop() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    classA.supertype = classA.type;
+    expect(_inheritanceManager.lookupInheritance(classA, "name"), isNull);
+    _assertNoErrors(classA);
+  }
+
+  void test_lookupInheritance_superclass_infiniteLoop2() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classA.supertype = classB.type;
+    classB.supertype = classA.type;
+    expect(_inheritanceManager.lookupInheritance(classA, "name"), isNull);
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupInheritance_superclass_method() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodM];
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    expect(_inheritanceManager.lookupInheritance(classB, methodName),
+        same(methodM));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupInheritance_superclass_setter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String setterName = "s";
+    PropertyAccessorElement setterS =
+        ElementFactory.setterElement(setterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[setterS];
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    expect(_inheritanceManager.lookupInheritance(classB, "$setterName="),
+        same(setterS));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupInheritance_superclass_staticMember() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    (methodM as MethodElementImpl).static = true;
+    classA.methods = <MethodElement>[methodM];
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    expect(_inheritanceManager.lookupInheritance(classB, methodName), isNull);
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupMember_getter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "g";
+    PropertyAccessorElement getterG =
+        ElementFactory.getterElement(getterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getterG];
+    expect(_inheritanceManager.lookupMember(classA, getterName), same(getterG));
+    _assertNoErrors(classA);
+  }
+
+  void test_lookupMember_getter_static() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String getterName = "g";
+    PropertyAccessorElement getterG =
+        ElementFactory.getterElement(getterName, true, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[getterG];
+    expect(_inheritanceManager.lookupMember(classA, getterName), isNull);
+    _assertNoErrors(classA);
+  }
+
+  void test_lookupMember_method() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodM];
+    expect(_inheritanceManager.lookupMember(classA, methodName), same(methodM));
+    _assertNoErrors(classA);
+  }
+
+  void test_lookupMember_method_static() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElement methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    (methodM as MethodElementImpl).static = true;
+    classA.methods = <MethodElement>[methodM];
+    expect(_inheritanceManager.lookupMember(classA, methodName), isNull);
+    _assertNoErrors(classA);
+  }
+
+  void test_lookupMember_noMember() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    expect(_inheritanceManager.lookupMember(classA, "a"), isNull);
+    _assertNoErrors(classA);
+  }
+
+  void test_lookupMember_setter() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String setterName = "s";
+    PropertyAccessorElement setterS =
+        ElementFactory.setterElement(setterName, false, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[setterS];
+    expect(_inheritanceManager.lookupMember(classA, "$setterName="),
+        same(setterS));
+    _assertNoErrors(classA);
+  }
+
+  void test_lookupMember_setter_static() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String setterName = "s";
+    PropertyAccessorElement setterS =
+        ElementFactory.setterElement(setterName, true, _typeProvider.intType);
+    classA.accessors = <PropertyAccessorElement>[setterS];
+    expect(_inheritanceManager.lookupMember(classA, setterName), isNull);
+    _assertNoErrors(classA);
+  }
+
+  void test_lookupOverrides_noParentClasses() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElementImpl methodM =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodM];
+    expect(
+        _inheritanceManager.lookupOverrides(classA, methodName), hasLength(0));
+    _assertNoErrors(classA);
+  }
+
+  void test_lookupOverrides_overrideBaseClass() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElementImpl methodMinA =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodMinA];
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    MethodElementImpl methodMinB =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classB.methods = <MethodElement>[methodMinB];
+    List<ExecutableElement> overrides =
+        _inheritanceManager.lookupOverrides(classB, methodName);
+    expect(overrides, unorderedEquals([methodMinA]));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupOverrides_overrideInterface() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElementImpl methodMinA =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodMinA];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    classB.interfaces = <InterfaceType>[classA.type];
+    MethodElementImpl methodMinB =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classB.methods = <MethodElement>[methodMinB];
+    List<ExecutableElement> overrides =
+        _inheritanceManager.lookupOverrides(classB, methodName);
+    expect(overrides, unorderedEquals([methodMinA]));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+  }
+
+  void test_lookupOverrides_overrideTwoInterfaces() {
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    String methodName = "m";
+    MethodElementImpl methodMinA =
+        ElementFactory.methodElement(methodName, _typeProvider.intType);
+    classA.methods = <MethodElement>[methodMinA];
+    ClassElementImpl classB = ElementFactory.classElement2("B");
+    MethodElementImpl methodMinB =
+        ElementFactory.methodElement(methodName, _typeProvider.doubleType);
+    classB.methods = <MethodElement>[methodMinB];
+    ClassElementImpl classC = ElementFactory.classElement2("C");
+    classC.interfaces = <InterfaceType>[classA.type, classB.type];
+    MethodElementImpl methodMinC =
+        ElementFactory.methodElement(methodName, _typeProvider.numType);
+    classC.methods = <MethodElement>[methodMinC];
+    List<ExecutableElement> overrides =
+        _inheritanceManager.lookupOverrides(classC, methodName);
+    expect(overrides, unorderedEquals([methodMinA, methodMinB]));
+    _assertNoErrors(classA);
+    _assertNoErrors(classB);
+    _assertNoErrors(classC);
+  }
+
+  void _assertErrors(ClassElement classElt,
+      [List<ErrorCode> expectedErrorCodes = ErrorCode.EMPTY_LIST]) {
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    HashSet<AnalysisError> actualErrors =
+        _inheritanceManager.getErrors(classElt);
+    if (actualErrors != null) {
+      for (AnalysisError error in actualErrors) {
+        errorListener.onError(error);
+      }
+    }
+    errorListener.assertErrorsWithCodes(expectedErrorCodes);
+  }
+
+  void _assertNoErrors(ClassElement classElt) {
+    _assertErrors(classElt);
+  }
+
+  /**
+   * Create the inheritance manager used by the tests.
+   *
+   * @return the inheritance manager that was created
+   */
+  InheritanceManager _createInheritanceManager() {
+    AnalysisContext context = AnalysisContextFactory.contextWithCore();
+    FileBasedSource source =
+        new FileBasedSource(FileUtilities2.createFile("/test.dart"));
+    CompilationUnitElementImpl definingCompilationUnit =
+        new CompilationUnitElementImpl("test.dart");
+    definingCompilationUnit.librarySource =
+        definingCompilationUnit.source = source;
+    _definingLibrary = ElementFactory.library(context, "test");
+    _definingLibrary.definingCompilationUnit = definingCompilationUnit;
+    return new InheritanceManager(_definingLibrary);
+  }
+}
+
+@reflectiveTest
+class LibraryElementBuilderTest extends EngineTestCase {
+  /**
+   * The analysis context used to analyze sources.
+   */
+  InternalAnalysisContext _context;
+
+  /**
+   * Add a source file to the content provider. The file path should be absolute.
+   *
+   * @param filePath the path of the file being added
+   * @param contents the contents to be returned by the content provider for the specified file
+   * @return the source object representing the added file
+   */
+  Source addSource(String filePath, String contents) {
+    Source source = new FileBasedSource(FileUtilities2.createFile(filePath));
+    _context.setContents(source, contents);
+    return source;
+  }
+
+  @override
+  void setUp() {
+    _context = AnalysisContextFactory.contextWithCore();
+  }
+
+  @override
+  void tearDown() {
+    _context = null;
+    super.tearDown();
+  }
+
+  void test_accessorsAcrossFiles() {
+    Source librarySource = addSource(
+        "/lib.dart",
+        r'''
+library lib;
+part 'first.dart';
+part 'second.dart';''');
+    addSource(
+        "/first.dart",
+        r'''
+part of lib;
+int get V => 0;''');
+    addSource(
+        "/second.dart",
+        r'''
+part of lib;
+void set V(int v) {}''');
+    LibraryElement element = _buildLibrary(librarySource);
+    expect(element, isNotNull);
+    List<CompilationUnitElement> sourcedUnits = element.parts;
+    expect(sourcedUnits, hasLength(2));
+    List<PropertyAccessorElement> firstAccessors = sourcedUnits[0].accessors;
+    expect(firstAccessors, hasLength(1));
+    List<PropertyAccessorElement> secondAccessors = sourcedUnits[1].accessors;
+    expect(secondAccessors, hasLength(1));
+    expect(secondAccessors[0].variable, same(firstAccessors[0].variable));
+  }
+
+  void test_empty() {
+    Source librarySource = addSource("/lib.dart", "library lib;");
+    LibraryElement element = _buildLibrary(librarySource);
+    expect(element, isNotNull);
+    expect(element.name, "lib");
+    expect(element.entryPoint, isNull);
+    expect(element.importedLibraries, hasLength(0));
+    expect(element.imports, hasLength(0));
+    expect(element.library, same(element));
+    expect(element.prefixes, hasLength(0));
+    expect(element.parts, hasLength(0));
+    CompilationUnitElement unit = element.definingCompilationUnit;
+    expect(unit, isNotNull);
+    expect(unit.name, "lib.dart");
+    expect(unit.library, element);
+    expect(unit.accessors, hasLength(0));
+    expect(unit.functions, hasLength(0));
+    expect(unit.functionTypeAliases, hasLength(0));
+    expect(unit.types, hasLength(0));
+    expect(unit.topLevelVariables, hasLength(0));
+  }
+
+  void test_missingLibraryDirectiveWithPart() {
+    addSource("/a.dart", "part of lib;");
+    Source librarySource = addSource("/lib.dart", "part 'a.dart';");
+    LibraryElement element = _buildLibrary(
+        librarySource, [ResolverErrorCode.MISSING_LIBRARY_DIRECTIVE_WITH_PART]);
+    expect(element, isNotNull);
+  }
+
+  void test_missingPartOfDirective() {
+    addSource("/a.dart", "class A {}");
+    Source librarySource = addSource(
+        "/lib.dart",
+        r'''
+library lib;
+
+part 'a.dart';''');
+    LibraryElement element =
+        _buildLibrary(librarySource, [CompileTimeErrorCode.PART_OF_NON_PART]);
+    expect(element, isNotNull);
+  }
+
+  void test_multipleFiles() {
+    Source librarySource = addSource(
+        "/lib.dart",
+        r'''
+library lib;
+part 'first.dart';
+part 'second.dart';
+
+class A {}''');
+    addSource(
+        "/first.dart",
+        r'''
+part of lib;
+class B {}''');
+    addSource(
+        "/second.dart",
+        r'''
+part of lib;
+class C {}''');
+    LibraryElement element = _buildLibrary(librarySource);
+    expect(element, isNotNull);
+    List<CompilationUnitElement> sourcedUnits = element.parts;
+    expect(sourcedUnits, hasLength(2));
+    _assertTypes(element.definingCompilationUnit, ["A"]);
+    if (sourcedUnits[0].name == "first.dart") {
+      _assertTypes(sourcedUnits[0], ["B"]);
+      _assertTypes(sourcedUnits[1], ["C"]);
+    } else {
+      _assertTypes(sourcedUnits[0], ["C"]);
+      _assertTypes(sourcedUnits[1], ["B"]);
+    }
+  }
+
+  void test_singleFile() {
+    Source librarySource = addSource(
+        "/lib.dart",
+        r'''
+library lib;
+
+class A {}''');
+    LibraryElement element = _buildLibrary(librarySource);
+    expect(element, isNotNull);
+    _assertTypes(element.definingCompilationUnit, ["A"]);
+  }
+
+  /**
+   * Ensure that there are elements representing all of the types in the given array of type names.
+   *
+   * @param unit the compilation unit containing the types
+   * @param typeNames the names of the types that should be found
+   */
+  void _assertTypes(CompilationUnitElement unit, List<String> typeNames) {
+    expect(unit, isNotNull);
+    List<ClassElement> types = unit.types;
+    expect(types, hasLength(typeNames.length));
+    for (ClassElement type in types) {
+      expect(type, isNotNull);
+      String actualTypeName = type.displayName;
+      bool wasExpected = false;
+      for (String expectedTypeName in typeNames) {
+        if (expectedTypeName == actualTypeName) {
+          wasExpected = true;
+        }
+      }
+      if (!wasExpected) {
+        fail("Found unexpected type $actualTypeName");
+      }
+    }
+  }
+
+  /**
+   * Build the element model for the library whose defining compilation unit has the given source.
+   *
+   * @param librarySource the source of the defining compilation unit for the library
+   * @param expectedErrorCodes the errors that are expected to be found while building the element
+   *          model
+   * @return the element model that was built for the library
+   * @throws Exception if the element model could not be built
+   */
+  LibraryElement _buildLibrary(Source librarySource,
+      [List<ErrorCode> expectedErrorCodes = ErrorCode.EMPTY_LIST]) {
+    LibraryResolver resolver = new LibraryResolver(_context);
+    LibraryElementBuilder builder = new LibraryElementBuilder(
+        resolver.analysisContext, resolver.errorListener);
+    Library library = resolver.createLibrary(librarySource);
+    LibraryElement element = builder.buildLibrary(library);
+    GatheringErrorListener listener = new GatheringErrorListener();
+    listener.addAll2(resolver.errorListener);
+    listener.assertErrorsWithCodes(expectedErrorCodes);
+    return element;
+  }
+}
+
+@reflectiveTest
+class LibraryImportScopeTest extends ResolverTestCase {
+  void test_conflictingImports() {
+    AnalysisContext context = AnalysisContextFactory.contextWithCore();
+    String typeNameA = "A";
+    String typeNameB = "B";
+    String typeNameC = "C";
+    ClassElement typeA = ElementFactory.classElement2(typeNameA);
+    ClassElement typeB1 = ElementFactory.classElement2(typeNameB);
+    ClassElement typeB2 = ElementFactory.classElement2(typeNameB);
+    ClassElement typeC = ElementFactory.classElement2(typeNameC);
+    LibraryElement importedLibrary1 = createTestLibrary(context, "imported1");
+    (importedLibrary1.definingCompilationUnit as CompilationUnitElementImpl)
+        .types = <ClassElement>[typeA, typeB1];
+    ImportElementImpl import1 =
+        ElementFactory.importFor(importedLibrary1, null);
+    LibraryElement importedLibrary2 = createTestLibrary(context, "imported2");
+    (importedLibrary2.definingCompilationUnit as CompilationUnitElementImpl)
+        .types = <ClassElement>[typeB2, typeC];
+    ImportElementImpl import2 =
+        ElementFactory.importFor(importedLibrary2, null);
+    LibraryElementImpl importingLibrary =
+        createTestLibrary(context, "importing");
+    importingLibrary.imports = <ImportElement>[import1, import2];
+    {
+      GatheringErrorListener errorListener = new GatheringErrorListener();
+      Scope scope = new LibraryImportScope(importingLibrary, errorListener);
+      expect(scope.lookup(AstFactory.identifier3(typeNameA), importingLibrary),
+          typeA);
+      errorListener.assertNoErrors();
+      expect(scope.lookup(AstFactory.identifier3(typeNameC), importingLibrary),
+          typeC);
+      errorListener.assertNoErrors();
+      Element element =
+          scope.lookup(AstFactory.identifier3(typeNameB), importingLibrary);
+      errorListener.assertErrorsWithCodes([StaticWarningCode.AMBIGUOUS_IMPORT]);
+      EngineTestCase.assertInstanceOf((obj) => obj is MultiplyDefinedElement,
+          MultiplyDefinedElement, element);
+      List<Element> conflictingElements =
+          (element as MultiplyDefinedElement).conflictingElements;
+      expect(conflictingElements, hasLength(2));
+      if (identical(conflictingElements[0], typeB1)) {
+        expect(conflictingElements[1], same(typeB2));
+      } else if (identical(conflictingElements[0], typeB2)) {
+        expect(conflictingElements[1], same(typeB1));
+      } else {
+        expect(conflictingElements[0], same(typeB1));
+      }
+    }
+    {
+      GatheringErrorListener errorListener = new GatheringErrorListener();
+      Scope scope = new LibraryImportScope(importingLibrary, errorListener);
+      Identifier identifier = AstFactory.identifier3(typeNameB);
+      AstFactory.methodDeclaration(null, AstFactory.typeName3(identifier), null,
+          null, AstFactory.identifier3("foo"), null);
+      Element element = scope.lookup(identifier, importingLibrary);
+      errorListener.assertErrorsWithCodes([StaticWarningCode.AMBIGUOUS_IMPORT]);
+      EngineTestCase.assertInstanceOf((obj) => obj is MultiplyDefinedElement,
+          MultiplyDefinedElement, element);
+    }
+  }
+
+  void test_creation_empty() {
+    LibraryElement definingLibrary = createDefaultTestLibrary();
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    new LibraryImportScope(definingLibrary, errorListener);
+  }
+
+  void test_creation_nonEmpty() {
+    AnalysisContext context = AnalysisContextFactory.contextWithCore();
+    String importedTypeName = "A";
+    ClassElement importedType =
+        new ClassElementImpl.forNode(AstFactory.identifier3(importedTypeName));
+    LibraryElement importedLibrary = createTestLibrary(context, "imported");
+    (importedLibrary.definingCompilationUnit as CompilationUnitElementImpl)
+        .types = <ClassElement>[importedType];
+    LibraryElementImpl definingLibrary =
+        createTestLibrary(context, "importing");
+    ImportElementImpl importElement = new ImportElementImpl(0);
+    importElement.importedLibrary = importedLibrary;
+    definingLibrary.imports = <ImportElement>[importElement];
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    Scope scope = new LibraryImportScope(definingLibrary, errorListener);
+    expect(
+        scope.lookup(AstFactory.identifier3(importedTypeName), definingLibrary),
+        importedType);
+  }
+
+  void test_getErrorListener() {
+    LibraryElement definingLibrary = createDefaultTestLibrary();
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    LibraryImportScope scope =
+        new LibraryImportScope(definingLibrary, errorListener);
+    expect(scope.errorListener, errorListener);
+  }
+
+  void test_nonConflictingImports_fromSdk() {
+    AnalysisContext context = AnalysisContextFactory.contextWithCore();
+    String typeName = "List";
+    ClassElement type = ElementFactory.classElement2(typeName);
+    LibraryElement importedLibrary = createTestLibrary(context, "lib");
+    (importedLibrary.definingCompilationUnit as CompilationUnitElementImpl)
+        .types = <ClassElement>[type];
+    ImportElementImpl importCore = ElementFactory.importFor(
+        context.getLibraryElement(context.sourceFactory.forUri("dart:core")),
+        null);
+    ImportElementImpl importLib =
+        ElementFactory.importFor(importedLibrary, null);
+    LibraryElementImpl importingLibrary =
+        createTestLibrary(context, "importing");
+    importingLibrary.imports = <ImportElement>[importCore, importLib];
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    Scope scope = new LibraryImportScope(importingLibrary, errorListener);
+    expect(
+        scope.lookup(AstFactory.identifier3(typeName), importingLibrary), type);
+    errorListener
+        .assertErrorsWithCodes([StaticWarningCode.CONFLICTING_DART_IMPORT]);
+  }
+
+  void test_nonConflictingImports_sameElement() {
+    AnalysisContext context = AnalysisContextFactory.contextWithCore();
+    String typeNameA = "A";
+    String typeNameB = "B";
+    ClassElement typeA = ElementFactory.classElement2(typeNameA);
+    ClassElement typeB = ElementFactory.classElement2(typeNameB);
+    LibraryElement importedLibrary = createTestLibrary(context, "imported");
+    (importedLibrary.definingCompilationUnit as CompilationUnitElementImpl)
+        .types = <ClassElement>[typeA, typeB];
+    ImportElementImpl import1 = ElementFactory.importFor(importedLibrary, null);
+    ImportElementImpl import2 = ElementFactory.importFor(importedLibrary, null);
+    LibraryElementImpl importingLibrary =
+        createTestLibrary(context, "importing");
+    importingLibrary.imports = <ImportElement>[import1, import2];
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    Scope scope = new LibraryImportScope(importingLibrary, errorListener);
+    expect(scope.lookup(AstFactory.identifier3(typeNameA), importingLibrary),
+        typeA);
+    errorListener.assertNoErrors();
+    expect(scope.lookup(AstFactory.identifier3(typeNameB), importingLibrary),
+        typeB);
+    errorListener.assertNoErrors();
+  }
+
+  void test_prefixedAndNonPrefixed() {
+    AnalysisContext context = AnalysisContextFactory.contextWithCore();
+    String typeName = "C";
+    String prefixName = "p";
+    ClassElement prefixedType = ElementFactory.classElement2(typeName);
+    ClassElement nonPrefixedType = ElementFactory.classElement2(typeName);
+    LibraryElement prefixedLibrary =
+        createTestLibrary(context, "import.prefixed");
+    (prefixedLibrary.definingCompilationUnit as CompilationUnitElementImpl)
+        .types = <ClassElement>[prefixedType];
+    ImportElementImpl prefixedImport = ElementFactory.importFor(
+        prefixedLibrary, ElementFactory.prefix(prefixName));
+    LibraryElement nonPrefixedLibrary =
+        createTestLibrary(context, "import.nonPrefixed");
+    (nonPrefixedLibrary.definingCompilationUnit as CompilationUnitElementImpl)
+        .types = <ClassElement>[nonPrefixedType];
+    ImportElementImpl nonPrefixedImport =
+        ElementFactory.importFor(nonPrefixedLibrary, null);
+    LibraryElementImpl importingLibrary =
+        createTestLibrary(context, "importing");
+    importingLibrary.imports = <ImportElement>[
+      prefixedImport,
+      nonPrefixedImport
+    ];
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    Scope scope = new LibraryImportScope(importingLibrary, errorListener);
+    Element prefixedElement = scope.lookup(
+        AstFactory.identifier5(prefixName, typeName), importingLibrary);
+    errorListener.assertNoErrors();
+    expect(prefixedElement, same(prefixedType));
+    Element nonPrefixedElement =
+        scope.lookup(AstFactory.identifier3(typeName), importingLibrary);
+    errorListener.assertNoErrors();
+    expect(nonPrefixedElement, same(nonPrefixedType));
+  }
+}
+
+@reflectiveTest
+class LibraryResolver2Test extends ResolverTestCase {
+  LibraryResolver2 _resolver;
+
+  Source _coreLibrarySource;
+
+  Source _asyncLibrarySource;
+
+  @override
+  void setUp() {
+    super.setUp();
+    _resolver = new LibraryResolver2(analysisContext2);
+    _coreLibrarySource =
+        analysisContext2.sourceFactory.forUri(DartSdk.DART_CORE);
+    _asyncLibrarySource =
+        analysisContext2.sourceFactory.forUri(DartSdk.DART_ASYNC);
+  }
+
+  void test_imports_relative() {
+    Source sourceA = addSource(r'''
+library libA;
+import 'libB.dart';
+class A {}''');
+    Source sourceB = addNamedSource(
+        "/libB.dart",
+        r'''
+library libB;
+import 'test.dart
+class B {}''');
+    List<ResolvableLibrary> cycle = new List<ResolvableLibrary>();
+    ResolvableLibrary coreLib = _createResolvableLibrary(_coreLibrarySource);
+    coreLib.libraryElement = analysisContext2
+        .computeLibraryElement(_coreLibrarySource) as LibraryElementImpl;
+    ResolvableLibrary asyncLib = _createResolvableLibrary(_asyncLibrarySource);
+    asyncLib.libraryElement = analysisContext2
+        .computeLibraryElement(_asyncLibrarySource) as LibraryElementImpl;
+    ResolvableLibrary libA = _createResolvableLibrary(sourceA);
+    ResolvableLibrary libB = _createResolvableLibrary(sourceB);
+    libA.importedLibraries = <ResolvableLibrary>[coreLib, asyncLib, libB];
+    libB.importedLibraries = <ResolvableLibrary>[coreLib, asyncLib, libA];
+    cycle.add(libA);
+    cycle.add(libB);
+    LibraryElement library = _resolver.resolveLibrary(sourceA, cycle);
+    List<LibraryElement> importedLibraries = library.importedLibraries;
+    assertNamedElements(importedLibraries, ["dart.core", "libB"]);
+  }
+
+  ResolvableLibrary _createResolvableLibrary(Source source) {
+    CompilationUnit unit = analysisContext2.parseCompilationUnit(source);
+    ResolvableLibrary resolvableLibrary = new ResolvableLibrary(source);
+    resolvableLibrary.resolvableCompilationUnits = <ResolvableCompilationUnit>[
+      new ResolvableCompilationUnit(source, unit)
+    ];
+    return resolvableLibrary;
+  }
+}
+
+@reflectiveTest
+class LibraryResolverTest extends ResolverTestCase {
+  LibraryResolver _resolver;
+
+  @override
+  void setUp() {
+    super.setUp();
+    _resolver = new LibraryResolver(analysisContext2);
+  }
+
+  void test_imports_dart_html() {
+    Source source = addSource(r'''
+library libA;
+import 'dart:html';
+class A {}''');
+    LibraryElement library = _resolver.resolveLibrary(source, true);
+    List<LibraryElement> importedLibraries = library.importedLibraries;
+    assertNamedElements(importedLibraries, ["dart.core", "dart.dom.html"]);
+  }
+
+  void test_imports_none() {
+    Source source = addSource(r'''
+library libA;
+class A {}''');
+    LibraryElement library = _resolver.resolveLibrary(source, true);
+    List<LibraryElement> importedLibraries = library.importedLibraries;
+    assertNamedElements(importedLibraries, ["dart.core"]);
+  }
+
+  void test_imports_relative() {
+    addNamedSource("/libB.dart", "library libB;");
+    Source source = addSource(r'''
+library libA;
+import 'libB.dart';
+class A {}''');
+    LibraryElement library = _resolver.resolveLibrary(source, true);
+    List<LibraryElement> importedLibraries = library.importedLibraries;
+    assertNamedElements(importedLibraries, ["dart.core", "libB"]);
+  }
+}
+
+@reflectiveTest
+class LibraryScopeTest extends ResolverTestCase {
+  void test_creation_empty() {
+    LibraryElement definingLibrary = createDefaultTestLibrary();
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    new LibraryScope(definingLibrary, errorListener);
+  }
+
+  void test_creation_nonEmpty() {
+    AnalysisContext context = AnalysisContextFactory.contextWithCore();
+    String importedTypeName = "A";
+    ClassElement importedType =
+        new ClassElementImpl.forNode(AstFactory.identifier3(importedTypeName));
+    LibraryElement importedLibrary = createTestLibrary(context, "imported");
+    (importedLibrary.definingCompilationUnit as CompilationUnitElementImpl)
+        .types = <ClassElement>[importedType];
+    LibraryElementImpl definingLibrary =
+        createTestLibrary(context, "importing");
+    ImportElementImpl importElement = new ImportElementImpl(0);
+    importElement.importedLibrary = importedLibrary;
+    definingLibrary.imports = <ImportElement>[importElement];
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    Scope scope = new LibraryScope(definingLibrary, errorListener);
+    expect(
+        scope.lookup(AstFactory.identifier3(importedTypeName), definingLibrary),
+        importedType);
+  }
+
+  void test_getErrorListener() {
+    LibraryElement definingLibrary = createDefaultTestLibrary();
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    LibraryScope scope = new LibraryScope(definingLibrary, errorListener);
+    expect(scope.errorListener, errorListener);
+  }
+}
+
+@reflectiveTest
+class LibraryTest extends EngineTestCase {
+  /**
+   * The error listener to which all errors will be reported.
+   */
+  GatheringErrorListener _errorListener;
+
+  /**
+   * The analysis context to pass in to all libraries created by the tests.
+   */
+  InternalAnalysisContext _analysisContext;
+
+  /**
+   * The library used by the tests.
+   */
+  Library _library;
+
+  @override
+  void setUp() {
+    _analysisContext = AnalysisContextFactory.contextWithCore();
+    _errorListener = new GatheringErrorListener();
+    _library = _createLibrary("/lib.dart");
+  }
+
+  @override
+  void tearDown() {
+    _errorListener = null;
+    _analysisContext = null;
+    _library = null;
+    super.tearDown();
+  }
+
+  void test_getExplicitlyImportsCore() {
+    expect(_library.explicitlyImportsCore, isFalse);
+    _errorListener.assertNoErrors();
+  }
+
+  void test_getExports() {
+    expect(_library.exports, hasLength(0));
+    _errorListener.assertNoErrors();
+  }
+
+  void test_getImports() {
+    expect(_library.imports, hasLength(0));
+    _errorListener.assertNoErrors();
+  }
+
+  void test_getImportsAndExports() {
+    _library.importedLibraries = <Library>[_createLibrary("/imported.dart")];
+    _library.exportedLibraries = <Library>[_createLibrary("/exported.dart")];
+    expect(_library.importsAndExports, hasLength(2));
+    _errorListener.assertNoErrors();
+  }
+
+  void test_getLibraryScope() {
+    LibraryElementImpl element = new LibraryElementImpl.forNode(
+        _analysisContext, AstFactory.libraryIdentifier2(["lib"]));
+    element.definingCompilationUnit =
+        new CompilationUnitElementImpl("lib.dart");
+    _library.libraryElement = element;
+    expect(_library.libraryScope, isNotNull);
+    _errorListener.assertNoErrors();
+  }
+
+  void test_getLibrarySource() {
+    expect(_library.librarySource, isNotNull);
+  }
+
+  void test_setExplicitlyImportsCore() {
+    _library.explicitlyImportsCore = true;
+    expect(_library.explicitlyImportsCore, isTrue);
+    _errorListener.assertNoErrors();
+  }
+
+  void test_setExportedLibraries() {
+    Library exportLibrary = _createLibrary("/exported.dart");
+    _library.exportedLibraries = <Library>[exportLibrary];
+    List<Library> exports = _library.exports;
+    expect(exports, hasLength(1));
+    expect(exports[0], same(exportLibrary));
+    _errorListener.assertNoErrors();
+  }
+
+  void test_setImportedLibraries() {
+    Library importLibrary = _createLibrary("/imported.dart");
+    _library.importedLibraries = <Library>[importLibrary];
+    List<Library> imports = _library.imports;
+    expect(imports, hasLength(1));
+    expect(imports[0], same(importLibrary));
+    _errorListener.assertNoErrors();
+  }
+
+  void test_setLibraryElement() {
+    LibraryElementImpl element = new LibraryElementImpl.forNode(
+        _analysisContext, AstFactory.libraryIdentifier2(["lib"]));
+    _library.libraryElement = element;
+    expect(_library.libraryElement, same(element));
+  }
+
+  Library _createLibrary(String definingCompilationUnitPath) => new Library(
+      _analysisContext,
+      _errorListener,
+      new FileBasedSource(
+          FileUtilities2.createFile(definingCompilationUnitPath)));
+}
+
+@reflectiveTest
+class MemberMapTest {
+  /**
+   * The null type.
+   */
+  InterfaceType _nullType;
+
+  void setUp() {
+    _nullType = new TestTypeProvider().nullType;
+  }
+
+  void test_MemberMap_copyConstructor() {
+    MethodElement m1 = ElementFactory.methodElement("m1", _nullType);
+    MethodElement m2 = ElementFactory.methodElement("m2", _nullType);
+    MethodElement m3 = ElementFactory.methodElement("m3", _nullType);
+    MemberMap map = new MemberMap();
+    map.put(m1.name, m1);
+    map.put(m2.name, m2);
+    map.put(m3.name, m3);
+    MemberMap copy = new MemberMap.from(map);
+    expect(copy.size, map.size);
+    expect(copy.get(m1.name), m1);
+    expect(copy.get(m2.name), m2);
+    expect(copy.get(m3.name), m3);
+  }
+
+  void test_MemberMap_override() {
+    MethodElement m1 = ElementFactory.methodElement("m", _nullType);
+    MethodElement m2 = ElementFactory.methodElement("m", _nullType);
+    MemberMap map = new MemberMap();
+    map.put(m1.name, m1);
+    map.put(m2.name, m2);
+    expect(map.size, 1);
+    expect(map.get("m"), m2);
+  }
+
+  void test_MemberMap_put() {
+    MethodElement m1 = ElementFactory.methodElement("m1", _nullType);
+    MemberMap map = new MemberMap();
+    expect(map.size, 0);
+    map.put(m1.name, m1);
+    expect(map.size, 1);
+    expect(map.get("m1"), m1);
+  }
+}
+
+/**
+ * An analysis context that has a fake SDK that is much smaller and faster for
+ * testing purposes.
+ */
+class NewAnalysisContextForTests extends newContext.AnalysisContextImpl {
+  @override
+  void set analysisOptions(AnalysisOptions options) {
+    AnalysisOptions currentOptions = analysisOptions;
+    bool needsRecompute = currentOptions.analyzeFunctionBodiesPredicate !=
+            options.analyzeFunctionBodiesPredicate ||
+        currentOptions.generateImplicitErrors !=
+            options.generateImplicitErrors ||
+        currentOptions.generateSdkErrors != options.generateSdkErrors ||
+        currentOptions.dart2jsHint != options.dart2jsHint ||
+        (currentOptions.hint && !options.hint) ||
+        currentOptions.preserveComments != options.preserveComments ||
+        currentOptions.enableStrictCallChecks != options.enableStrictCallChecks;
+    if (needsRecompute) {
+      fail(
+          "Cannot set options that cause the sources to be reanalyzed in a test context");
+    }
+    super.analysisOptions = options;
+  }
+
+  @override
+  bool exists(Source source) =>
+      super.exists(source) || sourceFactory.dartSdk.context.exists(source);
+
+  @override
+  TimestampedData<String> getContents(Source source) {
+    if (source.isInSystemLibrary) {
+      return sourceFactory.dartSdk.context.getContents(source);
+    }
+    return super.getContents(source);
+  }
+
+  @override
+  int getModificationStamp(Source source) {
+    if (source.isInSystemLibrary) {
+      return sourceFactory.dartSdk.context.getModificationStamp(source);
+    }
+    return super.getModificationStamp(source);
+  }
+
+  /**
+   * Set the analysis options, even if they would force re-analysis. This method should only be
+   * invoked before the fake SDK is initialized.
+   *
+   * @param options the analysis options to be set
+   */
+  void _internalSetAnalysisOptions(AnalysisOptions options) {
+    super.analysisOptions = options;
+  }
+}
+
+@reflectiveTest
+class NonHintCodeTest extends ResolverTestCase {
+  void test_deadCode_deadBlock_conditionalElse_debugConst() {
+    Source source = addSource(r'''
+const bool DEBUG = true;
+f() {
+  DEBUG ? 1 : 2;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_conditionalIf_debugConst() {
+    Source source = addSource(r'''
+const bool DEBUG = false;
+f() {
+  DEBUG ? 1 : 2;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_else() {
+    Source source = addSource(r'''
+const bool DEBUG = true;
+f() {
+  if(DEBUG) {} else {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_if_debugConst_prefixedIdentifier() {
+    Source source = addSource(r'''
+class A {
+  static const bool DEBUG = false;
+}
+f() {
+  if(A.DEBUG) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_if_debugConst_prefixedIdentifier2() {
+    Source source = addSource(r'''
+library L;
+import 'lib2.dart';
+f() {
+  if(A.DEBUG) {}
+}''');
+    addNamedSource(
+        "/lib2.dart",
+        r'''
+library lib2;
+class A {
+  static const bool DEBUG = false;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_if_debugConst_propertyAccessor() {
+    Source source = addSource(r'''
+library L;
+import 'lib2.dart' as LIB;
+f() {
+  if(LIB.A.DEBUG) {}
+}''');
+    addNamedSource(
+        "/lib2.dart",
+        r'''
+library lib2;
+class A {
+  static const bool DEBUG = false;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_if_debugConst_simpleIdentifier() {
+    Source source = addSource(r'''
+const bool DEBUG = false;
+f() {
+  if(DEBUG) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_deadCode_deadBlock_while_debugConst() {
+    Source source = addSource(r'''
+const bool DEBUG = false;
+f() {
+  while(DEBUG) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_deadCode_deadCatch_onCatchSubtype() {
+    Source source = addSource(r'''
+class A {}
+class B extends A {}
+f() {
+  try {} on B catch (e) {} on A catch (e) {} catch (e) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_deadCode_deadOperandLHS_and_debugConst() {
+    Source source = addSource(r'''
+const bool DEBUG = false;
+f() {
+  bool b = DEBUG && false;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_deadCode_deadOperandLHS_or_debugConst() {
+    Source source = addSource(r'''
+const bool DEBUG = true;
+f() {
+  bool b = DEBUG || true;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_divisionOptimization() {
+    Source source = addSource(r'''
+f(int x, int y) {
+  var v = x / y.toInt();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_divisionOptimization_supressIfDivisionNotDefinedInCore() {
+    Source source = addSource(r'''
+f(x, y) {
+  var v = (x / y).toInt();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_divisionOptimization_supressIfDivisionOverridden() {
+    Source source = addSource(r'''
+class A {
+  num operator /(x) { return x; }
+}
+f(A x, A y) {
+  var v = (x / y).toInt();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_duplicateImport_as() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart';
+import 'lib1.dart' as one;
+A a;
+one.A a2;''');
+    addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class A {}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_duplicateImport_hide() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart';
+import 'lib1.dart' hide A;
+A a;
+B b;''');
+    addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class A {}
+class B {}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_duplicateImport_show() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart';
+import 'lib1.dart' show A;
+A a;
+B b;''');
+    addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class A {}
+class B {}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_importDeferredLibraryWithLoadFunction() {
+    resolveWithErrors(<String>[
+      r'''
+library lib1;
+f() {}''',
+      r'''
+library root;
+import 'lib1.dart' deferred as lib1;
+main() { lib1.f(); }'''
+    ], ErrorCode.EMPTY_LIST);
+  }
+
+  void test_issue20904BuggyTypePromotionAtIfJoin_1() {
+    // https://code.google.com/p/dart/issues/detail?id=20904
+    Source source = addSource(r'''
+f(var message, var dynamic_) {
+  if (message is Function) {
+    message = dynamic_;
+  }
+  int s = message;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_issue20904BuggyTypePromotionAtIfJoin_3() {
+    // https://code.google.com/p/dart/issues/detail?id=20904
+    Source source = addSource(r'''
+f(var message) {
+  var dynamic_;
+  if (message is Function) {
+    message = dynamic_;
+  } else {
+    return;
+  }
+  int s = message;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_issue20904BuggyTypePromotionAtIfJoin_4() {
+    // https://code.google.com/p/dart/issues/detail?id=20904
+    Source source = addSource(r'''
+f(var message) {
+  if (message is Function) {
+    message = '';
+  } else {
+    return;
+  }
+  String s = message;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_missingReturn_emptyFunctionBody() {
+    Source source = addSource(r'''
+abstract class A {
+  int m();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_missingReturn_expressionFunctionBody() {
+    Source source = addSource("int f() => 0;");
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_missingReturn_noReturnType() {
+    Source source = addSource("f() {}");
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_missingReturn_voidReturnType() {
+    Source source = addSource("void f() {}");
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_overrideEqualsButNotHashCode() {
+    Source source = addSource(r'''
+class A {
+  bool operator ==(x) { return x; }
+  get hashCode => 0;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_overrideOnNonOverridingGetter_inInterface() {
+    Source source = addSource(r'''
+library dart.core;
+const override = null;
+class A {
+  int get m => 0;
+}
+class B implements A {
+  @override
+  int get m => 1;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_overrideOnNonOverridingGetter_inSuperclass() {
+    Source source = addSource(r'''
+library dart.core;
+const override = null;
+class A {
+  int get m => 0;
+}
+class B extends A {
+  @override
+  int get m => 1;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_overrideOnNonOverridingMethod_inInterface() {
+    Source source = addSource(r'''
+library dart.core;
+const override = null;
+class A {
+  int m() => 0;
+}
+class B implements A {
+  @override
+  int m() => 1;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_overrideOnNonOverridingMethod_inSuperclass() {
+    Source source = addSource(r'''
+library dart.core;
+const override = null;
+class A {
+  int m() => 0;
+}
+class B extends A {
+  @override
+  int m() => 1;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_overrideOnNonOverridingSetter_inInterface() {
+    Source source = addSource(r'''
+library dart.core;
+const override = null;
+class A {
+  set m(int x) {}
+}
+class B implements A {
+  @override
+  set m(int x) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_overrideOnNonOverridingSetter_inSuperclass() {
+    Source source = addSource(r'''
+library dart.core;
+const override = null;
+class A {
+  set m(int x) {}
+}
+class B extends A {
+  @override
+  set m(int x) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_propagatedFieldType() {
+    Source source = addSource(r'''
+class A { }
+class X<T> {
+  final x = new List<T>();
+}
+class Z {
+  final X<A> y = new X<A>();
+  foo() {
+    y.x.add(new A());
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_proxy_annotation_prefixed() {
+    Source source = addSource(r'''
+library L;
+@proxy
+class A {}
+f(var a) {
+  a = new A();
+  a.m();
+  var x = a.g;
+  a.s = 1;
+  var y = a + a;
+  a++;
+  ++a;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_proxy_annotation_prefixed2() {
+    Source source = addSource(r'''
+library L;
+@proxy
+class A {}
+class B {
+  f(var a) {
+    a = new A();
+    a.m();
+    var x = a.g;
+    a.s = 1;
+    var y = a + a;
+    a++;
+    ++a;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_proxy_annotation_prefixed3() {
+    Source source = addSource(r'''
+library L;
+class B {
+  f(var a) {
+    a = new A();
+    a.m();
+    var x = a.g;
+    a.s = 1;
+    var y = a + a;
+    a++;
+    ++a;
+  }
+}
+@proxy
+class A {}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_undefinedGetter_inSubtype() {
+    Source source = addSource(r'''
+class A {}
+class B extends A {
+  get b => 0;
+}
+f(var a) {
+  if(a is A) {
+    return a.b;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_undefinedMethod_assignmentExpression_inSubtype() {
+    Source source = addSource(r'''
+class A {}
+class B extends A {
+  operator +(B b) {return new B();}
+}
+f(var a, var a2) {
+  a = new A();
+  a2 = new A();
+  a += a2;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_undefinedMethod_dynamic() {
+    Source source = addSource(r'''
+class D<T extends dynamic> {
+  fieldAccess(T t) => t.abc;
+  methodAccess(T t) => t.xyz(1, 2, 'three');
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_undefinedMethod_inSubtype() {
+    Source source = addSource(r'''
+class A {}
+class B extends A {
+  b() {}
+}
+f() {
+  var a = new A();
+  a.b();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_undefinedMethod_unionType_all() {
+    Source source = addSource(r'''
+class A {
+  int m(int x) => 0;
+}
+class B {
+  String m() => '0';
+}
+f(A a, B b) {
+  var ab;
+  if (0 < 1) {
+    ab = a;
+  } else {
+    ab = b;
+  }
+  ab.m();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_undefinedMethod_unionType_some() {
+    Source source = addSource(r'''
+class A {
+  int m(int x) => 0;
+}
+class B {}
+f(A a, B b) {
+  var ab;
+  if (0 < 1) {
+    ab = a;
+  } else {
+    ab = b;
+  }
+  ab.m(0);
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_undefinedOperator_binaryExpression_inSubtype() {
+    Source source = addSource(r'''
+class A {}
+class B extends A {
+  operator +(B b) {}
+}
+f(var a) {
+  if(a is A) {
+    a + 1;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_undefinedOperator_indexBoth_inSubtype() {
+    Source source = addSource(r'''
+class A {}
+class B extends A {
+  operator [](int index) {}
+}
+f(var a) {
+  if(a is A) {
+    a[0]++;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_undefinedOperator_indexGetter_inSubtype() {
+    Source source = addSource(r'''
+class A {}
+class B extends A {
+  operator [](int index) {}
+}
+f(var a) {
+  if(a is A) {
+    a[0];
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_undefinedOperator_indexSetter_inSubtype() {
+    Source source = addSource(r'''
+class A {}
+class B extends A {
+  operator []=(i, v) {}
+}
+f(var a) {
+  if(a is A) {
+    a[0] = 1;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_undefinedOperator_postfixExpression() {
+    Source source = addSource(r'''
+class A {}
+class B extends A {
+  operator +(B b) {return new B();}
+}
+f(var a) {
+  if(a is A) {
+    a++;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_undefinedOperator_prefixExpression() {
+    Source source = addSource(r'''
+class A {}
+class B extends A {
+  operator +(B b) {return new B();}
+}
+f(var a) {
+  if(a is A) {
+    ++a;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_undefinedSetter_inSubtype() {
+    Source source = addSource(r'''
+class A {}
+class B extends A {
+  set b(x) {}
+}
+f(var a) {
+  if(a is A) {
+    a.b = 0;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_unnecessaryCast_13855_parameter_A() {
+    // dartbug.com/13855, dartbug.com/13732
+    Source source = addSource(r'''
+class A{
+  a() {}
+}
+class B<E> {
+  E e;
+  m() {
+    (e as A).a();
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unnecessaryCast_conditionalExpression() {
+    Source source = addSource(r'''
+abstract class I {}
+class A implements I {}
+class B implements I {}
+I m(A a, B b) {
+  return a == null ? b as I : a as I;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unnecessaryCast_dynamic_type() {
+    Source source = addSource(r'''
+m(v) {
+  var b = v as Object;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unnecessaryCast_generics() {
+    // dartbug.com/18953
+    Source source = addSource(r'''
+import 'dart:async';
+Future<int> f() => new Future.value(0);
+void g(bool c) {
+  (c ? f(): new Future.value(0) as Future<int>).then((int value) {});
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unnecessaryCast_type_dynamic() {
+    Source source = addSource(r'''
+m(v) {
+  var b = Object as dynamic;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedImport_annotationOnDirective() {
+    Source source = addSource(r'''
+library L;
+@A()
+import 'lib1.dart';''');
+    Source source2 = addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class A {
+  const A() {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    verify([source, source2]);
+  }
+
+  void test_unusedImport_as_equalPrefixes() {
+    // 18818
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart' as one;
+import 'lib2.dart' as one;
+one.A a;
+one.B b;''');
+    Source source2 = addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class A {}''');
+    Source source3 = addNamedSource(
+        "/lib2.dart",
+        r'''
+library lib2;
+class B {}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source);
+    assertNoErrors(source2);
+    assertNoErrors(source3);
+    verify([source, source2, source3]);
+  }
+
+  void test_unusedImport_core_library() {
+    Source source = addSource(r'''
+library L;
+import 'dart:core';''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedImport_export() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart';
+Two two;''');
+    addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+export 'lib2.dart';
+class One {}''');
+    addNamedSource(
+        "/lib2.dart",
+        r'''
+library lib2;
+class Two {}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedImport_export2() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart';
+Three three;''');
+    addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+export 'lib2.dart';
+class One {}''');
+    addNamedSource(
+        "/lib2.dart",
+        r'''
+library lib2;
+export 'lib3.dart';
+class Two {}''');
+    addNamedSource(
+        "/lib3.dart",
+        r'''
+library lib3;
+class Three {}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedImport_export_infiniteLoop() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart';
+Two two;''');
+    addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+export 'lib2.dart';
+class One {}''');
+    addNamedSource(
+        "/lib2.dart",
+        r'''
+library lib2;
+export 'lib3.dart';
+class Two {}''');
+    addNamedSource(
+        "/lib3.dart",
+        r'''
+library lib3;
+export 'lib2.dart';
+class Three {}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedImport_metadata() {
+    Source source = addSource(r'''
+library L;
+@A(x)
+import 'lib1.dart';
+class A {
+  final int value;
+  const A(this.value);
+}''');
+    addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+const x = 0;''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_unusedImport_prefix_topLevelFunction() {
+    Source source = addSource(r'''
+library L;
+import 'lib1.dart' hide topLevelFunction;
+import 'lib1.dart' as one show topLevelFunction;
+class A {
+  static void x() {
+    One o;
+    one.topLevelFunction();
+  }
+}''');
+    addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+class One {}
+topLevelFunction() {}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_useOfVoidResult_implicitReturnValue() {
+    Source source = addSource(r'''
+f() {}
+class A {
+  n() {
+    var a = f();
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_useOfVoidResult_nonVoidReturnValue() {
+    Source source = addSource(r'''
+int f() => 1;
+g() {
+  var a = f();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+}
+
+class PubSuggestionCodeTest extends ResolverTestCase {
+  void test_import_package() {
+    Source source = addSource("import 'package:somepackage/other.dart';");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [CompileTimeErrorCode.URI_DOES_NOT_EXIST]);
+  }
+
+  void test_import_packageWithDotDot() {
+    Source source = addSource("import 'package:somepackage/../other.dart';");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CompileTimeErrorCode.URI_DOES_NOT_EXIST,
+      HintCode.PACKAGE_IMPORT_CONTAINS_DOT_DOT
+    ]);
+  }
+
+  void test_import_packageWithLeadingDotDot() {
+    Source source = addSource("import 'package:../other.dart';");
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [
+      CompileTimeErrorCode.URI_DOES_NOT_EXIST,
+      HintCode.PACKAGE_IMPORT_CONTAINS_DOT_DOT
+    ]);
+  }
+
+  void test_import_referenceIntoLibDirectory() {
+    cacheSource("/myproj/pubspec.yaml", "");
+    cacheSource("/myproj/lib/other.dart", "");
+    Source source =
+        addNamedSource("/myproj/web/test.dart", "import '../lib/other.dart';");
+    computeLibrarySourceErrors(source);
+    assertErrors(
+        source, [HintCode.FILE_IMPORT_OUTSIDE_LIB_REFERENCES_FILE_INSIDE]);
+  }
+
+  void test_import_referenceIntoLibDirectory_no_pubspec() {
+    cacheSource("/myproj/lib/other.dart", "");
+    Source source =
+        addNamedSource("/myproj/web/test.dart", "import '../lib/other.dart';");
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_import_referenceOutOfLibDirectory() {
+    cacheSource("/myproj/pubspec.yaml", "");
+    cacheSource("/myproj/web/other.dart", "");
+    Source source =
+        addNamedSource("/myproj/lib/test.dart", "import '../web/other.dart';");
+    computeLibrarySourceErrors(source);
+    assertErrors(
+        source, [HintCode.FILE_IMPORT_INSIDE_LIB_REFERENCES_FILE_OUTSIDE]);
+  }
+
+  void test_import_referenceOutOfLibDirectory_no_pubspec() {
+    cacheSource("/myproj/web/other.dart", "");
+    Source source =
+        addNamedSource("/myproj/lib/test.dart", "import '../web/other.dart';");
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_import_valid_inside_lib1() {
+    cacheSource("/myproj/pubspec.yaml", "");
+    cacheSource("/myproj/lib/other.dart", "");
+    Source source =
+        addNamedSource("/myproj/lib/test.dart", "import 'other.dart';");
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_import_valid_inside_lib2() {
+    cacheSource("/myproj/pubspec.yaml", "");
+    cacheSource("/myproj/lib/bar/other.dart", "");
+    Source source = addNamedSource(
+        "/myproj/lib/foo/test.dart", "import '../bar/other.dart';");
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_import_valid_outside_lib() {
+    cacheSource("/myproj/pubspec.yaml", "");
+    cacheSource("/myproj/web/other.dart", "");
+    Source source =
+        addNamedSource("/myproj/lib2/test.dart", "import '../web/other.dart';");
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+}
+
+/**
+ * An AST visitor used to verify that all of the nodes in an AST structure that
+ * should have been resolved were resolved.
+ */
+class ResolutionVerifier extends RecursiveAstVisitor<Object> {
+  /**
+   * A set containing nodes that are known to not be resolvable and should
+   * therefore not cause the test to fail.
+   */
+  final Set<AstNode> _knownExceptions;
+
+  /**
+   * A list containing all of the AST nodes that were not resolved.
+   */
+  List<AstNode> _unresolvedNodes = new List<AstNode>();
+
+  /**
+   * A list containing all of the AST nodes that were resolved to an element of
+   * the wrong type.
+   */
+  List<AstNode> _wrongTypedNodes = new List<AstNode>();
+
+  /**
+   * Initialize a newly created verifier to verify that all of the identifiers
+   * in the visited AST structures that are expected to have been resolved have
+   * an element associated with them. Nodes in the set of [_knownExceptions] are
+   * not expected to have been resolved, even if they normally would have been
+   * expected to have been resolved.
+   */
+  ResolutionVerifier([this._knownExceptions]);
+
+  /**
+   * Assert that all of the visited identifiers were resolved.
+   */
+  void assertResolved() {
+    if (!_unresolvedNodes.isEmpty || !_wrongTypedNodes.isEmpty) {
+      StringBuffer buffer = new StringBuffer();
+      if (!_unresolvedNodes.isEmpty) {
+        buffer.write("Failed to resolve ");
+        buffer.write(_unresolvedNodes.length);
+        buffer.writeln(" nodes:");
+        _printNodes(buffer, _unresolvedNodes);
+      }
+      if (!_wrongTypedNodes.isEmpty) {
+        buffer.write("Resolved ");
+        buffer.write(_wrongTypedNodes.length);
+        buffer.writeln(" to the wrong type of element:");
+        _printNodes(buffer, _wrongTypedNodes);
+      }
+      fail(buffer.toString());
+    }
+  }
+
+  @override
+  Object visitAnnotation(Annotation node) {
+    node.visitChildren(this);
+    ElementAnnotation elementAnnotation = node.elementAnnotation;
+    if (elementAnnotation == null) {
+      if (_knownExceptions == null || !_knownExceptions.contains(node)) {
+        _unresolvedNodes.add(node);
+      }
+    } else if (elementAnnotation is! ElementAnnotation) {
+      _wrongTypedNodes.add(node);
+    }
+    return null;
+  }
+
+  @override
+  Object visitBinaryExpression(BinaryExpression node) {
+    node.visitChildren(this);
+    if (!node.operator.isUserDefinableOperator) {
+      return null;
+    }
+    DartType operandType = node.leftOperand.staticType;
+    if (operandType == null || operandType.isDynamic) {
+      return null;
+    }
+    return _checkResolved(
+        node, node.staticElement, (node) => node is MethodElement);
+  }
+
+  @override
+  Object visitCommentReference(CommentReference node) => null;
+
+  @override
+  Object visitCompilationUnit(CompilationUnit node) {
+    node.visitChildren(this);
+    return _checkResolved(
+        node, node.element, (node) => node is CompilationUnitElement);
+  }
+
+  @override
+  Object visitExportDirective(ExportDirective node) =>
+      _checkResolved(node, node.element, (node) => node is ExportElement);
+
+  @override
+  Object visitFunctionDeclaration(FunctionDeclaration node) {
+    node.visitChildren(this);
+    if (node.element is LibraryElement) {
+      _wrongTypedNodes.add(node);
+    }
+    return null;
+  }
+
+  @override
+  Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
+    node.visitChildren(this);
+    // TODO(brianwilkerson) If we start resolving function expressions, then
+    // conditionally check to see whether the node was resolved correctly.
+    return null;
+    //checkResolved(node, node.getElement(), FunctionElement.class);
+  }
+
+  @override
+  Object visitImportDirective(ImportDirective node) {
+    // Not sure how to test the combinators given that it isn't an error if the
+    // names are not defined.
+    _checkResolved(node, node.element, (node) => node is ImportElement);
+    SimpleIdentifier prefix = node.prefix;
+    if (prefix == null) {
+      return null;
+    }
+    return _checkResolved(
+        prefix, prefix.staticElement, (node) => node is PrefixElement);
+  }
+
+  @override
+  Object visitIndexExpression(IndexExpression node) {
+    node.visitChildren(this);
+    DartType targetType = node.realTarget.staticType;
+    if (targetType == null || targetType.isDynamic) {
+      return null;
+    }
+    return _checkResolved(
+        node, node.staticElement, (node) => node is MethodElement);
+  }
+
+  @override
+  Object visitLibraryDirective(LibraryDirective node) =>
+      _checkResolved(node, node.element, (node) => node is LibraryElement);
+
+  @override
+  Object visitNamedExpression(NamedExpression node) =>
+      node.expression.accept(this);
+
+  @override
+  Object visitPartDirective(PartDirective node) => _checkResolved(
+      node, node.element, (node) => node is CompilationUnitElement);
+
+  @override
+  Object visitPartOfDirective(PartOfDirective node) =>
+      _checkResolved(node, node.element, (node) => node is LibraryElement);
+
+  @override
+  Object visitPostfixExpression(PostfixExpression node) {
+    node.visitChildren(this);
+    if (!node.operator.isUserDefinableOperator) {
+      return null;
+    }
+    DartType operandType = node.operand.staticType;
+    if (operandType == null || operandType.isDynamic) {
+      return null;
+    }
+    return _checkResolved(
+        node, node.staticElement, (node) => node is MethodElement);
+  }
+
+  @override
+  Object visitPrefixedIdentifier(PrefixedIdentifier node) {
+    SimpleIdentifier prefix = node.prefix;
+    prefix.accept(this);
+    DartType prefixType = prefix.staticType;
+    if (prefixType == null || prefixType.isDynamic) {
+      return null;
+    }
+    return _checkResolved(node, node.staticElement, null);
+  }
+
+  @override
+  Object visitPrefixExpression(PrefixExpression node) {
+    node.visitChildren(this);
+    if (!node.operator.isUserDefinableOperator) {
+      return null;
+    }
+    DartType operandType = node.operand.staticType;
+    if (operandType == null || operandType.isDynamic) {
+      return null;
+    }
+    return _checkResolved(
+        node, node.staticElement, (node) => node is MethodElement);
+  }
+
+  @override
+  Object visitPropertyAccess(PropertyAccess node) {
+    Expression target = node.realTarget;
+    target.accept(this);
+    DartType targetType = target.staticType;
+    if (targetType == null || targetType.isDynamic) {
+      return null;
+    }
+    return node.propertyName.accept(this);
+  }
+
+  @override
+  Object visitSimpleIdentifier(SimpleIdentifier node) {
+    if (node.name == "void") {
+      return null;
+    }
+    AstNode parent = node.parent;
+    if (parent is MethodInvocation) {
+      MethodInvocation invocation = parent;
+      if (identical(invocation.methodName, node)) {
+        Expression target = invocation.realTarget;
+        DartType targetType = target == null ? null : target.staticType;
+        if (targetType == null || targetType.isDynamic) {
+          return null;
+        }
+      }
+    }
+    return _checkResolved(node, node.staticElement, null);
+  }
+
+  Object _checkResolved(
+      AstNode node, Element element, Predicate<Element> predicate) {
+    if (element == null) {
+      if (_knownExceptions == null || !_knownExceptions.contains(node)) {
+        _unresolvedNodes.add(node);
+      }
+    } else if (predicate != null) {
+      if (!predicate(element)) {
+        _wrongTypedNodes.add(node);
+      }
+    }
+    return null;
+  }
+
+  String _getFileName(AstNode node) {
+    // TODO (jwren) there are two copies of this method, one here and one in
+    // StaticTypeVerifier, they should be resolved into a single method
+    if (node != null) {
+      AstNode root = node.root;
+      if (root is CompilationUnit) {
+        CompilationUnit rootCU = root;
+        if (rootCU.element != null) {
+          return rootCU.element.source.fullName;
+        } else {
+          return "<unknown file- CompilationUnit.getElement() returned null>";
+        }
+      } else {
+        return "<unknown file- CompilationUnit.getRoot() is not a CompilationUnit>";
+      }
+    }
+    return "<unknown file- ASTNode is null>";
+  }
+
+  void _printNodes(StringBuffer buffer, List<AstNode> nodes) {
+    for (AstNode identifier in nodes) {
+      buffer.write("  ");
+      buffer.write(identifier.toString());
+      buffer.write(" (");
+      buffer.write(_getFileName(identifier));
+      buffer.write(" : ");
+      buffer.write(identifier.offset);
+      buffer.writeln(")");
+    }
+  }
+}
+
+class ResolverTestCase extends EngineTestCase {
+  /**
+   * The analysis context used to parse the compilation units being resolved.
+   */
+  InternalAnalysisContext analysisContext2;
+
+  /**
+   * Specifies if [assertErrors] should check for [HintCode.UNUSED_ELEMENT] and
+   * [HintCode.UNUSED_FIELD].
+   */
+  bool enableUnusedElement = false;
+
+  /**
+   * Specifies if [assertErrors] should check for [HintCode.UNUSED_LOCAL_VARIABLE].
+   */
+  bool enableUnusedLocalVariable = false;
+
+  AnalysisContext get analysisContext => analysisContext2;
+
+  /**
+   * Return a type provider that can be used to test the results of resolution.
+   *
+   * @return a type provider
+   * @throws AnalysisException if dart:core cannot be resolved
+   */
+  TypeProvider get typeProvider => analysisContext2.typeProvider;
+
+  /**
+   * Add a source file to the content provider. The file path should be absolute.
+   *
+   * @param filePath the path of the file being added
+   * @param contents the contents to be returned by the content provider for the specified file
+   * @return the source object representing the added file
+   */
+  Source addNamedSource(String filePath, String contents) {
+    Source source = cacheSource(filePath, contents);
+    ChangeSet changeSet = new ChangeSet();
+    changeSet.addedSource(source);
+    analysisContext2.applyChanges(changeSet);
+    return source;
+  }
+
+  /**
+   * Add a source file to the content provider.
+   *
+   * @param contents the contents to be returned by the content provider for the specified file
+   * @return the source object representing the added file
+   */
+  Source addSource(String contents) => addNamedSource("/test.dart", contents);
+
+  /**
+   * Assert that the number of errors reported against the given source matches the number of errors
+   * that are given and that they have the expected error codes. The order in which the errors were
+   * gathered is ignored.
+   *
+   * @param source the source against which the errors should have been reported
+   * @param expectedErrorCodes the error codes of the errors that should have been reported
+   * @throws AnalysisException if the reported errors could not be computed
+   * @throws AssertionFailedError if a different number of errors have been reported than were
+   *           expected
+   */
+  void assertErrors(Source source,
+      [List<ErrorCode> expectedErrorCodes = ErrorCode.EMPTY_LIST]) {
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    for (AnalysisError error in analysisContext2.computeErrors(source)) {
+      ErrorCode errorCode = error.errorCode;
+      if (!enableUnusedElement &&
+          (errorCode == HintCode.UNUSED_ELEMENT ||
+              errorCode == HintCode.UNUSED_FIELD)) {
+        continue;
+      }
+      if (!enableUnusedLocalVariable &&
+          (errorCode == HintCode.UNUSED_CATCH_CLAUSE ||
+              errorCode == HintCode.UNUSED_CATCH_STACK ||
+              errorCode == HintCode.UNUSED_LOCAL_VARIABLE)) {
+        continue;
+      }
+      errorListener.onError(error);
+    }
+    errorListener.assertErrorsWithCodes(expectedErrorCodes);
+  }
+
+  /**
+   * Assert that no errors have been reported against the given source.
+   *
+   * @param source the source against which no errors should have been reported
+   * @throws AnalysisException if the reported errors could not be computed
+   * @throws AssertionFailedError if any errors have been reported
+   */
+  void assertNoErrors(Source source) {
+    assertErrors(source);
+  }
+
+  /**
+   * Cache the source file content in the source factory but don't add the source to the analysis
+   * context. The file path should be absolute.
+   *
+   * @param filePath the path of the file being cached
+   * @param contents the contents to be returned by the content provider for the specified file
+   * @return the source object representing the cached file
+   */
+  Source cacheSource(String filePath, String contents) {
+    Source source = new FileBasedSource(FileUtilities2.createFile(filePath));
+    analysisContext2.setContents(source, contents);
+    return source;
+  }
+
+  /**
+   * Computes errors for the given [librarySource].
+   * This assumes that the given [librarySource] and its parts have already
+   * been added to the content provider using the method [addNamedSource].
+   */
+  void computeLibrarySourceErrors(Source librarySource) {
+    analysisContext.computeErrors(librarySource);
+  }
+
+  /**
+   * Create a library element that represents a library named `"test"` containing a single
+   * empty compilation unit.
+   *
+   * @return the library element that was created
+   */
+  LibraryElementImpl createDefaultTestLibrary() =>
+      createTestLibrary(AnalysisContextFactory.contextWithCore(), "test");
+
+  /**
+   * Create a library element that represents a library with the given name containing a single
+   * empty compilation unit.
+   *
+   * @param libraryName the name of the library to be created
+   * @return the library element that was created
+   */
+  LibraryElementImpl createTestLibrary(
+      AnalysisContext context, String libraryName,
+      [List<String> typeNames]) {
+    String fileName = "$libraryName.dart";
+    FileBasedSource definingCompilationUnitSource =
+        _createNamedSource(fileName);
+    List<CompilationUnitElement> sourcedCompilationUnits;
+    if (typeNames == null) {
+      sourcedCompilationUnits = CompilationUnitElement.EMPTY_LIST;
+    } else {
+      int count = typeNames.length;
+      sourcedCompilationUnits = new List<CompilationUnitElement>(count);
+      for (int i = 0; i < count; i++) {
+        String typeName = typeNames[i];
+        ClassElementImpl type =
+            new ClassElementImpl.forNode(AstFactory.identifier3(typeName));
+        String fileName = "$typeName.dart";
+        CompilationUnitElementImpl compilationUnit =
+            new CompilationUnitElementImpl(fileName);
+        compilationUnit.source = _createNamedSource(fileName);
+        compilationUnit.librarySource = definingCompilationUnitSource;
+        compilationUnit.types = <ClassElement>[type];
+        sourcedCompilationUnits[i] = compilationUnit;
+      }
+    }
+    CompilationUnitElementImpl compilationUnit =
+        new CompilationUnitElementImpl(fileName);
+    compilationUnit.librarySource =
+        compilationUnit.source = definingCompilationUnitSource;
+    LibraryElementImpl library = new LibraryElementImpl.forNode(
+        context, AstFactory.libraryIdentifier2([libraryName]));
+    library.definingCompilationUnit = compilationUnit;
+    library.parts = sourcedCompilationUnits;
+    return library;
+  }
+
+  Expression findTopLevelConstantExpression(
+          CompilationUnit compilationUnit, String name) =>
+      findTopLevelDeclaration(compilationUnit, name).initializer;
+
+  VariableDeclaration findTopLevelDeclaration(
+      CompilationUnit compilationUnit, String name) {
+    for (CompilationUnitMember member in compilationUnit.declarations) {
+      if (member is TopLevelVariableDeclaration) {
+        for (VariableDeclaration variable in member.variables.variables) {
+          if (variable.name.name == name) {
+            return variable;
+          }
+        }
+      }
+    }
+    return null;
+    // Not found
+  }
+
+  /**
+   * @param code the code that assigns the value to the variable "v", no matter how. We check that
+   *          "v" has expected static and propagated type.
+   */
+  void _assertPropagatedAssignedType(String code, DartType expectedStaticType,
+      DartType expectedPropagatedType) {
+    SimpleIdentifier identifier = _findMarkedIdentifier(code, "v = ");
+    expect(identifier.staticType, same(expectedStaticType));
+    expect(identifier.propagatedType, same(expectedPropagatedType));
+  }
+
+  /**
+   * Check the static and propagated types of the expression marked with "; // marker" comment.
+   *
+   * @param code source code to analyze, with the expression to check marked with "// marker".
+   * @param expectedStaticType if non-null, check actual static type is equal to this.
+   * @param expectedPropagatedType if non-null, check actual static type is equal to this.
+   * @throws Exception
+   */
+  void _assertTypeOfMarkedExpression(String code, DartType expectedStaticType,
+      DartType expectedPropagatedType) {
+    SimpleIdentifier identifier = _findMarkedIdentifier(code, "; // marker");
+    if (expectedStaticType != null) {
+      expect(identifier.staticType, expectedStaticType);
+    }
+    expect(identifier.propagatedType, expectedPropagatedType);
+  }
+
+  /**
+   * Return the `SimpleIdentifier` marked by `marker`. The source code must have no
+   * errors and be verifiable.
+   *
+   * @param code source code to analyze.
+   * @param marker marker identifying sought after expression in source code.
+   * @return expression marked by the marker.
+   * @throws Exception
+   */
+  SimpleIdentifier _findMarkedIdentifier(String code, String marker) {
+    try {
+      Source source = addSource(code);
+      LibraryElement library = resolve2(source);
+      assertNoErrors(source);
+      verify([source]);
+      CompilationUnit unit = resolveCompilationUnit(source, library);
+      // Could generalize this further by making [SimpleIdentifier.class] a
+      // parameter.
+      return EngineTestCase.findNode(
+          unit, code, marker, (node) => node is SimpleIdentifier);
+    } catch (exception) {
+      // Is there a better exception to throw here? The point is that an
+      // assertion failure here should be a failure, in both "test_*" and
+      // "fail_*" tests. However, an assertion failure is success for the
+      // purpose of "fail_*" tests, so without catching them here "fail_*" tests
+      // can succeed by failing for the wrong reason.
+      throw new JavaException("Unexexpected assertion failure: $exception");
+    }
+  }
+
+  /**
+   * In the rare cases we want to group several tests into single "test_" method, so need a way to
+   * reset test instance to reuse it.
+   */
+  void reset() {
+    analysisContext2 = AnalysisContextFactory.contextWithCore();
+  }
+
+  /**
+   * Reset the analysis context to have the given options applied.
+   *
+   * @param options the analysis options to be applied to the context
+   */
+  void resetWithOptions(AnalysisOptions options) {
+    analysisContext2 =
+        AnalysisContextFactory.contextWithCoreAndOptions(options);
+  }
+
+  /**
+   * Given a library and all of its parts, resolve the contents of the library and the contents of
+   * the parts. This assumes that the sources for the library and its parts have already been added
+   * to the content provider using the method [addNamedSource].
+   *
+   * @param librarySource the source for the compilation unit that defines the library
+   * @return the element representing the resolved library
+   * @throws AnalysisException if the analysis could not be performed
+   */
+  LibraryElement resolve2(Source librarySource) =>
+      analysisContext2.computeLibraryElement(librarySource);
+
+  /**
+   * Return the resolved compilation unit corresponding to the given source in the given library.
+   *
+   * @param source the source of the compilation unit to be returned
+   * @param library the library in which the compilation unit is to be resolved
+   * @return the resolved compilation unit
+   * @throws Exception if the compilation unit could not be resolved
+   */
+  CompilationUnit resolveCompilationUnit(
+          Source source, LibraryElement library) =>
+      analysisContext2.resolveCompilationUnit(source, library);
+
+  CompilationUnit resolveSource(String sourceText) =>
+      resolveSource2("/test.dart", sourceText);
+
+  CompilationUnit resolveSource2(String fileName, String sourceText) {
+    Source source = addNamedSource(fileName, sourceText);
+    LibraryElement library = analysisContext.computeLibraryElement(source);
+    return analysisContext.resolveCompilationUnit(source, library);
+  }
+
+  Source resolveSources(List<String> sourceTexts) {
+    for (int i = 0; i < sourceTexts.length; i++) {
+      CompilationUnit unit =
+          resolveSource2("/lib${i + 1}.dart", sourceTexts[i]);
+      // reference the source if this is the last source
+      if (i + 1 == sourceTexts.length) {
+        return unit.element.source;
+      }
+    }
+    return null;
+  }
+
+  void resolveWithAndWithoutExperimental(
+      List<String> strSources,
+      List<ErrorCode> codesWithoutExperimental,
+      List<ErrorCode> codesWithExperimental) {
+    // Setup analysis context as non-experimental
+    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
+//    options.enableDeferredLoading = false;
+    resetWithOptions(options);
+    // Analysis and assertions
+    Source source = resolveSources(strSources);
+    assertErrors(source, codesWithoutExperimental);
+    verify([source]);
+    // Setup analysis context as experimental
+    reset();
+    // Analysis and assertions
+    source = resolveSources(strSources);
+    assertErrors(source, codesWithExperimental);
+    verify([source]);
+  }
+
+  void resolveWithErrors(List<String> strSources, List<ErrorCode> codes) {
+    // Analysis and assertions
+    Source source = resolveSources(strSources);
+    assertErrors(source, codes);
+    verify([source]);
+  }
+
+  @override
+  void setUp() {
+    reset();
+  }
+
+  @override
+  void tearDown() {
+    analysisContext2 = null;
+    super.tearDown();
+  }
+
+  /**
+   * Verify that all of the identifiers in the compilation units associated with
+   * the given [sources] have been resolved.
+   */
+  void verify(List<Source> sources) {
+    ResolutionVerifier verifier = new ResolutionVerifier();
+    for (Source source in sources) {
+      List<Source> libraries = analysisContext2.getLibrariesContaining(source);
+      for (Source library in libraries) {
+        analysisContext2
+            .resolveCompilationUnit2(source, library)
+            .accept(verifier);
+      }
+    }
+    verifier.assertResolved();
+  }
+
+  /**
+   * Create a source object representing a file with the given [fileName] and
+   * give it an empty content. Return the source that was created.
+   */
+  FileBasedSource _createNamedSource(String fileName) {
+    FileBasedSource source =
+        new FileBasedSource(FileUtilities2.createFile(fileName));
+    analysisContext2.setContents(source, "");
+    return source;
+  }
+}
+
+class Scope_EnclosedScopeTest_test_define_duplicate extends Scope {
+  GatheringErrorListener listener;
+
+  Scope_EnclosedScopeTest_test_define_duplicate(this.listener) : super();
+
+  @override
+  AnalysisErrorListener get errorListener => listener;
+
+  @override
+  Element internalLookup(Identifier identifier, String name,
+          LibraryElement referencingLibrary) =>
+      null;
+}
+
+class Scope_EnclosedScopeTest_test_define_normal extends Scope {
+  GatheringErrorListener listener;
+
+  Scope_EnclosedScopeTest_test_define_normal(this.listener) : super();
+
+  @override
+  AnalysisErrorListener get errorListener => listener;
+
+  @override
+  Element internalLookup(Identifier identifier, String name,
+          LibraryElement referencingLibrary) =>
+      null;
+}
+
+@reflectiveTest
+class ScopeTest extends ResolverTestCase {
+  void test_define_duplicate() {
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    ScopeTest_TestScope scope = new ScopeTest_TestScope(errorListener);
+    VariableElement element1 =
+        ElementFactory.localVariableElement(AstFactory.identifier3("v1"));
+    VariableElement element2 =
+        ElementFactory.localVariableElement(AstFactory.identifier3("v1"));
+    scope.define(element1);
+    scope.define(element2);
+    errorListener.assertErrorsWithSeverities([ErrorSeverity.ERROR]);
+  }
+
+  void test_define_normal() {
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    ScopeTest_TestScope scope = new ScopeTest_TestScope(errorListener);
+    VariableElement element1 =
+        ElementFactory.localVariableElement(AstFactory.identifier3("v1"));
+    VariableElement element2 =
+        ElementFactory.localVariableElement(AstFactory.identifier3("v2"));
+    scope.define(element1);
+    scope.define(element2);
+    errorListener.assertNoErrors();
+  }
+
+  void test_getErrorListener() {
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    ScopeTest_TestScope scope = new ScopeTest_TestScope(errorListener);
+    expect(scope.errorListener, errorListener);
+  }
+
+  void test_isPrivateName_nonPrivate() {
+    expect(Scope.isPrivateName("Public"), isFalse);
+  }
+
+  void test_isPrivateName_private() {
+    expect(Scope.isPrivateName("_Private"), isTrue);
+  }
+}
+
+/**
+ * A non-abstract subclass that can be used for testing purposes.
+ */
+class ScopeTest_TestScope extends Scope {
+  /**
+   * The listener that is to be informed when an error is encountered.
+   */
+  final AnalysisErrorListener errorListener;
+
+  ScopeTest_TestScope(this.errorListener);
+
+  @override
+  Element internalLookup(Identifier identifier, String name,
+          LibraryElement referencingLibrary) =>
+      localLookup(name, referencingLibrary);
+}
+
+@reflectiveTest
+class SimpleResolverTest extends ResolverTestCase {
+  void fail_getter_and_setter_fromMixins_property_access() {
+    // TODO(paulberry): it appears that auxiliaryElements isn't properly set on
+    // a SimpleIdentifier that's inside a property access.  This bug should be
+    // fixed.
+    Source source = addSource('''
+class B {}
+class M1 {
+  get x => null;
+  set x(value) {}
+}
+class M2 {
+  get x => null;
+  set x(value) {}
+}
+class C extends B with M1, M2 {}
+void main() {
+  new C().x += 1;
+}
+''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    // Verify that both the getter and setter for "x" in "new C().x" refer to
+    // the accessors defined in M2.
+    FunctionDeclaration main =
+        library.definingCompilationUnit.functions[0].computeNode();
+    BlockFunctionBody body = main.functionExpression.body;
+    ExpressionStatement stmt = body.block.statements[0];
+    AssignmentExpression assignment = stmt.expression;
+    PropertyAccess propertyAccess = assignment.leftHandSide;
+    expect(
+        propertyAccess.propertyName.staticElement.enclosingElement.name, 'M2');
+    expect(
+        propertyAccess
+            .propertyName.auxiliaryElements.staticElement.enclosingElement.name,
+        'M2');
+  }
+
+  void fail_staticInvocation() {
+    Source source = addSource(r'''
+class A {
+  static int get g => (a,b) => 0;
+}
+class B {
+  f() {
+    A.g(1,0);
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_argumentResolution_required_matching() {
+    Source source = addSource(r'''
+class A {
+  void f() {
+    g(1, 2, 3);
+  }
+  void g(a, b, c) {}
+}''');
+    _validateArgumentResolution(source, [0, 1, 2]);
+  }
+
+  void test_argumentResolution_required_tooFew() {
+    Source source = addSource(r'''
+class A {
+  void f() {
+    g(1, 2);
+  }
+  void g(a, b, c) {}
+}''');
+    _validateArgumentResolution(source, [0, 1]);
+  }
+
+  void test_argumentResolution_required_tooMany() {
+    Source source = addSource(r'''
+class A {
+  void f() {
+    g(1, 2, 3);
+  }
+  void g(a, b) {}
+}''');
+    _validateArgumentResolution(source, [0, 1, -1]);
+  }
+
+  void test_argumentResolution_requiredAndNamed_extra() {
+    Source source = addSource(r'''
+class A {
+  void f() {
+    g(1, 2, c: 3, d: 4);
+  }
+  void g(a, b, {c}) {}
+}''');
+    _validateArgumentResolution(source, [0, 1, 2, -1]);
+  }
+
+  void test_argumentResolution_requiredAndNamed_matching() {
+    Source source = addSource(r'''
+class A {
+  void f() {
+    g(1, 2, c: 3);
+  }
+  void g(a, b, {c}) {}
+}''');
+    _validateArgumentResolution(source, [0, 1, 2]);
+  }
+
+  void test_argumentResolution_requiredAndNamed_missing() {
+    Source source = addSource(r'''
+class A {
+  void f() {
+    g(1, 2, d: 3);
+  }
+  void g(a, b, {c, d}) {}
+}''');
+    _validateArgumentResolution(source, [0, 1, 3]);
+  }
+
+  void test_argumentResolution_requiredAndPositional_fewer() {
+    Source source = addSource(r'''
+class A {
+  void f() {
+    g(1, 2, 3);
+  }
+  void g(a, b, [c, d]) {}
+}''');
+    _validateArgumentResolution(source, [0, 1, 2]);
+  }
+
+  void test_argumentResolution_requiredAndPositional_matching() {
+    Source source = addSource(r'''
+class A {
+  void f() {
+    g(1, 2, 3, 4);
+  }
+  void g(a, b, [c, d]) {}
+}''');
+    _validateArgumentResolution(source, [0, 1, 2, 3]);
+  }
+
+  void test_argumentResolution_requiredAndPositional_more() {
+    Source source = addSource(r'''
+class A {
+  void f() {
+    g(1, 2, 3, 4);
+  }
+  void g(a, b, [c]) {}
+}''');
+    _validateArgumentResolution(source, [0, 1, 2, -1]);
+  }
+
+  void test_argumentResolution_setter_propagated() {
+    Source source = addSource(r'''
+main() {
+  var a = new A();
+  a.sss = 0;
+}
+class A {
+  set sss(x) {}
+}''');
+    LibraryElement library = resolve2(source);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    // find "a.sss = 0"
+    AssignmentExpression assignment;
+    {
+      FunctionElement mainElement = unit.functions[0];
+      FunctionBody mainBody = mainElement.computeNode().functionExpression.body;
+      Statement statement = (mainBody as BlockFunctionBody).block.statements[1];
+      ExpressionStatement expressionStatement =
+          statement as ExpressionStatement;
+      assignment = expressionStatement.expression as AssignmentExpression;
+    }
+    // get parameter
+    Expression rhs = assignment.rightHandSide;
+    expect(rhs.staticParameterElement, isNull);
+    ParameterElement parameter = rhs.propagatedParameterElement;
+    expect(parameter, isNotNull);
+    expect(parameter.displayName, "x");
+    // validate
+    ClassElement classA = unit.types[0];
+    PropertyAccessorElement setter = classA.accessors[0];
+    expect(setter.parameters[0], same(parameter));
+  }
+
+  void test_argumentResolution_setter_propagated_propertyAccess() {
+    Source source = addSource(r'''
+main() {
+  var a = new A();
+  a.b.sss = 0;
+}
+class A {
+  B b = new B();
+}
+class B {
+  set sss(x) {}
+}''');
+    LibraryElement library = resolve2(source);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    // find "a.b.sss = 0"
+    AssignmentExpression assignment;
+    {
+      FunctionElement mainElement = unit.functions[0];
+      FunctionBody mainBody = mainElement.computeNode().functionExpression.body;
+      Statement statement = (mainBody as BlockFunctionBody).block.statements[1];
+      ExpressionStatement expressionStatement =
+          statement as ExpressionStatement;
+      assignment = expressionStatement.expression as AssignmentExpression;
+    }
+    // get parameter
+    Expression rhs = assignment.rightHandSide;
+    expect(rhs.staticParameterElement, isNull);
+    ParameterElement parameter = rhs.propagatedParameterElement;
+    expect(parameter, isNotNull);
+    expect(parameter.displayName, "x");
+    // validate
+    ClassElement classB = unit.types[1];
+    PropertyAccessorElement setter = classB.accessors[0];
+    expect(setter.parameters[0], same(parameter));
+  }
+
+  void test_argumentResolution_setter_static() {
+    Source source = addSource(r'''
+main() {
+  A a = new A();
+  a.sss = 0;
+}
+class A {
+  set sss(x) {}
+}''');
+    LibraryElement library = resolve2(source);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    // find "a.sss = 0"
+    AssignmentExpression assignment;
+    {
+      FunctionElement mainElement = unit.functions[0];
+      FunctionBody mainBody = mainElement.computeNode().functionExpression.body;
+      Statement statement = (mainBody as BlockFunctionBody).block.statements[1];
+      ExpressionStatement expressionStatement =
+          statement as ExpressionStatement;
+      assignment = expressionStatement.expression as AssignmentExpression;
+    }
+    // get parameter
+    Expression rhs = assignment.rightHandSide;
+    ParameterElement parameter = rhs.staticParameterElement;
+    expect(parameter, isNotNull);
+    expect(parameter.displayName, "x");
+    // validate
+    ClassElement classA = unit.types[0];
+    PropertyAccessorElement setter = classA.accessors[0];
+    expect(setter.parameters[0], same(parameter));
+  }
+
+  void test_argumentResolution_setter_static_propertyAccess() {
+    Source source = addSource(r'''
+main() {
+  A a = new A();
+  a.b.sss = 0;
+}
+class A {
+  B b = new B();
+}
+class B {
+  set sss(x) {}
+}''');
+    LibraryElement library = resolve2(source);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    // find "a.b.sss = 0"
+    AssignmentExpression assignment;
+    {
+      FunctionElement mainElement = unit.functions[0];
+      FunctionBody mainBody = mainElement.computeNode().functionExpression.body;
+      Statement statement = (mainBody as BlockFunctionBody).block.statements[1];
+      ExpressionStatement expressionStatement =
+          statement as ExpressionStatement;
+      assignment = expressionStatement.expression as AssignmentExpression;
+    }
+    // get parameter
+    Expression rhs = assignment.rightHandSide;
+    ParameterElement parameter = rhs.staticParameterElement;
+    expect(parameter, isNotNull);
+    expect(parameter.displayName, "x");
+    // validate
+    ClassElement classB = unit.types[1];
+    PropertyAccessorElement setter = classB.accessors[0];
+    expect(setter.parameters[0], same(parameter));
+  }
+
+  void test_breakTarget_labeled() {
+    // Verify that the target of the label is correctly found and is recorded
+    // as the unlabeled portion of the statement.
+    String text = r'''
+void f() {
+  loop1: while (true) {
+    loop2: for (int i = 0; i < 10; i++) {
+      break loop1;
+      break loop2;
+    }
+  }
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    WhileStatement whileStatement = EngineTestCase.findNode(
+        unit, text, 'while (true)', (n) => n is WhileStatement);
+    ForStatement forStatement =
+        EngineTestCase.findNode(unit, text, 'for', (n) => n is ForStatement);
+    BreakStatement break1 = EngineTestCase.findNode(
+        unit, text, 'break loop1', (n) => n is BreakStatement);
+    BreakStatement break2 = EngineTestCase.findNode(
+        unit, text, 'break loop2', (n) => n is BreakStatement);
+    expect(break1.target, same(whileStatement));
+    expect(break2.target, same(forStatement));
+  }
+
+  void test_breakTarget_unlabeledBreakFromDo() {
+    String text = r'''
+void f() {
+  do {
+    break;
+  } while (true);
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    DoStatement doStatement =
+        EngineTestCase.findNode(unit, text, 'do', (n) => n is DoStatement);
+    BreakStatement breakStatement = EngineTestCase.findNode(
+        unit, text, 'break', (n) => n is BreakStatement);
+    expect(breakStatement.target, same(doStatement));
+  }
+
+  void test_breakTarget_unlabeledBreakFromFor() {
+    String text = r'''
+void f() {
+  for (int i = 0; i < 10; i++) {
+    break;
+  }
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    ForStatement forStatement =
+        EngineTestCase.findNode(unit, text, 'for', (n) => n is ForStatement);
+    BreakStatement breakStatement = EngineTestCase.findNode(
+        unit, text, 'break', (n) => n is BreakStatement);
+    expect(breakStatement.target, same(forStatement));
+  }
+
+  void test_breakTarget_unlabeledBreakFromForEach() {
+    String text = r'''
+void f() {
+  for (x in []) {
+    break;
+  }
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    ForEachStatement forStatement = EngineTestCase.findNode(
+        unit, text, 'for', (n) => n is ForEachStatement);
+    BreakStatement breakStatement = EngineTestCase.findNode(
+        unit, text, 'break', (n) => n is BreakStatement);
+    expect(breakStatement.target, same(forStatement));
+  }
+
+  void test_breakTarget_unlabeledBreakFromSwitch() {
+    String text = r'''
+void f() {
+  while (true) {
+    switch (0) {
+      case 0:
+        break;
+    }
+  }
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    SwitchStatement switchStatement = EngineTestCase.findNode(
+        unit, text, 'switch', (n) => n is SwitchStatement);
+    BreakStatement breakStatement = EngineTestCase.findNode(
+        unit, text, 'break', (n) => n is BreakStatement);
+    expect(breakStatement.target, same(switchStatement));
+  }
+
+  void test_breakTarget_unlabeledBreakFromWhile() {
+    String text = r'''
+void f() {
+  while (true) {
+    break;
+  }
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    WhileStatement whileStatement = EngineTestCase.findNode(
+        unit, text, 'while', (n) => n is WhileStatement);
+    BreakStatement breakStatement = EngineTestCase.findNode(
+        unit, text, 'break', (n) => n is BreakStatement);
+    expect(breakStatement.target, same(whileStatement));
+  }
+
+  void test_breakTarget_unlabeledBreakToOuterFunction() {
+    // Verify that unlabeled break statements can't resolve to loops in an
+    // outer function.
+    String text = r'''
+void f() {
+  while (true) {
+    void g() {
+      break;
+    }
+  }
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    BreakStatement breakStatement = EngineTestCase.findNode(
+        unit, text, 'break', (n) => n is BreakStatement);
+    expect(breakStatement.target, isNull);
+  }
+
+  void test_class_definesCall() {
+    Source source = addSource(r'''
+class A {
+  int call(int x) { return x; }
+}
+int f(A a) {
+  return a(0);
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_class_extends_implements() {
+    Source source = addSource(r'''
+class A extends B implements C {}
+class B {}
+class C {}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_commentReference_class() {
+    Source source = addSource(r'''
+f() {}
+/** [A] [new A] [A.n] [new A.n] [m] [f] */
+class A {
+  A() {}
+  A.n() {}
+  m() {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_commentReference_parameter() {
+    Source source = addSource(r'''
+class A {
+  A() {}
+  A.n() {}
+  /** [e] [f] */
+  m(e, f()) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_commentReference_singleLine() {
+    Source source = addSource(r'''
+/// [A]
+class A {}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_continueTarget_labeled() {
+    // Verify that the target of the label is correctly found and is recorded
+    // as the unlabeled portion of the statement.
+    String text = r'''
+void f() {
+  loop1: while (true) {
+    loop2: for (int i = 0; i < 10; i++) {
+      continue loop1;
+      continue loop2;
+    }
+  }
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    WhileStatement whileStatement = EngineTestCase.findNode(
+        unit, text, 'while (true)', (n) => n is WhileStatement);
+    ForStatement forStatement =
+        EngineTestCase.findNode(unit, text, 'for', (n) => n is ForStatement);
+    ContinueStatement continue1 = EngineTestCase.findNode(
+        unit, text, 'continue loop1', (n) => n is ContinueStatement);
+    ContinueStatement continue2 = EngineTestCase.findNode(
+        unit, text, 'continue loop2', (n) => n is ContinueStatement);
+    expect(continue1.target, same(whileStatement));
+    expect(continue2.target, same(forStatement));
+  }
+
+  void test_continueTarget_unlabeledContinueFromDo() {
+    String text = r'''
+void f() {
+  do {
+    continue;
+  } while (true);
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    DoStatement doStatement =
+        EngineTestCase.findNode(unit, text, 'do', (n) => n is DoStatement);
+    ContinueStatement continueStatement = EngineTestCase.findNode(
+        unit, text, 'continue', (n) => n is ContinueStatement);
+    expect(continueStatement.target, same(doStatement));
+  }
+
+  void test_continueTarget_unlabeledContinueFromFor() {
+    String text = r'''
+void f() {
+  for (int i = 0; i < 10; i++) {
+    continue;
+  }
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    ForStatement forStatement =
+        EngineTestCase.findNode(unit, text, 'for', (n) => n is ForStatement);
+    ContinueStatement continueStatement = EngineTestCase.findNode(
+        unit, text, 'continue', (n) => n is ContinueStatement);
+    expect(continueStatement.target, same(forStatement));
+  }
+
+  void test_continueTarget_unlabeledContinueFromForEach() {
+    String text = r'''
+void f() {
+  for (x in []) {
+    continue;
+  }
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    ForEachStatement forStatement = EngineTestCase.findNode(
+        unit, text, 'for', (n) => n is ForEachStatement);
+    ContinueStatement continueStatement = EngineTestCase.findNode(
+        unit, text, 'continue', (n) => n is ContinueStatement);
+    expect(continueStatement.target, same(forStatement));
+  }
+
+  void test_continueTarget_unlabeledContinueFromWhile() {
+    String text = r'''
+void f() {
+  while (true) {
+    continue;
+  }
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    WhileStatement whileStatement = EngineTestCase.findNode(
+        unit, text, 'while', (n) => n is WhileStatement);
+    ContinueStatement continueStatement = EngineTestCase.findNode(
+        unit, text, 'continue', (n) => n is ContinueStatement);
+    expect(continueStatement.target, same(whileStatement));
+  }
+
+  void test_continueTarget_unlabeledContinueSkipsSwitch() {
+    String text = r'''
+void f() {
+  while (true) {
+    switch (0) {
+      case 0:
+        continue;
+    }
+  }
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    WhileStatement whileStatement = EngineTestCase.findNode(
+        unit, text, 'while', (n) => n is WhileStatement);
+    ContinueStatement continueStatement = EngineTestCase.findNode(
+        unit, text, 'continue', (n) => n is ContinueStatement);
+    expect(continueStatement.target, same(whileStatement));
+  }
+
+  void test_continueTarget_unlabeledContinueToOuterFunction() {
+    // Verify that unlabeled continue statements can't resolve to loops in an
+    // outer function.
+    String text = r'''
+void f() {
+  while (true) {
+    void g() {
+      continue;
+    }
+  }
+}
+''';
+    CompilationUnit unit = resolveSource(text);
+    ContinueStatement continueStatement = EngineTestCase.findNode(
+        unit, text, 'continue', (n) => n is ContinueStatement);
+    expect(continueStatement.target, isNull);
+  }
+
+  void test_empty() {
+    Source source = addSource("");
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_entryPoint_exported() {
+    addNamedSource(
+        "/two.dart",
+        r'''
+library two;
+main() {}''');
+    Source source = addNamedSource(
+        "/one.dart",
+        r'''
+library one;
+export 'two.dart';''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    FunctionElement main = library.entryPoint;
+    expect(main, isNotNull);
+    expect(main.library, isNot(same(library)));
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_entryPoint_local() {
+    Source source = addNamedSource(
+        "/one.dart",
+        r'''
+library one;
+main() {}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    FunctionElement main = library.entryPoint;
+    expect(main, isNotNull);
+    expect(main.library, same(library));
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_entryPoint_none() {
+    Source source = addNamedSource("/one.dart", "library one;");
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    expect(library.entryPoint, isNull);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_enum_externalLibrary() {
+    addNamedSource(
+        "/my_lib.dart",
+        r'''
+library my_lib;
+enum EEE {A, B, C}''');
+    Source source = addSource(r'''
+import 'my_lib.dart';
+main() {
+  EEE e = null;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_extractedMethodAsConstant() {
+    Source source = addSource(r'''
+abstract class Comparable<T> {
+  int compareTo(T other);
+  static int compare(Comparable a, Comparable b) => a.compareTo(b);
+}
+class A {
+  void sort([compare = Comparable.compare]) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_fieldFormalParameter() {
+    Source source = addSource(r'''
+class A {
+  int x;
+  A(this.x) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_forEachLoops_nonConflicting() {
+    Source source = addSource(r'''
+f() {
+  List list = [1,2,3];
+  for (int x in list) {}
+  for (int x in list) {}
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_forLoops_nonConflicting() {
+    Source source = addSource(r'''
+f() {
+  for (int i = 0; i < 3; i++) {
+  }
+  for (int i = 0; i < 3; i++) {
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_functionTypeAlias() {
+    Source source = addSource(r'''
+typedef bool P(e);
+class A {
+  P p;
+  m(e) {
+    if (p(e)) {}
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_getter_and_setter_fromMixins_bare_identifier() {
+    Source source = addSource('''
+class B {}
+class M1 {
+  get x => null;
+  set x(value) {}
+}
+class M2 {
+  get x => null;
+  set x(value) {}
+}
+class C extends B with M1, M2 {
+  void f() {
+    x += 1;
+  }
+}
+''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    // Verify that both the getter and setter for "x" in C.f() refer to the
+    // accessors defined in M2.
+    ClassElement classC = library.definingCompilationUnit.types[3];
+    MethodDeclaration f = classC.getMethod('f').computeNode();
+    BlockFunctionBody body = f.body;
+    ExpressionStatement stmt = body.block.statements[0];
+    AssignmentExpression assignment = stmt.expression;
+    SimpleIdentifier leftHandSide = assignment.leftHandSide;
+    expect(leftHandSide.staticElement.enclosingElement.name, 'M2');
+    expect(leftHandSide.auxiliaryElements.staticElement.enclosingElement.name,
+        'M2');
+  }
+
+  void test_getter_fromMixins_bare_identifier() {
+    Source source = addSource('''
+class B {}
+class M1 {
+  get x => null;
+}
+class M2 {
+  get x => null;
+}
+class C extends B with M1, M2 {
+  f() {
+    return x;
+  }
+}
+''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    // Verify that the getter for "x" in C.f() refers to the getter defined in
+    // M2.
+    ClassElement classC = library.definingCompilationUnit.types[3];
+    MethodDeclaration f = classC.getMethod('f').computeNode();
+    BlockFunctionBody body = f.body;
+    ReturnStatement stmt = body.block.statements[0];
+    SimpleIdentifier x = stmt.expression;
+    expect(x.staticElement.enclosingElement.name, 'M2');
+  }
+
+  void test_getter_fromMixins_property_access() {
+    Source source = addSource('''
+class B {}
+class M1 {
+  get x => null;
+}
+class M2 {
+  get x => null;
+}
+class C extends B with M1, M2 {}
+void main() {
+  var y = new C().x;
+}
+''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    // Verify that the getter for "x" in "new C().x" refers to the getter
+    // defined in M2.
+    FunctionDeclaration main =
+        library.definingCompilationUnit.functions[0].computeNode();
+    BlockFunctionBody body = main.functionExpression.body;
+    VariableDeclarationStatement stmt = body.block.statements[0];
+    PropertyAccess propertyAccess = stmt.variables.variables[0].initializer;
+    expect(
+        propertyAccess.propertyName.staticElement.enclosingElement.name, 'M2');
+  }
+
+  void test_getterAndSetterWithDifferentTypes() {
+    Source source = addSource(r'''
+class A {
+  int get f => 0;
+  void set f(String s) {}
+}
+g (A a) {
+  a.f = a.f.toString();
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(
+        source, [StaticWarningCode.MISMATCHED_GETTER_AND_SETTER_TYPES]);
+    verify([source]);
+  }
+
+  void test_hasReferenceToSuper() {
+    Source source = addSource(r'''
+class A {}
+class B {toString() => super.toString();}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    List<ClassElement> classes = unit.types;
+    expect(classes, hasLength(2));
+    expect(classes[0].hasReferenceToSuper, isFalse);
+    expect(classes[1].hasReferenceToSuper, isTrue);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_import_hide() {
+    addNamedSource(
+        "/lib1.dart",
+        r'''
+library lib1;
+set foo(value) {}
+class A {}''');
+    addNamedSource(
+        "/lib2.dart",
+        r'''
+library lib2;
+set foo(value) {}''');
+    Source source = addNamedSource(
+        "/lib3.dart",
+        r'''
+import 'lib1.dart' hide foo;
+import 'lib2.dart';
+
+main() {
+  foo = 0;
+}
+A a;''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_import_prefix() {
+    addNamedSource(
+        "/two.dart",
+        r'''
+library two;
+f(int x) {
+  return x * x;
+}''');
+    Source source = addNamedSource(
+        "/one.dart",
+        r'''
+library one;
+import 'two.dart' as _two;
+main() {
+  _two.f(0);
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_import_spaceInUri() {
+    addNamedSource(
+        "/sub folder/lib.dart",
+        r'''
+library lib;
+foo() {}''');
+    Source source = addNamedSource(
+        "/app.dart",
+        r'''
+import 'sub folder/lib.dart';
+
+main() {
+  foo();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_indexExpression_typeParameters() {
+    Source source = addSource(r'''
+f() {
+  List<int> a;
+  a[0];
+  List<List<int>> b;
+  b[0][0];
+  List<List<List<int>>> c;
+  c[0][0][0];
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_indexExpression_typeParameters_invalidAssignmentWarning() {
+    Source source = addSource(r'''
+f() {
+  List<List<int>> b;
+  b[0][0] = 'hi';
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
+    verify([source]);
+  }
+
+  void test_indirectOperatorThroughCall() {
+    Source source = addSource(r'''
+class A {
+  B call() { return new B(); }
+}
+
+class B {
+  int operator [](int i) { return i; }
+}
+
+A f = new A();
+
+g(int x) {}
+
+main() {
+  g(f()[0]);
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_invoke_dynamicThroughGetter() {
+    Source source = addSource(r'''
+class A {
+  List get X => [() => 0];
+  m(A a) {
+    X.last;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_isValidMixin_badSuperclass() {
+    Source source = addSource(r'''
+class A extends B {}
+class B {}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    List<ClassElement> classes = unit.types;
+    expect(classes, hasLength(2));
+    expect(classes[0].isValidMixin, isFalse);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_isValidMixin_constructor() {
+    Source source = addSource(r'''
+class A {
+  A() {}
+}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    List<ClassElement> classes = unit.types;
+    expect(classes, hasLength(1));
+    expect(classes[0].isValidMixin, isFalse);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_isValidMixin_super() {
+    Source source = addSource(r'''
+class A {
+  toString() {
+    return super.toString();
+  }
+}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    List<ClassElement> classes = unit.types;
+    expect(classes, hasLength(1));
+    expect(classes[0].isValidMixin, isFalse);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_isValidMixin_valid() {
+    Source source = addSource("class A {}");
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    List<ClassElement> classes = unit.types;
+    expect(classes, hasLength(1));
+    expect(classes[0].isValidMixin, isTrue);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_labels_switch() {
+    Source source = addSource(r'''
+void doSwitch(int target) {
+  switch (target) {
+    l0: case 0:
+      continue l1;
+    l1: case 1:
+      continue l0;
+    default:
+      continue l1;
+  }
+}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_localVariable_types_invoked() {
+    Source source = addSource(r'''
+const A = null;
+main() {
+  var myVar = (int p) => 'foo';
+  myVar(42);
+}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnit unit =
+        analysisContext.resolveCompilationUnit(source, library);
+    expect(unit, isNotNull);
+    List<bool> found = [false];
+    List<CaughtException> thrownException = new List<CaughtException>(1);
+    unit.accept(new _SimpleResolverTest_localVariable_types_invoked(
+        this, found, thrownException));
+    if (thrownException[0] != null) {
+      throw new AnalysisException(
+          "Exception", new CaughtException(thrownException[0], null));
+    }
+    expect(found[0], isTrue);
+  }
+
+  void test_metadata_class() {
+    Source source = addSource(r'''
+const A = null;
+@A class C<A> {}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unitElement = library.definingCompilationUnit;
+    expect(unitElement, isNotNull);
+    List<ClassElement> classes = unitElement.types;
+    expect(classes, hasLength(1));
+    List<ElementAnnotation> annotations = classes[0].metadata;
+    expect(annotations, hasLength(1));
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    NodeList<CompilationUnitMember> declarations = unit.declarations;
+    expect(declarations, hasLength(2));
+    Element expectedElement = (declarations[0] as TopLevelVariableDeclaration)
+        .variables
+        .variables[0].name.staticElement;
+    EngineTestCase.assertInstanceOf((obj) => obj is PropertyInducingElement,
+        PropertyInducingElement, expectedElement);
+    expectedElement = (expectedElement as PropertyInducingElement).getter;
+    Element actualElement =
+        (declarations[1] as ClassDeclaration).metadata[0].name.staticElement;
+    expect(actualElement, same(expectedElement));
+  }
+
+  void test_metadata_field() {
+    Source source = addSource(r'''
+const A = null;
+class C {
+  @A int f;
+}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    List<ClassElement> classes = unit.types;
+    expect(classes, hasLength(1));
+    FieldElement field = classes[0].fields[0];
+    List<ElementAnnotation> annotations = field.metadata;
+    expect(annotations, hasLength(1));
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_metadata_fieldFormalParameter() {
+    Source source = addSource(r'''
+const A = null;
+class C {
+  int f;
+  C(@A this.f);
+}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    List<ClassElement> classes = unit.types;
+    expect(classes, hasLength(1));
+    List<ConstructorElement> constructors = classes[0].constructors;
+    expect(constructors, hasLength(1));
+    List<ParameterElement> parameters = constructors[0].parameters;
+    expect(parameters, hasLength(1));
+    List<ElementAnnotation> annotations = parameters[0].metadata;
+    expect(annotations, hasLength(1));
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_metadata_function() {
+    Source source = addSource(r'''
+const A = null;
+@A f() {}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    List<FunctionElement> functions = unit.functions;
+    expect(functions, hasLength(1));
+    List<ElementAnnotation> annotations = functions[0].metadata;
+    expect(annotations, hasLength(1));
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_metadata_functionTypedParameter() {
+    Source source = addSource(r'''
+const A = null;
+f(@A int p(int x)) {}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    List<FunctionElement> functions = unit.functions;
+    expect(functions, hasLength(1));
+    List<ParameterElement> parameters = functions[0].parameters;
+    expect(parameters, hasLength(1));
+    List<ElementAnnotation> annotations1 = parameters[0].metadata;
+    expect(annotations1, hasLength(1));
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_metadata_libraryDirective() {
+    Source source = addSource(r'''
+@A library lib;
+const A = null;''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    List<ElementAnnotation> annotations = library.metadata;
+    expect(annotations, hasLength(1));
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_metadata_method() {
+    Source source = addSource(r'''
+const A = null;
+class C {
+  @A void m() {}
+}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    List<ClassElement> classes = unit.types;
+    expect(classes, hasLength(1));
+    MethodElement method = classes[0].methods[0];
+    List<ElementAnnotation> annotations = method.metadata;
+    expect(annotations, hasLength(1));
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_metadata_namedParameter() {
+    Source source = addSource(r'''
+const A = null;
+f({@A int p : 0}) {}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    List<FunctionElement> functions = unit.functions;
+    expect(functions, hasLength(1));
+    List<ParameterElement> parameters = functions[0].parameters;
+    expect(parameters, hasLength(1));
+    List<ElementAnnotation> annotations1 = parameters[0].metadata;
+    expect(annotations1, hasLength(1));
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_metadata_positionalParameter() {
+    Source source = addSource(r'''
+const A = null;
+f([@A int p = 0]) {}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    List<FunctionElement> functions = unit.functions;
+    expect(functions, hasLength(1));
+    List<ParameterElement> parameters = functions[0].parameters;
+    expect(parameters, hasLength(1));
+    List<ElementAnnotation> annotations1 = parameters[0].metadata;
+    expect(annotations1, hasLength(1));
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_metadata_simpleParameter() {
+    Source source = addSource(r'''
+const A = null;
+f(@A p1, @A int p2) {}''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unit = library.definingCompilationUnit;
+    expect(unit, isNotNull);
+    List<FunctionElement> functions = unit.functions;
+    expect(functions, hasLength(1));
+    List<ParameterElement> parameters = functions[0].parameters;
+    expect(parameters, hasLength(2));
+    List<ElementAnnotation> annotations1 = parameters[0].metadata;
+    expect(annotations1, hasLength(1));
+    List<ElementAnnotation> annotations2 = parameters[1].metadata;
+    expect(annotations2, hasLength(1));
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_metadata_typedef() {
+    Source source = addSource(r'''
+const A = null;
+@A typedef F<A>();''');
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    CompilationUnitElement unitElement = library.definingCompilationUnit;
+    expect(unitElement, isNotNull);
+    List<FunctionTypeAliasElement> aliases = unitElement.functionTypeAliases;
+    expect(aliases, hasLength(1));
+    List<ElementAnnotation> annotations = aliases[0].metadata;
+    expect(annotations, hasLength(1));
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    NodeList<CompilationUnitMember> declarations = unit.declarations;
+    expect(declarations, hasLength(2));
+    Element expectedElement = (declarations[0] as TopLevelVariableDeclaration)
+        .variables
+        .variables[0].name.staticElement;
+    EngineTestCase.assertInstanceOf((obj) => obj is PropertyInducingElement,
+        PropertyInducingElement, expectedElement);
+    expectedElement = (expectedElement as PropertyInducingElement).getter;
+    Element actualElement =
+        (declarations[1] as FunctionTypeAlias).metadata[0].name.staticElement;
+    expect(actualElement, same(expectedElement));
+  }
+
+  void test_method_fromMixin() {
+    Source source = addSource(r'''
+class B {
+  bar() => 1;
+}
+class A {
+  foo() => 2;
+}
+
+class C extends B with A {
+  bar() => super.bar();
+  foo() => super.foo();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_method_fromMixins() {
+    Source source = addSource('''
+class B {}
+class M1 {
+  void f() {}
+}
+class M2 {
+  void f() {}
+}
+class C extends B with M1, M2 {}
+void main() {
+  new C().f();
+}
+''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    // Verify that the "f" in "new C().f()" refers to the "f" defined in M2.
+    FunctionDeclaration main =
+        library.definingCompilationUnit.functions[0].computeNode();
+    BlockFunctionBody body = main.functionExpression.body;
+    ExpressionStatement stmt = body.block.statements[0];
+    MethodInvocation expr = stmt.expression;
+    expect(expr.methodName.staticElement.enclosingElement.name, 'M2');
+  }
+
+  void test_method_fromMixins_bare_identifier() {
+    Source source = addSource('''
+class B {}
+class M1 {
+  void f() {}
+}
+class M2 {
+  void f() {}
+}
+class C extends B with M1, M2 {
+  void g() {
+    f();
+  }
+}
+''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    // Verify that the call to f() in C.g() refers to the method defined in M2.
+    ClassElement classC = library.definingCompilationUnit.types[3];
+    MethodDeclaration g = classC.getMethod('g').computeNode();
+    BlockFunctionBody body = g.body;
+    ExpressionStatement stmt = body.block.statements[0];
+    MethodInvocation invocation = stmt.expression;
+    SimpleIdentifier methodName = invocation.methodName;
+    expect(methodName.staticElement.enclosingElement.name, 'M2');
+  }
+
+  void test_method_fromMixins_invked_from_outside_class() {
+    Source source = addSource('''
+class B {}
+class M1 {
+  void f() {}
+}
+class M2 {
+  void f() {}
+}
+class C extends B with M1, M2 {}
+void main() {
+  new C().f();
+}
+''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    // Verify that the call to f() in "new C().f()" refers to the method
+    // defined in M2.
+    FunctionDeclaration main =
+        library.definingCompilationUnit.functions[0].computeNode();
+    BlockFunctionBody body = main.functionExpression.body;
+    ExpressionStatement stmt = body.block.statements[0];
+    MethodInvocation invocation = stmt.expression;
+    expect(invocation.methodName.staticElement.enclosingElement.name, 'M2');
+  }
+
+  void test_method_fromSuperclassMixin() {
+    Source source = addSource(r'''
+class A {
+  void m1() {}
+}
+class B extends Object with A {
+}
+class C extends B {
+}
+f(C c) {
+  c.m1();
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_methodCascades() {
+    Source source = addSource(r'''
+class A {
+  void m1() {}
+  void m2() {}
+  void m() {
+    A a = new A();
+    a..m1()
+     ..m2();
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_methodCascades_withSetter() {
+    Source source = addSource(r'''
+class A {
+  String name;
+  void m1() {}
+  void m2() {}
+  void m() {
+    A a = new A();
+    a..m1()
+     ..name = 'name'
+     ..m2();
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    // failing with error code: INVOCATION_OF_NON_FUNCTION
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_resolveAgainstNull() {
+    Source source = addSource(r'''
+f(var p) {
+  return null == p;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_setter_fromMixins_bare_identifier() {
+    Source source = addSource('''
+class B {}
+class M1 {
+  set x(value) {}
+}
+class M2 {
+  set x(value) {}
+}
+class C extends B with M1, M2 {
+  void f() {
+    x = 1;
+  }
+}
+''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    // Verify that the setter for "x" in C.f() refers to the setter defined in
+    // M2.
+    ClassElement classC = library.definingCompilationUnit.types[3];
+    MethodDeclaration f = classC.getMethod('f').computeNode();
+    BlockFunctionBody body = f.body;
+    ExpressionStatement stmt = body.block.statements[0];
+    AssignmentExpression assignment = stmt.expression;
+    SimpleIdentifier leftHandSide = assignment.leftHandSide;
+    expect(leftHandSide.staticElement.enclosingElement.name, 'M2');
+  }
+
+  void test_setter_fromMixins_property_access() {
+    Source source = addSource('''
+class B {}
+class M1 {
+  set x(value) {}
+}
+class M2 {
+  set x(value) {}
+}
+class C extends B with M1, M2 {}
+void main() {
+  new C().x = 1;
+}
+''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    // Verify that the setter for "x" in "new C().x" refers to the setter
+    // defined in M2.
+    FunctionDeclaration main =
+        library.definingCompilationUnit.functions[0].computeNode();
+    BlockFunctionBody body = main.functionExpression.body;
+    ExpressionStatement stmt = body.block.statements[0];
+    AssignmentExpression assignment = stmt.expression;
+    PropertyAccess propertyAccess = assignment.leftHandSide;
+    expect(
+        propertyAccess.propertyName.staticElement.enclosingElement.name, 'M2');
+  }
+
+  void test_setter_inherited() {
+    Source source = addSource(r'''
+class A {
+  int get x => 0;
+  set x(int p) {}
+}
+class B extends A {
+  int get x => super.x == null ? 0 : super.x;
+  int f() => x = 1;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  void test_setter_static() {
+    Source source = addSource(r'''
+set s(x) {
+}
+
+main() {
+  s = 123;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
+  /**
+   * Resolve the given source and verify that the arguments in a specific method invocation were
+   * correctly resolved.
+   *
+   * The source is expected to be source for a compilation unit, the first declaration is expected
+   * to be a class, the first member of which is expected to be a method with a block body, and the
+   * first statement in the body is expected to be an expression statement whose expression is a
+   * method invocation. It is the arguments to that method invocation that are tested. The method
+   * invocation can contain errors.
+   *
+   * The arguments were resolved correctly if the number of expressions in the list matches the
+   * length of the array of indices and if, for each index in the array of indices, the parameter to
+   * which the argument expression was resolved is the parameter in the invoked method's list of
+   * parameters at that index. Arguments that should not be resolved to a parameter because of an
+   * error can be denoted by including a negative index in the array of indices.
+   *
+   * @param source the source to be resolved
+   * @param indices the array of indices used to associate arguments with parameters
+   * @throws Exception if the source could not be resolved or if the structure of the source is not
+   *           valid
+   */
+  void _validateArgumentResolution(Source source, List<int> indices) {
+    LibraryElement library = resolve2(source);
+    expect(library, isNotNull);
+    ClassElement classElement = library.definingCompilationUnit.types[0];
+    List<ParameterElement> parameters = classElement.methods[1].parameters;
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    expect(unit, isNotNull);
+    ClassDeclaration classDeclaration =
+        unit.declarations[0] as ClassDeclaration;
+    MethodDeclaration methodDeclaration =
+        classDeclaration.members[0] as MethodDeclaration;
+    Block block = (methodDeclaration.body as BlockFunctionBody).block;
+    ExpressionStatement statement = block.statements[0] as ExpressionStatement;
+    MethodInvocation invocation = statement.expression as MethodInvocation;
+    NodeList<Expression> arguments = invocation.argumentList.arguments;
+    int argumentCount = arguments.length;
+    expect(argumentCount, indices.length);
+    for (int i = 0; i < argumentCount; i++) {
+      Expression argument = arguments[i];
+      ParameterElement element = argument.staticParameterElement;
+      int index = indices[i];
+      if (index < 0) {
+        expect(element, isNull);
+      } else {
+        expect(element, same(parameters[index]));
+      }
+    }
+  }
+}
+
+class SourceContainer_ChangeSetTest_test_toString implements SourceContainer {
+  @override
+  bool contains(Source source) => false;
+}
+
+/**
+ * Like [StaticTypeAnalyzerTest], but as end-to-end tests.
+ */
+@reflectiveTest
+class StaticTypeAnalyzer2Test extends ResolverTestCase {
+  String testCode;
+  Source testSource;
+  CompilationUnit testUnit;
+
+  void test_FunctionExpressionInvocation_block() {
+    String code = r'''
+main() {
+  var foo = (() { return 1; })();
+}
+''';
+    _resolveTestUnit(code);
+    SimpleIdentifier identifier = _findIdentifier('foo');
+    VariableDeclaration declaration =
+        identifier.getAncestor((node) => node is VariableDeclaration);
+    expect(declaration.initializer.staticType.isDynamic, isTrue);
+    expect(declaration.initializer.propagatedType, isNull);
+  }
+
+  void test_FunctionExpressionInvocation_curried() {
+    String code = r'''
+typedef int F();
+F f() => null;
+main() {
+  var foo = f()();
+}
+''';
+    _resolveTestUnit(code);
+    SimpleIdentifier identifier = _findIdentifier('foo');
+    VariableDeclaration declaration =
+        identifier.getAncestor((node) => node is VariableDeclaration);
+    expect(declaration.initializer.staticType.name, 'int');
+    expect(declaration.initializer.propagatedType, isNull);
+  }
+
+  void test_FunctionExpressionInvocation_expression() {
+    String code = r'''
+main() {
+  var foo = (() => 1)();
+}
+''';
+    _resolveTestUnit(code);
+    SimpleIdentifier identifier = _findIdentifier('foo');
+    VariableDeclaration declaration =
+        identifier.getAncestor((node) => node is VariableDeclaration);
+    expect(declaration.initializer.staticType.name, 'int');
+    expect(declaration.initializer.propagatedType, isNull);
+  }
+
+  void test_MethodInvocation_nameType_localVariable() {
+    String code = r"""
+typedef Foo();
+main() {
+  Foo foo;
+  foo();
+}
+""";
+    _resolveTestUnit(code);
+    // "foo" should be resolved to the "Foo" type
+    SimpleIdentifier identifier = _findIdentifier("foo();");
+    DartType type = identifier.staticType;
+    expect(type, new isInstanceOf<FunctionType>());
+  }
+
+  void test_MethodInvocation_nameType_parameter_FunctionTypeAlias() {
+    String code = r"""
+typedef Foo();
+main(Foo foo) {
+  foo();
+}
+""";
+    _resolveTestUnit(code);
+    // "foo" should be resolved to the "Foo" type
+    SimpleIdentifier identifier = _findIdentifier("foo();");
+    DartType type = identifier.staticType;
+    expect(type, new isInstanceOf<FunctionType>());
+  }
+
+  void test_MethodInvocation_nameType_parameter_propagatedType() {
+    String code = r"""
+typedef Foo();
+main(p) {
+  if (p is Foo) {
+    p();
+  }
+}
+""";
+    _resolveTestUnit(code);
+    SimpleIdentifier identifier = _findIdentifier("p()");
+    expect(identifier.staticType, DynamicTypeImpl.instance);
+    {
+      FunctionType type = identifier.propagatedType;
+      expect(type, isNotNull);
+      expect(type.name, 'Foo');
+    }
+  }
+
+  SimpleIdentifier _findIdentifier(String search) {
+    SimpleIdentifier identifier = EngineTestCase.findNode(
+        testUnit, testCode, search, (node) => node is SimpleIdentifier);
+    return identifier;
+  }
+
+  void _resolveTestUnit(String code) {
+    testCode = code;
+    testSource = addSource(testCode);
+    LibraryElement library = resolve2(testSource);
+    assertNoErrors(testSource);
+    verify([testSource]);
+    testUnit = resolveCompilationUnit(testSource, library);
+  }
+}
+
+@reflectiveTest
+class StaticTypeAnalyzerTest extends EngineTestCase {
+  /**
+   * The error listener to which errors will be reported.
+   */
+  GatheringErrorListener _listener;
+
+  /**
+   * The resolver visitor used to create the analyzer.
+   */
+  ResolverVisitor _visitor;
+
+  /**
+   * The analyzer being used to analyze the test cases.
+   */
+  StaticTypeAnalyzer _analyzer;
+
+  /**
+   * The type provider used to access the types.
+   */
+  TestTypeProvider _typeProvider;
+
+  void fail_visitFunctionExpressionInvocation() {
+    fail("Not yet tested");
+    _listener.assertNoErrors();
+  }
+
+  void fail_visitMethodInvocation() {
+    fail("Not yet tested");
+    _listener.assertNoErrors();
+  }
+
+  void fail_visitSimpleIdentifier() {
+    fail("Not yet tested");
+    _listener.assertNoErrors();
+  }
+
+  @override
+  void setUp() {
+    _listener = new GatheringErrorListener();
+    _typeProvider = new TestTypeProvider();
+    _analyzer = _createAnalyzer();
+  }
+
+  void test_flatten_derived() {
+    // class Derived<T> extends Future<T> { ... }
+    ClassElementImpl derivedClass =
+        ElementFactory.classElement2('Derived', ['T']);
+    derivedClass.supertype = _typeProvider.futureType
+        .substitute4([derivedClass.typeParameters[0].type]);
+    InterfaceType intType = _typeProvider.intType;
+    DartType dynamicType = _typeProvider.dynamicType;
+    InterfaceType derivedIntType = derivedClass.type.substitute4([intType]);
+    // flatten(Derived) = dynamic
+    InterfaceType derivedDynamicType =
+        derivedClass.type.substitute4([dynamicType]);
+    expect(_flatten(derivedDynamicType), dynamicType);
+    // flatten(Derived<int>) = int
+    expect(_flatten(derivedIntType), intType);
+    // flatten(Derived<Derived>) = Derived
+    expect(_flatten(derivedClass.type.substitute4([derivedDynamicType])),
+        derivedDynamicType);
+    // flatten(Derived<Derived<int>>) = Derived<int>
+    expect(_flatten(derivedClass.type.substitute4([derivedIntType])),
+        derivedIntType);
+  }
+
+  void test_flatten_inhibit_recursion() {
+    // class A extends B
+    // class B extends A
+    ClassElementImpl classA = ElementFactory.classElement2('A', []);
+    ClassElementImpl classB = ElementFactory.classElement2('B', []);
+    classA.supertype = classB.type;
+    classB.supertype = classA.type;
+    // flatten(A) = A and flatten(B) = B, since neither class contains Future
+    // in its class hierarchy.  Even though there is a loop in the class
+    // hierarchy, flatten() should terminate.
+    expect(_flatten(classA.type), classA.type);
+    expect(_flatten(classB.type), classB.type);
+  }
+
+  void test_flatten_related_derived_types() {
+    InterfaceType intType = _typeProvider.intType;
+    InterfaceType numType = _typeProvider.numType;
+    // class Derived<T> extends Future<T>
+    ClassElementImpl derivedClass =
+        ElementFactory.classElement2('Derived', ['T']);
+    derivedClass.supertype = _typeProvider.futureType
+        .substitute4([derivedClass.typeParameters[0].type]);
+    InterfaceType derivedType = derivedClass.type;
+    // class A extends Derived<int> implements Derived<num> { ... }
+    ClassElementImpl classA =
+        ElementFactory.classElement('A', derivedType.substitute4([intType]));
+    classA.interfaces = <InterfaceType>[
+      derivedType.substitute4([numType])
+    ];
+    // class B extends Future<num> implements Future<int> { ... }
+    ClassElementImpl classB =
+        ElementFactory.classElement('B', derivedType.substitute4([numType]));
+    classB.interfaces = <InterfaceType>[
+      derivedType.substitute4([intType])
+    ];
+    // flatten(A) = flatten(B) = int, since int is more specific than num.
+    // The code in flatten() that inhibits infinite recursion shouldn't be
+    // fooled by the fact that Derived appears twice in the type hierarchy.
+    expect(_flatten(classA.type), intType);
+    expect(_flatten(classB.type), intType);
+  }
+
+  void test_flatten_related_types() {
+    InterfaceType futureType = _typeProvider.futureType;
+    InterfaceType intType = _typeProvider.intType;
+    InterfaceType numType = _typeProvider.numType;
+    // class A extends Future<int> implements Future<num> { ... }
+    ClassElementImpl classA =
+        ElementFactory.classElement('A', futureType.substitute4([intType]));
+    classA.interfaces = <InterfaceType>[
+      futureType.substitute4([numType])
+    ];
+    // class B extends Future<num> implements Future<int> { ... }
+    ClassElementImpl classB =
+        ElementFactory.classElement('B', futureType.substitute4([numType]));
+    classB.interfaces = <InterfaceType>[
+      futureType.substitute4([intType])
+    ];
+    // flatten(A) = flatten(B) = int, since int is more specific than num.
+    expect(_flatten(classA.type), intType);
+    expect(_flatten(classB.type), intType);
+  }
+
+  void test_flatten_simple() {
+    InterfaceType intType = _typeProvider.intType;
+    DartType dynamicType = _typeProvider.dynamicType;
+    InterfaceType futureDynamicType = _typeProvider.futureDynamicType;
+    InterfaceType futureIntType =
+        _typeProvider.futureType.substitute4([intType]);
+    InterfaceType futureFutureDynamicType =
+        _typeProvider.futureType.substitute4([futureDynamicType]);
+    InterfaceType futureFutureIntType =
+        _typeProvider.futureType.substitute4([futureIntType]);
+    // flatten(int) = int
+    expect(_flatten(intType), intType);
+    // flatten(dynamic) = dynamic
+    expect(_flatten(dynamicType), dynamicType);
+    // flatten(Future) = dynamic
+    expect(_flatten(futureDynamicType), dynamicType);
+    // flatten(Future<int>) = int
+    expect(_flatten(futureIntType), intType);
+    // flatten(Future<Future>) = dynamic
+    expect(_flatten(futureFutureDynamicType), dynamicType);
+    // flatten(Future<Future<int>>) = int
+    expect(_flatten(futureFutureIntType), intType);
+  }
+
+  void test_flatten_unrelated_types() {
+    InterfaceType futureType = _typeProvider.futureType;
+    InterfaceType intType = _typeProvider.intType;
+    InterfaceType stringType = _typeProvider.stringType;
+    // class A extends Future<int> implements Future<String> { ... }
+    ClassElementImpl classA =
+        ElementFactory.classElement('A', futureType.substitute4([intType]));
+    classA.interfaces = <InterfaceType>[
+      futureType.substitute4([stringType])
+    ];
+    // class B extends Future<String> implements Future<int> { ... }
+    ClassElementImpl classB =
+        ElementFactory.classElement('B', futureType.substitute4([stringType]));
+    classB.interfaces = <InterfaceType>[
+      futureType.substitute4([intType])
+    ];
+    // flatten(A) = A and flatten(B) = B, since neither string nor int is more
+    // specific than the other.
+    expect(_flatten(classA.type), classA.type);
+    expect(_flatten(classB.type), classB.type);
+  }
+
+  void test_visitAdjacentStrings() {
+    // "a" "b"
+    Expression node = AstFactory
+        .adjacentStrings([_resolvedString("a"), _resolvedString("b")]);
+    expect(_analyze(node), same(_typeProvider.stringType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitAsExpression() {
+    // class A { ... this as B ... }
+    // class B extends A {}
+    ClassElement superclass = ElementFactory.classElement2("A");
+    InterfaceType superclassType = superclass.type;
+    ClassElement subclass = ElementFactory.classElement("B", superclassType);
+    Expression node = AstFactory.asExpression(
+        AstFactory.thisExpression(), AstFactory.typeName(subclass));
+    expect(_analyze3(node, superclassType), same(subclass.type));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitAssignmentExpression_compound() {
+    // i += 1
+    InterfaceType numType = _typeProvider.numType;
+    SimpleIdentifier identifier = _resolvedVariable(_typeProvider.intType, "i");
+    AssignmentExpression node = AstFactory.assignmentExpression(
+        identifier, TokenType.PLUS_EQ, _resolvedInteger(1));
+    MethodElement plusMethod = getMethod(numType, "+");
+    node.staticElement = plusMethod;
+    expect(_analyze(node), same(numType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitAssignmentExpression_compoundIfNull_differentTypes() {
+    // double d; d ??= 0
+    Expression node = AstFactory.assignmentExpression(
+        _resolvedVariable(_typeProvider.doubleType, 'd'),
+        TokenType.QUESTION_QUESTION_EQ,
+        _resolvedInteger(0));
+    expect(_analyze(node), same(_typeProvider.numType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitAssignmentExpression_compoundIfNull_sameTypes() {
+    // int i; i ??= 0
+    Expression node = AstFactory.assignmentExpression(
+        _resolvedVariable(_typeProvider.intType, 'i'),
+        TokenType.QUESTION_QUESTION_EQ,
+        _resolvedInteger(0));
+    expect(_analyze(node), same(_typeProvider.intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitAssignmentExpression_simple() {
+    // i = 0
+    InterfaceType intType = _typeProvider.intType;
+    Expression node = AstFactory.assignmentExpression(
+        _resolvedVariable(intType, "i"), TokenType.EQ, _resolvedInteger(0));
+    expect(_analyze(node), same(intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitAwaitExpression_flattened() {
+    // await e, where e has type Future<Future<int>>
+    InterfaceType intType = _typeProvider.intType;
+    InterfaceType futureIntType =
+        _typeProvider.futureType.substitute4(<DartType>[intType]);
+    InterfaceType futureFutureIntType =
+        _typeProvider.futureType.substitute4(<DartType>[futureIntType]);
+    Expression node =
+        AstFactory.awaitExpression(_resolvedVariable(futureFutureIntType, 'e'));
+    expect(_analyze(node), same(intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitAwaitExpression_simple() {
+    // await e, where e has type Future<int>
+    InterfaceType intType = _typeProvider.intType;
+    InterfaceType futureIntType =
+        _typeProvider.futureType.substitute4(<DartType>[intType]);
+    Expression node =
+        AstFactory.awaitExpression(_resolvedVariable(futureIntType, 'e'));
+    expect(_analyze(node), same(intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_equals() {
+    // 2 == 3
+    Expression node = AstFactory.binaryExpression(
+        _resolvedInteger(2), TokenType.EQ_EQ, _resolvedInteger(3));
+    expect(_analyze(node), same(_typeProvider.boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_ifNull() {
+    // 1 ?? 1.5
+    Expression node = AstFactory.binaryExpression(
+        _resolvedInteger(1), TokenType.QUESTION_QUESTION, _resolvedDouble(1.5));
+    expect(_analyze(node), same(_typeProvider.numType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_logicalAnd() {
+    // false && true
+    Expression node = AstFactory.binaryExpression(
+        AstFactory.booleanLiteral(false),
+        TokenType.AMPERSAND_AMPERSAND,
+        AstFactory.booleanLiteral(true));
+    expect(_analyze(node), same(_typeProvider.boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_logicalOr() {
+    // false || true
+    Expression node = AstFactory.binaryExpression(
+        AstFactory.booleanLiteral(false),
+        TokenType.BAR_BAR,
+        AstFactory.booleanLiteral(true));
+    expect(_analyze(node), same(_typeProvider.boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_minusID_propagated() {
+    // a - b
+    BinaryExpression node = AstFactory.binaryExpression(
+        _propagatedVariable(_typeProvider.intType, 'a'),
+        TokenType.MINUS,
+        _propagatedVariable(_typeProvider.doubleType, 'b'));
+    node.propagatedElement = getMethod(_typeProvider.numType, "+");
+    _analyze(node);
+    expect(node.propagatedType, same(_typeProvider.doubleType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_notEquals() {
+    // 2 != 3
+    Expression node = AstFactory.binaryExpression(
+        _resolvedInteger(2), TokenType.BANG_EQ, _resolvedInteger(3));
+    expect(_analyze(node), same(_typeProvider.boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_plusID() {
+    // 1 + 2.0
+    BinaryExpression node = AstFactory.binaryExpression(
+        _resolvedInteger(1), TokenType.PLUS, _resolvedDouble(2.0));
+    node.staticElement = getMethod(_typeProvider.numType, "+");
+    expect(_analyze(node), same(_typeProvider.doubleType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_plusII() {
+    // 1 + 2
+    BinaryExpression node = AstFactory.binaryExpression(
+        _resolvedInteger(1), TokenType.PLUS, _resolvedInteger(2));
+    node.staticElement = getMethod(_typeProvider.numType, "+");
+    expect(_analyze(node), same(_typeProvider.intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_plusII_propagated() {
+    // a + b
+    BinaryExpression node = AstFactory.binaryExpression(
+        _propagatedVariable(_typeProvider.intType, 'a'),
+        TokenType.PLUS,
+        _propagatedVariable(_typeProvider.intType, 'b'));
+    node.propagatedElement = getMethod(_typeProvider.numType, "+");
+    _analyze(node);
+    expect(node.propagatedType, same(_typeProvider.intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_slash() {
+    // 2 / 2
+    BinaryExpression node = AstFactory.binaryExpression(
+        _resolvedInteger(2), TokenType.SLASH, _resolvedInteger(2));
+    node.staticElement = getMethod(_typeProvider.numType, "/");
+    expect(_analyze(node), same(_typeProvider.doubleType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_star_notSpecial() {
+    // class A {
+    //   A operator *(double value);
+    // }
+    // (a as A) * 2.0
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    InterfaceType typeA = classA.type;
+    MethodElement operator =
+        ElementFactory.methodElement("*", typeA, [_typeProvider.doubleType]);
+    classA.methods = <MethodElement>[operator];
+    BinaryExpression node = AstFactory.binaryExpression(
+        AstFactory.asExpression(
+            AstFactory.identifier3("a"), AstFactory.typeName(classA)),
+        TokenType.PLUS,
+        _resolvedDouble(2.0));
+    node.staticElement = operator;
+    expect(_analyze(node), same(typeA));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBinaryExpression_starID() {
+    // 1 * 2.0
+    BinaryExpression node = AstFactory.binaryExpression(
+        _resolvedInteger(1), TokenType.PLUS, _resolvedDouble(2.0));
+    node.staticElement = getMethod(_typeProvider.numType, "*");
+    expect(_analyze(node), same(_typeProvider.doubleType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBooleanLiteral_false() {
+    // false
+    Expression node = AstFactory.booleanLiteral(false);
+    expect(_analyze(node), same(_typeProvider.boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitBooleanLiteral_true() {
+    // true
+    Expression node = AstFactory.booleanLiteral(true);
+    expect(_analyze(node), same(_typeProvider.boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitCascadeExpression() {
+    // a..length
+    Expression node = AstFactory.cascadeExpression(
+        _resolvedString("a"), [AstFactory.propertyAccess2(null, "length")]);
+    expect(_analyze(node), same(_typeProvider.stringType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitConditionalExpression_differentTypes() {
+    // true ? 1.0 : 0
+    Expression node = AstFactory.conditionalExpression(
+        AstFactory.booleanLiteral(true),
+        _resolvedDouble(1.0),
+        _resolvedInteger(0));
+    expect(_analyze(node), same(_typeProvider.numType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitConditionalExpression_sameTypes() {
+    // true ? 1 : 0
+    Expression node = AstFactory.conditionalExpression(
+        AstFactory.booleanLiteral(true),
+        _resolvedInteger(1),
+        _resolvedInteger(0));
+    expect(_analyze(node), same(_typeProvider.intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitDoubleLiteral() {
+    // 4.33
+    Expression node = AstFactory.doubleLiteral(4.33);
+    expect(_analyze(node), same(_typeProvider.doubleType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_async_block() {
+    // () async {}
+    BlockFunctionBody body = AstFactory.blockFunctionBody2();
+    body.keyword = TokenFactory.tokenFromString('async');
+    FunctionExpression node =
+        _resolvedFunctionExpression(AstFactory.formalParameterList([]), body);
+    DartType resultType = _analyze(node);
+    _assertFunctionType(
+        _typeProvider.futureDynamicType, null, null, null, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_async_expression() {
+    // () async => e, where e has type int
+    InterfaceType intType = _typeProvider.intType;
+    InterfaceType futureIntType =
+        _typeProvider.futureType.substitute4(<DartType>[intType]);
+    Expression expression = _resolvedVariable(intType, 'e');
+    ExpressionFunctionBody body = AstFactory.expressionFunctionBody(expression);
+    body.keyword = TokenFactory.tokenFromString('async');
+    FunctionExpression node =
+        _resolvedFunctionExpression(AstFactory.formalParameterList([]), body);
+    DartType resultType = _analyze(node);
+    _assertFunctionType(futureIntType, null, null, null, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_async_expression_flatten() {
+    // () async => e, where e has type Future<int>
+    InterfaceType intType = _typeProvider.intType;
+    InterfaceType futureIntType =
+        _typeProvider.futureType.substitute4(<DartType>[intType]);
+    Expression expression = _resolvedVariable(futureIntType, 'e');
+    ExpressionFunctionBody body = AstFactory.expressionFunctionBody(expression);
+    body.keyword = TokenFactory.tokenFromString('async');
+    FunctionExpression node =
+        _resolvedFunctionExpression(AstFactory.formalParameterList([]), body);
+    DartType resultType = _analyze(node);
+    _assertFunctionType(futureIntType, null, null, null, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_async_expression_flatten_twice() {
+    // () async => e, where e has type Future<Future<int>>
+    InterfaceType intType = _typeProvider.intType;
+    InterfaceType futureIntType =
+        _typeProvider.futureType.substitute4(<DartType>[intType]);
+    InterfaceType futureFutureIntType =
+        _typeProvider.futureType.substitute4(<DartType>[futureIntType]);
+    Expression expression = _resolvedVariable(futureFutureIntType, 'e');
+    ExpressionFunctionBody body = AstFactory.expressionFunctionBody(expression);
+    body.keyword = TokenFactory.tokenFromString('async');
+    FunctionExpression node =
+        _resolvedFunctionExpression(AstFactory.formalParameterList([]), body);
+    DartType resultType = _analyze(node);
+    _assertFunctionType(futureIntType, null, null, null, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_generator_async() {
+    // () async* {}
+    BlockFunctionBody body = AstFactory.blockFunctionBody2();
+    body.keyword = TokenFactory.tokenFromString('async');
+    body.star = TokenFactory.tokenFromType(TokenType.STAR);
+    FunctionExpression node =
+        _resolvedFunctionExpression(AstFactory.formalParameterList([]), body);
+    DartType resultType = _analyze(node);
+    _assertFunctionType(
+        _typeProvider.streamDynamicType, null, null, null, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_generator_sync() {
+    // () sync* {}
+    BlockFunctionBody body = AstFactory.blockFunctionBody2();
+    body.keyword = TokenFactory.tokenFromString('sync');
+    body.star = TokenFactory.tokenFromType(TokenType.STAR);
+    FunctionExpression node =
+        _resolvedFunctionExpression(AstFactory.formalParameterList([]), body);
+    DartType resultType = _analyze(node);
+    _assertFunctionType(
+        _typeProvider.iterableDynamicType, null, null, null, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_named_block() {
+    // ({p1 : 0, p2 : 0}) {}
+    DartType dynamicType = _typeProvider.dynamicType;
+    FormalParameter p1 = AstFactory.namedFormalParameter(
+        AstFactory.simpleFormalParameter3("p1"), _resolvedInteger(0));
+    _setType(p1, dynamicType);
+    FormalParameter p2 = AstFactory.namedFormalParameter(
+        AstFactory.simpleFormalParameter3("p2"), _resolvedInteger(0));
+    _setType(p2, dynamicType);
+    FunctionExpression node = _resolvedFunctionExpression(
+        AstFactory.formalParameterList([p1, p2]),
+        AstFactory.blockFunctionBody2());
+    _analyze5(p1);
+    _analyze5(p2);
+    DartType resultType = _analyze(node);
+    Map<String, DartType> expectedNamedTypes = new HashMap<String, DartType>();
+    expectedNamedTypes["p1"] = dynamicType;
+    expectedNamedTypes["p2"] = dynamicType;
+    _assertFunctionType(
+        dynamicType, null, null, expectedNamedTypes, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_named_expression() {
+    // ({p : 0}) -> 0;
+    DartType dynamicType = _typeProvider.dynamicType;
+    FormalParameter p = AstFactory.namedFormalParameter(
+        AstFactory.simpleFormalParameter3("p"), _resolvedInteger(0));
+    _setType(p, dynamicType);
+    FunctionExpression node = _resolvedFunctionExpression(
+        AstFactory.formalParameterList([p]),
+        AstFactory.expressionFunctionBody(_resolvedInteger(0)));
+    _analyze5(p);
+    DartType resultType = _analyze(node);
+    Map<String, DartType> expectedNamedTypes = new HashMap<String, DartType>();
+    expectedNamedTypes["p"] = dynamicType;
+    _assertFunctionType(
+        _typeProvider.intType, null, null, expectedNamedTypes, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_normal_block() {
+    // (p1, p2) {}
+    DartType dynamicType = _typeProvider.dynamicType;
+    FormalParameter p1 = AstFactory.simpleFormalParameter3("p1");
+    _setType(p1, dynamicType);
+    FormalParameter p2 = AstFactory.simpleFormalParameter3("p2");
+    _setType(p2, dynamicType);
+    FunctionExpression node = _resolvedFunctionExpression(
+        AstFactory.formalParameterList([p1, p2]),
+        AstFactory.blockFunctionBody2());
+    _analyze5(p1);
+    _analyze5(p2);
+    DartType resultType = _analyze(node);
+    _assertFunctionType(dynamicType, <DartType>[dynamicType, dynamicType], null,
+        null, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_normal_expression() {
+    // (p1, p2) -> 0
+    DartType dynamicType = _typeProvider.dynamicType;
+    FormalParameter p = AstFactory.simpleFormalParameter3("p");
+    _setType(p, dynamicType);
+    FunctionExpression node = _resolvedFunctionExpression(
+        AstFactory.formalParameterList([p]),
+        AstFactory.expressionFunctionBody(_resolvedInteger(0)));
+    _analyze5(p);
+    DartType resultType = _analyze(node);
+    _assertFunctionType(
+        _typeProvider.intType, <DartType>[dynamicType], null, null, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_normalAndNamed_block() {
+    // (p1, {p2 : 0}) {}
+    DartType dynamicType = _typeProvider.dynamicType;
+    FormalParameter p1 = AstFactory.simpleFormalParameter3("p1");
+    _setType(p1, dynamicType);
+    FormalParameter p2 = AstFactory.namedFormalParameter(
+        AstFactory.simpleFormalParameter3("p2"), _resolvedInteger(0));
+    _setType(p2, dynamicType);
+    FunctionExpression node = _resolvedFunctionExpression(
+        AstFactory.formalParameterList([p1, p2]),
+        AstFactory.blockFunctionBody2());
+    _analyze5(p2);
+    DartType resultType = _analyze(node);
+    Map<String, DartType> expectedNamedTypes = new HashMap<String, DartType>();
+    expectedNamedTypes["p2"] = dynamicType;
+    _assertFunctionType(dynamicType, <DartType>[dynamicType], null,
+        expectedNamedTypes, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_normalAndNamed_expression() {
+    // (p1, {p2 : 0}) -> 0
+    DartType dynamicType = _typeProvider.dynamicType;
+    FormalParameter p1 = AstFactory.simpleFormalParameter3("p1");
+    _setType(p1, dynamicType);
+    FormalParameter p2 = AstFactory.namedFormalParameter(
+        AstFactory.simpleFormalParameter3("p2"), _resolvedInteger(0));
+    _setType(p2, dynamicType);
+    FunctionExpression node = _resolvedFunctionExpression(
+        AstFactory.formalParameterList([p1, p2]),
+        AstFactory.expressionFunctionBody(_resolvedInteger(0)));
+    _analyze5(p2);
+    DartType resultType = _analyze(node);
+    Map<String, DartType> expectedNamedTypes = new HashMap<String, DartType>();
+    expectedNamedTypes["p2"] = dynamicType;
+    _assertFunctionType(_typeProvider.intType, <DartType>[dynamicType], null,
+        expectedNamedTypes, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_normalAndPositional_block() {
+    // (p1, [p2 = 0]) {}
+    DartType dynamicType = _typeProvider.dynamicType;
+    FormalParameter p1 = AstFactory.simpleFormalParameter3("p1");
+    _setType(p1, dynamicType);
+    FormalParameter p2 = AstFactory.positionalFormalParameter(
+        AstFactory.simpleFormalParameter3("p2"), _resolvedInteger(0));
+    _setType(p2, dynamicType);
+    FunctionExpression node = _resolvedFunctionExpression(
+        AstFactory.formalParameterList([p1, p2]),
+        AstFactory.blockFunctionBody2());
+    _analyze5(p1);
+    _analyze5(p2);
+    DartType resultType = _analyze(node);
+    _assertFunctionType(dynamicType, <DartType>[dynamicType],
+        <DartType>[dynamicType], null, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_normalAndPositional_expression() {
+    // (p1, [p2 = 0]) -> 0
+    DartType dynamicType = _typeProvider.dynamicType;
+    FormalParameter p1 = AstFactory.simpleFormalParameter3("p1");
+    _setType(p1, dynamicType);
+    FormalParameter p2 = AstFactory.positionalFormalParameter(
+        AstFactory.simpleFormalParameter3("p2"), _resolvedInteger(0));
+    _setType(p2, dynamicType);
+    FunctionExpression node = _resolvedFunctionExpression(
+        AstFactory.formalParameterList([p1, p2]),
+        AstFactory.expressionFunctionBody(_resolvedInteger(0)));
+    _analyze5(p1);
+    _analyze5(p2);
+    DartType resultType = _analyze(node);
+    _assertFunctionType(_typeProvider.intType, <DartType>[dynamicType],
+        <DartType>[dynamicType], null, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_positional_block() {
+    // ([p1 = 0, p2 = 0]) {}
+    DartType dynamicType = _typeProvider.dynamicType;
+    FormalParameter p1 = AstFactory.positionalFormalParameter(
+        AstFactory.simpleFormalParameter3("p1"), _resolvedInteger(0));
+    _setType(p1, dynamicType);
+    FormalParameter p2 = AstFactory.positionalFormalParameter(
+        AstFactory.simpleFormalParameter3("p2"), _resolvedInteger(0));
+    _setType(p2, dynamicType);
+    FunctionExpression node = _resolvedFunctionExpression(
+        AstFactory.formalParameterList([p1, p2]),
+        AstFactory.blockFunctionBody2());
+    _analyze5(p1);
+    _analyze5(p2);
+    DartType resultType = _analyze(node);
+    _assertFunctionType(dynamicType, null, <DartType>[dynamicType, dynamicType],
+        null, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionExpression_positional_expression() {
+    // ([p1 = 0, p2 = 0]) -> 0
+    DartType dynamicType = _typeProvider.dynamicType;
+    FormalParameter p = AstFactory.positionalFormalParameter(
+        AstFactory.simpleFormalParameter3("p"), _resolvedInteger(0));
+    _setType(p, dynamicType);
+    FunctionExpression node = _resolvedFunctionExpression(
+        AstFactory.formalParameterList([p]),
+        AstFactory.expressionFunctionBody(_resolvedInteger(0)));
+    _analyze5(p);
+    DartType resultType = _analyze(node);
+    _assertFunctionType(
+        _typeProvider.intType, null, <DartType>[dynamicType], null, resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitIndexExpression_getter() {
+    // List a;
+    // a[2]
+    InterfaceType listType = _typeProvider.listType;
+    SimpleIdentifier identifier = _resolvedVariable(listType, "a");
+    IndexExpression node =
+        AstFactory.indexExpression(identifier, _resolvedInteger(2));
+    MethodElement indexMethod = listType.element.methods[0];
+    node.staticElement = indexMethod;
+    expect(_analyze(node), same(listType.typeArguments[0]));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitIndexExpression_setter() {
+    // List a;
+    // a[2] = 0
+    InterfaceType listType = _typeProvider.listType;
+    SimpleIdentifier identifier = _resolvedVariable(listType, "a");
+    IndexExpression node =
+        AstFactory.indexExpression(identifier, _resolvedInteger(2));
+    MethodElement indexMethod = listType.element.methods[1];
+    node.staticElement = indexMethod;
+    AstFactory.assignmentExpression(node, TokenType.EQ, AstFactory.integer(0));
+    expect(_analyze(node), same(listType.typeArguments[0]));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitIndexExpression_typeParameters() {
+    // List<int> list = ...
+    // list[0]
+    InterfaceType intType = _typeProvider.intType;
+    InterfaceType listType = _typeProvider.listType;
+    // (int) -> E
+    MethodElement methodElement = getMethod(listType, "[]");
+    // "list" has type List<int>
+    SimpleIdentifier identifier = AstFactory.identifier3("list");
+    InterfaceType listOfIntType = listType.substitute4(<DartType>[intType]);
+    identifier.staticType = listOfIntType;
+    // list[0] has MethodElement element (int) -> E
+    IndexExpression indexExpression =
+        AstFactory.indexExpression(identifier, AstFactory.integer(0));
+    MethodElement indexMethod = MethodMember.from(methodElement, listOfIntType);
+    indexExpression.staticElement = indexMethod;
+    // analyze and assert result of the index expression
+    expect(_analyze(indexExpression), same(intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitIndexExpression_typeParameters_inSetterContext() {
+    // List<int> list = ...
+    // list[0] = 0;
+    InterfaceType intType = _typeProvider.intType;
+    InterfaceType listType = _typeProvider.listType;
+    // (int, E) -> void
+    MethodElement methodElement = getMethod(listType, "[]=");
+    // "list" has type List<int>
+    SimpleIdentifier identifier = AstFactory.identifier3("list");
+    InterfaceType listOfIntType = listType.substitute4(<DartType>[intType]);
+    identifier.staticType = listOfIntType;
+    // list[0] has MethodElement element (int) -> E
+    IndexExpression indexExpression =
+        AstFactory.indexExpression(identifier, AstFactory.integer(0));
+    MethodElement indexMethod = MethodMember.from(methodElement, listOfIntType);
+    indexExpression.staticElement = indexMethod;
+    // list[0] should be in a setter context
+    AstFactory.assignmentExpression(
+        indexExpression, TokenType.EQ, AstFactory.integer(0));
+    // analyze and assert result of the index expression
+    expect(_analyze(indexExpression), same(intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitInstanceCreationExpression_named() {
+    // new C.m()
+    ClassElementImpl classElement = ElementFactory.classElement2("C");
+    String constructorName = "m";
+    ConstructorElementImpl constructor =
+        ElementFactory.constructorElement2(classElement, constructorName);
+    constructor.returnType = classElement.type;
+    FunctionTypeImpl constructorType = new FunctionTypeImpl(constructor);
+    constructor.type = constructorType;
+    classElement.constructors = <ConstructorElement>[constructor];
+    InstanceCreationExpression node = AstFactory.instanceCreationExpression2(
+        null,
+        AstFactory.typeName(classElement),
+        [AstFactory.identifier3(constructorName)]);
+    node.staticElement = constructor;
+    expect(_analyze(node), same(classElement.type));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitInstanceCreationExpression_typeParameters() {
+    // new C<I>()
+    ClassElementImpl elementC = ElementFactory.classElement2("C", ["E"]);
+    ClassElementImpl elementI = ElementFactory.classElement2("I");
+    ConstructorElementImpl constructor =
+        ElementFactory.constructorElement2(elementC, null);
+    elementC.constructors = <ConstructorElement>[constructor];
+    constructor.returnType = elementC.type;
+    FunctionTypeImpl constructorType = new FunctionTypeImpl(constructor);
+    constructor.type = constructorType;
+    TypeName typeName =
+        AstFactory.typeName(elementC, [AstFactory.typeName(elementI)]);
+    typeName.type = elementC.type.substitute4(<DartType>[elementI.type]);
+    InstanceCreationExpression node =
+        AstFactory.instanceCreationExpression2(null, typeName);
+    node.staticElement = constructor;
+    InterfaceType interfaceType = _analyze(node) as InterfaceType;
+    List<DartType> typeArgs = interfaceType.typeArguments;
+    expect(typeArgs.length, 1);
+    expect(typeArgs[0], elementI.type);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitInstanceCreationExpression_unnamed() {
+    // new C()
+    ClassElementImpl classElement = ElementFactory.classElement2("C");
+    ConstructorElementImpl constructor =
+        ElementFactory.constructorElement2(classElement, null);
+    constructor.returnType = classElement.type;
+    FunctionTypeImpl constructorType = new FunctionTypeImpl(constructor);
+    constructor.type = constructorType;
+    classElement.constructors = <ConstructorElement>[constructor];
+    InstanceCreationExpression node = AstFactory.instanceCreationExpression2(
+        null, AstFactory.typeName(classElement));
+    node.staticElement = constructor;
+    expect(_analyze(node), same(classElement.type));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitIntegerLiteral() {
+    // 42
+    Expression node = _resolvedInteger(42);
+    expect(_analyze(node), same(_typeProvider.intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitIsExpression_negated() {
+    // a is! String
+    Expression node = AstFactory.isExpression(
+        _resolvedString("a"), true, AstFactory.typeName4("String"));
+    expect(_analyze(node), same(_typeProvider.boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitIsExpression_notNegated() {
+    // a is String
+    Expression node = AstFactory.isExpression(
+        _resolvedString("a"), false, AstFactory.typeName4("String"));
+    expect(_analyze(node), same(_typeProvider.boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitListLiteral_empty() {
+    // []
+    Expression node = AstFactory.listLiteral();
+    DartType resultType = _analyze(node);
+    _assertType2(
+        _typeProvider.listType
+            .substitute4(<DartType>[_typeProvider.dynamicType]),
+        resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitListLiteral_nonEmpty() {
+    // [0]
+    Expression node = AstFactory.listLiteral([_resolvedInteger(0)]);
+    DartType resultType = _analyze(node);
+    _assertType2(
+        _typeProvider.listType
+            .substitute4(<DartType>[_typeProvider.dynamicType]),
+        resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitMapLiteral_empty() {
+    // {}
+    Expression node = AstFactory.mapLiteral2();
+    DartType resultType = _analyze(node);
+    _assertType2(
+        _typeProvider.mapType.substitute4(
+            <DartType>[_typeProvider.dynamicType, _typeProvider.dynamicType]),
+        resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitMapLiteral_nonEmpty() {
+    // {"k" : 0}
+    Expression node = AstFactory
+        .mapLiteral2([AstFactory.mapLiteralEntry("k", _resolvedInteger(0))]);
+    DartType resultType = _analyze(node);
+    _assertType2(
+        _typeProvider.mapType.substitute4(
+            <DartType>[_typeProvider.dynamicType, _typeProvider.dynamicType]),
+        resultType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitMethodInvocation_then() {
+    // then()
+    Expression node = AstFactory.methodInvocation(null, "then");
+    _analyze(node);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitNamedExpression() {
+    // n: a
+    Expression node = AstFactory.namedExpression2("n", _resolvedString("a"));
+    expect(_analyze(node), same(_typeProvider.stringType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitNullLiteral() {
+    // null
+    Expression node = AstFactory.nullLiteral();
+    expect(_analyze(node), same(_typeProvider.bottomType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitParenthesizedExpression() {
+    // (0)
+    Expression node = AstFactory.parenthesizedExpression(_resolvedInteger(0));
+    expect(_analyze(node), same(_typeProvider.intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPostfixExpression_minusMinus() {
+    // 0--
+    PostfixExpression node = AstFactory.postfixExpression(
+        _resolvedInteger(0), TokenType.MINUS_MINUS);
+    expect(_analyze(node), same(_typeProvider.intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPostfixExpression_plusPlus() {
+    // 0++
+    PostfixExpression node =
+        AstFactory.postfixExpression(_resolvedInteger(0), TokenType.PLUS_PLUS);
+    expect(_analyze(node), same(_typeProvider.intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixedIdentifier_getter() {
+    DartType boolType = _typeProvider.boolType;
+    PropertyAccessorElementImpl getter =
+        ElementFactory.getterElement("b", false, boolType);
+    PrefixedIdentifier node = AstFactory.identifier5("a", "b");
+    node.identifier.staticElement = getter;
+    expect(_analyze(node), same(boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixedIdentifier_setter() {
+    DartType boolType = _typeProvider.boolType;
+    FieldElementImpl field =
+        ElementFactory.fieldElement("b", false, false, false, boolType);
+    PropertyAccessorElement setter = field.setter;
+    PrefixedIdentifier node = AstFactory.identifier5("a", "b");
+    node.identifier.staticElement = setter;
+    expect(_analyze(node), same(boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixedIdentifier_variable() {
+    VariableElementImpl variable = ElementFactory.localVariableElement2("b");
+    variable.type = _typeProvider.boolType;
+    PrefixedIdentifier node = AstFactory.identifier5("a", "b");
+    node.identifier.staticElement = variable;
+    expect(_analyze(node), same(_typeProvider.boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixExpression_bang() {
+    // !0
+    PrefixExpression node =
+        AstFactory.prefixExpression(TokenType.BANG, _resolvedInteger(0));
+    expect(_analyze(node), same(_typeProvider.boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixExpression_minus() {
+    // -0
+    PrefixExpression node =
+        AstFactory.prefixExpression(TokenType.MINUS, _resolvedInteger(0));
+    MethodElement minusMethod = getMethod(_typeProvider.numType, "-");
+    node.staticElement = minusMethod;
+    expect(_analyze(node), same(_typeProvider.numType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixExpression_minusMinus() {
+    // --0
+    PrefixExpression node =
+        AstFactory.prefixExpression(TokenType.MINUS_MINUS, _resolvedInteger(0));
+    MethodElement minusMethod = getMethod(_typeProvider.numType, "-");
+    node.staticElement = minusMethod;
+    expect(_analyze(node), same(_typeProvider.intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixExpression_not() {
+    // !true
+    Expression node = AstFactory.prefixExpression(
+        TokenType.BANG, AstFactory.booleanLiteral(true));
+    expect(_analyze(node), same(_typeProvider.boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixExpression_plusPlus() {
+    // ++0
+    PrefixExpression node =
+        AstFactory.prefixExpression(TokenType.PLUS_PLUS, _resolvedInteger(0));
+    MethodElement plusMethod = getMethod(_typeProvider.numType, "+");
+    node.staticElement = plusMethod;
+    expect(_analyze(node), same(_typeProvider.intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPrefixExpression_tilde() {
+    // ~0
+    PrefixExpression node =
+        AstFactory.prefixExpression(TokenType.TILDE, _resolvedInteger(0));
+    MethodElement tildeMethod = getMethod(_typeProvider.intType, "~");
+    node.staticElement = tildeMethod;
+    expect(_analyze(node), same(_typeProvider.intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPropertyAccess_propagated_getter() {
+    DartType boolType = _typeProvider.boolType;
+    PropertyAccessorElementImpl getter =
+        ElementFactory.getterElement("b", false, boolType);
+    PropertyAccess node =
+        AstFactory.propertyAccess2(AstFactory.identifier3("a"), "b");
+    node.propertyName.propagatedElement = getter;
+    expect(_analyze2(node, false), same(boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPropertyAccess_propagated_setter() {
+    DartType boolType = _typeProvider.boolType;
+    FieldElementImpl field =
+        ElementFactory.fieldElement("b", false, false, false, boolType);
+    PropertyAccessorElement setter = field.setter;
+    PropertyAccess node =
+        AstFactory.propertyAccess2(AstFactory.identifier3("a"), "b");
+    node.propertyName.propagatedElement = setter;
+    expect(_analyze2(node, false), same(boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPropertyAccess_static_getter() {
+    DartType boolType = _typeProvider.boolType;
+    PropertyAccessorElementImpl getter =
+        ElementFactory.getterElement("b", false, boolType);
+    PropertyAccess node =
+        AstFactory.propertyAccess2(AstFactory.identifier3("a"), "b");
+    node.propertyName.staticElement = getter;
+    expect(_analyze(node), same(boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitPropertyAccess_static_setter() {
+    DartType boolType = _typeProvider.boolType;
+    FieldElementImpl field =
+        ElementFactory.fieldElement("b", false, false, false, boolType);
+    PropertyAccessorElement setter = field.setter;
+    PropertyAccess node =
+        AstFactory.propertyAccess2(AstFactory.identifier3("a"), "b");
+    node.propertyName.staticElement = setter;
+    expect(_analyze(node), same(boolType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSimpleIdentifier_dynamic() {
+    // "dynamic"
+    SimpleIdentifier identifier = AstFactory.identifier3('dynamic');
+    DynamicElementImpl element = DynamicElementImpl.instance;
+    identifier.staticElement = element;
+    identifier.staticType = _typeProvider.typeType;
+    expect(_analyze(identifier), same(_typeProvider.typeType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSimpleStringLiteral() {
+    // "a"
+    Expression node = _resolvedString("a");
+    expect(_analyze(node), same(_typeProvider.stringType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitStringInterpolation() {
+    // "a${'b'}c"
+    Expression node = AstFactory.string([
+      AstFactory.interpolationString("a", "a"),
+      AstFactory.interpolationExpression(_resolvedString("b")),
+      AstFactory.interpolationString("c", "c")
+    ]);
+    expect(_analyze(node), same(_typeProvider.stringType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSuperExpression() {
+    // super
+    InterfaceType superType = ElementFactory.classElement2("A").type;
+    InterfaceType thisType = ElementFactory.classElement("B", superType).type;
+    Expression node = AstFactory.superExpression();
+    expect(_analyze3(node, thisType), same(thisType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSymbolLiteral() {
+    expect(_analyze(AstFactory.symbolLiteral(["a"])),
+        same(_typeProvider.symbolType));
+  }
+
+  void test_visitThisExpression() {
+    // this
+    InterfaceType thisType = ElementFactory
+        .classElement("B", ElementFactory.classElement2("A").type)
+        .type;
+    Expression node = AstFactory.thisExpression();
+    expect(_analyze3(node, thisType), same(thisType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitThrowExpression_withoutValue() {
+    // throw
+    Expression node = AstFactory.throwExpression();
+    expect(_analyze(node), same(_typeProvider.bottomType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitThrowExpression_withValue() {
+    // throw 0
+    Expression node = AstFactory.throwExpression2(_resolvedInteger(0));
+    expect(_analyze(node), same(_typeProvider.bottomType));
+    _listener.assertNoErrors();
+  }
+
+  /**
+   * Return the type associated with the given expression after the static type analyzer has
+   * computed a type for it.
+   *
+   * @param node the expression with which the type is associated
+   * @return the type associated with the expression
+   */
+  DartType _analyze(Expression node) => _analyze4(node, null, true);
+
+  /**
+   * Return the type associated with the given expression after the static or propagated type
+   * analyzer has computed a type for it.
+   *
+   * @param node the expression with which the type is associated
+   * @param useStaticType `true` if the static type is being requested, and `false` if
+   *          the propagated type is being requested
+   * @return the type associated with the expression
+   */
+  DartType _analyze2(Expression node, bool useStaticType) =>
+      _analyze4(node, null, useStaticType);
+
+  /**
+   * Return the type associated with the given expression after the static type analyzer has
+   * computed a type for it.
+   *
+   * @param node the expression with which the type is associated
+   * @param thisType the type of 'this'
+   * @return the type associated with the expression
+   */
+  DartType _analyze3(Expression node, InterfaceType thisType) =>
+      _analyze4(node, thisType, true);
+
+  /**
+   * Return the type associated with the given expression after the static type analyzer has
+   * computed a type for it.
+   *
+   * @param node the expression with which the type is associated
+   * @param thisType the type of 'this'
+   * @param useStaticType `true` if the static type is being requested, and `false` if
+   *          the propagated type is being requested
+   * @return the type associated with the expression
+   */
+  DartType _analyze4(
+      Expression node, InterfaceType thisType, bool useStaticType) {
+    try {
+      _analyzer.thisType = thisType;
+    } catch (exception) {
+      throw new IllegalArgumentException(
+          "Could not set type of 'this'", exception);
+    }
+    node.accept(_analyzer);
+    if (useStaticType) {
+      return node.staticType;
+    } else {
+      return node.propagatedType;
+    }
+  }
+
+  /**
+   * Return the type associated with the given parameter after the static type analyzer has computed
+   * a type for it.
+   *
+   * @param node the parameter with which the type is associated
+   * @return the type associated with the parameter
+   */
+  DartType _analyze5(FormalParameter node) {
+    node.accept(_analyzer);
+    return (node.identifier.staticElement as ParameterElement).type;
+  }
+
+  /**
+   * Assert that the actual type is a function type with the expected characteristics.
+   *
+   * @param expectedReturnType the expected return type of the function
+   * @param expectedNormalTypes the expected types of the normal parameters
+   * @param expectedOptionalTypes the expected types of the optional parameters
+   * @param expectedNamedTypes the expected types of the named parameters
+   * @param actualType the type being tested
+   */
+  void _assertFunctionType(
+      DartType expectedReturnType,
+      List<DartType> expectedNormalTypes,
+      List<DartType> expectedOptionalTypes,
+      Map<String, DartType> expectedNamedTypes,
+      DartType actualType) {
+    EngineTestCase.assertInstanceOf(
+        (obj) => obj is FunctionType, FunctionType, actualType);
+    FunctionType functionType = actualType as FunctionType;
+    List<DartType> normalTypes = functionType.normalParameterTypes;
+    if (expectedNormalTypes == null) {
+      expect(normalTypes, hasLength(0));
+    } else {
+      int expectedCount = expectedNormalTypes.length;
+      expect(normalTypes, hasLength(expectedCount));
+      for (int i = 0; i < expectedCount; i++) {
+        expect(normalTypes[i], same(expectedNormalTypes[i]));
+      }
+    }
+    List<DartType> optionalTypes = functionType.optionalParameterTypes;
+    if (expectedOptionalTypes == null) {
+      expect(optionalTypes, hasLength(0));
+    } else {
+      int expectedCount = expectedOptionalTypes.length;
+      expect(optionalTypes, hasLength(expectedCount));
+      for (int i = 0; i < expectedCount; i++) {
+        expect(optionalTypes[i], same(expectedOptionalTypes[i]));
+      }
+    }
+    Map<String, DartType> namedTypes = functionType.namedParameterTypes;
+    if (expectedNamedTypes == null) {
+      expect(namedTypes, hasLength(0));
+    } else {
+      expect(namedTypes, hasLength(expectedNamedTypes.length));
+      expectedNamedTypes.forEach((String name, DartType type) {
+        expect(namedTypes[name], same(type));
+      });
+    }
+    expect(functionType.returnType, equals(expectedReturnType));
+  }
+
+  void _assertType(
+      InterfaceTypeImpl expectedType, InterfaceTypeImpl actualType) {
+    expect(actualType.displayName, expectedType.displayName);
+    expect(actualType.element, expectedType.element);
+    List<DartType> expectedArguments = expectedType.typeArguments;
+    int length = expectedArguments.length;
+    List<DartType> actualArguments = actualType.typeArguments;
+    expect(actualArguments, hasLength(length));
+    for (int i = 0; i < length; i++) {
+      _assertType2(expectedArguments[i], actualArguments[i]);
+    }
+  }
+
+  void _assertType2(DartType expectedType, DartType actualType) {
+    if (expectedType is InterfaceTypeImpl) {
+      EngineTestCase.assertInstanceOf(
+          (obj) => obj is InterfaceTypeImpl, InterfaceTypeImpl, actualType);
+      _assertType(expectedType, actualType as InterfaceTypeImpl);
+    }
+    // TODO(brianwilkerson) Compare other kinds of types then make this a shared
+    // utility method.
+  }
+
+  /**
+   * Create the analyzer used by the tests.
+   *
+   * @return the analyzer to be used by the tests
+   */
+  StaticTypeAnalyzer _createAnalyzer() {
+    InternalAnalysisContext context = AnalysisContextFactory.contextWithCore();
+    FileBasedSource source =
+        new FileBasedSource(FileUtilities2.createFile("/lib.dart"));
+    CompilationUnitElementImpl definingCompilationUnit =
+        new CompilationUnitElementImpl("lib.dart");
+    definingCompilationUnit.librarySource =
+        definingCompilationUnit.source = source;
+    LibraryElementImpl definingLibrary =
+        new LibraryElementImpl.forNode(context, null);
+    definingLibrary.definingCompilationUnit = definingCompilationUnit;
+    Library library = new Library(context, _listener, source);
+    library.libraryElement = definingLibrary;
+    _visitor = new ResolverVisitor(
+        library.libraryElement, source, _typeProvider, library.errorListener,
+        nameScope: library.libraryScope,
+        inheritanceManager: library.inheritanceManager);
+    _visitor.overrideManager.enterScope();
+    try {
+      return _visitor.typeAnalyzer;
+    } catch (exception) {
+      throw new IllegalArgumentException(
+          "Could not create analyzer", exception);
+    }
+  }
+
+  DartType _flatten(DartType type) =>
+      StaticTypeAnalyzer.flattenFutures(_typeProvider, type);
+
+  /**
+   * Return a simple identifier that has been resolved to a variable element with the given type.
+   *
+   * @param type the type of the variable being represented
+   * @param variableName the name of the variable
+   * @return a simple identifier that has been resolved to a variable element with the given type
+   */
+  SimpleIdentifier _propagatedVariable(
+      InterfaceType type, String variableName) {
+    SimpleIdentifier identifier = AstFactory.identifier3(variableName);
+    VariableElementImpl element =
+        ElementFactory.localVariableElement(identifier);
+    element.type = type;
+    identifier.staticType = _typeProvider.dynamicType;
+    identifier.propagatedElement = element;
+    identifier.propagatedType = type;
+    return identifier;
+  }
+
+  /**
+   * Return an integer literal that has been resolved to the correct type.
+   *
+   * @param value the value of the literal
+   * @return an integer literal that has been resolved to the correct type
+   */
+  DoubleLiteral _resolvedDouble(double value) {
+    DoubleLiteral literal = AstFactory.doubleLiteral(value);
+    literal.staticType = _typeProvider.doubleType;
+    return literal;
+  }
+
+  /**
+   * Create a function expression that has an element associated with it, where the element has an
+   * incomplete type associated with it (just like the one
+   * [ElementBuilder.visitFunctionExpression] would have built if we had
+   * run it).
+   *
+   * @param parameters the parameters to the function
+   * @param body the body of the function
+   * @return a resolved function expression
+   */
+  FunctionExpression _resolvedFunctionExpression(
+      FormalParameterList parameters, FunctionBody body) {
+    List<ParameterElement> parameterElements = new List<ParameterElement>();
+    for (FormalParameter parameter in parameters.parameters) {
+      ParameterElementImpl element =
+          new ParameterElementImpl.forNode(parameter.identifier);
+      element.parameterKind = parameter.kind;
+      element.type = _typeProvider.dynamicType;
+      parameter.identifier.staticElement = element;
+      parameterElements.add(element);
+    }
+    FunctionExpression node = AstFactory.functionExpression2(parameters, body);
+    FunctionElementImpl element = new FunctionElementImpl.forNode(null);
+    element.parameters = parameterElements;
+    element.type = new FunctionTypeImpl(element);
+    node.element = element;
+    return node;
+  }
+
+  /**
+   * Return an integer literal that has been resolved to the correct type.
+   *
+   * @param value the value of the literal
+   * @return an integer literal that has been resolved to the correct type
+   */
+  IntegerLiteral _resolvedInteger(int value) {
+    IntegerLiteral literal = AstFactory.integer(value);
+    literal.staticType = _typeProvider.intType;
+    return literal;
+  }
+
+  /**
+   * Return a string literal that has been resolved to the correct type.
+   *
+   * @param value the value of the literal
+   * @return a string literal that has been resolved to the correct type
+   */
+  SimpleStringLiteral _resolvedString(String value) {
+    SimpleStringLiteral string = AstFactory.string2(value);
+    string.staticType = _typeProvider.stringType;
+    return string;
+  }
+
+  /**
+   * Return a simple identifier that has been resolved to a variable element with the given type.
+   *
+   * @param type the type of the variable being represented
+   * @param variableName the name of the variable
+   * @return a simple identifier that has been resolved to a variable element with the given type
+   */
+  SimpleIdentifier _resolvedVariable(InterfaceType type, String variableName) {
+    SimpleIdentifier identifier = AstFactory.identifier3(variableName);
+    VariableElementImpl element =
+        ElementFactory.localVariableElement(identifier);
+    element.type = type;
+    identifier.staticElement = element;
+    identifier.staticType = type;
+    return identifier;
+  }
+
+  /**
+   * Set the type of the given parameter to the given type.
+   *
+   * @param parameter the parameter whose type is to be set
+   * @param type the new type of the given parameter
+   */
+  void _setType(FormalParameter parameter, DartType type) {
+    SimpleIdentifier identifier = parameter.identifier;
+    Element element = identifier.staticElement;
+    if (element is! ParameterElement) {
+      element = new ParameterElementImpl.forNode(identifier);
+      identifier.staticElement = element;
+    }
+    (element as ParameterElementImpl).type = type;
+  }
+}
+
+/**
+ * Instances of the class `StaticTypeVerifier` verify that all of the nodes in an AST
+ * structure that should have a static type associated with them do have a static type.
+ */
+class StaticTypeVerifier extends GeneralizingAstVisitor<Object> {
+  /**
+   * A list containing all of the AST Expression nodes that were not resolved.
+   */
+  List<Expression> _unresolvedExpressions = new List<Expression>();
+
+  /**
+   * A list containing all of the AST Expression nodes for which a propagated type was computed but
+   * where that type was not more specific than the static type.
+   */
+  List<Expression> _invalidlyPropagatedExpressions = new List<Expression>();
+
+  /**
+   * A list containing all of the AST TypeName nodes that were not resolved.
+   */
+  List<TypeName> _unresolvedTypes = new List<TypeName>();
+
+  /**
+   * Counter for the number of Expression nodes visited that are resolved.
+   */
+  int _resolvedExpressionCount = 0;
+
+  /**
+   * Counter for the number of Expression nodes visited that have propagated type information.
+   */
+  int _propagatedExpressionCount = 0;
+
+  /**
+   * Counter for the number of TypeName nodes visited that are resolved.
+   */
+  int _resolvedTypeCount = 0;
+
+  /**
+   * Assert that all of the visited nodes have a static type associated with them.
+   */
+  void assertResolved() {
+    if (!_unresolvedExpressions.isEmpty || !_unresolvedTypes.isEmpty) {
+      StringBuffer buffer = new StringBuffer();
+      int unresolvedTypeCount = _unresolvedTypes.length;
+      if (unresolvedTypeCount > 0) {
+        buffer.write("Failed to resolve ");
+        buffer.write(unresolvedTypeCount);
+        buffer.write(" of ");
+        buffer.write(_resolvedTypeCount + unresolvedTypeCount);
+        buffer.writeln(" type names:");
+        for (TypeName identifier in _unresolvedTypes) {
+          buffer.write("  ");
+          buffer.write(identifier.toString());
+          buffer.write(" (");
+          buffer.write(_getFileName(identifier));
+          buffer.write(" : ");
+          buffer.write(identifier.offset);
+          buffer.writeln(")");
+        }
+      }
+      int unresolvedExpressionCount = _unresolvedExpressions.length;
+      if (unresolvedExpressionCount > 0) {
+        buffer.writeln("Failed to resolve ");
+        buffer.write(unresolvedExpressionCount);
+        buffer.write(" of ");
+        buffer.write(_resolvedExpressionCount + unresolvedExpressionCount);
+        buffer.writeln(" expressions:");
+        for (Expression expression in _unresolvedExpressions) {
+          buffer.write("  ");
+          buffer.write(expression.toString());
+          buffer.write(" (");
+          buffer.write(_getFileName(expression));
+          buffer.write(" : ");
+          buffer.write(expression.offset);
+          buffer.writeln(")");
+        }
+      }
+      int invalidlyPropagatedExpressionCount =
+          _invalidlyPropagatedExpressions.length;
+      if (invalidlyPropagatedExpressionCount > 0) {
+        buffer.writeln("Incorrectly propagated ");
+        buffer.write(invalidlyPropagatedExpressionCount);
+        buffer.write(" of ");
+        buffer.write(_propagatedExpressionCount);
+        buffer.writeln(" expressions:");
+        for (Expression expression in _invalidlyPropagatedExpressions) {
+          buffer.write("  ");
+          buffer.write(expression.toString());
+          buffer.write(" [");
+          buffer.write(expression.staticType.displayName);
+          buffer.write(", ");
+          buffer.write(expression.propagatedType.displayName);
+          buffer.writeln("]");
+          buffer.write("    ");
+          buffer.write(_getFileName(expression));
+          buffer.write(" : ");
+          buffer.write(expression.offset);
+          buffer.writeln(")");
+        }
+      }
+      fail(buffer.toString());
+    }
+  }
+
+  @override
+  Object visitBreakStatement(BreakStatement node) => null;
+
+  @override
+  Object visitCommentReference(CommentReference node) => null;
+
+  @override
+  Object visitContinueStatement(ContinueStatement node) => null;
+
+  @override
+  Object visitExportDirective(ExportDirective node) => null;
+
+  @override
+  Object visitExpression(Expression node) {
+    node.visitChildren(this);
+    DartType staticType = node.staticType;
+    if (staticType == null) {
+      _unresolvedExpressions.add(node);
+    } else {
+      _resolvedExpressionCount++;
+      DartType propagatedType = node.propagatedType;
+      if (propagatedType != null) {
+        _propagatedExpressionCount++;
+        if (!propagatedType.isMoreSpecificThan(staticType)) {
+          _invalidlyPropagatedExpressions.add(node);
+        }
+      }
+    }
+    return null;
+  }
+
+  @override
+  Object visitImportDirective(ImportDirective node) => null;
+
+  @override
+  Object visitLabel(Label node) => null;
+
+  @override
+  Object visitLibraryIdentifier(LibraryIdentifier node) => null;
+
+  @override
+  Object visitPrefixedIdentifier(PrefixedIdentifier node) {
+    // In cases where we have a prefixed identifier where the prefix is dynamic,
+    // we don't want to assert that the node will have a type.
+    if (node.staticType == null && node.prefix.staticType.isDynamic) {
+      return null;
+    }
+    return super.visitPrefixedIdentifier(node);
+  }
+
+  @override
+  Object visitSimpleIdentifier(SimpleIdentifier node) {
+    // In cases where identifiers are being used for something other than an
+    // expressions, then they can be ignored.
+    AstNode parent = node.parent;
+    if (parent is MethodInvocation && identical(node, parent.methodName)) {
+      return null;
+    } else if (parent is RedirectingConstructorInvocation &&
+        identical(node, parent.constructorName)) {
+      return null;
+    } else if (parent is SuperConstructorInvocation &&
+        identical(node, parent.constructorName)) {
+      return null;
+    } else if (parent is ConstructorName && identical(node, parent.name)) {
+      return null;
+    } else if (parent is ConstructorFieldInitializer &&
+        identical(node, parent.fieldName)) {
+      return null;
+    } else if (node.staticElement is PrefixElement) {
+      // Prefixes don't have a type.
+      return null;
+    }
+    return super.visitSimpleIdentifier(node);
+  }
+
+  @override
+  Object visitTypeName(TypeName node) {
+    // Note: do not visit children from this node, the child SimpleIdentifier in
+    // TypeName (i.e. "String") does not have a static type defined.
+    if (node.type == null) {
+      _unresolvedTypes.add(node);
+    } else {
+      _resolvedTypeCount++;
+    }
+    return null;
+  }
+
+  String _getFileName(AstNode node) {
+    // TODO (jwren) there are two copies of this method, one here and one in
+    // ResolutionVerifier, they should be resolved into a single method
+    if (node != null) {
+      AstNode root = node.root;
+      if (root is CompilationUnit) {
+        CompilationUnit rootCU = root;
+        if (rootCU.element != null) {
+          return rootCU.element.source.fullName;
+        } else {
+          return "<unknown file- CompilationUnit.getElement() returned null>";
+        }
+      } else {
+        return "<unknown file- CompilationUnit.getRoot() is not a CompilationUnit>";
+      }
+    }
+    return "<unknown file- ASTNode is null>";
+  }
+}
+
+/**
+ * The class `StrictModeTest` contains tests to ensure that the correct errors and warnings
+ * are reported when the analysis engine is run in strict mode.
+ */
+@reflectiveTest
+class StrictModeTest extends ResolverTestCase {
+  void fail_for() {
+    Source source = addSource(r'''
+int f(List<int> list) {
+  num sum = 0;
+  for (num i = 0; i < list.length; i++) {
+    sum += list[i];
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
+  }
+
+  @override
+  void setUp() {
+    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
+    options.hint = false;
+    resetWithOptions(options);
+  }
+
+  void test_assert_is() {
+    Source source = addSource(r'''
+int f(num n) {
+  assert (n is int);
+  return n & 0x0F;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
+  }
+
+  void test_conditional_and_is() {
+    Source source = addSource(r'''
+int f(num n) {
+  return (n is int && n > 0) ? n & 0x0F : 0;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_conditional_is() {
+    Source source = addSource(r'''
+int f(num n) {
+  return (n is int) ? n & 0x0F : 0;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_conditional_isNot() {
+    Source source = addSource(r'''
+int f(num n) {
+  return (n is! int) ? 0 : n & 0x0F;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
+  }
+
+  void test_conditional_or_is() {
+    Source source = addSource(r'''
+int f(num n) {
+  return (n is! int || n < 0) ? 0 : n & 0x0F;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
+  }
+
+  void test_forEach() {
+    Source source = addSource(r'''
+int f(List<int> list) {
+  num sum = 0;
+  for (num n in list) {
+    sum += n & 0x0F;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
+  }
+
+  void test_if_and_is() {
+    Source source = addSource(r'''
+int f(num n) {
+  if (n is int && n > 0) {
+    return n & 0x0F;
+  }
+  return 0;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_if_is() {
+    Source source = addSource(r'''
+int f(num n) {
+  if (n is int) {
+    return n & 0x0F;
+  }
+  return 0;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_if_isNot() {
+    Source source = addSource(r'''
+int f(num n) {
+  if (n is! int) {
+    return 0;
+  } else {
+    return n & 0x0F;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
+  }
+
+  void test_if_isNot_abrupt() {
+    Source source = addSource(r'''
+int f(num n) {
+  if (n is! int) {
+    return 0;
+  }
+  return n & 0x0F;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
+  }
+
+  void test_if_or_is() {
+    Source source = addSource(r'''
+int f(num n) {
+  if (n is! int || n < 0) {
+    return 0;
+  } else {
+    return n & 0x0F;
+  }
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
+  }
+
+  void test_localVar() {
+    Source source = addSource(r'''
+int f() {
+  num n = 1234;
+  return n & 0x0F;
+}''');
+    computeLibrarySourceErrors(source);
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
+  }
+}
+
+@reflectiveTest
+class SubtypeManagerTest extends EngineTestCase {
+  /**
+   * The inheritance manager being tested.
+   */
+  SubtypeManager _subtypeManager;
+
+  /**
+   * The compilation unit element containing all of the types setup in each test.
+   */
+  CompilationUnitElementImpl _definingCompilationUnit;
+
+  @override
+  void setUp() {
+    super.setUp();
+    AnalysisContext context = AnalysisContextFactory.contextWithCore();
+    FileBasedSource source =
+        new FileBasedSource(FileUtilities2.createFile("/test.dart"));
+    _definingCompilationUnit = new CompilationUnitElementImpl("test.dart");
+    _definingCompilationUnit.librarySource =
+        _definingCompilationUnit.source = source;
+    LibraryElementImpl definingLibrary =
+        ElementFactory.library(context, "test");
+    definingLibrary.definingCompilationUnit = _definingCompilationUnit;
+    _subtypeManager = new SubtypeManager();
+  }
+
+  void test_computeAllSubtypes_infiniteLoop() {
+    //
+    // class A extends B
+    // class B extends A
+    //
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    classA.supertype = classB.type;
+    _definingCompilationUnit.types = <ClassElement>[classA, classB];
+    HashSet<ClassElement> subtypesOfA =
+        _subtypeManager.computeAllSubtypes(classA);
+    List<ClassElement> arraySubtypesOfA = new List.from(subtypesOfA);
+    expect(subtypesOfA, hasLength(2));
+    expect(arraySubtypesOfA, unorderedEquals([classA, classB]));
+  }
+
+  void test_computeAllSubtypes_manyRecursiveSubtypes() {
+    //
+    // class A
+    // class B extends A
+    // class C extends B
+    // class D extends B
+    // class E extends B
+    //
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    ClassElementImpl classC = ElementFactory.classElement("C", classB.type);
+    ClassElementImpl classD = ElementFactory.classElement("D", classB.type);
+    ClassElementImpl classE = ElementFactory.classElement("E", classB.type);
+    _definingCompilationUnit.types = <ClassElement>[
+      classA,
+      classB,
+      classC,
+      classD,
+      classE
+    ];
+    HashSet<ClassElement> subtypesOfA =
+        _subtypeManager.computeAllSubtypes(classA);
+    List<ClassElement> arraySubtypesOfA = new List.from(subtypesOfA);
+    HashSet<ClassElement> subtypesOfB =
+        _subtypeManager.computeAllSubtypes(classB);
+    List<ClassElement> arraySubtypesOfB = new List.from(subtypesOfB);
+    expect(subtypesOfA, hasLength(4));
+    expect(arraySubtypesOfA, unorderedEquals([classB, classC, classD, classE]));
+    expect(subtypesOfB, hasLength(3));
+    expect(arraySubtypesOfB, unorderedEquals([classC, classD, classE]));
+  }
+
+  void test_computeAllSubtypes_noSubtypes() {
+    //
+    // class A
+    //
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    _definingCompilationUnit.types = <ClassElement>[classA];
+    HashSet<ClassElement> subtypesOfA =
+        _subtypeManager.computeAllSubtypes(classA);
+    expect(subtypesOfA, hasLength(0));
+  }
+
+  void test_computeAllSubtypes_oneSubtype() {
+    //
+    // class A
+    // class B extends A
+    //
+    ClassElementImpl classA = ElementFactory.classElement2("A");
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type);
+    _definingCompilationUnit.types = <ClassElement>[classA, classB];
+    HashSet<ClassElement> subtypesOfA =
+        _subtypeManager.computeAllSubtypes(classA);
+    List<ClassElement> arraySubtypesOfA = new List.from(subtypesOfA);
+    expect(subtypesOfA, hasLength(1));
+    expect(arraySubtypesOfA, unorderedEquals([classB]));
+  }
+}
+
+@reflectiveTest
+class TypeOverrideManagerTest extends EngineTestCase {
+  void test_exitScope_noScopes() {
+    TypeOverrideManager manager = new TypeOverrideManager();
+    try {
+      manager.exitScope();
+      fail("Expected IllegalStateException");
+    } on IllegalStateException {
+      // Expected
+    }
+  }
+
+  void test_exitScope_oneScope() {
+    TypeOverrideManager manager = new TypeOverrideManager();
+    manager.enterScope();
+    manager.exitScope();
+    try {
+      manager.exitScope();
+      fail("Expected IllegalStateException");
+    } on IllegalStateException {
+      // Expected
+    }
+  }
+
+  void test_exitScope_twoScopes() {
+    TypeOverrideManager manager = new TypeOverrideManager();
+    manager.enterScope();
+    manager.exitScope();
+    manager.enterScope();
+    manager.exitScope();
+    try {
+      manager.exitScope();
+      fail("Expected IllegalStateException");
+    } on IllegalStateException {
+      // Expected
+    }
+  }
+
+  void test_getType_enclosedOverride() {
+    TypeOverrideManager manager = new TypeOverrideManager();
+    LocalVariableElementImpl element =
+        ElementFactory.localVariableElement2("v");
+    InterfaceType type = ElementFactory.classElement2("C").type;
+    manager.enterScope();
+    manager.setType(element, type);
+    manager.enterScope();
+    expect(manager.getType(element), same(type));
+  }
+
+  void test_getType_immediateOverride() {
+    TypeOverrideManager manager = new TypeOverrideManager();
+    LocalVariableElementImpl element =
+        ElementFactory.localVariableElement2("v");
+    InterfaceType type = ElementFactory.classElement2("C").type;
+    manager.enterScope();
+    manager.setType(element, type);
+    expect(manager.getType(element), same(type));
+  }
+
+  void test_getType_noOverride() {
+    TypeOverrideManager manager = new TypeOverrideManager();
+    manager.enterScope();
+    expect(manager.getType(ElementFactory.localVariableElement2("v")), isNull);
+  }
+
+  void test_getType_noScope() {
+    TypeOverrideManager manager = new TypeOverrideManager();
+    expect(manager.getType(ElementFactory.localVariableElement2("v")), isNull);
+  }
+}
+
+@reflectiveTest
+class TypePropagationTest extends ResolverTestCase {
+  void fail_finalPropertyInducingVariable_classMember_instance() {
+    addNamedSource(
+        "/lib.dart",
+        r'''
+class A {
+  final v = 0;
+}''');
+    String code = r'''
+import 'lib.dart';
+f(A a) {
+  return a.v; // marker
+}''';
+    _assertTypeOfMarkedExpression(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+
+  void fail_finalPropertyInducingVariable_classMember_instance_inherited() {
+    addNamedSource(
+        "/lib.dart",
+        r'''
+class A {
+  final v = 0;
+}''');
+    String code = r'''
+import 'lib.dart';
+class B extends A {
+  m() {
+    return v; // marker
+  }
+}''';
+    _assertTypeOfMarkedExpression(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+
+  void fail_finalPropertyInducingVariable_classMember_instance_propagatedTarget() {
+    addNamedSource(
+        "/lib.dart",
+        r'''
+class A {
+  final v = 0;
+}''');
+    String code = r'''
+import 'lib.dart';
+f(p) {
+  if (p is A) {
+    return p.v; // marker
+  }
+}''';
+    _assertTypeOfMarkedExpression(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+
+  void fail_finalPropertyInducingVariable_classMember_static() {
+    addNamedSource(
+        "/lib.dart",
+        r'''
+class A {
+  static final V = 0;
+}''');
+    String code = r'''
+import 'lib.dart';
+f() {
+  return A.V; // marker
+}''';
+    _assertTypeOfMarkedExpression(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+
+  void fail_finalPropertyInducingVariable_topLevelVaraible_prefixed() {
+    addNamedSource("/lib.dart", "final V = 0;");
+    String code = r'''
+import 'lib.dart' as p;
+f() {
+  var v2 = p.V; // marker prefixed
+}''';
+    _assertTypeOfMarkedExpression(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+
+  void fail_finalPropertyInducingVariable_topLevelVaraible_simple() {
+    addNamedSource("/lib.dart", "final V = 0;");
+    String code = r'''
+import 'lib.dart';
+f() {
+  return V; // marker simple
+}''';
+    _assertTypeOfMarkedExpression(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+
+  void fail_mergePropagatedTypesAtJoinPoint_1() {
+    // https://code.google.com/p/dart/issues/detail?id=19929
+    _assertTypeOfMarkedExpression(
+        r'''
+f1(x) {
+  var y = [];
+  if (x) {
+    y = 0;
+  } else {
+    y = '';
+  }
+  // Propagated type is [List] here: incorrect.
+  // Best we can do is [Object]?
+  return y; // marker
+}''',
+        null,
+        typeProvider.dynamicType);
+  }
+
+  void fail_mergePropagatedTypesAtJoinPoint_2() {
+    // https://code.google.com/p/dart/issues/detail?id=19929
+    _assertTypeOfMarkedExpression(
+        r'''
+f2(x) {
+  var y = [];
+  if (x) {
+    y = 0;
+  } else {
+  }
+  // Propagated type is [List] here: incorrect.
+  // Best we can do is [Object]?
+  return y; // marker
+}''',
+        null,
+        typeProvider.dynamicType);
+  }
+
+  void fail_mergePropagatedTypesAtJoinPoint_3() {
+    // https://code.google.com/p/dart/issues/detail?id=19929
+    _assertTypeOfMarkedExpression(
+        r'''
+f4(x) {
+  var y = [];
+  if (x) {
+    y = 0;
+  } else {
+    y = 1.5;
+  }
+  // Propagated type is [List] here: incorrect.
+  // A correct answer is the least upper bound of [int] and [double],
+  // i.e. [num].
+  return y; // marker
+}''',
+        null,
+        typeProvider.numType);
+  }
+
+  void fail_mergePropagatedTypesAtJoinPoint_5() {
+    // https://code.google.com/p/dart/issues/detail?id=19929
+    _assertTypeOfMarkedExpression(
+        r'''
+f6(x,y) {
+  var z = [];
+  if (x || (z = y) < 0) {
+  } else {
+    z = 0;
+  }
+  // Propagated type is [List] here: incorrect.
+  // Best we can do is [Object]?
+  return z; // marker
+}''',
+        null,
+        typeProvider.dynamicType);
+  }
+
+  void fail_mergePropagatedTypesAtJoinPoint_7() {
+    // https://code.google.com/p/dart/issues/detail?id=19929
+    //
+    // In general [continue]s are unsafe for the purposes of
+    // [isAbruptTerminationStatement].
+    //
+    // This is like example 6, but less tricky: the code in the branch that
+    // [continue]s is in effect after the [if].
+    String code = r'''
+f() {
+  var x = 0;
+  var c = false;
+  var d = true;
+  while (d) {
+    if (c) {
+      d = false;
+    } else {
+      x = '';
+      c = true;
+      continue;
+    }
+    x; // marker
+  }
+}''';
+    DartType t = _findMarkedIdentifier(code, "; // marker").propagatedType;
+    expect(typeProvider.intType.isSubtypeOf(t), isTrue);
+    expect(typeProvider.stringType.isSubtypeOf(t), isTrue);
+  }
+
+  void fail_mergePropagatedTypesAtJoinPoint_8() {
+    // https://code.google.com/p/dart/issues/detail?id=19929
+    //
+    // In nested loops [breaks]s are unsafe for the purposes of
+    // [isAbruptTerminationStatement].
+    //
+    // This is a combination of 6 and 7: we use an unlabeled [break]
+    // like a continue for the outer loop / like a labeled [break] to
+    // jump just above the [if].
+    String code = r'''
+f() {
+  var x = 0;
+  var c = false;
+  var d = true;
+  while (d) {
+    while (d) {
+      if (c) {
+        d = false;
+      } else {
+        x = '';
+        c = true;
+        break;
+      }
+      x; // marker
+    }
+  }
+}''';
+    DartType t = _findMarkedIdentifier(code, "; // marker").propagatedType;
+    expect(typeProvider.intType.isSubtypeOf(t), isTrue);
+    expect(typeProvider.stringType.isSubtypeOf(t), isTrue);
+  }
+
+  void fail_propagatedReturnType_functionExpression() {
+    // TODO(scheglov) disabled because we don't resolve function expression
+    String code = r'''
+main() {
+  var v = (() {return 42;})();
+}''';
+    _assertPropagatedAssignedType(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+
+  void test_as() {
+    Source source = addSource(r'''
+class A {
+  bool get g => true;
+}
+A f(var p) {
+  if ((p as A).g) {
+    return p;
+  } else {
+    return null;
+  }
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    ClassDeclaration classA = unit.declarations[0] as ClassDeclaration;
+    InterfaceType typeA = classA.element.type;
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    IfStatement ifStatement = body.block.statements[0] as IfStatement;
+    ReturnStatement statement =
+        (ifStatement.thenStatement as Block).statements[0] as ReturnStatement;
+    SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeA));
+  }
+
+  void test_assert() {
+    Source source = addSource(r'''
+class A {}
+A f(var p) {
+  assert (p is A);
+  return p;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    ClassDeclaration classA = unit.declarations[0] as ClassDeclaration;
+    InterfaceType typeA = classA.element.type;
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[1] as ReturnStatement;
+    SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeA));
+  }
+
+  void test_assignment() {
+    Source source = addSource(r'''
+f() {
+  var v;
+  v = 0;
+  return v;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    FunctionDeclaration function = unit.declarations[0] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[2] as ReturnStatement;
+    SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeProvider.intType));
+  }
+
+  void test_assignment_afterInitializer() {
+    Source source = addSource(r'''
+f() {
+  var v = 0;
+  v = 1.0;
+  return v;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    FunctionDeclaration function = unit.declarations[0] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[2] as ReturnStatement;
+    SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeProvider.doubleType));
+  }
+
+  void test_assignment_null() {
+    String code = r'''
+main() {
+  int v; // declare
+  v = null;
+  return v; // return
+}''';
+    CompilationUnit unit;
+    {
+      Source source = addSource(code);
+      LibraryElement library = resolve2(source);
+      assertNoErrors(source);
+      verify([source]);
+      unit = resolveCompilationUnit(source, library);
+    }
+    {
+      SimpleIdentifier identifier = EngineTestCase.findNode(
+          unit, code, "v; // declare", (node) => node is SimpleIdentifier);
+      expect(identifier.staticType, same(typeProvider.intType));
+      expect(identifier.propagatedType, same(null));
+    }
+    {
+      SimpleIdentifier identifier = EngineTestCase.findNode(
+          unit, code, "v = null;", (node) => node is SimpleIdentifier);
+      expect(identifier.staticType, same(typeProvider.intType));
+      expect(identifier.propagatedType, same(null));
+    }
+    {
+      SimpleIdentifier identifier = EngineTestCase.findNode(
+          unit, code, "v; // return", (node) => node is SimpleIdentifier);
+      expect(identifier.staticType, same(typeProvider.intType));
+      expect(identifier.propagatedType, same(null));
+    }
+  }
+
+  void test_CanvasElement_getContext() {
+    String code = r'''
+import 'dart:html';
+main(CanvasElement canvas) {
+  var context = canvas.getContext('2d');
+}''';
+    Source source = addSource(code);
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    SimpleIdentifier identifier = EngineTestCase.findNode(
+        unit, code, "context", (node) => node is SimpleIdentifier);
+    expect(identifier.propagatedType.name, "CanvasRenderingContext2D");
+  }
+
+  void test_forEach() {
+    String code = r'''
+main() {
+  var list = <String> [];
+  for (var e in list) {
+    e;
+  }
+}''';
+    Source source = addSource(code);
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    InterfaceType stringType = typeProvider.stringType;
+    // in the declaration
+    {
+      SimpleIdentifier identifier = EngineTestCase.findNode(
+          unit, code, "e in", (node) => node is SimpleIdentifier);
+      expect(identifier.propagatedType, same(stringType));
+    }
+    // in the loop body
+    {
+      SimpleIdentifier identifier = EngineTestCase.findNode(
+          unit, code, "e;", (node) => node is SimpleIdentifier);
+      expect(identifier.propagatedType, same(stringType));
+    }
+  }
+
+  void test_forEach_async() {
+    String code = r'''
+import 'dart:async';
+f(Stream<String> stream) async {
+  await for (var e in stream) {
+    e;
+  }
+}''';
+    Source source = addSource(code);
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    InterfaceType stringType = typeProvider.stringType;
+    // in the declaration
+    {
+      SimpleIdentifier identifier = EngineTestCase.findNode(
+          unit, code, "e in", (node) => node is SimpleIdentifier);
+      expect(identifier.propagatedType, same(stringType));
+    }
+    // in the loop body
+    {
+      SimpleIdentifier identifier = EngineTestCase.findNode(
+          unit, code, "e;", (node) => node is SimpleIdentifier);
+      expect(identifier.propagatedType, same(stringType));
+    }
+  }
+
+  void test_functionExpression_asInvocationArgument() {
+    String code = r'''
+class MyMap<K, V> {
+  forEach(f(K key, V value)) {}
+}
+f(MyMap<int, String> m) {
+  m.forEach((k, v) {
+    k;
+    v;
+  });
+}''';
+    Source source = addSource(code);
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    // k
+    DartType intType = typeProvider.intType;
+    FormalParameter kParameter = EngineTestCase.findNode(
+        unit, code, "k, ", (node) => node is SimpleFormalParameter);
+    expect(kParameter.identifier.propagatedType, same(intType));
+    SimpleIdentifier kIdentifier = EngineTestCase.findNode(
+        unit, code, "k;", (node) => node is SimpleIdentifier);
+    expect(kIdentifier.propagatedType, same(intType));
+    expect(kIdentifier.staticType, same(typeProvider.dynamicType));
+    // v
+    DartType stringType = typeProvider.stringType;
+    FormalParameter vParameter = EngineTestCase.findNode(
+        unit, code, "v)", (node) => node is SimpleFormalParameter);
+    expect(vParameter.identifier.propagatedType, same(stringType));
+    SimpleIdentifier vIdentifier = EngineTestCase.findNode(
+        unit, code, "v;", (node) => node is SimpleIdentifier);
+    expect(vIdentifier.propagatedType, same(stringType));
+    expect(vIdentifier.staticType, same(typeProvider.dynamicType));
+  }
+
+  void test_functionExpression_asInvocationArgument_fromInferredInvocation() {
+    String code = r'''
+class MyMap<K, V> {
+  forEach(f(K key, V value)) {}
+}
+f(MyMap<int, String> m) {
+  var m2 = m;
+  m2.forEach((k, v) {});
+}''';
+    Source source = addSource(code);
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    // k
+    DartType intType = typeProvider.intType;
+    FormalParameter kParameter = EngineTestCase.findNode(
+        unit, code, "k, ", (node) => node is SimpleFormalParameter);
+    expect(kParameter.identifier.propagatedType, same(intType));
+    // v
+    DartType stringType = typeProvider.stringType;
+    FormalParameter vParameter = EngineTestCase.findNode(
+        unit, code, "v)", (node) => node is SimpleFormalParameter);
+    expect(vParameter.identifier.propagatedType, same(stringType));
+  }
+
+  void test_functionExpression_asInvocationArgument_functionExpressionInvocation() {
+    String code = r'''
+main() {
+  (f(String value)) {} ((v) {
+    v;
+  });
+}''';
+    Source source = addSource(code);
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    // v
+    DartType dynamicType = typeProvider.dynamicType;
+    DartType stringType = typeProvider.stringType;
+    FormalParameter vParameter = EngineTestCase.findNode(
+        unit, code, "v)", (node) => node is FormalParameter);
+    expect(vParameter.identifier.propagatedType, same(stringType));
+    expect(vParameter.identifier.staticType, same(dynamicType));
+    SimpleIdentifier vIdentifier = EngineTestCase.findNode(
+        unit, code, "v;", (node) => node is SimpleIdentifier);
+    expect(vIdentifier.propagatedType, same(stringType));
+    expect(vIdentifier.staticType, same(dynamicType));
+  }
+
+  void test_functionExpression_asInvocationArgument_keepIfLessSpecific() {
+    String code = r'''
+class MyList {
+  forEach(f(Object value)) {}
+}
+f(MyList list) {
+  list.forEach((int v) {
+    v;
+  });
+}''';
+    Source source = addSource(code);
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    // v
+    DartType intType = typeProvider.intType;
+    FormalParameter vParameter = EngineTestCase.findNode(
+        unit, code, "v)", (node) => node is SimpleFormalParameter);
+    expect(vParameter.identifier.propagatedType, same(null));
+    expect(vParameter.identifier.staticType, same(intType));
+    SimpleIdentifier vIdentifier = EngineTestCase.findNode(
+        unit, code, "v;", (node) => node is SimpleIdentifier);
+    expect(vIdentifier.staticType, same(intType));
+    expect(vIdentifier.propagatedType, same(null));
+  }
+
+  void test_functionExpression_asInvocationArgument_notSubtypeOfStaticType() {
+    String code = r'''
+class A {
+  m(void f(int i)) {}
+}
+x() {
+  A a = new A();
+  a.m(() => 0);
+}''';
+    Source source = addSource(code);
+    LibraryElement library = resolve2(source);
+    assertErrors(source, [StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE]);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    // () => 0
+    FunctionExpression functionExpression = EngineTestCase.findNode(
+        unit, code, "() => 0)", (node) => node is FunctionExpression);
+    expect((functionExpression.staticType as FunctionType).parameters.length,
+        same(0));
+    expect(functionExpression.propagatedType, same(null));
+  }
+
+  void test_functionExpression_asInvocationArgument_replaceIfMoreSpecific() {
+    String code = r'''
+class MyList<E> {
+  forEach(f(E value)) {}
+}
+f(MyList<String> list) {
+  list.forEach((Object v) {
+    v;
+  });
+}''';
+    Source source = addSource(code);
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    // v
+    DartType stringType = typeProvider.stringType;
+    FormalParameter vParameter = EngineTestCase.findNode(
+        unit, code, "v)", (node) => node is SimpleFormalParameter);
+    expect(vParameter.identifier.propagatedType, same(stringType));
+    expect(vParameter.identifier.staticType, same(typeProvider.objectType));
+    SimpleIdentifier vIdentifier = EngineTestCase.findNode(
+        unit, code, "v;", (node) => node is SimpleIdentifier);
+    expect(vIdentifier.propagatedType, same(stringType));
+  }
+
+  void test_Future_then() {
+    String code = r'''
+import 'dart:async';
+main(Future<int> firstFuture) {
+  firstFuture.then((p1) {
+    return 1.0;
+  }).then((p2) {
+    return new Future<String>.value('str');
+  }).then((p3) {
+  });
+}''';
+    Source source = addSource(code);
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    // p1
+    FormalParameter p1 = EngineTestCase.findNode(
+        unit, code, "p1) {", (node) => node is SimpleFormalParameter);
+    expect(p1.identifier.propagatedType, same(typeProvider.intType));
+    // p2
+    FormalParameter p2 = EngineTestCase.findNode(
+        unit, code, "p2) {", (node) => node is SimpleFormalParameter);
+    expect(p2.identifier.propagatedType, same(typeProvider.doubleType));
+    // p3
+    FormalParameter p3 = EngineTestCase.findNode(
+        unit, code, "p3) {", (node) => node is SimpleFormalParameter);
+    expect(p3.identifier.propagatedType, same(typeProvider.stringType));
+  }
+
+  void test_initializer() {
+    Source source = addSource(r'''
+f() {
+  var v = 0;
+  return v;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    FunctionDeclaration function = unit.declarations[0] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    NodeList<Statement> statements = body.block.statements;
+    // Type of 'v' in declaration.
+    {
+      VariableDeclarationStatement statement =
+          statements[0] as VariableDeclarationStatement;
+      SimpleIdentifier variableName = statement.variables.variables[0].name;
+      expect(variableName.staticType, same(typeProvider.dynamicType));
+      expect(variableName.propagatedType, same(typeProvider.intType));
+    }
+    // Type of 'v' in reference.
+    {
+      ReturnStatement statement = statements[1] as ReturnStatement;
+      SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+      expect(variableName.propagatedType, same(typeProvider.intType));
+    }
+  }
+
+  void test_initializer_dereference() {
+    Source source = addSource(r'''
+f() {
+  var v = 'String';
+  v.
+}''');
+    LibraryElement library = resolve2(source);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    FunctionDeclaration function = unit.declarations[0] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ExpressionStatement statement =
+        body.block.statements[1] as ExpressionStatement;
+    PrefixedIdentifier invocation = statement.expression as PrefixedIdentifier;
+    SimpleIdentifier variableName = invocation.prefix;
+    expect(variableName.propagatedType, same(typeProvider.stringType));
+  }
+
+  void test_initializer_hasStaticType() {
+    Source source = addSource(r'''
+f() {
+  int v = 0;
+  return v;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    FunctionDeclaration function = unit.declarations[0] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    NodeList<Statement> statements = body.block.statements;
+    // Type of 'v' in declaration.
+    {
+      VariableDeclarationStatement statement =
+          statements[0] as VariableDeclarationStatement;
+      SimpleIdentifier variableName = statement.variables.variables[0].name;
+      expect(variableName.staticType, same(typeProvider.intType));
+      expect(variableName.propagatedType, isNull);
+    }
+    // Type of 'v' in reference.
+    {
+      ReturnStatement statement = statements[1] as ReturnStatement;
+      SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+      expect(variableName.staticType, same(typeProvider.intType));
+      expect(variableName.propagatedType, isNull);
+    }
+  }
+
+  void test_initializer_hasStaticType_parameterized() {
+    Source source = addSource(r'''
+f() {
+  List<int> v = <int>[];
+  return v;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    FunctionDeclaration function = unit.declarations[0] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    NodeList<Statement> statements = body.block.statements;
+    // Type of 'v' in declaration.
+    {
+      VariableDeclarationStatement statement =
+          statements[0] as VariableDeclarationStatement;
+      SimpleIdentifier variableName = statement.variables.variables[0].name;
+      expect(variableName.staticType, isNotNull);
+      expect(variableName.propagatedType, isNull);
+    }
+    // Type of 'v' in reference.
+    {
+      ReturnStatement statement = statements[1] as ReturnStatement;
+      SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+      expect(variableName.staticType, isNotNull);
+      expect(variableName.propagatedType, isNull);
+    }
+  }
+
+  void test_initializer_null() {
+    String code = r'''
+main() {
+  int v = null;
+  return v; // marker
+}''';
+    CompilationUnit unit;
+    {
+      Source source = addSource(code);
+      LibraryElement library = resolve2(source);
+      assertNoErrors(source);
+      verify([source]);
+      unit = resolveCompilationUnit(source, library);
+    }
+    {
+      SimpleIdentifier identifier = EngineTestCase.findNode(
+          unit, code, "v = null;", (node) => node is SimpleIdentifier);
+      expect(identifier.staticType, same(typeProvider.intType));
+      expect(identifier.propagatedType, same(null));
+    }
+    {
+      SimpleIdentifier identifier = EngineTestCase.findNode(
+          unit, code, "v; // marker", (node) => node is SimpleIdentifier);
+      expect(identifier.staticType, same(typeProvider.intType));
+      expect(identifier.propagatedType, same(null));
+    }
+  }
+
+  void test_is_conditional() {
+    Source source = addSource(r'''
+class A {}
+A f(var p) {
+  return (p is A) ? p : null;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    ClassDeclaration classA = unit.declarations[0] as ClassDeclaration;
+    InterfaceType typeA = classA.element.type;
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[0] as ReturnStatement;
+    ConditionalExpression conditional =
+        statement.expression as ConditionalExpression;
+    SimpleIdentifier variableName =
+        conditional.thenExpression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeA));
+  }
+
+  void test_is_if() {
+    Source source = addSource(r'''
+class A {}
+A f(var p) {
+  if (p is A) {
+    return p;
+  } else {
+    return null;
+  }
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    // prepare A
+    InterfaceType typeA;
+    {
+      ClassDeclaration classA = unit.declarations[0] as ClassDeclaration;
+      typeA = classA.element.type;
+    }
+    // verify "f"
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    IfStatement ifStatement = body.block.statements[0] as IfStatement;
+    // "p is A"
+    {
+      IsExpression isExpression = ifStatement.condition;
+      SimpleIdentifier variableName = isExpression.expression;
+      expect(variableName.propagatedType, isNull);
+    }
+    // "return p;"
+    {
+      ReturnStatement statement =
+          (ifStatement.thenStatement as Block).statements[0] as ReturnStatement;
+      SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+      expect(variableName.propagatedType, same(typeA));
+    }
+  }
+
+  void test_is_if_lessSpecific() {
+    Source source = addSource(r'''
+class A {}
+A f(A p) {
+  if (p is String) {
+    return p;
+  } else {
+    return null;
+  }
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+//    ClassDeclaration classA = (ClassDeclaration) unit.getDeclarations().get(0);
+//    InterfaceType typeA = classA.getElement().getType();
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    IfStatement ifStatement = body.block.statements[0] as IfStatement;
+    ReturnStatement statement =
+        (ifStatement.thenStatement as Block).statements[0] as ReturnStatement;
+    SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(null));
+  }
+
+  void test_is_if_logicalAnd() {
+    Source source = addSource(r'''
+class A {}
+A f(var p) {
+  if (p is A && p != null) {
+    return p;
+  } else {
+    return null;
+  }
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    ClassDeclaration classA = unit.declarations[0] as ClassDeclaration;
+    InterfaceType typeA = classA.element.type;
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    IfStatement ifStatement = body.block.statements[0] as IfStatement;
+    ReturnStatement statement =
+        (ifStatement.thenStatement as Block).statements[0] as ReturnStatement;
+    SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeA));
+  }
+
+  void test_is_postConditional() {
+    Source source = addSource(r'''
+class A {}
+A f(var p) {
+  A a = (p is A) ? p : throw null;
+  return p;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    ClassDeclaration classA = unit.declarations[0] as ClassDeclaration;
+    InterfaceType typeA = classA.element.type;
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[1] as ReturnStatement;
+    SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeA));
+  }
+
+  void test_is_postIf() {
+    Source source = addSource(r'''
+class A {}
+A f(var p) {
+  if (p is A) {
+    A a = p;
+  } else {
+    return null;
+  }
+  return p;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    ClassDeclaration classA = unit.declarations[0] as ClassDeclaration;
+    InterfaceType typeA = classA.element.type;
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[1] as ReturnStatement;
+    SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeA));
+  }
+
+  void test_is_subclass() {
+    Source source = addSource(r'''
+class A {}
+class B extends A {
+  B m() => this;
+}
+A f(A p) {
+  if (p is B) {
+    return p.m();
+  }
+  return p;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    FunctionDeclaration function = unit.declarations[2] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    IfStatement ifStatement = body.block.statements[0] as IfStatement;
+    ReturnStatement statement =
+        (ifStatement.thenStatement as Block).statements[0] as ReturnStatement;
+    MethodInvocation invocation = statement.expression as MethodInvocation;
+    expect(invocation.methodName.staticElement, isNotNull);
+    expect(invocation.methodName.propagatedElement, isNull);
+  }
+
+  void test_is_while() {
+    Source source = addSource(r'''
+class A {}
+A f(var p) {
+  while (p is A) {
+    return p;
+  }
+  return p;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    ClassDeclaration classA = unit.declarations[0] as ClassDeclaration;
+    InterfaceType typeA = classA.element.type;
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    WhileStatement whileStatement = body.block.statements[0] as WhileStatement;
+    ReturnStatement statement =
+        (whileStatement.body as Block).statements[0] as ReturnStatement;
+    SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeA));
+  }
+
+  void test_isNot_conditional() {
+    Source source = addSource(r'''
+class A {}
+A f(var p) {
+  return (p is! A) ? null : p;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    ClassDeclaration classA = unit.declarations[0] as ClassDeclaration;
+    InterfaceType typeA = classA.element.type;
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[0] as ReturnStatement;
+    ConditionalExpression conditional =
+        statement.expression as ConditionalExpression;
+    SimpleIdentifier variableName =
+        conditional.elseExpression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeA));
+  }
+
+  void test_isNot_if() {
+    Source source = addSource(r'''
+class A {}
+A f(var p) {
+  if (p is! A) {
+    return null;
+  } else {
+    return p;
+  }
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    ClassDeclaration classA = unit.declarations[0] as ClassDeclaration;
+    InterfaceType typeA = classA.element.type;
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    IfStatement ifStatement = body.block.statements[0] as IfStatement;
+    ReturnStatement statement =
+        (ifStatement.elseStatement as Block).statements[0] as ReturnStatement;
+    SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeA));
+  }
+
+  void test_isNot_if_logicalOr() {
+    Source source = addSource(r'''
+class A {}
+A f(var p) {
+  if (p is! A || null == p) {
+    return null;
+  } else {
+    return p;
+  }
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    ClassDeclaration classA = unit.declarations[0] as ClassDeclaration;
+    InterfaceType typeA = classA.element.type;
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    IfStatement ifStatement = body.block.statements[0] as IfStatement;
+    ReturnStatement statement =
+        (ifStatement.elseStatement as Block).statements[0] as ReturnStatement;
+    SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeA));
+  }
+
+  void test_isNot_postConditional() {
+    Source source = addSource(r'''
+class A {}
+A f(var p) {
+  A a = (p is! A) ? throw null : p;
+  return p;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    ClassDeclaration classA = unit.declarations[0] as ClassDeclaration;
+    InterfaceType typeA = classA.element.type;
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[1] as ReturnStatement;
+    SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeA));
+  }
+
+  void test_isNot_postIf() {
+    Source source = addSource(r'''
+class A {}
+A f(var p) {
+  if (p is! A) {
+    return null;
+  }
+  return p;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    ClassDeclaration classA = unit.declarations[0] as ClassDeclaration;
+    InterfaceType typeA = classA.element.type;
+    FunctionDeclaration function = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[1] as ReturnStatement;
+    SimpleIdentifier variableName = statement.expression as SimpleIdentifier;
+    expect(variableName.propagatedType, same(typeA));
+  }
+
+  void test_issue20904BuggyTypePromotionAtIfJoin_5() {
+    // https://code.google.com/p/dart/issues/detail?id=20904
+    //
+    // This is not an example of the 20904 bug, but rather,
+    // an example of something that one obvious fix changes inadvertently: we
+    // want to avoid using type information from is-checks when it
+    // loses precision. I can't see how to get a bad hint this way, since
+    // it seems the propagated type is not used to generate hints when a
+    // more precise type would cause no hint. For example, for code like the
+    // following, when the propagated type of [x] is [A] -- as happens for the
+    // fix these tests aim to warn against -- there is no warning for
+
+    // calling a method defined on [B] but not [A] (there aren't any, but
+    // pretend), but there is for calling a method not defined on either.
+    // By not overriding the propagated type via an is-check that loses
+    // precision, we get more precise completion under an is-check. However,
+    // I can only imagine strange code would make use of this feature.
+    //
+    // Here the is-check improves precision, so we use it.
+    String code = r'''
+class A {}
+class B extends A {}
+f() {
+  var a = new A();
+  var b = new B();
+  b; // B
+  if (a is B) {
+    return a; // marker
+  }
+}''';
+    DartType tB = _findMarkedIdentifier(code, "; // B").propagatedType;
+    _assertTypeOfMarkedExpression(code, null, tB);
+  }
+
+  void test_issue20904BuggyTypePromotionAtIfJoin_6() {
+    // https://code.google.com/p/dart/issues/detail?id=20904
+    //
+    // The other half of the *_5() test.
+    //
+    // Here the is-check loses precision, so we don't use it.
+    String code = r'''
+class A {}
+class B extends A {}
+f() {
+  var b = new B();
+  b; // B
+  if (b is A) {
+    return b; // marker
+  }
+}''';
+    DartType tB = _findMarkedIdentifier(code, "; // B").propagatedType;
+    _assertTypeOfMarkedExpression(code, null, tB);
+  }
+
+  void test_listLiteral_different() {
+    Source source = addSource(r'''
+f() {
+  var v = [0, '1', 2];
+  return v[2];
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    FunctionDeclaration function = unit.declarations[0] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[1] as ReturnStatement;
+    IndexExpression indexExpression = statement.expression as IndexExpression;
+    expect(indexExpression.propagatedType, isNull);
+  }
+
+  void test_listLiteral_same() {
+    Source source = addSource(r'''
+f() {
+  var v = [0, 1, 2];
+  return v[2];
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    FunctionDeclaration function = unit.declarations[0] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[1] as ReturnStatement;
+    IndexExpression indexExpression = statement.expression as IndexExpression;
+    expect(indexExpression.propagatedType, isNull);
+    Expression v = indexExpression.target;
+    InterfaceType propagatedType = v.propagatedType as InterfaceType;
+    expect(propagatedType.element, same(typeProvider.listType.element));
+    List<DartType> typeArguments = propagatedType.typeArguments;
+    expect(typeArguments, hasLength(1));
+    expect(typeArguments[0], same(typeProvider.dynamicType));
+  }
+
+  void test_mapLiteral_different() {
+    Source source = addSource(r'''
+f() {
+  var v = {'0' : 0, 1 : '1', '2' : 2};
+  return v;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    FunctionDeclaration function = unit.declarations[0] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[1] as ReturnStatement;
+    SimpleIdentifier identifier = statement.expression as SimpleIdentifier;
+    InterfaceType propagatedType = identifier.propagatedType as InterfaceType;
+    expect(propagatedType.element, same(typeProvider.mapType.element));
+    List<DartType> typeArguments = propagatedType.typeArguments;
+    expect(typeArguments, hasLength(2));
+    expect(typeArguments[0], same(typeProvider.dynamicType));
+    expect(typeArguments[1], same(typeProvider.dynamicType));
+  }
+
+  void test_mapLiteral_same() {
+    Source source = addSource(r'''
+f() {
+  var v = {'a' : 0, 'b' : 1, 'c' : 2};
+  return v;
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    FunctionDeclaration function = unit.declarations[0] as FunctionDeclaration;
+    BlockFunctionBody body =
+        function.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[1] as ReturnStatement;
+    SimpleIdentifier identifier = statement.expression as SimpleIdentifier;
+    InterfaceType propagatedType = identifier.propagatedType as InterfaceType;
+    expect(propagatedType.element, same(typeProvider.mapType.element));
+    List<DartType> typeArguments = propagatedType.typeArguments;
+    expect(typeArguments, hasLength(2));
+    expect(typeArguments[0], same(typeProvider.dynamicType));
+    expect(typeArguments[1], same(typeProvider.dynamicType));
+  }
+
+  void test_mergePropagatedTypes_afterIfThen_different() {
+    String code = r'''
+main() {
+  var v = 0;
+  if (v != null) {
+    v = '';
+  }
+  return v;
+}''';
+    {
+      SimpleIdentifier identifier = _findMarkedIdentifier(code, "v;");
+      expect(identifier.propagatedType, null);
+    }
+    {
+      SimpleIdentifier identifier = _findMarkedIdentifier(code, "v = '';");
+      expect(identifier.propagatedType, typeProvider.stringType);
+    }
+  }
+
+  void test_mergePropagatedTypes_afterIfThen_same() {
+    _assertTypeOfMarkedExpression(
+        r'''
+main() {
+  var v = 1;
+  if (v != null) {
+    v = 2;
+  }
+  return v; // marker
+}''',
+        null,
+        typeProvider.intType);
+  }
+
+  void test_mergePropagatedTypes_afterIfThenElse_different() {
+    _assertTypeOfMarkedExpression(
+        r'''
+main() {
+  var v = 1;
+  if (v != null) {
+    v = 2;
+  } else {
+    v = '3';
+  }
+  return v; // marker
+}''',
+        null,
+        null);
+  }
+
+  void test_mergePropagatedTypes_afterIfThenElse_same() {
+    _assertTypeOfMarkedExpression(
+        r'''
+main() {
+  var v = 1;
+  if (v != null) {
+    v = 2;
+  } else {
+    v = 3;
+  }
+  return v; // marker
+}''',
+        null,
+        typeProvider.intType);
+  }
+
+  void test_mergePropagatedTypesAtJoinPoint_4() {
+    // https://code.google.com/p/dart/issues/detail?id=19929
+    _assertTypeOfMarkedExpression(
+        r'''
+f5(x) {
+  var y = [];
+  if (x) {
+    y = 0;
+  } else {
+    return y;
+  }
+  // Propagated type is [int] here: correct.
+  return y; // marker
+}''',
+        null,
+        typeProvider.intType);
+  }
+
+  void test_mutatedOutsideScope() {
+    // https://code.google.com/p/dart/issues/detail?id=22732
+    Source source = addSource(r'''
+class Base {
+}
+
+class Derived extends Base {
+  get y => null;
+}
+
+class C {
+  void f() {
+    Base x = null;
+    if (x is Derived) {
+      print(x.y); // BAD
+    }
+    x = null;
+  }
+}
+
+void g() {
+  Base x = null;
+  if (x is Derived) {
+    print(x.y); // GOOD
+  }
+  x = null;
+}''');
+    computeLibrarySourceErrors(source);
+    assertNoErrors(source);
+  }
+
+  void test_objectMethodOnDynamicExpression_doubleEquals() {
+    // https://code.google.com/p/dart/issues/detail?id=20342
+    //
+    // This was not actually part of Issue 20342, since the spec specifies a
+    // static type of [bool] for [==] comparison and the implementation
+    // was already consistent with the spec there. But, it's another
+    // [Object] method, so it's included here.
+    _assertTypeOfMarkedExpression(
+        r'''
+f1(x) {
+  var v = (x == x);
+  return v; // marker
+}''',
+        null,
+        typeProvider.boolType);
+  }
+
+  void test_objectMethodOnDynamicExpression_hashCode() {
+    // https://code.google.com/p/dart/issues/detail?id=20342
+    _assertTypeOfMarkedExpression(
+        r'''
+f1(x) {
+  var v = x.hashCode;
+  return v; // marker
+}''',
+        null,
+        typeProvider.intType);
+  }
+
+  void test_objectMethodOnDynamicExpression_runtimeType() {
+    // https://code.google.com/p/dart/issues/detail?id=20342
+    _assertTypeOfMarkedExpression(
+        r'''
+f1(x) {
+  var v = x.runtimeType;
+  return v; // marker
+}''',
+        null,
+        typeProvider.typeType);
+  }
+
+  void test_objectMethodOnDynamicExpression_toString() {
+    // https://code.google.com/p/dart/issues/detail?id=20342
+    _assertTypeOfMarkedExpression(
+        r'''
+f1(x) {
+  var v = x.toString();
+  return v; // marker
+}''',
+        null,
+        typeProvider.stringType);
+  }
+
+  void test_propagatedReturnType_function_hasReturnType_returnsNull() {
+    String code = r'''
+String f() => null;
+main() {
+  var v = f();
+}''';
+    _assertPropagatedAssignedType(
+        code, typeProvider.dynamicType, typeProvider.stringType);
+  }
+
+  void test_propagatedReturnType_function_lessSpecificStaticReturnType() {
+    String code = r'''
+Object f() => 42;
+main() {
+  var v = f();
+}''';
+    _assertPropagatedAssignedType(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+
+  void test_propagatedReturnType_function_moreSpecificStaticReturnType() {
+    String code = r'''
+int f(v) => (v as num);
+main() {
+  var v = f(3);
+}''';
+    _assertPropagatedAssignedType(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+
+  void test_propagatedReturnType_function_noReturnTypeName_blockBody_multipleReturns() {
+    String code = r'''
+f() {
+  if (true) return 0;
+  return 1.0;
+}
+main() {
+  var v = f();
+}''';
+    _assertPropagatedAssignedType(
+        code, typeProvider.dynamicType, typeProvider.numType);
+  }
+
+  void test_propagatedReturnType_function_noReturnTypeName_blockBody_oneReturn() {
+    String code = r'''
+f() {
+  var z = 42;
+  return z;
+}
+main() {
+  var v = f();
+}''';
+    _assertPropagatedAssignedType(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+
+  void test_propagatedReturnType_function_noReturnTypeName_expressionBody() {
+    String code = r'''
+f() => 42;
+main() {
+  var v = f();
+}''';
+    _assertPropagatedAssignedType(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+
+  void test_propagatedReturnType_localFunction() {
+    String code = r'''
+main() {
+  f() => 42;
+  var v = f();
+}''';
+    _assertPropagatedAssignedType(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+
+  void test_query() {
+    Source source = addSource(r'''
+import 'dart:html';
+
+main() {
+  var v1 = query('a');
+  var v2 = query('A');
+  var v3 = query('body:active');
+  var v4 = query('button[foo="bar"]');
+  var v5 = query('div.class');
+  var v6 = query('input#id');
+  var v7 = query('select#id');
+  // invocation of method
+  var m1 = document.query('div');
+ // unsupported currently
+  var b1 = query('noSuchTag');
+  var b2 = query('DART_EDITOR_NO_SUCH_TYPE');
+  var b3 = query('body div');
+  return [v1, v2, v3, v4, v5, v6, v7, m1, b1, b2, b3];
+}''');
+    LibraryElement library = resolve2(source);
+    assertNoErrors(source);
+    verify([source]);
+    CompilationUnit unit = resolveCompilationUnit(source, library);
+    FunctionDeclaration main = unit.declarations[0] as FunctionDeclaration;
+    BlockFunctionBody body = main.functionExpression.body as BlockFunctionBody;
+    ReturnStatement statement = body.block.statements[11] as ReturnStatement;
+    NodeList<Expression> elements =
+        (statement.expression as ListLiteral).elements;
+    expect(elements[0].propagatedType.name, "AnchorElement");
+    expect(elements[1].propagatedType.name, "AnchorElement");
+    expect(elements[2].propagatedType.name, "BodyElement");
+    expect(elements[3].propagatedType.name, "ButtonElement");
+    expect(elements[4].propagatedType.name, "DivElement");
+    expect(elements[5].propagatedType.name, "InputElement");
+    expect(elements[6].propagatedType.name, "SelectElement");
+    expect(elements[7].propagatedType.name, "DivElement");
+    expect(elements[8].propagatedType.name, "Element");
+    expect(elements[9].propagatedType.name, "Element");
+    expect(elements[10].propagatedType.name, "Element");
+  }
+}
+
+@reflectiveTest
+class StrongModeTypePropagationTest extends ResolverTestCase {
+  @override
+  void setUp() {
+    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
+    options.strongMode = true;
+    resetWithOptions(options);
+  }
+
+  void test_localVariableInference_constant() {
+    String code = r'''
+main() {
+  var v = 3;
+  return v; // marker
+}''';
+    _assertPropagatedAssignedType(code, typeProvider.intType, null);
+    _assertTypeOfMarkedExpression(code, typeProvider.intType, null);
+  }
+
+  void test_localVariableInference_transitive_local() {
+    String code = r'''
+main() {
+  var x = 3;
+  var v = x;
+  return v; // marker
+}''';
+    _assertPropagatedAssignedType(code, typeProvider.intType, null);
+    _assertTypeOfMarkedExpression(code, typeProvider.intType, null);
+  }
+
+  void test_localVariableInference_transitive_list_local() {
+    String code = r'''
+main() {
+  var x = <int>[3];
+  var v = x[0];
+  return v; // marker
+}''';
+    _assertPropagatedAssignedType(code, typeProvider.intType, null);
+    _assertTypeOfMarkedExpression(code, typeProvider.intType, null);
+  }
+
+  void test_localVariableInference_transitive_toplevel_lexical() {
+    String code = r'''
+int x = 3;
+main() {
+  var v = x;
+  return v; // marker
+}
+''';
+    _assertPropagatedAssignedType(code, typeProvider.intType, null);
+    _assertTypeOfMarkedExpression(code, typeProvider.intType, null);
+  }
+
+  void test_localVariableInference_transitive_toplevel_reversed() {
+    String code = r'''
+main() {
+  var v = x;
+  return v; // marker
+}
+int x = 3;
+''';
+    _assertPropagatedAssignedType(code, typeProvider.intType, null);
+    _assertTypeOfMarkedExpression(code, typeProvider.intType, null);
+  }
+
+  void fail_localVariableInference_transitive_toplevel_inferred_lexical() {
+    String code = r'''
+final x = 3;
+main() {
+  var v = x;
+  return v; // marker
+}
+''';
+    _assertPropagatedAssignedType(code, typeProvider.intType, null);
+    _assertTypeOfMarkedExpression(code, typeProvider.intType, null);
+  }
+
+  void fail_localVariableInference_transitive_toplevel_inferred_reversed() {
+    String code = r'''
+main() {
+  var v = x;
+  return v; // marker
+}
+final x = 3;
+''';
+    _assertPropagatedAssignedType(code, typeProvider.intType, null);
+    _assertTypeOfMarkedExpression(code, typeProvider.intType, null);
+  }
+
+  void test_localVariableInference_transitive_field_lexical() {
+    String code = r'''
+class A {
+  int x = 3;
+  f() {
+    var v = x;
+    return v; // marker
+  }
+}
+main() {
+}
+''';
+    _assertPropagatedAssignedType(code, typeProvider.intType, null);
+    _assertTypeOfMarkedExpression(code, typeProvider.intType, null);
+  }
+
+  void test_localVariableInference_transitive_field_reversed() {
+    String code = r'''
+class A {
+  f() {
+    var v = x;
+    return v; // marker
+  }
+  int x = 3;
+}
+main() {
+}
+''';
+    _assertPropagatedAssignedType(code, typeProvider.intType, null);
+    _assertTypeOfMarkedExpression(code, typeProvider.intType, null);
+  }
+
+  void fail_localVariableInference_transitive_field_inferred_lexical() {
+    String code = r'''
+class A {
+  final x = 3;
+  f() {
+    var v = x;
+    return v; // marker
+  }
+}
+main() {
+}
+''';
+    _assertPropagatedAssignedType(code, typeProvider.intType, null);
+    _assertTypeOfMarkedExpression(code, typeProvider.intType, null);
+  }
+
+  void fail_localVariableInference_transitive_field_inferred_reversed() {
+    String code = r'''
+class A {
+  f() {
+    var v = x;
+    return v; // marker
+  }
+  final x = 3;
+}
+main() {
+}
+''';
+    _assertPropagatedAssignedType(code, typeProvider.intType, null);
+    _assertTypeOfMarkedExpression(code, typeProvider.intType, null);
+  }
+
+  void test_localVariableInference_declaredType_disabled() {
+    String code = r'''
+main() {
+  dynamic v = 3;
+  return v; // marker
+}''';
+    _assertPropagatedAssignedType(
+        code, typeProvider.dynamicType, typeProvider.intType);
+    _assertTypeOfMarkedExpression(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+
+  void test_localVariableInference_bottom_disabled() {
+    String code = r'''
+main() {
+  var v = null;
+  return v; // marker
+}''';
+    _assertPropagatedAssignedType(code, typeProvider.dynamicType, null);
+    _assertTypeOfMarkedExpression(code, typeProvider.dynamicType, null);
+  }
+
+  void test_localVariableInference_noInitializer_disabled() {
+    String code = r'''
+main() {
+  var v;
+  v = 3;
+  return v; // marker
+}''';
+    _assertPropagatedAssignedType(
+        code, typeProvider.dynamicType, typeProvider.intType);
+    _assertTypeOfMarkedExpression(
+        code, typeProvider.dynamicType, typeProvider.intType);
+  }
+}
+
+@reflectiveTest
+class TypeProviderImplTest extends EngineTestCase {
+  void test_creation() {
+    //
+    // Create a mock library element with the types expected to be in dart:core.
+    // We cannot use either ElementFactory or TestTypeProvider (which uses
+    // ElementFactory) because we side-effect the elements in ways that would
+    // break other tests.
+    //
+    InterfaceType objectType = _classElement("Object", null).type;
+    InterfaceType boolType = _classElement("bool", objectType).type;
+    InterfaceType numType = _classElement("num", objectType).type;
+    InterfaceType doubleType = _classElement("double", numType).type;
+    InterfaceType functionType = _classElement("Function", objectType).type;
+    InterfaceType futureType = _classElement("Future", objectType, ["T"]).type;
+    InterfaceType intType = _classElement("int", numType).type;
+    InterfaceType iterableType =
+        _classElement("Iterable", objectType, ["T"]).type;
+    InterfaceType listType = _classElement("List", objectType, ["E"]).type;
+    InterfaceType mapType = _classElement("Map", objectType, ["K", "V"]).type;
+    InterfaceType stackTraceType = _classElement("StackTrace", objectType).type;
+    InterfaceType streamType = _classElement("Stream", objectType, ["T"]).type;
+    InterfaceType stringType = _classElement("String", objectType).type;
+    InterfaceType symbolType = _classElement("Symbol", objectType).type;
+    InterfaceType typeType = _classElement("Type", objectType).type;
+    CompilationUnitElementImpl coreUnit =
+        new CompilationUnitElementImpl("core.dart");
+    coreUnit.types = <ClassElement>[
+      boolType.element,
+      doubleType.element,
+      functionType.element,
+      intType.element,
+      iterableType.element,
+      listType.element,
+      mapType.element,
+      objectType.element,
+      stackTraceType.element,
+      stringType.element,
+      symbolType.element,
+      typeType.element
+    ];
+    CompilationUnitElementImpl asyncUnit =
+        new CompilationUnitElementImpl("async.dart");
+    asyncUnit.types = <ClassElement>[futureType.element, streamType.element];
+    AnalysisContext context = AnalysisEngine.instance.createAnalysisContext();
+    LibraryElementImpl coreLibrary = new LibraryElementImpl.forNode(
+        context, AstFactory.libraryIdentifier2(["dart.core"]));
+    coreLibrary.definingCompilationUnit = coreUnit;
+    LibraryElementImpl asyncLibrary = new LibraryElementImpl.forNode(
+        context, AstFactory.libraryIdentifier2(["dart.async"]));
+    asyncLibrary.definingCompilationUnit = asyncUnit;
+    //
+    // Create a type provider and ensure that it can return the expected types.
+    //
+    TypeProviderImpl provider = new TypeProviderImpl(coreLibrary, asyncLibrary);
+    expect(provider.boolType, same(boolType));
+    expect(provider.bottomType, isNotNull);
+    expect(provider.doubleType, same(doubleType));
+    expect(provider.dynamicType, isNotNull);
+    expect(provider.functionType, same(functionType));
+    expect(provider.futureType, same(futureType));
+    expect(provider.intType, same(intType));
+    expect(provider.listType, same(listType));
+    expect(provider.mapType, same(mapType));
+    expect(provider.objectType, same(objectType));
+    expect(provider.stackTraceType, same(stackTraceType));
+    expect(provider.stringType, same(stringType));
+    expect(provider.symbolType, same(symbolType));
+    expect(provider.typeType, same(typeType));
+  }
+
+  ClassElement _classElement(String typeName, InterfaceType superclassType,
+      [List<String> parameterNames]) {
+    ClassElementImpl element =
+        new ClassElementImpl.forNode(AstFactory.identifier3(typeName));
+    element.supertype = superclassType;
+    InterfaceTypeImpl type = new InterfaceTypeImpl(element);
+    element.type = type;
+    if (parameterNames != null) {
+      int count = parameterNames.length;
+      if (count > 0) {
+        List<TypeParameterElementImpl> typeParameters =
+            new List<TypeParameterElementImpl>(count);
+        List<TypeParameterTypeImpl> typeArguments =
+            new List<TypeParameterTypeImpl>(count);
+        for (int i = 0; i < count; i++) {
+          TypeParameterElementImpl typeParameter =
+              new TypeParameterElementImpl.forNode(
+                  AstFactory.identifier3(parameterNames[i]));
+          typeParameters[i] = typeParameter;
+          typeArguments[i] = new TypeParameterTypeImpl(typeParameter);
+          typeParameter.type = typeArguments[i];
+        }
+        element.typeParameters = typeParameters;
+        type.typeArguments = typeArguments;
+      }
+    }
+    return element;
+  }
+}
+
+@reflectiveTest
+class TypeResolverVisitorTest extends EngineTestCase {
+  /**
+   * The error listener to which errors will be reported.
+   */
+  GatheringErrorListener _listener;
+
+  /**
+   * The object representing the information about the library in which the types are being
+   * resolved.
+   */
+  Library _library;
+
+  /**
+   * The type provider used to access the types.
+   */
+  TestTypeProvider _typeProvider;
+
+  /**
+   * The visitor used to resolve types needed to form the type hierarchy.
+   */
+  TypeResolverVisitor _visitor;
+
+  void fail_visitConstructorDeclaration() {
+    fail("Not yet tested");
+    _listener.assertNoErrors();
+  }
+
+  void fail_visitFunctionTypeAlias() {
+    fail("Not yet tested");
+    _listener.assertNoErrors();
+  }
+
+  void fail_visitVariableDeclaration() {
+    fail("Not yet tested");
+    ClassElement type = ElementFactory.classElement2("A");
+    VariableDeclaration node = AstFactory.variableDeclaration("a");
+    AstFactory.variableDeclarationList(null, AstFactory.typeName(type), [node]);
+    //resolve(node);
+    expect(node.name.staticType, same(type.type));
+    _listener.assertNoErrors();
+  }
+
+  @override
+  void setUp() {
+    _listener = new GatheringErrorListener();
+    InternalAnalysisContext context = AnalysisContextFactory.contextWithCore();
+    Source librarySource =
+        new FileBasedSource(FileUtilities2.createFile("/lib.dart"));
+    _library = new Library(context, _listener, librarySource);
+    LibraryElementImpl element = new LibraryElementImpl.forNode(
+        context, AstFactory.libraryIdentifier2(["lib"]));
+    element.definingCompilationUnit =
+        new CompilationUnitElementImpl("lib.dart");
+    _library.libraryElement = element;
+    _typeProvider = new TestTypeProvider();
+    _visitor = new TypeResolverVisitor(_library.libraryElement, librarySource,
+        _typeProvider, _library.errorListener,
+        nameScope: _library.libraryScope);
+  }
+
+  void test_visitCatchClause_exception() {
+    // catch (e)
+    CatchClause clause = AstFactory.catchClause("e");
+    SimpleIdentifier exceptionParameter = clause.exceptionParameter;
+    exceptionParameter.staticElement =
+        new LocalVariableElementImpl.forNode(exceptionParameter);
+    _resolveCatchClause(clause, _typeProvider.dynamicType, null);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitCatchClause_exception_stackTrace() {
+    // catch (e, s)
+    CatchClause clause = AstFactory.catchClause2("e", "s");
+    SimpleIdentifier exceptionParameter = clause.exceptionParameter;
+    exceptionParameter.staticElement =
+        new LocalVariableElementImpl.forNode(exceptionParameter);
+    SimpleIdentifier stackTraceParameter = clause.stackTraceParameter;
+    stackTraceParameter.staticElement =
+        new LocalVariableElementImpl.forNode(stackTraceParameter);
+    _resolveCatchClause(
+        clause, _typeProvider.dynamicType, _typeProvider.stackTraceType);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitCatchClause_on_exception() {
+    // on E catch (e)
+    ClassElement exceptionElement = ElementFactory.classElement2("E");
+    TypeName exceptionType = AstFactory.typeName(exceptionElement);
+    CatchClause clause = AstFactory.catchClause4(exceptionType, "e");
+    SimpleIdentifier exceptionParameter = clause.exceptionParameter;
+    exceptionParameter.staticElement =
+        new LocalVariableElementImpl.forNode(exceptionParameter);
+    _resolveCatchClause(
+        clause, exceptionElement.type, null, [exceptionElement]);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitCatchClause_on_exception_stackTrace() {
+    // on E catch (e, s)
+    ClassElement exceptionElement = ElementFactory.classElement2("E");
+    TypeName exceptionType = AstFactory.typeName(exceptionElement);
+    (exceptionType.name as SimpleIdentifier).staticElement = exceptionElement;
+    CatchClause clause = AstFactory.catchClause5(exceptionType, "e", "s");
+    SimpleIdentifier exceptionParameter = clause.exceptionParameter;
+    exceptionParameter.staticElement =
+        new LocalVariableElementImpl.forNode(exceptionParameter);
+    SimpleIdentifier stackTraceParameter = clause.stackTraceParameter;
+    stackTraceParameter.staticElement =
+        new LocalVariableElementImpl.forNode(stackTraceParameter);
+    _resolveCatchClause(clause, exceptionElement.type,
+        _typeProvider.stackTraceType, [exceptionElement]);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitClassDeclaration() {
+    // class A extends B with C implements D {}
+    // class B {}
+    // class C {}
+    // class D {}
+    ClassElement elementA = ElementFactory.classElement2("A");
+    ClassElement elementB = ElementFactory.classElement2("B");
+    ClassElement elementC = ElementFactory.classElement2("C");
+    ClassElement elementD = ElementFactory.classElement2("D");
+    ExtendsClause extendsClause =
+        AstFactory.extendsClause(AstFactory.typeName(elementB));
+    WithClause withClause =
+        AstFactory.withClause([AstFactory.typeName(elementC)]);
+    ImplementsClause implementsClause =
+        AstFactory.implementsClause([AstFactory.typeName(elementD)]);
+    ClassDeclaration declaration = AstFactory.classDeclaration(
+        null, "A", null, extendsClause, withClause, implementsClause);
+    declaration.name.staticElement = elementA;
+    _resolveNode(declaration, [elementA, elementB, elementC, elementD]);
+    expect(elementA.supertype, same(elementB.type));
+    List<InterfaceType> mixins = elementA.mixins;
+    expect(mixins, hasLength(1));
+    expect(mixins[0], same(elementC.type));
+    List<InterfaceType> interfaces = elementA.interfaces;
+    expect(interfaces, hasLength(1));
+    expect(interfaces[0], same(elementD.type));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitClassDeclaration_instanceMemberCollidesWithClass() {
+    // class A {}
+    // class B extends A {
+    //   void A() {}
+    // }
+    ClassElementImpl elementA = ElementFactory.classElement2("A");
+    ClassElementImpl elementB = ElementFactory.classElement2("B");
+    elementB.methods = <MethodElement>[
+      ElementFactory.methodElement("A", VoidTypeImpl.instance)
+    ];
+    ExtendsClause extendsClause =
+        AstFactory.extendsClause(AstFactory.typeName(elementA));
+    ClassDeclaration declaration =
+        AstFactory.classDeclaration(null, "B", null, extendsClause, null, null);
+    declaration.name.staticElement = elementB;
+    _resolveNode(declaration, [elementA, elementB]);
+    expect(elementB.supertype, same(elementA.type));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitClassTypeAlias() {
+    // class A = B with C implements D;
+    ClassElement elementA = ElementFactory.classElement2("A");
+    ClassElement elementB = ElementFactory.classElement2("B");
+    ClassElement elementC = ElementFactory.classElement2("C");
+    ClassElement elementD = ElementFactory.classElement2("D");
+    WithClause withClause =
+        AstFactory.withClause([AstFactory.typeName(elementC)]);
+    ImplementsClause implementsClause =
+        AstFactory.implementsClause([AstFactory.typeName(elementD)]);
+    ClassTypeAlias alias = AstFactory.classTypeAlias("A", null, null,
+        AstFactory.typeName(elementB), withClause, implementsClause);
+    alias.name.staticElement = elementA;
+    _resolveNode(alias, [elementA, elementB, elementC, elementD]);
+    expect(elementA.supertype, same(elementB.type));
+    List<InterfaceType> mixins = elementA.mixins;
+    expect(mixins, hasLength(1));
+    expect(mixins[0], same(elementC.type));
+    List<InterfaceType> interfaces = elementA.interfaces;
+    expect(interfaces, hasLength(1));
+    expect(interfaces[0], same(elementD.type));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitClassTypeAlias_constructorWithOptionalParams_ignored() {
+    // class T {}
+    // class B {
+    //   B.c1();
+    //   B.c2([T a0]);
+    //   B.c3({T a0});
+    // }
+    // class M {}
+    // class C = B with M
+    ClassElement classT = ElementFactory.classElement2('T', []);
+    ClassElementImpl classB = ElementFactory.classElement2('B', []);
+    ConstructorElementImpl constructorBc1 =
+        ElementFactory.constructorElement2(classB, 'c1', []);
+    ConstructorElementImpl constructorBc2 =
+        ElementFactory.constructorElement2(classB, 'c2', [classT.type]);
+    (constructorBc2.parameters[0] as ParameterElementImpl).parameterKind =
+        ParameterKind.POSITIONAL;
+    ConstructorElementImpl constructorBc3 =
+        ElementFactory.constructorElement2(classB, 'c3', [classT.type]);
+    (constructorBc3.parameters[0] as ParameterElementImpl).parameterKind =
+        ParameterKind.NAMED;
+    classB.constructors = [constructorBc1, constructorBc2, constructorBc3];
+    ClassElement classM = ElementFactory.classElement2('M', []);
+    WithClause withClause =
+        AstFactory.withClause([AstFactory.typeName(classM, [])]);
+    ClassElement classC = ElementFactory.classTypeAlias2('C', []);
+    ClassTypeAlias alias = AstFactory.classTypeAlias(
+        'C', null, null, AstFactory.typeName(classB, []), withClause, null);
+    alias.name.staticElement = classC;
+    _resolveNode(alias, [classT, classB, classM, classC]);
+    expect(classC.constructors, hasLength(1));
+    ConstructorElement constructor = classC.constructors[0];
+    expect(constructor.isFactory, isFalse);
+    expect(constructor.isSynthetic, isTrue);
+    expect(constructor.name, 'c1');
+    expect(constructor.functions, hasLength(0));
+    expect(constructor.labels, hasLength(0));
+    expect(constructor.localVariables, hasLength(0));
+    expect(constructor.parameters, isEmpty);
+  }
+
+  void test_visitClassTypeAlias_constructorWithParams() {
+    // class T {}
+    // class B {
+    //   B(T a0);
+    // }
+    // class M {}
+    // class C = B with M
+    ClassElement classT = ElementFactory.classElement2('T', []);
+    ClassElementImpl classB = ElementFactory.classElement2('B', []);
+    ConstructorElementImpl constructorB =
+        ElementFactory.constructorElement2(classB, '', [classT.type]);
+    classB.constructors = [constructorB];
+    ClassElement classM = ElementFactory.classElement2('M', []);
+    WithClause withClause =
+        AstFactory.withClause([AstFactory.typeName(classM, [])]);
+    ClassElement classC = ElementFactory.classTypeAlias2('C', []);
+    ClassTypeAlias alias = AstFactory.classTypeAlias(
+        'C', null, null, AstFactory.typeName(classB, []), withClause, null);
+    alias.name.staticElement = classC;
+    _resolveNode(alias, [classT, classB, classM, classC]);
+    expect(classC.constructors, hasLength(1));
+    ConstructorElement constructor = classC.constructors[0];
+    expect(constructor.isFactory, isFalse);
+    expect(constructor.isSynthetic, isTrue);
+    expect(constructor.name, '');
+    expect(constructor.functions, hasLength(0));
+    expect(constructor.labels, hasLength(0));
+    expect(constructor.localVariables, hasLength(0));
+    expect(constructor.parameters, hasLength(1));
+    expect(constructor.parameters[0].type, equals(classT.type));
+    expect(constructor.parameters[0].name,
+        equals(constructorB.parameters[0].name));
+  }
+
+  void test_visitClassTypeAlias_defaultConstructor() {
+    // class B {}
+    // class M {}
+    // class C = B with M
+    ClassElementImpl classB = ElementFactory.classElement2('B', []);
+    ConstructorElementImpl constructorB =
+        ElementFactory.constructorElement2(classB, '', []);
+    constructorB.setModifier(Modifier.SYNTHETIC, true);
+    classB.constructors = [constructorB];
+    ClassElement classM = ElementFactory.classElement2('M', []);
+    WithClause withClause =
+        AstFactory.withClause([AstFactory.typeName(classM, [])]);
+    ClassElement classC = ElementFactory.classTypeAlias2('C', []);
+    ClassTypeAlias alias = AstFactory.classTypeAlias(
+        'C', null, null, AstFactory.typeName(classB, []), withClause, null);
+    alias.name.staticElement = classC;
+    _resolveNode(alias, [classB, classM, classC]);
+    expect(classC.constructors, hasLength(1));
+    ConstructorElement constructor = classC.constructors[0];
+    expect(constructor.isFactory, isFalse);
+    expect(constructor.isSynthetic, isTrue);
+    expect(constructor.name, '');
+    expect(constructor.functions, hasLength(0));
+    expect(constructor.labels, hasLength(0));
+    expect(constructor.localVariables, hasLength(0));
+    expect(constructor.parameters, isEmpty);
+  }
+
+  void test_visitFieldFormalParameter_functionType() {
+    InterfaceType intType = _typeProvider.intType;
+    TypeName intTypeName = AstFactory.typeName4("int");
+    String innerParameterName = "a";
+    SimpleFormalParameter parameter =
+        AstFactory.simpleFormalParameter3(innerParameterName);
+    parameter.identifier.staticElement =
+        ElementFactory.requiredParameter(innerParameterName);
+    String outerParameterName = "p";
+    FormalParameter node = AstFactory.fieldFormalParameter(null, intTypeName,
+        outerParameterName, AstFactory.formalParameterList([parameter]));
+    node.identifier.staticElement =
+        ElementFactory.requiredParameter(outerParameterName);
+    DartType parameterType = _resolveFormalParameter(node, [intType.element]);
+    EngineTestCase.assertInstanceOf(
+        (obj) => obj is FunctionType, FunctionType, parameterType);
+    FunctionType functionType = parameterType as FunctionType;
+    expect(functionType.returnType, same(intType));
+    expect(functionType.parameters, hasLength(1));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFieldFormalParameter_noType() {
+    String parameterName = "p";
+    FormalParameter node =
+        AstFactory.fieldFormalParameter(Keyword.VAR, null, parameterName);
+    node.identifier.staticElement =
+        ElementFactory.requiredParameter(parameterName);
+    expect(_resolveFormalParameter(node), same(_typeProvider.dynamicType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFieldFormalParameter_type() {
+    InterfaceType intType = _typeProvider.intType;
+    TypeName intTypeName = AstFactory.typeName4("int");
+    String parameterName = "p";
+    FormalParameter node =
+        AstFactory.fieldFormalParameter(null, intTypeName, parameterName);
+    node.identifier.staticElement =
+        ElementFactory.requiredParameter(parameterName);
+    expect(_resolveFormalParameter(node, [intType.element]), same(intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionDeclaration() {
+    // R f(P p) {}
+    // class R {}
+    // class P {}
+    ClassElement elementR = ElementFactory.classElement2('R');
+    ClassElement elementP = ElementFactory.classElement2('P');
+    FunctionElement elementF = ElementFactory.functionElement('f');
+    FunctionDeclaration declaration = AstFactory.functionDeclaration(
+        AstFactory.typeName4('R'),
+        null,
+        'f',
+        AstFactory.functionExpression2(
+            AstFactory.formalParameterList([
+              AstFactory.simpleFormalParameter4(AstFactory.typeName4('P'), 'p')
+            ]),
+            null));
+    declaration.name.staticElement = elementF;
+    _resolveNode(declaration, [elementR, elementP]);
+    expect(declaration.returnType.type, elementR.type);
+    SimpleFormalParameter parameter =
+        declaration.functionExpression.parameters.parameters[0];
+    expect(parameter.type.type, elementP.type);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionDeclaration_typeParameter() {
+    // E f<E>(E e) {}
+    TypeParameterElement elementE = ElementFactory.typeParameterElement('E');
+    FunctionElementImpl elementF = ElementFactory.functionElement('f');
+    elementF.typeParameters = <TypeParameterElement>[elementE];
+    FunctionDeclaration declaration = AstFactory.functionDeclaration(
+        AstFactory.typeName4('E'),
+        null,
+        'f',
+        AstFactory.functionExpression2(
+            AstFactory.formalParameterList([
+              AstFactory.simpleFormalParameter4(AstFactory.typeName4('E'), 'e')
+            ]),
+            null));
+    declaration.name.staticElement = elementF;
+    _resolveNode(declaration, []);
+    expect(declaration.returnType.type, elementE.type);
+    SimpleFormalParameter parameter =
+        declaration.functionExpression.parameters.parameters[0];
+    expect(parameter.type.type, elementE.type);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionTypedFormalParameter() {
+    // R f(R g(P p)) {}
+    // class R {}
+    // class P {}
+    ClassElement elementR = ElementFactory.classElement2('R');
+    ClassElement elementP = ElementFactory.classElement2('P');
+    FunctionElement elementF = ElementFactory.functionElement('f');
+    ParameterElementImpl requiredParameter =
+        ElementFactory.requiredParameter('p');
+    FunctionTypedFormalParameter parameterDeclaration = AstFactory
+        .functionTypedFormalParameter(AstFactory.typeName4('R'), 'g', [
+      AstFactory.simpleFormalParameter4(AstFactory.typeName4('P'), 'p')
+    ]);
+    parameterDeclaration.identifier.staticElement = requiredParameter;
+    FunctionDeclaration declaration = AstFactory.functionDeclaration(
+        AstFactory.typeName4('R'),
+        null,
+        'f',
+        AstFactory.functionExpression2(
+            AstFactory.formalParameterList([parameterDeclaration]), null));
+    declaration.name.staticElement = elementF;
+    _resolveNode(declaration, [elementR, elementP]);
+    expect(declaration.returnType.type, elementR.type);
+    FunctionTypedFormalParameter parameter =
+        declaration.functionExpression.parameters.parameters[0];
+    expect(parameter.returnType.type, elementR.type);
+    SimpleFormalParameter innerParameter = parameter.parameters.parameters[0];
+    expect(innerParameter.type.type, elementP.type);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitFunctionTypedFormalParameter_typeParameter() {
+    // R f(R g<E>(E e)) {}
+    // class R {}
+    ClassElement elementR = ElementFactory.classElement2('R');
+    TypeParameterElement elementE = ElementFactory.typeParameterElement('E');
+    FunctionElement elementF = ElementFactory.functionElement('f');
+    ParameterElementImpl requiredParameter =
+        ElementFactory.requiredParameter('g');
+    requiredParameter.typeParameters = <TypeParameterElement>[elementE];
+    FunctionTypedFormalParameter parameterDeclaration = AstFactory
+        .functionTypedFormalParameter(AstFactory.typeName4('R'), 'g', [
+      AstFactory.simpleFormalParameter4(AstFactory.typeName4('E'), 'e')
+    ]);
+    parameterDeclaration.identifier.staticElement = requiredParameter;
+    FunctionDeclaration declaration = AstFactory.functionDeclaration(
+        AstFactory.typeName4('R'),
+        null,
+        'f',
+        AstFactory.functionExpression2(
+            AstFactory.formalParameterList([parameterDeclaration]), null));
+    declaration.name.staticElement = elementF;
+    _resolveNode(declaration, [elementR]);
+    expect(declaration.returnType.type, elementR.type);
+    FunctionTypedFormalParameter parameter =
+        declaration.functionExpression.parameters.parameters[0];
+    expect(parameter.returnType.type, elementR.type);
+    SimpleFormalParameter innerParameter = parameter.parameters.parameters[0];
+    expect(innerParameter.type.type, elementE.type);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitMethodDeclaration() {
+    // class A {
+    //   R m(P p) {}
+    // }
+    // class R {}
+    // class P {}
+    ClassElementImpl elementA = ElementFactory.classElement2('A');
+    ClassElement elementR = ElementFactory.classElement2('R');
+    ClassElement elementP = ElementFactory.classElement2('P');
+    MethodElement elementM = ElementFactory.methodElement('m', null);
+    elementA.methods = <MethodElement>[elementM];
+    MethodDeclaration declaration = AstFactory.methodDeclaration(
+        null,
+        AstFactory.typeName4('R'),
+        null,
+        null,
+        AstFactory.identifier3('m'),
+        AstFactory.formalParameterList([
+          AstFactory.simpleFormalParameter4(AstFactory.typeName4('P'), 'p')
+        ]));
+    declaration.name.staticElement = elementM;
+    _resolveNode(declaration, [elementA, elementR, elementP]);
+    expect(declaration.returnType.type, elementR.type);
+    SimpleFormalParameter parameter = declaration.parameters.parameters[0];
+    expect(parameter.type.type, elementP.type);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitMethodDeclaration_typeParameter() {
+    // class A {
+    //   E m<E>(E e) {}
+    // }
+    ClassElementImpl elementA = ElementFactory.classElement2('A');
+    TypeParameterElement elementE = ElementFactory.typeParameterElement('E');
+    MethodElementImpl elementM = ElementFactory.methodElement('m', null);
+    elementM.typeParameters = <TypeParameterElement>[elementE];
+    elementA.methods = <MethodElement>[elementM];
+    MethodDeclaration declaration = AstFactory.methodDeclaration(
+        null,
+        AstFactory.typeName4('E'),
+        null,
+        null,
+        AstFactory.identifier3('m'),
+        AstFactory.formalParameterList([
+          AstFactory.simpleFormalParameter4(AstFactory.typeName4('E'), 'e')
+        ]));
+    declaration.name.staticElement = elementM;
+    _resolveNode(declaration, [elementA]);
+    expect(declaration.returnType.type, elementE.type);
+    SimpleFormalParameter parameter = declaration.parameters.parameters[0];
+    expect(parameter.type.type, elementE.type);
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSimpleFormalParameter_noType() {
+    // p
+    FormalParameter node = AstFactory.simpleFormalParameter3("p");
+    node.identifier.staticElement =
+        new ParameterElementImpl.forNode(AstFactory.identifier3("p"));
+    expect(_resolveFormalParameter(node), same(_typeProvider.dynamicType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitSimpleFormalParameter_type() {
+    // int p
+    InterfaceType intType = _typeProvider.intType;
+    ClassElement intElement = intType.element;
+    FormalParameter node =
+        AstFactory.simpleFormalParameter4(AstFactory.typeName(intElement), "p");
+    SimpleIdentifier identifier = node.identifier;
+    ParameterElementImpl element = new ParameterElementImpl.forNode(identifier);
+    identifier.staticElement = element;
+    expect(_resolveFormalParameter(node, [intElement]), same(intType));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitTypeName_noParameters_noArguments() {
+    ClassElement classA = ElementFactory.classElement2("A");
+    TypeName typeName = AstFactory.typeName(classA);
+    typeName.type = null;
+    _resolveNode(typeName, [classA]);
+    expect(typeName.type, same(classA.type));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitTypeName_parameters_arguments() {
+    ClassElement classA = ElementFactory.classElement2("A", ["E"]);
+    ClassElement classB = ElementFactory.classElement2("B");
+    TypeName typeName =
+        AstFactory.typeName(classA, [AstFactory.typeName(classB)]);
+    typeName.type = null;
+    _resolveNode(typeName, [classA, classB]);
+    InterfaceType resultType = typeName.type as InterfaceType;
+    expect(resultType.element, same(classA));
+    List<DartType> resultArguments = resultType.typeArguments;
+    expect(resultArguments, hasLength(1));
+    expect(resultArguments[0], same(classB.type));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitTypeName_parameters_noArguments() {
+    ClassElement classA = ElementFactory.classElement2("A", ["E"]);
+    TypeName typeName = AstFactory.typeName(classA);
+    typeName.type = null;
+    _resolveNode(typeName, [classA]);
+    InterfaceType resultType = typeName.type as InterfaceType;
+    expect(resultType.element, same(classA));
+    List<DartType> resultArguments = resultType.typeArguments;
+    expect(resultArguments, hasLength(1));
+    expect(resultArguments[0], same(DynamicTypeImpl.instance));
+    _listener.assertNoErrors();
+  }
+
+  void test_visitTypeName_void() {
+    ClassElement classA = ElementFactory.classElement2("A");
+    TypeName typeName = AstFactory.typeName4("void");
+    _resolveNode(typeName, [classA]);
+    expect(typeName.type, same(VoidTypeImpl.instance));
+    _listener.assertNoErrors();
+  }
+
+  /**
+   * Analyze the given catch clause and assert that the types of the parameters have been set to the
+   * given types. The types can be null if the catch clause does not have the corresponding
+   * parameter.
+   *
+   * @param node the catch clause to be analyzed
+   * @param exceptionType the expected type of the exception parameter
+   * @param stackTraceType the expected type of the stack trace parameter
+   * @param definedElements the elements that are to be defined in the scope in which the element is
+   *          being resolved
+   */
+  void _resolveCatchClause(
+      CatchClause node, DartType exceptionType, InterfaceType stackTraceType,
+      [List<Element> definedElements]) {
+    _resolveNode(node, definedElements);
+    SimpleIdentifier exceptionParameter = node.exceptionParameter;
+    if (exceptionParameter != null) {
+      expect(exceptionParameter.staticType, same(exceptionType));
+    }
+    SimpleIdentifier stackTraceParameter = node.stackTraceParameter;
+    if (stackTraceParameter != null) {
+      expect(stackTraceParameter.staticType, same(stackTraceType));
+    }
+  }
+
+  /**
+   * Return the type associated with the given parameter after the static type analyzer has computed
+   * a type for it.
+   *
+   * @param node the parameter with which the type is associated
+   * @param definedElements the elements that are to be defined in the scope in which the element is
+   *          being resolved
+   * @return the type associated with the parameter
+   */
+  DartType _resolveFormalParameter(FormalParameter node,
+      [List<Element> definedElements]) {
+    _resolveNode(node, definedElements);
+    return (node.identifier.staticElement as ParameterElement).type;
+  }
+
+  /**
+   * Return the element associated with the given identifier after the resolver has resolved the
+   * identifier.
+   *
+   * @param node the expression to be resolved
+   * @param definedElements the elements that are to be defined in the scope in which the element is
+   *          being resolved
+   * @return the element to which the expression was resolved
+   */
+  void _resolveNode(AstNode node, [List<Element> definedElements]) {
+    if (definedElements != null) {
+      for (Element element in definedElements) {
+        _library.libraryScope.define(element);
+      }
+    }
+    node.accept(_visitor);
+  }
+}
+
+class _AnalysisContextFactory_initContextWithCore
+    extends DirectoryBasedDartSdk {
+  _AnalysisContextFactory_initContextWithCore(JavaFile arg0) : super(arg0);
+
+  @override
+  LibraryMap initialLibraryMap(bool useDart2jsPaths) {
+    LibraryMap map = new LibraryMap();
+    _addLibrary(map, DartSdk.DART_ASYNC, false, "async.dart");
+    _addLibrary(map, DartSdk.DART_CORE, false, "core.dart");
+    _addLibrary(map, DartSdk.DART_HTML, false, "html_dartium.dart");
+    _addLibrary(map, AnalysisContextFactory._DART_MATH, false, "math.dart");
+    _addLibrary(map, AnalysisContextFactory._DART_INTERCEPTORS, true,
+        "_interceptors.dart");
+    _addLibrary(
+        map, AnalysisContextFactory._DART_JS_HELPER, true, "_js_helper.dart");
+    return map;
+  }
+
+  void _addLibrary(LibraryMap map, String uri, bool isInternal, String path) {
+    SdkLibraryImpl library = new SdkLibraryImpl(uri);
+    if (isInternal) {
+      library.category = "Internal";
+    }
+    library.path = path;
+    map.setLibrary(uri, library);
+  }
+}
+
+class _SimpleResolverTest_localVariable_types_invoked
+    extends RecursiveAstVisitor<Object> {
+  final SimpleResolverTest test;
+
+  List<bool> found;
+
+  List<CaughtException> thrownException;
+
+  _SimpleResolverTest_localVariable_types_invoked(
+      this.test, this.found, this.thrownException)
+      : super();
+
+  @override
+  Object visitSimpleIdentifier(SimpleIdentifier node) {
+    if (node.name == "myVar" && node.parent is MethodInvocation) {
+      try {
+        found[0] = true;
+        // check static type
+        DartType staticType = node.staticType;
+        expect(staticType, same(test.typeProvider.dynamicType));
+        // check propagated type
+        FunctionType propagatedType = node.propagatedType as FunctionType;
+        expect(propagatedType.returnType, test.typeProvider.stringType);
+      } on AnalysisException catch (e, stackTrace) {
+        thrownException[0] = new CaughtException(e, stackTrace);
+      }
+    }
+    return null;
+  }
+}