Removed fixed dependencies

packages/analyzer/test/src/summary/resynthesize_common.dart

+// Copyright (c) 2015, 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 test.src.serialization.elements_test;
+
+import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/dart/constant/value.dart';
+import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/dart/element/type.dart';
+import 'package:analyzer/error/error.dart';
+import 'package:analyzer/src/dart/ast/ast.dart';
+import 'package:analyzer/src/dart/element/element.dart';
+import 'package:analyzer/src/dart/element/handle.dart';
+import 'package:analyzer/src/dart/element/member.dart';
+import 'package:analyzer/src/dart/element/type.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/generated/resolver.dart' show Namespace;
+import 'package:analyzer/src/generated/sdk.dart';
+import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/generated/testing/ast_factory.dart';
+import 'package:analyzer/src/summary/idl.dart';
+import 'package:analyzer/src/summary/resynthesize.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+import 'package:unittest/unittest.dart';
+
+import '../../generated/test_support.dart';
+import '../abstract_single_unit.dart';
+import '../context/abstract_context.dart';
+
+/**
+ * Abstract base class for resynthesizing and comparing elements.
+ */
+abstract class AbstractResynthesizeTest extends AbstractSingleUnitTest {
+  Set<Source> otherLibrarySources = new Set<Source>();
+
+  /**
+   * Names of variables which have initializers that are not valid constants,
+   * so they are not resynthesized.
+   */
+  Set<String> variablesWithNotConstInitializers = new Set<String>();
+
+  /**
+   * Tests may set this to `true` to indicate that a missing file at the time of
+   * summary resynthesis shouldn't trigger an error.
+   */
+  bool allowMissingFiles = false;
+
+  void addLibrary(String uri) {
+    otherLibrarySources.add(context.sourceFactory.forUri(uri));
+  }
+
+  Source addLibrarySource(String filePath, String contents) {
+    Source source = addSource(filePath, contents);
+    otherLibrarySources.add(source);
+    return source;
+  }
+
+  void assertNoErrors(Source source) {
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    for (AnalysisError error in context.computeErrors(source)) {
+      expect(error.source, source);
+      ErrorCode errorCode = error.errorCode;
+      if (errorCode == HintCode.UNUSED_ELEMENT ||
+          errorCode == HintCode.UNUSED_FIELD) {
+        continue;
+      }
+      if (errorCode == HintCode.UNUSED_CATCH_CLAUSE ||
+          errorCode == HintCode.UNUSED_CATCH_STACK ||
+          errorCode == HintCode.UNUSED_LOCAL_VARIABLE) {
+        continue;
+      }
+      errorListener.onError(error);
+    }
+    errorListener.assertNoErrors();
+  }
+
+  /**
+   * Verify that the given prefix is safe to elide from a resynthesized AST.
+   */
+  void checkElidablePrefix(SimpleIdentifier prefix) {
+    if (prefix.staticElement is! PrefixElement &&
+        prefix.staticElement is! ClassElement) {
+      fail('Prefix of type ${prefix.staticElement.runtimeType}'
+          ' should not have been elided');
+    }
+  }
+
+  void checkLibraryElements(
+      LibraryElementImpl original, LibraryElementImpl resynthesized) {
+    compareElements(resynthesized, original, '(library)');
+    expect(resynthesized.displayName, original.displayName);
+    expect(original.enclosingElement, isNull);
+    expect(resynthesized.enclosingElement, isNull);
+    expect(resynthesized.hasExtUri, original.hasExtUri);
+    compareCompilationUnitElements(resynthesized.definingCompilationUnit,
+        original.definingCompilationUnit);
+    expect(resynthesized.parts.length, original.parts.length, reason: 'parts');
+    for (int i = 0; i < resynthesized.parts.length; i++) {
+      compareCompilationUnitElements(resynthesized.parts[i], original.parts[i]);
+    }
+    expect(resynthesized.imports.length, original.imports.length,
+        reason: 'imports');
+    for (int i = 0; i < resynthesized.imports.length; i++) {
+      ImportElement originalImport = original.imports[i];
+      compareImportElements(
+          resynthesized.imports[i], originalImport, originalImport.toString());
+    }
+    expect(resynthesized.exports.length, original.exports.length,
+        reason: 'exports');
+    for (int i = 0; i < resynthesized.exports.length; i++) {
+      ExportElement originalExport = original.exports[i];
+      compareExportElements(
+          resynthesized.exports[i], originalExport, originalExport.toString());
+    }
+    expect(resynthesized.nameLength, original.nameLength);
+    compareNamespaces(resynthesized.publicNamespace, original.publicNamespace,
+        '(public namespace)');
+    compareNamespaces(resynthesized.exportNamespace, original.exportNamespace,
+        '(export namespace)');
+    if (original.entryPoint == null) {
+      expect(resynthesized.entryPoint, isNull);
+    } else {
+      expect(resynthesized.entryPoint, isNotNull);
+      compareFunctionElements(
+          resynthesized.entryPoint, original.entryPoint, '(entry point)');
+    }
+    // The libraries `dart:core` and `dart:async` cannot create their
+    // `loadLibrary` functions until after both are created.
+    if (original.name != 'dart.core' && original.name != 'dart.async') {
+      compareExecutableElements(
+          resynthesized.loadLibraryFunction as ExecutableElementImpl,
+          original.loadLibraryFunction as ExecutableElementImpl,
+          '(loadLibraryFunction)');
+    }
+    expect(resynthesized.libraryCycle.toSet(), original.libraryCycle.toSet());
+  }
+
+  /**
+   * Verify that the [resynthesizer] didn't do any unnecessary work when
+   * resynthesizing [library].
+   */
+  void checkMinimalResynthesisWork(
+      TestSummaryResynthesizer resynthesizer, LibraryElement library) {
+    // Check that no other summaries needed to be resynthesized to resynthesize
+    // the library element.
+    expect(resynthesizer.resynthesisCount, 1);
+    // Check that the only linked summary consulted was that for [uri].
+    expect(resynthesizer.linkedSummariesRequested, hasLength(1));
+    expect(resynthesizer.linkedSummariesRequested.first,
+        library.source.uri.toString());
+    // Check that the only unlinked summaries consulted were those for the
+    // library in question.
+    Set<String> expectedCompilationUnitUris = library.units
+        .map((CompilationUnitElement unit) => unit.source.uri.toString())
+        .toSet();
+    for (String requestedUri in resynthesizer.unlinkedSummariesRequested) {
+      expect(expectedCompilationUnitUris, contains(requestedUri));
+    }
+  }
+
+  void checkPossibleLocalElements(Element resynthesized, Element original) {
+    if (original is! LocalElement && resynthesized is! LocalElement) {
+      return;
+    }
+    if (original is LocalElement && resynthesized is LocalElement) {
+      expect(resynthesized.visibleRange, original.visibleRange);
+    } else {
+      fail('Incompatible local elements '
+          '${resynthesized.runtimeType} vs. ${original.runtimeType}');
+    }
+  }
+
+  void checkPossibleMember(
+      Element resynthesized, Element original, String desc) {
+    Element resynthesizedNonHandle = resynthesized is ElementHandle
+        ? resynthesized.actualElement
+        : resynthesized;
+    if (original is Member) {
+      expect(resynthesizedNonHandle, new isInstanceOf<Member>(), reason: desc);
+      if (resynthesizedNonHandle is Member) {
+        List<DartType> resynthesizedTypeArguments =
+            resynthesizedNonHandle.definingType.typeArguments;
+        List<DartType> originalTypeArguments =
+            original.definingType.typeArguments;
+        expect(
+            resynthesizedTypeArguments, hasLength(originalTypeArguments.length),
+            reason: desc);
+        for (int i = 0; i < originalTypeArguments.length; i++) {
+          compareTypeImpls(resynthesizedTypeArguments[i],
+              originalTypeArguments[i], '$desc type argument $i');
+        }
+      }
+    } else {
+      expect(
+          resynthesizedNonHandle, isNot(new isInstanceOf<ConstructorMember>()),
+          reason: desc);
+    }
+  }
+
+  void compareClassElements(ClassElement r, ClassElement o, String desc) {
+    compareElements(r, o, desc);
+    expect(r.fields.length, o.fields.length, reason: '$desc fields.length');
+    for (int i = 0; i < r.fields.length; i++) {
+      String name = o.fields[i].name;
+      compareFieldElements(r.fields[i], o.fields[i], '$desc.field $name');
+    }
+    compareTypes(r.supertype, o.supertype, '$desc supertype');
+    expect(r.interfaces.length, o.interfaces.length,
+        reason: '$desc interfaces.length');
+    for (int i = 0; i < r.interfaces.length; i++) {
+      compareTypes(r.interfaces[i], o.interfaces[i],
+          '$desc interface ${o.interfaces[i].name}');
+    }
+    expect(r.mixins.length, o.mixins.length, reason: '$desc mixins.length');
+    for (int i = 0; i < r.mixins.length; i++) {
+      compareTypes(r.mixins[i], o.mixins[i], '$desc mixin ${o.mixins[i].name}');
+    }
+    expect(r.typeParameters.length, o.typeParameters.length,
+        reason: '$desc typeParameters.length');
+    for (int i = 0; i < r.typeParameters.length; i++) {
+      compareTypeParameterElements(r.typeParameters[i], o.typeParameters[i],
+          '$desc type parameter ${o.typeParameters[i].name}');
+    }
+    expect(r.constructors.length, o.constructors.length,
+        reason: '$desc constructors.length');
+    for (int i = 0; i < r.constructors.length; i++) {
+      compareConstructorElements(r.constructors[i], o.constructors[i],
+          '$desc constructor ${o.constructors[i].name}');
+    }
+    expect(r.accessors.length, o.accessors.length,
+        reason: '$desc accessors.length');
+    List<PropertyAccessorElement> rAccessors = _getSortedPropertyAccessors(r);
+    List<PropertyAccessorElement> oAccessors = _getSortedPropertyAccessors(o);
+    for (int i = 0; i < r.accessors.length; i++) {
+      comparePropertyAccessorElements(
+          rAccessors[i], oAccessors[i], '$desc accessor ${oAccessors[i].name}');
+    }
+    expect(r.methods.length, o.methods.length, reason: '$desc methods.length');
+    for (int i = 0; i < r.methods.length; i++) {
+      compareMethodElements(
+          r.methods[i], o.methods[i], '$desc.${o.methods[i].name}');
+    }
+    compareTypes(r.type, o.type, desc);
+    if (r is ClassElementImpl && o is ClassElementImpl) {
+      expect(r.hasBeenInferred, o.hasBeenInferred, reason: desc);
+    }
+  }
+
+  void compareCompilationUnitElements(CompilationUnitElementImpl resynthesized,
+      CompilationUnitElementImpl original) {
+    String desc = 'Compilation unit ${original.source.uri}';
+    compareUriReferencedElements(resynthesized, original, desc);
+    expect(resynthesized.source, original.source);
+    expect(resynthesized.librarySource, original.librarySource);
+    expect(resynthesized.types.length, original.types.length,
+        reason: '$desc types');
+    for (int i = 0; i < resynthesized.types.length; i++) {
+      compareClassElements(
+          resynthesized.types[i], original.types[i], original.types[i].name);
+    }
+    expect(resynthesized.topLevelVariables.length,
+        original.topLevelVariables.length,
+        reason: '$desc topLevelVariables');
+    for (int i = 0; i < resynthesized.topLevelVariables.length; i++) {
+      String name = resynthesized.topLevelVariables[i].name;
+      compareTopLevelVariableElements(
+          resynthesized.topLevelVariables[i],
+          original.topLevelVariables
+              .singleWhere((TopLevelVariableElement e) => e.name == name),
+          'variable $name');
+    }
+    expect(resynthesized.functions.length, original.functions.length,
+        reason: '$desc functions');
+    for (int i = 0; i < resynthesized.functions.length; i++) {
+      compareFunctionElements(resynthesized.functions[i], original.functions[i],
+          'function ${original.functions[i].name}');
+    }
+    expect(resynthesized.functionTypeAliases.length,
+        original.functionTypeAliases.length,
+        reason: '$desc functionTypeAliases');
+    for (int i = 0; i < resynthesized.functionTypeAliases.length; i++) {
+      compareFunctionTypeAliasElements(
+          resynthesized.functionTypeAliases[i],
+          original.functionTypeAliases[i],
+          original.functionTypeAliases[i].name);
+    }
+    expect(resynthesized.enums.length, original.enums.length,
+        reason: '$desc enums');
+    for (int i = 0; i < resynthesized.enums.length; i++) {
+      compareClassElements(
+          resynthesized.enums[i], original.enums[i], original.enums[i].name);
+    }
+    expect(resynthesized.accessors.length, original.accessors.length,
+        reason: '$desc accessors');
+    for (int i = 0; i < resynthesized.accessors.length; i++) {
+      String name = resynthesized.accessors[i].name;
+      if (original.accessors[i].isGetter) {
+        comparePropertyAccessorElements(
+            resynthesized.accessors[i],
+            original.accessors
+                .singleWhere((PropertyAccessorElement e) => e.name == name),
+            'getter $name');
+      } else {
+        comparePropertyAccessorElements(
+            resynthesized.accessors[i],
+            original.accessors
+                .singleWhere((PropertyAccessorElement e) => e.name == name),
+            'setter $name');
+      }
+    }
+    // Note: no need to test CompilationUnitElementImpl._offsetToElementMap
+    // since it is built on demand when needed (see
+    // CompilationUnitElementImpl.getElementAt])
+  }
+
+  void compareConstAstLists(
+      List<Object> rItems, List<Object> oItems, String desc) {
+    if (rItems == null && oItems == null) {
+      return;
+    }
+    expect(rItems != null && oItems != null, isTrue);
+    expect(rItems, hasLength(oItems.length));
+    for (int i = 0; i < oItems.length; i++) {
+      Object rItem = rItems[i];
+      Object oItem = oItems[i];
+      if (rItem is Expression && oItem is Expression) {
+        compareConstAsts(rItem, oItem, desc);
+      } else if (rItem is TypeName && oItem is TypeName) {
+        compareConstAsts(rItem.name, oItem.name, desc);
+      } else if (rItem is InterpolationString && oItem is InterpolationString) {
+        expect(rItem.value, oItem.value);
+      } else if (rItem is InterpolationExpression &&
+          oItem is InterpolationExpression) {
+        compareConstAsts(rItem.expression, oItem.expression, desc);
+      } else if (rItem is MapLiteralEntry && oItem is MapLiteralEntry) {
+        compareConstAsts(rItem.key, oItem.key, desc);
+        compareConstAsts(rItem.value, oItem.value, desc);
+      } else if (oItem is ConstructorFieldInitializer &&
+          rItem is ConstructorFieldInitializer) {
+        compareConstAsts(rItem.fieldName, oItem.fieldName, desc);
+        if (variablesWithNotConstInitializers.contains(rItem.fieldName.name)) {
+          _assertUnresolvedIdentifier(rItem.expression, desc);
+        } else {
+          compareConstAsts(rItem.expression, oItem.expression, desc);
+        }
+      } else if (oItem is SuperConstructorInvocation &&
+          rItem is SuperConstructorInvocation) {
+        compareElements(rItem.staticElement, oItem.staticElement, desc);
+        compareConstAsts(rItem.constructorName, oItem.constructorName, desc);
+        compareConstAstLists(
+            rItem.argumentList.arguments, oItem.argumentList.arguments, desc);
+      } else if (oItem is RedirectingConstructorInvocation &&
+          rItem is RedirectingConstructorInvocation) {
+        compareElements(rItem.staticElement, oItem.staticElement, desc);
+        compareConstAsts(rItem.constructorName, oItem.constructorName, desc);
+        compareConstAstLists(
+            rItem.argumentList.arguments, oItem.argumentList.arguments, desc);
+      } else {
+        fail('$desc Incompatible item types: '
+            '${rItem.runtimeType} vs. ${oItem.runtimeType}');
+      }
+    }
+  }
+
+  void compareConstAsts(AstNode r, AstNode o, String desc) {
+    if (o == null) {
+      expect(r, isNull, reason: desc);
+    } else {
+      expect(r, isNotNull, reason: desc);
+      // ConstantAstCloner does not copy static types, and constant values
+      // computer does not use static types. So, we don't set them during
+      // resynthesis and should not check them here.
+      if (o is ParenthesizedExpression) {
+        // We don't resynthesize parenthesis, so just ignore it.
+        compareConstAsts(r, o.expression, desc);
+      } else if (o is SimpleIdentifier && r is SimpleIdentifier) {
+        expect(r.name, o.name, reason: desc);
+        compareElements(r.staticElement, o.staticElement, desc);
+      } else if (o is PrefixedIdentifier && r is SimpleIdentifier) {
+        // We don't resynthesize prefixed identifiers when the prefix refers to
+        // a PrefixElement or a ClassElement.  We use simple identifiers with
+        // correct elements.
+        if (o.prefix.staticElement is PrefixElement ||
+            o.prefix.staticElement is ClassElement) {
+          compareConstAsts(r, o.identifier, desc);
+        } else {
+          fail('Prefix of type ${o.prefix.staticElement.runtimeType} should not'
+              ' have been elided');
+        }
+      } else if (o is SimpleIdentifier && r is PrefixedIdentifier) {
+        // In 'class C {static const a = 0; static const b = a;}' the reference
+        // to 'a' in 'b' is serialized as a fully qualified 'C.a' reference.
+        if (r.prefix.staticElement is ClassElement) {
+          compareElements(
+              r.prefix.staticElement, o.staticElement?.enclosingElement, desc);
+          compareConstAsts(r.identifier, o, desc);
+        } else {
+          fail('Prefix of type ${r.prefix.staticElement.runtimeType} should not'
+              ' have been elided');
+        }
+      } else if (o is PropertyAccess &&
+          o.target is PrefixedIdentifier &&
+          r is PrefixedIdentifier) {
+        // We don't resynthesize prefixed identifiers when the prefix refers to
+        // a PrefixElement or a ClassElement.  Which means that if the original
+        // expression was e.g. `prefix.topLevelVariableName.length`, it will get
+        // resynthesized as `topLevelVariableName.length`
+        PrefixedIdentifier oTarget = o.target;
+        checkElidablePrefix(oTarget.prefix);
+        compareConstAsts(
+            r, AstFactory.identifier(oTarget.identifier, o.propertyName), desc);
+      } else if (o is PrefixedIdentifier && r is PrefixedIdentifier) {
+        compareConstAsts(r.prefix, o.prefix, desc);
+        compareConstAsts(r.identifier, o.identifier, desc);
+      } else if (o is PropertyAccess && r is PropertyAccess) {
+        compareConstAsts(r.target, o.target, desc);
+        String oName = o.propertyName.name;
+        String rName = r.propertyName.name;
+        expect(rName, oName, reason: desc);
+        if (oName == 'length') {
+          compareElements(
+              r.propertyName.staticElement, o.propertyName.staticElement, desc);
+        }
+      } else if (o is PropertyAccess &&
+          o.target is PrefixedIdentifier &&
+          r is SimpleIdentifier) {
+        // We don't resynthesize property access when it takes the form
+        // `prefixName.className.staticMember`.  We just resynthesize a
+        // SimpleIdentifier correctly resolved to the static member.
+        PrefixedIdentifier oTarget = o.target;
+        checkElidablePrefix(oTarget.prefix);
+        checkElidablePrefix(oTarget.identifier);
+        compareConstAsts(r, o.propertyName, desc);
+      } else if (o is NullLiteral) {
+        expect(r, new isInstanceOf<NullLiteral>(), reason: desc);
+      } else if (o is BooleanLiteral && r is BooleanLiteral) {
+        expect(r.value, o.value, reason: desc);
+      } else if (o is IntegerLiteral && r is IntegerLiteral) {
+        expect(r.value, o.value, reason: desc);
+      } else if (o is DoubleLiteral && r is DoubleLiteral) {
+        if (r.value != null &&
+            r.value.isNaN &&
+            o.value != null &&
+            o.value.isNaN) {
+          // NaN is not comparable.
+        } else {
+          expect(r.value, o.value, reason: desc);
+        }
+      } else if (o is StringInterpolation && r is StringInterpolation) {
+        compareConstAstLists(r.elements, o.elements, desc);
+      } else if (o is StringLiteral && r is StringLiteral) {
+        // We don't keep all the tokens of AdjacentStrings.
+        // So, we can compare only their values.
+        expect(r.stringValue, o.stringValue, reason: desc);
+      } else if (o is SymbolLiteral && r is SymbolLiteral) {
+        // We don't keep all the tokens of symbol literals.
+        // So, we can compare only their values.
+        expect(r.components.map((t) => t.lexeme).join('.'),
+            o.components.map((t) => t.lexeme).join('.'),
+            reason: desc);
+      } else if (o is NamedExpression && r is NamedExpression) {
+        expect(r.name.label.name, o.name.label.name, reason: desc);
+        compareConstAsts(r.expression, o.expression, desc);
+      } else if (o is BinaryExpression && r is BinaryExpression) {
+        expect(r.operator.lexeme, o.operator.lexeme, reason: desc);
+        compareConstAsts(r.leftOperand, o.leftOperand, desc);
+        compareConstAsts(r.rightOperand, o.rightOperand, desc);
+      } else if (o is PrefixExpression && r is PrefixExpression) {
+        expect(r.operator.lexeme, o.operator.lexeme, reason: desc);
+        compareConstAsts(r.operand, o.operand, desc);
+      } else if (o is ConditionalExpression && r is ConditionalExpression) {
+        compareConstAsts(r.condition, o.condition, desc);
+        compareConstAsts(r.thenExpression, o.thenExpression, desc);
+        compareConstAsts(r.elseExpression, o.elseExpression, desc);
+      } else if (o is ListLiteral && r is ListLiteral) {
+        compareConstAstLists(
+            r.typeArguments?.arguments, o.typeArguments?.arguments, desc);
+        compareConstAstLists(r.elements, o.elements, desc);
+      } else if (o is MapLiteral && r is MapLiteral) {
+        compareConstAstLists(
+            r.typeArguments?.arguments, o.typeArguments?.arguments, desc);
+        compareConstAstLists(r.entries, o.entries, desc);
+      } else if (o is MethodInvocation && r is MethodInvocation) {
+        compareConstAsts(r.target, o.target, desc);
+        compareConstAsts(r.methodName, o.methodName, desc);
+        compareConstAstLists(
+            r.typeArguments?.arguments, o.typeArguments?.arguments, desc);
+        compareConstAstLists(
+            r.argumentList?.arguments, o.argumentList?.arguments, desc);
+      } else if (o is InstanceCreationExpression &&
+          r is InstanceCreationExpression) {
+        compareElements(r.staticElement, o.staticElement, desc);
+        ConstructorName oConstructor = o.constructorName;
+        ConstructorName rConstructor = r.constructorName;
+        expect(oConstructor, isNotNull, reason: desc);
+        expect(rConstructor, isNotNull, reason: desc);
+        // Note: just compare rConstructor.staticElement and
+        // oConstructor.staticElement as elements, because we just want to
+        // check that they're pointing to the correct elements; we don't want
+        // to check that their constructor initializers match, because that
+        // could lead to infinite regress.
+        compareElements(
+            rConstructor.staticElement, oConstructor.staticElement, desc);
+        TypeName oType = oConstructor.type;
+        TypeName rType = rConstructor.type;
+        expect(oType, isNotNull, reason: desc);
+        expect(rType, isNotNull, reason: desc);
+        compareConstAsts(rType.name, oType.name, desc);
+        compareConstAsts(rConstructor.name, oConstructor.name, desc);
+        // In strong mode type inference is performed, so that
+        // `C<int> v = new C();` is serialized as `C<int> v = new C<int>();`.
+        // So, if there are not type arguments originally, not need to check.
+        if (oType.typeArguments?.arguments?.isNotEmpty ?? false) {
+          compareConstAstLists(rType.typeArguments?.arguments,
+              oType.typeArguments?.arguments, desc);
+        }
+        compareConstAstLists(
+            r.argumentList.arguments, o.argumentList.arguments, desc);
+      } else if (o is AnnotationImpl && r is AnnotationImpl) {
+        expect(o.atSign.lexeme, r.atSign.lexeme, reason: desc);
+        Identifier rName = r.name;
+        Identifier oName = o.name;
+        if (oName is PrefixedIdentifier &&
+            o.constructorName != null &&
+            o.element != null) {
+          // E.g. `@prefix.cls.ctor`.  This gets resynthesized as `@cls.ctor`,
+          // with `cls.ctor` represented as a PrefixedIdentifier.
+          expect(rName, new isInstanceOf<PrefixedIdentifier>(), reason: desc);
+          if (rName is PrefixedIdentifier) {
+            compareConstAsts(rName.prefix, oName.identifier, desc);
+            expect(rName.period.lexeme, '.', reason: desc);
+            compareConstAsts(rName.identifier, o.constructorName, desc);
+            expect(r.period, isNull, reason: desc);
+            expect(r.constructorName, isNull, reason: desc);
+          }
+        } else {
+          compareConstAsts(r.name, o.name, desc);
+          expect(r.period?.lexeme, o.period?.lexeme, reason: desc);
+          compareConstAsts(r.constructorName, o.constructorName, desc);
+        }
+        compareConstAstLists(
+            r.arguments?.arguments, o.arguments?.arguments, desc);
+        compareElements(r.element, o.element, desc);
+        // elementAnnotation should be null; it is only used in the full AST.
+        expect(o.elementAnnotation, isNull);
+        expect(r.elementAnnotation, isNull);
+      } else {
+        fail('Not implemented for ${r.runtimeType} vs. ${o.runtimeType}');
+      }
+    }
+  }
+
+  void compareConstructorElements(ConstructorElement resynthesized,
+      ConstructorElement original, String desc) {
+    if (original == null && resynthesized == null) {
+      return;
+    }
+    compareExecutableElements(resynthesized, original, desc);
+    ConstructorElementImpl resynthesizedImpl =
+        getActualElement(resynthesized, desc);
+    ConstructorElementImpl originalImpl = getActualElement(original, desc);
+    if (original.isConst) {
+      compareConstAstLists(resynthesizedImpl.constantInitializers,
+          originalImpl.constantInitializers, desc);
+    }
+    if (original.redirectedConstructor == null) {
+      expect(resynthesized.redirectedConstructor, isNull, reason: desc);
+    } else {
+      compareConstructorElements(resynthesized.redirectedConstructor,
+          original.redirectedConstructor, '$desc redirectedConstructor');
+    }
+    checkPossibleMember(resynthesized, original, desc);
+    expect(resynthesized.nameEnd, original.nameEnd, reason: desc);
+    expect(resynthesized.periodOffset, original.periodOffset, reason: desc);
+    expect(resynthesizedImpl.isCycleFree, originalImpl.isCycleFree,
+        reason: desc);
+  }
+
+  void compareConstValues(
+      DartObject resynthesized, DartObject original, String desc) {
+    if (original == null) {
+      expect(resynthesized, isNull, reason: desc);
+    } else {
+      expect(resynthesized, isNotNull, reason: desc);
+      compareTypes(resynthesized.type, original.type, desc);
+      expect(resynthesized.hasKnownValue, original.hasKnownValue, reason: desc);
+      if (original.isNull) {
+        expect(resynthesized.isNull, isTrue, reason: desc);
+      } else if (original.toBoolValue() != null) {
+        expect(resynthesized.toBoolValue(), original.toBoolValue(),
+            reason: desc);
+      } else if (original.toIntValue() != null) {
+        expect(resynthesized.toIntValue(), original.toIntValue(), reason: desc);
+      } else if (original.toDoubleValue() != null) {
+        expect(resynthesized.toDoubleValue(), original.toDoubleValue(),
+            reason: desc);
+      } else if (original.toListValue() != null) {
+        List<DartObject> resynthesizedList = resynthesized.toListValue();
+        List<DartObject> originalList = original.toListValue();
+        expect(resynthesizedList, hasLength(originalList.length));
+        for (int i = 0; i < originalList.length; i++) {
+          compareConstValues(resynthesizedList[i], originalList[i], desc);
+        }
+      } else if (original.toMapValue() != null) {
+        Map<DartObject, DartObject> resynthesizedMap =
+            resynthesized.toMapValue();
+        Map<DartObject, DartObject> originalMap = original.toMapValue();
+        expect(resynthesizedMap, hasLength(originalMap.length));
+        List<DartObject> resynthesizedKeys = resynthesizedMap.keys.toList();
+        List<DartObject> originalKeys = originalMap.keys.toList();
+        for (int i = 0; i < originalKeys.length; i++) {
+          DartObject resynthesizedKey = resynthesizedKeys[i];
+          DartObject originalKey = originalKeys[i];
+          compareConstValues(resynthesizedKey, originalKey, desc);
+          DartObject resynthesizedValue = resynthesizedMap[resynthesizedKey];
+          DartObject originalValue = originalMap[originalKey];
+          compareConstValues(resynthesizedValue, originalValue, desc);
+        }
+      } else if (original.toStringValue() != null) {
+        expect(resynthesized.toStringValue(), original.toStringValue(),
+            reason: desc);
+      } else if (original.toSymbolValue() != null) {
+        expect(resynthesized.toSymbolValue(), original.toSymbolValue(),
+            reason: desc);
+      } else if (original.toTypeValue() != null) {
+        fail('Not implemented');
+      }
+    }
+  }
+
+  void compareElementAnnotations(ElementAnnotationImpl resynthesized,
+      ElementAnnotationImpl original, String desc) {
+    if (original.element == null) {
+      expect(resynthesized.element, isNull);
+    } else {
+      expect(resynthesized.element, isNotNull, reason: desc);
+      expect(resynthesized.element.kind, original.element.kind, reason: desc);
+      expect(resynthesized.element.location, original.element.location,
+          reason: desc);
+    }
+    expect(resynthesized.compilationUnit, isNotNull, reason: desc);
+    expect(resynthesized.compilationUnit.location,
+        original.compilationUnit.location,
+        reason: desc);
+    expect(resynthesized.annotationAst, isNotNull, reason: desc);
+    compareConstAsts(resynthesized.annotationAst, original.annotationAst, desc);
+  }
+
+  void compareElements(Element resynthesized, Element original, String desc) {
+    ElementImpl rImpl = getActualElement(resynthesized, desc);
+    ElementImpl oImpl = getActualElement(original, desc);
+    if (oImpl == null && rImpl == null) {
+      return;
+    }
+    if (oImpl is PrefixElement) {
+      // TODO(scheglov) prefixes cannot be resynthesized
+      return;
+    }
+    expect(original, isNotNull);
+    expect(resynthesized, isNotNull, reason: desc);
+    if (rImpl is DefaultParameterElementImpl && oImpl is ParameterElementImpl) {
+      // This is ok provided the resynthesized parameter element doesn't have
+      // any evaluation result.
+      expect(rImpl.evaluationResult, isNull);
+    } else {
+      Type rRuntimeType;
+      if (rImpl is ConstFieldElementImpl) {
+        rRuntimeType = ConstFieldElementImpl;
+      } else if (rImpl is FunctionElementImpl) {
+        rRuntimeType = FunctionElementImpl;
+      } else {
+        rRuntimeType = rImpl.runtimeType;
+      }
+      expect(rRuntimeType, oImpl.runtimeType);
+    }
+    expect(resynthesized.kind, original.kind);
+    expect(resynthesized.location, original.location, reason: desc);
+    expect(resynthesized.name, original.name);
+    expect(resynthesized.nameOffset, original.nameOffset, reason: desc);
+    expect(rImpl.codeOffset, oImpl.codeOffset, reason: desc);
+    expect(rImpl.codeLength, oImpl.codeLength, reason: desc);
+    expect(resynthesized.documentationComment, original.documentationComment,
+        reason: desc);
+    compareMetadata(resynthesized.metadata, original.metadata, desc);
+
+    // Validate modifiers.
+    for (Modifier modifier in Modifier.values) {
+      bool got = _hasModifier(resynthesized, modifier);
+      bool want = _hasModifier(original, modifier);
+      expect(got, want,
+          reason: 'Mismatch in $desc.$modifier: got $got, want $want');
+    }
+
+    // Validate members.
+    if (oImpl is Member) {
+      expect(rImpl, new isInstanceOf<Member>(), reason: desc);
+    } else {
+      expect(rImpl, isNot(new isInstanceOf<Member>()), reason: desc);
+    }
+  }
+
+  void compareExecutableElements(
+      ExecutableElement resynthesized, ExecutableElement original, String desc,
+      {bool shallow: false}) {
+    compareElements(resynthesized, original, desc);
+    compareParameterElementLists(
+        resynthesized.parameters, original.parameters, desc);
+    if (!original.hasImplicitReturnType) {
+      compareTypes(
+          resynthesized.returnType, original.returnType, '$desc return type');
+    }
+    if (!shallow) {
+      compareTypes(resynthesized.type, original.type, desc);
+    }
+    expect(resynthesized.typeParameters.length, original.typeParameters.length);
+    for (int i = 0; i < resynthesized.typeParameters.length; i++) {
+      compareTypeParameterElements(
+          resynthesized.typeParameters[i],
+          original.typeParameters[i],
+          '$desc type parameter ${original.typeParameters[i].name}');
+    }
+    compareLocalElementsOfExecutable(resynthesized, original, desc);
+  }
+
+  void compareExportElements(ExportElementImpl resynthesized,
+      ExportElementImpl original, String desc) {
+    compareUriReferencedElements(resynthesized, original, desc);
+    expect(resynthesized.exportedLibrary.location,
+        original.exportedLibrary.location);
+    expect(resynthesized.combinators.length, original.combinators.length);
+    for (int i = 0; i < resynthesized.combinators.length; i++) {
+      compareNamespaceCombinators(
+          resynthesized.combinators[i], original.combinators[i]);
+    }
+  }
+
+  void compareFieldElements(
+      FieldElementImpl resynthesized, FieldElementImpl original, String desc) {
+    comparePropertyInducingElements(resynthesized, original, desc);
+  }
+
+  void compareFunctionElements(
+      FunctionElement resynthesized, FunctionElement original, String desc,
+      {bool shallow: false}) {
+    if (original == null && resynthesized == null) {
+      return;
+    }
+    expect(resynthesized, isNotNull, reason: desc);
+    compareExecutableElements(resynthesized, original, desc, shallow: shallow);
+    checkPossibleLocalElements(resynthesized, original);
+  }
+
+  void compareFunctionTypeAliasElements(
+      FunctionTypeAliasElementImpl resynthesized,
+      FunctionTypeAliasElementImpl original,
+      String desc) {
+    compareElements(resynthesized, original, desc);
+    compareParameterElementLists(
+        resynthesized.parameters, original.parameters, desc);
+    compareTypes(
+        resynthesized.returnType, original.returnType, '$desc return type');
+    compareTypes(resynthesized.type, original.type, desc);
+    expect(resynthesized.typeParameters.length, original.typeParameters.length);
+    for (int i = 0; i < resynthesized.typeParameters.length; i++) {
+      compareTypeParameterElements(
+          resynthesized.typeParameters[i],
+          original.typeParameters[i],
+          '$desc type parameter ${original.typeParameters[i].name}');
+    }
+  }
+
+  void compareImportElements(ImportElementImpl resynthesized,
+      ImportElementImpl original, String desc) {
+    compareUriReferencedElements(resynthesized, original, desc);
+    expect(resynthesized.importedLibrary.location,
+        original.importedLibrary.location,
+        reason: '$desc importedLibrary location');
+    expect(resynthesized.prefixOffset, original.prefixOffset,
+        reason: '$desc prefixOffset');
+    if (original.prefix == null) {
+      expect(resynthesized.prefix, isNull, reason: '$desc prefix');
+    } else {
+      comparePrefixElements(
+          resynthesized.prefix, original.prefix, original.prefix.name);
+    }
+    expect(resynthesized.combinators.length, original.combinators.length,
+        reason: '$desc combinators');
+    for (int i = 0; i < resynthesized.combinators.length; i++) {
+      compareNamespaceCombinators(
+          resynthesized.combinators[i], original.combinators[i]);
+    }
+  }
+
+  void compareLabelElements(
+      LabelElementImpl resynthesized, LabelElementImpl original, String desc) {
+    expect(resynthesized.isOnSwitchMember, original.isOnSwitchMember,
+        reason: desc);
+    expect(resynthesized.isOnSwitchStatement, original.isOnSwitchStatement,
+        reason: desc);
+    compareElements(resynthesized, original, desc);
+  }
+
+  void compareLocalElementsOfExecutable(ExecutableElement resynthesized,
+      ExecutableElement original, String desc) {
+    if (original is! Member) {
+      List<FunctionElement> rFunctions = resynthesized.functions;
+      List<FunctionElement> oFunctions = original.functions;
+      expect(rFunctions, hasLength(oFunctions.length));
+      for (int i = 0; i < oFunctions.length; i++) {
+        compareFunctionElements(rFunctions[i], oFunctions[i],
+            '$desc local function ${oFunctions[i].name}');
+      }
+    }
+    if (original is! Member) {
+      List<LabelElement> rLabels = resynthesized.labels;
+      List<LabelElement> oLabels = original.labels;
+      expect(rLabels, hasLength(oLabels.length));
+      for (int i = 0; i < oLabels.length; i++) {
+        compareLabelElements(
+            rLabels[i], oLabels[i], '$desc label ${oLabels[i].name}');
+      }
+    }
+    if (original is! Member) {
+      List<LocalVariableElement> rVariables = resynthesized.localVariables;
+      List<LocalVariableElement> oVariables = original.localVariables;
+      expect(rVariables, hasLength(oVariables.length));
+      for (int i = 0; i < oVariables.length; i++) {
+        compareVariableElements(rVariables[i], oVariables[i],
+            '$desc local variable ${oVariables[i].name}');
+      }
+    }
+  }
+
+  void compareMetadata(List<ElementAnnotation> resynthesized,
+      List<ElementAnnotation> original, String desc) {
+    expect(resynthesized, hasLength(original.length), reason: desc);
+    for (int i = 0; i < original.length; i++) {
+      compareElementAnnotations(
+          resynthesized[i], original[i], '$desc annotation $i');
+    }
+  }
+
+  void compareMethodElements(MethodElementImpl resynthesized,
+      MethodElementImpl original, String desc) {
+    // TODO(paulberry): do we need to deal with
+    // MultiplyInheritedMethodElementImpl?
+    compareExecutableElements(resynthesized, original, desc);
+  }
+
+  void compareNamespaceCombinators(
+      NamespaceCombinator resynthesized, NamespaceCombinator original) {
+    if (original is ShowElementCombinatorImpl &&
+        resynthesized is ShowElementCombinatorImpl) {
+      expect(resynthesized.shownNames, original.shownNames,
+          reason: 'shownNames');
+      expect(resynthesized.offset, original.offset, reason: 'offset');
+      expect(resynthesized.end, original.end, reason: 'end');
+    } else if (original is HideElementCombinatorImpl &&
+        resynthesized is HideElementCombinatorImpl) {
+      expect(resynthesized.hiddenNames, original.hiddenNames,
+          reason: 'hiddenNames');
+    } else if (resynthesized.runtimeType != original.runtimeType) {
+      fail(
+          'Type mismatch: expected ${original.runtimeType}, got ${resynthesized.runtimeType}');
+    } else {
+      fail('Unimplemented comparison for ${original.runtimeType}');
+    }
+  }
+
+  void compareNamespaces(
+      Namespace resynthesized, Namespace original, String desc) {
+    Map<String, Element> resynthesizedMap = resynthesized.definedNames;
+    Map<String, Element> originalMap = original.definedNames;
+    expect(resynthesizedMap.keys.toSet(), originalMap.keys.toSet(),
+        reason: desc);
+    for (String key in originalMap.keys) {
+      Element resynthesizedElement = resynthesizedMap[key];
+      Element originalElement = originalMap[key];
+      compareElements(resynthesizedElement, originalElement, key);
+    }
+  }
+
+  void compareParameterElementLists(
+      List<ParameterElement> resynthesizedParameters,
+      List<ParameterElement> originalParameters,
+      String desc) {
+    expect(resynthesizedParameters.length, originalParameters.length);
+    for (int i = 0; i < resynthesizedParameters.length; i++) {
+      compareParameterElements(
+          resynthesizedParameters[i],
+          originalParameters[i],
+          '$desc parameter ${originalParameters[i].name}');
+    }
+  }
+
+  void compareParameterElements(
+      ParameterElement resynthesized, ParameterElement original, String desc) {
+    compareVariableElements(resynthesized, original, desc);
+    compareParameterElementLists(
+        resynthesized.parameters, original.parameters, desc);
+    expect(resynthesized.parameterKind, original.parameterKind, reason: desc);
+    expect(resynthesized.isInitializingFormal, original.isInitializingFormal,
+        reason: desc);
+    expect(resynthesized is FieldFormalParameterElementImpl,
+        original is FieldFormalParameterElementImpl);
+    if (resynthesized is FieldFormalParameterElementImpl &&
+        original is FieldFormalParameterElementImpl) {
+      if (original.field == null) {
+        expect(resynthesized.field, isNull, reason: '$desc field');
+      } else {
+        expect(resynthesized.field, isNotNull, reason: '$desc field');
+        compareFieldElements(
+            resynthesized.field, original.field, '$desc field');
+      }
+    }
+    expect(resynthesized.defaultValueCode, original.defaultValueCode,
+        reason: desc);
+    expect(resynthesized.isCovariant, original.isCovariant, reason: desc);
+    ParameterElementImpl resynthesizedActual =
+        getActualElement(resynthesized, desc);
+    ParameterElementImpl originalActual = getActualElement(original, desc);
+    compareFunctionElements(
+        resynthesizedActual.initializer, originalActual.initializer, desc);
+  }
+
+  void comparePrefixElements(PrefixElementImpl resynthesized,
+      PrefixElementImpl original, String desc) {
+    compareElements(resynthesized, original, desc);
+  }
+
+  void comparePropertyAccessorElements(
+      PropertyAccessorElementImpl resynthesized,
+      PropertyAccessorElementImpl original,
+      String desc) {
+    // TODO(paulberry): do I need to worry about
+    // MultiplyInheritedPropertyAccessorElementImpl?
+    compareExecutableElements(resynthesized, original, desc);
+    expect(resynthesized.variable, isNotNull);
+    expect(resynthesized.variable.location, original.variable.location);
+  }
+
+  void comparePropertyInducingElements(
+      PropertyInducingElementImpl resynthesized,
+      PropertyInducingElementImpl original,
+      String desc) {
+    compareVariableElements(resynthesized, original, desc);
+    if (original.getter == null) {
+      expect(resynthesized.getter, isNull);
+    } else {
+      expect(resynthesized.getter, isNotNull);
+      expect(resynthesized.getter.location, original.getter.location);
+    }
+    if (original.setter == null) {
+      expect(resynthesized.setter, isNull);
+    } else {
+      expect(resynthesized.setter, isNotNull);
+      expect(resynthesized.setter.location, original.setter.location);
+    }
+  }
+
+  void compareTopLevelVariableElements(
+      TopLevelVariableElementImpl resynthesized,
+      TopLevelVariableElementImpl original,
+      String desc) {
+    comparePropertyInducingElements(resynthesized, original, desc);
+  }
+
+  void compareTypeImpls(
+      TypeImpl resynthesized, TypeImpl original, String desc) {
+    expect(resynthesized.element.location, original.element.location,
+        reason: desc);
+    expect(resynthesized.name, original.name, reason: desc);
+  }
+
+  void compareTypeParameterElements(TypeParameterElement resynthesized,
+      TypeParameterElement original, String desc) {
+    compareElements(resynthesized, original, desc);
+    compareTypes(resynthesized.type, original.type, desc);
+    compareTypes(resynthesized.bound, original.bound, '$desc bound');
+  }
+
+  void compareTypes(DartType resynthesized, DartType original, String desc) {
+    if (original == null) {
+      expect(resynthesized, isNull, reason: desc);
+    } else if (resynthesized is InterfaceTypeImpl &&
+        original is InterfaceTypeImpl) {
+      compareTypeImpls(resynthesized, original, desc);
+      expect(resynthesized.typeArguments.length, original.typeArguments.length);
+      for (int i = 0; i < resynthesized.typeArguments.length; i++) {
+        compareTypes(resynthesized.typeArguments[i], original.typeArguments[i],
+            '$desc type argument ${original.typeArguments[i].name}');
+      }
+    } else if (resynthesized is TypeParameterTypeImpl &&
+        original is TypeParameterTypeImpl) {
+      compareTypeImpls(resynthesized, original, desc);
+    } else if (resynthesized is DynamicTypeImpl &&
+        original is DynamicTypeImpl) {
+      expect(resynthesized, same(original));
+    } else if (resynthesized is UndefinedTypeImpl &&
+        original is UndefinedTypeImpl) {
+      expect(resynthesized, same(original));
+    } else if (resynthesized is FunctionTypeImpl &&
+        original is FunctionTypeImpl) {
+      compareTypeImpls(resynthesized, original, desc);
+      expect(resynthesized.isInstantiated, original.isInstantiated,
+          reason: desc);
+      if (original.element.isSynthetic &&
+          original.element is FunctionTypeAliasElementImpl &&
+          resynthesized.element is FunctionTypeAliasElementImpl) {
+        compareFunctionTypeAliasElements(
+            resynthesized.element, original.element, desc);
+      }
+      if (original.element.enclosingElement == null &&
+          original.element is FunctionElement) {
+        expect(resynthesized.element, new isInstanceOf<FunctionElement>());
+        expect(resynthesized.element.enclosingElement, isNull, reason: desc);
+        compareFunctionElements(
+            resynthesized.element, original.element, '$desc element',
+            shallow: true);
+        expect(resynthesized.element.type, same(resynthesized));
+      }
+      expect(resynthesized.typeArguments.length, original.typeArguments.length,
+          reason: '$desc typeArguments.length');
+      for (int i = 0; i < resynthesized.typeArguments.length; i++) {
+        if (resynthesized.typeArguments[i].isDynamic &&
+            original.typeArguments[i] is TypeParameterType) {
+          // It's ok for type arguments to get converted to `dynamic` if they
+          // are not used.
+          expect(
+              isTypeParameterUsed(
+                  original.typeArguments[i], original.element.type),
+              isFalse);
+        } else {
+          compareTypes(
+              resynthesized.typeArguments[i],
+              original.typeArguments[i],
+              '$desc type argument ${original.typeArguments[i].name}');
+        }
+      }
+      if (original.typeParameters == null) {
+        expect(resynthesized.typeParameters, isNull, reason: desc);
+      } else {
+        expect(resynthesized.typeParameters, isNotNull, reason: desc);
+        expect(
+            resynthesized.typeParameters.length, original.typeParameters.length,
+            reason: desc);
+        for (int i = 0; i < resynthesized.typeParameters.length; i++) {
+          compareTypeParameterElements(resynthesized.typeParameters[i],
+              original.typeParameters[i], '$desc type parameter $i');
+        }
+      }
+      expect(resynthesized.typeFormals.length, original.typeFormals.length,
+          reason: desc);
+      for (int i = 0; i < resynthesized.typeFormals.length; i++) {
+        compareTypeParameterElements(resynthesized.typeFormals[i],
+            original.typeFormals[i], '$desc bound type parameter $i');
+      }
+    } else if (resynthesized is VoidTypeImpl && original is VoidTypeImpl) {
+      expect(resynthesized, same(original));
+    } else if (resynthesized is DynamicTypeImpl &&
+        original is UndefinedTypeImpl) {
+      // TODO(scheglov) In the strong mode constant variable like
+      //  `var V = new Unresolved()` gets `UndefinedTypeImpl`, and it gets
+      // `DynamicTypeImpl` in the spec mode.
+    } else if (resynthesized is BottomTypeImpl && original is BottomTypeImpl) {
+      expect(resynthesized, same(original));
+    } else if (resynthesized.runtimeType != original.runtimeType) {
+      fail('Type mismatch: expected ${original.runtimeType},'
+          ' got ${resynthesized.runtimeType} ($desc)');
+    } else {
+      fail('Unimplemented comparison for ${original.runtimeType}');
+    }
+  }
+
+  void compareUriReferencedElements(UriReferencedElementImpl resynthesized,
+      UriReferencedElementImpl original, String desc) {
+    compareElements(resynthesized, original, desc);
+    expect(resynthesized.uri, original.uri, reason: '$desc uri');
+    expect(resynthesized.uriOffset, original.uriOffset,
+        reason: '$desc uri uriOffset');
+    expect(resynthesized.uriEnd, original.uriEnd, reason: '$desc uriEnd');
+  }
+
+  void compareVariableElements(
+      VariableElement resynthesized, VariableElement original, String desc) {
+    compareElements(resynthesized, original, desc);
+    compareTypes(resynthesized.type, original.type, desc);
+    VariableElementImpl resynthesizedActual =
+        getActualElement(resynthesized, desc);
+    VariableElementImpl originalActual = getActualElement(original, desc);
+    compareFunctionElements(resynthesizedActual.initializer,
+        originalActual.initializer, '$desc initializer');
+    if (originalActual is ConstVariableElement) {
+      Element oEnclosing = original.enclosingElement;
+      if (oEnclosing is ClassElement && oEnclosing.isEnum) {
+        compareConstValues(
+            resynthesized.constantValue, original.constantValue, desc);
+      } else {
+        Expression initializer = resynthesizedActual.constantInitializer;
+        if (variablesWithNotConstInitializers.contains(resynthesized.name)) {
+          _assertUnresolvedIdentifier(initializer, desc);
+        } else {
+          compareConstAsts(initializer, originalActual.constantInitializer,
+              '$desc initializer');
+        }
+      }
+    }
+    checkPossibleMember(resynthesized, original, desc);
+    checkPossibleLocalElements(resynthesized, original);
+  }
+
+  DartSdk createDartSdk() => AbstractContextTest.SHARED_MOCK_SDK;
+
+  /**
+   * Determine the analysis options that should be used for this test.
+   */
+  AnalysisOptionsImpl createOptions() =>
+      new AnalysisOptionsImpl()..enableGenericMethods = true;
+
+  ElementImpl getActualElement(Element element, String desc) {
+    if (element == null) {
+      return null;
+    } else if (element is ElementImpl) {
+      return element;
+    } else if (element is ElementHandle) {
+      Element actualElement = element.actualElement;
+      // A handle should never point to a member, because if it did, then
+      // "is Member" checks on the handle would produce the wrong result.
+      expect(actualElement, isNot(new isInstanceOf<Member>()), reason: desc);
+      return getActualElement(actualElement, desc);
+    } else if (element is Member) {
+      return getActualElement(element.baseElement, desc);
+    } else {
+      fail('Unexpected type for resynthesized ($desc):'
+          ' ${element.runtimeType}');
+      return null;
+    }
+  }
+
+  /**
+   * Determine if [type] makes use of the given [typeParameter].
+   */
+  bool isTypeParameterUsed(TypeParameterType typeParameter, DartType type) {
+    if (type is FunctionType) {
+      return isTypeParameterUsed(typeParameter, type.returnType) ||
+          type.parameters.any((ParameterElement e) =>
+              isTypeParameterUsed(typeParameter, e.type));
+    } else if (type is InterfaceType) {
+      return type.typeArguments
+          .any((DartType t) => isTypeParameterUsed(typeParameter, t));
+    } else if (type is TypeParameterType) {
+      return type == typeParameter;
+    } else {
+      expect(type.isDynamic || type.isVoid, isTrue);
+      return false;
+    }
+  }
+
+  @override
+  void setUp() {
+    super.setUp();
+    prepareAnalysisContext(createOptions());
+  }
+
+  void _assertUnresolvedIdentifier(Expression initializer, String desc) {
+    expect(initializer, new isInstanceOf<SimpleIdentifier>(), reason: desc);
+    SimpleIdentifier identifier = initializer;
+    expect(identifier.staticElement, isNull, reason: desc);
+  }
+
+  List<PropertyAccessorElement> _getSortedPropertyAccessors(
+      ClassElement classElement) {
+    List<PropertyAccessorElement> accessors = classElement.accessors.toList();
+    accessors.sort((a, b) => a.displayName.compareTo(b.displayName));
+    return accessors;
+  }
+
+  bool _hasModifier(Element element, Modifier modifier) {
+    if (modifier == Modifier.ABSTRACT) {
+      if (element is ClassElement) {
+        return element.isAbstract;
+      }
+      if (element is ExecutableElement) {
+        return element.isAbstract;
+      }
+      return false;
+    } else if (modifier == Modifier.ASYNCHRONOUS) {
+      if (element is ExecutableElement) {
+        return element.isAsynchronous;
+      }
+      return false;
+    } else if (modifier == Modifier.CONST) {
+      if (element is VariableElement) {
+        return element.isConst;
+      }
+      return false;
+    } else if (modifier == Modifier.DEFERRED) {
+      if (element is ImportElement) {
+        return element.isDeferred;
+      }
+      return false;
+    } else if (modifier == Modifier.ENUM) {
+      if (element is ClassElement) {
+        return element.isEnum;
+      }
+      return false;
+    } else if (modifier == Modifier.EXTERNAL) {
+      if (element is ExecutableElement) {
+        return element.isExternal;
+      }
+      return false;
+    } else if (modifier == Modifier.FACTORY) {
+      if (element is ConstructorElement) {
+        return element.isFactory;
+      }
+      return false;
+    } else if (modifier == Modifier.FINAL) {
+      if (element is VariableElement) {
+        return element.isFinal;
+      }
+      return false;
+    } else if (modifier == Modifier.GENERATOR) {
+      if (element is ExecutableElement) {
+        return element.isGenerator;
+      }
+      return false;
+    } else if (modifier == Modifier.GETTER) {
+      if (element is PropertyAccessorElement) {
+        return element.isGetter;
+      }
+      return false;
+    } else if (modifier == Modifier.HAS_EXT_URI) {
+      if (element is LibraryElement) {
+        return element.hasExtUri;
+      }
+      return false;
+    } else if (modifier == Modifier.IMPLICIT_TYPE) {
+      if (element is ExecutableElement) {
+        return element.hasImplicitReturnType;
+      }
+      return false;
+    } else if (modifier == Modifier.MIXIN_APPLICATION) {
+      if (element is ClassElement) {
+        return element.isMixinApplication;
+      }
+      return false;
+    } else if (modifier == Modifier.REFERENCES_SUPER) {
+      if (element is ClassElement) {
+        return element.hasReferenceToSuper;
+      }
+      return false;
+    } else if (modifier == Modifier.SETTER) {
+      if (element is PropertyAccessorElement) {
+        return element.isSetter;
+      }
+      return false;
+    } else if (modifier == Modifier.STATIC) {
+      if (element is ExecutableElement) {
+        return element.isStatic;
+      }
+      return false;
+    } else if (modifier == Modifier.SYNTHETIC) {
+      return element.isSynthetic;
+    }
+    throw new UnimplementedError(
+        'Modifier $modifier for ${element?.runtimeType}');
+  }
+}
+
+@reflectiveTest
+abstract class ResynthesizeTest extends AbstractResynthesizeTest {
+  LibraryElementImpl checkLibrary(String text,
+      {bool allowErrors: false, bool dumpSummaries: false});
+
+  /**
+   * Return a [SummaryResynthesizer] to resynthesize the library with the
+   * given [librarySource].
+   */
+  SummaryResynthesizer encodeDecodeLibrarySource(Source librarySource);
+
+  fail_library_hasExtUri() {
+    checkLibrary('import "dart-ext:doesNotExist.dart";');
+  }
+
+  test_class_abstract() {
+    checkLibrary('abstract class C {}');
+  }
+
+  test_class_alias() {
+    checkLibrary('class C = D with E, F; class D {} class E {} class F {}');
+  }
+
+  test_class_alias_abstract() {
+    checkLibrary('abstract class C = D with E; class D {} class E {}');
+  }
+
+  test_class_alias_documented() {
+    checkLibrary('''
+// Extra comment so doc comment offset != 0
+/**
+ * Docs
+ */
+class C = D with E;
+
+class D {}
+class E {}''');
+  }
+
+  test_class_alias_with_forwarding_constructors() {
+    addLibrarySource(
+        '/a.dart',
+        '''
+class Base {
+  Base._priv();
+  Base();
+  Base.noArgs();
+  Base.requiredArg(x);
+  Base.positionalArg([x]);
+  Base.namedArg({x});
+  factory Base.fact() => null;
+  factory Base.fact2() = Base.noArgs;
+}
+''');
+    checkLibrary('''
+import "a.dart";
+class M {}
+class MixinApp = Base with M;
+''');
+  }
+
+  test_class_alias_with_forwarding_constructors_type_substitution() {
+    checkLibrary('''
+class Base<T> {
+  Base.ctor(T t, List<T> l);
+}
+class M {}
+class MixinApp = Base with M;
+''');
+  }
+
+  test_class_alias_with_forwarding_constructors_type_substitution_complex() {
+    checkLibrary('''
+class Base<T> {
+  Base.ctor(T t, List<T> l);
+}
+class M {}
+class MixinApp<U> = Base<List<U>> with M;
+''');
+  }
+
+  test_class_alias_with_mixin_members() {
+    checkLibrary('''
+class C = D with E;
+class D {}
+class E {
+  int get a => null;
+  void set b(int i) {}
+  void f() {}
+  int x;
+}''');
+  }
+
+  test_class_constructor_const() {
+    checkLibrary('class C { const C(); }');
+  }
+
+  test_class_constructor_const_external() {
+    checkLibrary('class C { external const C(); }');
+  }
+
+  test_class_constructor_explicit_named() {
+    checkLibrary('class C { C.foo(); }');
+  }
+
+  test_class_constructor_explicit_type_params() {
+    checkLibrary('class C<T, U> { C(); }');
+  }
+
+  test_class_constructor_explicit_unnamed() {
+    checkLibrary('class C { C(); }');
+  }
+
+  test_class_constructor_external() {
+    checkLibrary('class C { external C(); }');
+  }
+
+  test_class_constructor_factory() {
+    checkLibrary('class C { factory C() => null; }');
+  }
+
+  test_class_constructor_field_formal_dynamic_dynamic() {
+    checkLibrary('class C { dynamic x; C(dynamic this.x); }');
+  }
+
+  test_class_constructor_field_formal_dynamic_typed() {
+    checkLibrary('class C { dynamic x; C(int this.x); }');
+  }
+
+  test_class_constructor_field_formal_dynamic_untyped() {
+    checkLibrary('class C { dynamic x; C(this.x); }');
+  }
+
+  test_class_constructor_field_formal_multiple_matching_fields() {
+    // This is a compile-time error but it should still analyze consistently.
+    checkLibrary('class C { C(this.x); int x; String x; }', allowErrors: true);
+  }
+
+  test_class_constructor_field_formal_no_matching_field() {
+    // This is a compile-time error but it should still analyze consistently.
+    checkLibrary('class C { C(this.x); }', allowErrors: true);
+  }
+
+  test_class_constructor_field_formal_typed_dynamic() {
+    checkLibrary('class C { num x; C(dynamic this.x); }', allowErrors: true);
+  }
+
+  test_class_constructor_field_formal_typed_typed() {
+    checkLibrary('class C { num x; C(int this.x); }');
+  }
+
+  test_class_constructor_field_formal_typed_untyped() {
+    checkLibrary('class C { num x; C(this.x); }');
+  }
+
+  test_class_constructor_field_formal_untyped_dynamic() {
+    checkLibrary('class C { var x; C(dynamic this.x); }');
+  }
+
+  test_class_constructor_field_formal_untyped_typed() {
+    checkLibrary('class C { var x; C(int this.x); }');
+  }
+
+  test_class_constructor_field_formal_untyped_untyped() {
+    checkLibrary('class C { var x; C(this.x); }');
+  }
+
+  test_class_constructor_fieldFormal_named_noDefault() {
+    checkLibrary('class C { int x; C({this.x}); }');
+  }
+
+  test_class_constructor_fieldFormal_named_withDefault() {
+    checkLibrary('class C { int x; C({this.x: 42}); }');
+  }
+
+  test_class_constructor_fieldFormal_optional_noDefault() {
+    checkLibrary('class C { int x; C([this.x]); }');
+  }
+
+  test_class_constructor_fieldFormal_optional_withDefault() {
+    checkLibrary('class C { int x; C([this.x = 42]); }');
+  }
+
+  test_class_constructor_implicit() {
+    checkLibrary('class C {}');
+  }
+
+  test_class_constructor_implicit_type_params() {
+    checkLibrary('class C<T, U> {}');
+  }
+
+  test_class_constructor_params() {
+    checkLibrary('class C { C(x, y); }');
+  }
+
+  test_class_constructors() {
+    checkLibrary('class C { C.foo(); C.bar(); }');
+  }
+
+  test_class_documented() {
+    checkLibrary('''
+// Extra comment so doc comment offset != 0
+/**
+ * Docs
+ */
+class C {}''');
+  }
+
+  test_class_documented_with_references() {
+    checkLibrary('''
+/**
+ * Docs referring to [D] and [E]
+ */
+class C {}
+
+class D {}
+class E {}''');
+  }
+
+  test_class_documented_with_windows_line_endings() {
+    checkLibrary('/**\r\n * Docs\r\n */\r\nclass C {}');
+  }
+
+  test_class_field_const() {
+    checkLibrary('class C { static const int i = 0; }');
+  }
+
+  test_class_field_implicit_type() {
+    checkLibrary('class C { var x; }');
+  }
+
+  test_class_field_static() {
+    checkLibrary('class C { static int i; }');
+  }
+
+  test_class_fields() {
+    checkLibrary('class C { int i; int j; }');
+  }
+
+  test_class_getter_abstract() {
+    checkLibrary('abstract class C { int get x; }');
+  }
+
+  test_class_getter_external() {
+    checkLibrary('class C { external int get x; }');
+  }
+
+  test_class_getter_implicit_return_type() {
+    checkLibrary('class C { get x => null; }');
+  }
+
+  test_class_getter_static() {
+    checkLibrary('class C { static int get x => null; }');
+  }
+
+  test_class_getters() {
+    checkLibrary('class C { int get x => null; get y => null; }');
+  }
+
+  test_class_implicitField_getterFirst() {
+    checkLibrary('class C { int get x => 0; void set x(int value) {} }');
+  }
+
+  test_class_implicitField_setterFirst() {
+    checkLibrary('class C { void set x(int value) {} int get x => 0; }');
+  }
+
+  test_class_interfaces() {
+    checkLibrary('class C implements D, E {} class D {} class E {}');
+  }
+
+  test_class_interfaces_unresolved() {
+    checkLibrary('class C implements X, Y, Z {} class X {} class Z {}',
+        allowErrors: true);
+  }
+
+  test_class_method_abstract() {
+    checkLibrary('abstract class C { f(); }');
+  }
+
+  test_class_method_external() {
+    checkLibrary('class C { external f(); }');
+  }
+
+  test_class_method_params() {
+    checkLibrary('class C { f(x, y) {} }');
+  }
+
+  test_class_method_static() {
+    checkLibrary('class C { static f() {} }');
+  }
+
+  test_class_methods() {
+    checkLibrary('class C { f() {} g() {} }');
+  }
+
+  test_class_mixins() {
+    checkLibrary('class C extends Object with D, E {} class D {} class E {}');
+  }
+
+  test_class_mixins_unresolved() {
+    checkLibrary('class C extends Object with X, Y, Z; class X {} class Z {}',
+        allowErrors: true);
+  }
+
+  test_class_setter_abstract() {
+    checkLibrary('abstract class C { void set x(int value); }');
+  }
+
+  test_class_setter_external() {
+    checkLibrary('class C { external void set x(int value); }');
+  }
+
+  test_class_setter_implicit_param_type() {
+    checkLibrary('class C { void set x(value) {} }');
+  }
+
+  test_class_setter_implicit_return_type() {
+    checkLibrary('class C { set x(int value) {} }');
+  }
+
+  test_class_setter_static() {
+    checkLibrary('class C { static void set x(int value) {} }');
+  }
+
+  test_class_setters() {
+    checkLibrary('class C { void set x(int value) {} set y(value) {} }');
+  }
+
+  test_class_supertype() {
+    checkLibrary('class C extends D {} class D {}');
+  }
+
+  test_class_supertype_unresolved() {
+    checkLibrary('class C extends D {}', allowErrors: true);
+  }
+
+  test_class_type_parameters() {
+    checkLibrary('class C<T, U> {}');
+  }
+
+  test_class_type_parameters_bound() {
+    checkLibrary('class C<T extends Object, U extends D> {} class D {}');
+  }
+
+  test_class_type_parameters_f_bound_complex() {
+    checkLibrary('class C<T extends List<U>, U> {}');
+  }
+
+  test_class_type_parameters_f_bound_simple() {
+    checkLibrary('class C<T extends U, U> {}');
+  }
+
+  test_classes() {
+    checkLibrary('class C {} class D {}');
+  }
+
+  test_closure_executable_with_return_type_from_closure() {
+    checkLibrary('''
+f() {
+  print(() {});
+  print(() => () => 0);
+}
+''');
+  }
+
+  test_const_invalid_field_const() {
+    variablesWithNotConstInitializers.add('f');
+    checkLibrary(
+        r'''
+class C {
+  static const f = 1 + foo();
+}
+int foo() => 42;
+''',
+        allowErrors: true);
+  }
+
+  test_const_invalid_field_final() {
+    variablesWithNotConstInitializers.add('f');
+    checkLibrary(
+        r'''
+class C {
+  final f = 1 + foo();
+}
+int foo() => 42;
+''',
+        allowErrors: true);
+  }
+
+  test_const_invalid_topLevel() {
+    variablesWithNotConstInitializers.add('v');
+    checkLibrary(
+        r'''
+const v = 1 + foo();
+int foo() => 42;
+''',
+        allowErrors: true);
+  }
+
+  test_const_invokeConstructor_generic_named() {
+    checkLibrary(r'''
+class C<K, V> {
+  const C.named(K k, V v);
+}
+const V = const C<int, String>.named(1, '222');
+''');
+  }
+
+  test_const_invokeConstructor_generic_named_imported() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C<K, V> {
+  const C.named(K k, V v);
+}
+''');
+    checkLibrary(r'''
+import 'a.dart';
+const V = const C<int, String>.named(1, '222');
+''');
+  }
+
+  test_const_invokeConstructor_generic_named_imported_withPrefix() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C<K, V> {
+  const C.named(K k, V v);
+}
+''');
+    checkLibrary(r'''
+import 'a.dart' as p;
+const V = const p.C<int, String>.named(1, '222');
+''');
+  }
+
+  test_const_invokeConstructor_generic_noTypeArguments() {
+    checkLibrary(r'''
+class C<K, V> {
+  const C();
+}
+const V = const C();
+''');
+  }
+
+  test_const_invokeConstructor_generic_unnamed() {
+    checkLibrary(r'''
+class C<K, V> {
+  const C();
+}
+const V = const C<int, String>();
+''');
+  }
+
+  test_const_invokeConstructor_generic_unnamed_imported() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C<K, V> {
+  const C();
+}
+''');
+    checkLibrary(r'''
+import 'a.dart';
+const V = const C<int, String>();
+''');
+  }
+
+  test_const_invokeConstructor_generic_unnamed_imported_withPrefix() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C<K, V> {
+  const C();
+}
+''');
+    checkLibrary(r'''
+import 'a.dart' as p;
+const V = const p.C<int, String>();
+''');
+  }
+
+  test_const_invokeConstructor_named() {
+    checkLibrary(r'''
+class C {
+  const C.named(bool a, int b, int c, {String d, double e});
+}
+const V = const C.named(true, 1, 2, d: 'ccc', e: 3.4);
+''');
+  }
+
+  test_const_invokeConstructor_named_imported() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C {
+  const C.named();
+}
+''');
+    checkLibrary(r'''
+import 'a.dart';
+const V = const C.named();
+''');
+  }
+
+  test_const_invokeConstructor_named_imported_withPrefix() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C {
+  const C.named();
+}
+''');
+    checkLibrary(r'''
+import 'a.dart' as p;
+const V = const p.C.named();
+''');
+  }
+
+  test_const_invokeConstructor_named_unresolved() {
+    checkLibrary(
+        r'''
+class C {}
+const V = const C.named();
+''',
+        allowErrors: true);
+  }
+
+  test_const_invokeConstructor_named_unresolved2() {
+    checkLibrary(
+        r'''
+const V = const C.named();
+''',
+        allowErrors: true);
+  }
+
+  test_const_invokeConstructor_named_unresolved3() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C {
+}
+''');
+    checkLibrary(
+        r'''
+import 'a.dart' as p;
+const V = const p.C.named();
+''',
+        allowErrors: true);
+  }
+
+  test_const_invokeConstructor_named_unresolved4() {
+    addLibrarySource('/a.dart', '');
+    checkLibrary(
+        r'''
+import 'a.dart' as p;
+const V = const p.C.named();
+''',
+        allowErrors: true);
+  }
+
+  test_const_invokeConstructor_named_unresolved5() {
+    checkLibrary(
+        r'''
+const V = const p.C.named();
+''',
+        allowErrors: true);
+  }
+
+  test_const_invokeConstructor_unnamed() {
+    checkLibrary(r'''
+class C {
+  const C();
+}
+const V = const C();
+''');
+  }
+
+  test_const_invokeConstructor_unnamed_imported() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C {
+  const C();
+}
+''');
+    checkLibrary(r'''
+import 'a.dart';
+const V = const C();
+''');
+  }
+
+  test_const_invokeConstructor_unnamed_imported_withPrefix() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C {
+  const C();
+}
+''');
+    checkLibrary(r'''
+import 'a.dart' as p;
+const V = const p.C();
+''');
+  }
+
+  test_const_invokeConstructor_unnamed_unresolved() {
+    checkLibrary(
+        r'''
+const V = const C();
+''',
+        allowErrors: true);
+  }
+
+  test_const_invokeConstructor_unnamed_unresolved2() {
+    addLibrarySource('/a.dart', '');
+    checkLibrary(
+        r'''
+import 'a.dart' as p;
+const V = const p.C();
+''',
+        allowErrors: true);
+  }
+
+  test_const_invokeConstructor_unnamed_unresolved3() {
+    checkLibrary(
+        r'''
+const V = const p.C();
+''',
+        allowErrors: true);
+  }
+
+  test_const_length_ofClassConstField() {
+    checkLibrary(r'''
+class C {
+  static const String F = '';
+}
+const int v = C.F.length;
+''');
+  }
+
+  test_const_length_ofClassConstField_imported() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C {
+  static const String F = '';
+}
+''');
+    checkLibrary(r'''
+import 'a.dart';
+const int v = C.F.length;
+''');
+  }
+
+  test_const_length_ofClassConstField_imported_withPrefix() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C {
+  static const String F = '';
+}
+''');
+    checkLibrary(r'''
+import 'a.dart' as p;
+const int v = p.C.F.length;
+''');
+  }
+
+  test_const_length_ofStringLiteral() {
+    checkLibrary(r'''
+const v = 'abc'.length;
+''');
+  }
+
+  test_const_length_ofTopLevelVariable() {
+    checkLibrary(r'''
+const String S = 'abc';
+const v = S.length;
+''');
+  }
+
+  test_const_length_ofTopLevelVariable_imported() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+const String S = 'abc';
+''');
+    checkLibrary(r'''
+import 'a.dart';
+const v = S.length;
+''');
+  }
+
+  test_const_length_ofTopLevelVariable_imported_withPrefix() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+const String S = 'abc';
+''');
+    checkLibrary(r'''
+import 'a.dart' as p;
+const v = p.S.length;
+''');
+  }
+
+  test_const_length_staticMethod() {
+    checkLibrary(r'''
+class C {
+  static int length() => 42;
+}
+const v = C.length;
+''');
+  }
+
+  test_const_parameterDefaultValue_initializingFormal_functionTyped() {
+    checkLibrary(r'''
+class C {
+  final x;
+  const C({this.x: foo});
+}
+int foo() => 42;
+''');
+  }
+
+  test_const_parameterDefaultValue_initializingFormal_named() {
+    checkLibrary(r'''
+class C {
+  final x;
+  const C({this.x: 1 + 2});
+}
+''');
+  }
+
+  test_const_parameterDefaultValue_initializingFormal_positional() {
+    checkLibrary(r'''
+class C {
+  final x;
+  const C([this.x = 1 + 2]);
+}
+''');
+  }
+
+  test_const_parameterDefaultValue_normal() {
+    checkLibrary(r'''
+class C {
+  const C.positional([p = 1 + 2]);
+  const C.named({p: 1 + 2});
+  void methodPositional([p = 1 + 2]) {}
+  void methodPositionalWithoutDefault([p]) {}
+  void methodNamed({p: 1 + 2}) {}
+  void methodNamedWithoutDefault({p}) {}
+}
+''');
+  }
+
+  test_const_reference_staticField() {
+    checkLibrary(r'''
+class C {
+  static const int F = 42;
+}
+const V = C.F;
+''');
+  }
+
+  test_const_reference_staticField_imported() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C {
+  static const int F = 42;
+}
+''');
+    checkLibrary(r'''
+import 'a.dart';
+const V = C.F;
+''');
+  }
+
+  test_const_reference_staticField_imported_withPrefix() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C {
+  static const int F = 42;
+}
+''');
+    checkLibrary(r'''
+import 'a.dart' as p;
+const V = p.C.F;
+''');
+  }
+
+  test_const_reference_staticMethod() {
+    checkLibrary(r'''
+class C {
+  static int m(int a, String b) => 42;
+}
+const V = C.m;
+''');
+  }
+
+  test_const_reference_staticMethod_imported() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C {
+  static int m(int a, String b) => 42;
+}
+''');
+    checkLibrary(r'''
+import 'a.dart';
+const V = C.m;
+''');
+  }
+
+  test_const_reference_staticMethod_imported_withPrefix() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C {
+  static int m(int a, String b) => 42;
+}
+''');
+    checkLibrary(r'''
+import 'a.dart' as p;
+const V = p.C.m;
+''');
+  }
+
+  test_const_reference_topLevelFunction() {
+    checkLibrary(r'''
+foo() {}
+const V = foo;
+''');
+  }
+
+  test_const_reference_topLevelFunction_imported() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+foo() {}
+''');
+    checkLibrary(r'''
+import 'a.dart';
+const V = foo;
+''');
+  }
+
+  test_const_reference_topLevelFunction_imported_withPrefix() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+foo() {}
+''');
+    checkLibrary(r'''
+import 'a.dart' as p;
+const V = p.foo;
+''');
+  }
+
+  test_const_reference_topLevelVariable() {
+    checkLibrary(r'''
+const A = 1;
+const B = A + 2;
+''');
+  }
+
+  test_const_reference_topLevelVariable_imported() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+const A = 1;
+''');
+    checkLibrary(r'''
+import 'a.dart';
+const B = A + 2;
+''');
+  }
+
+  test_const_reference_topLevelVariable_imported_withPrefix() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+const A = 1;
+''');
+    checkLibrary(r'''
+import 'a.dart' as p;
+const B = p.A + 2;
+''');
+  }
+
+  test_const_reference_type() {
+    checkLibrary(r'''
+class C {}
+class D<T> {}
+enum E {a, b, c}
+typedef F(int a, String b);
+const vDynamic = dynamic;
+const vNull = Null;
+const vObject = Object;
+const vClass = C;
+const vGenericClass = D;
+const vEnum = E;
+const vFunctionTypeAlias = F;
+''');
+  }
+
+  test_const_reference_type_functionType() {
+    checkLibrary(r'''
+typedef F();
+class C {
+  final f = <F>[];
+}
+''');
+  }
+
+  test_const_reference_type_imported() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C {}
+enum E {a, b, c}
+typedef F(int a, String b);
+''');
+    checkLibrary(r'''
+import 'a.dart';
+const vClass = C;
+const vEnum = E;
+const vFunctionTypeAlias = F;
+''');
+  }
+
+  test_const_reference_type_imported_withPrefix() {
+    addLibrarySource(
+        '/a.dart',
+        r'''
+class C {}
+enum E {a, b, c}
+typedef F(int a, String b);
+''');
+    checkLibrary(r'''
+import 'a.dart' as p;
+const vClass = p.C;
+const vEnum = p.E;
+const vFunctionTypeAlias = p.F;
+''');
+  }
+
+  test_const_reference_type_typeParameter() {
+    checkLibrary(r'''
+class C<T> {
+  final f = <T>[];
+}
+''');
+  }
+
+  test_const_reference_unresolved_prefix0() {
+    checkLibrary(
+        r'''
+const V = foo;
+''',
+        allowErrors: true);
+  }
+
+  test_const_reference_unresolved_prefix1() {
+    checkLibrary(
+        r'''
+class C {}
+const v = C.foo;
+''',
+        allowErrors: true);
+  }
+
+  test_const_reference_unresolved_prefix2() {
+    addLibrarySource(
+        '/foo.dart',
+        '''
+class C {}
+''');
+    checkLibrary(
+        r'''
+import 'foo.dart' as p;
+const v = p.C.foo;
+''',
+        allowErrors: true);
+  }
+
+  test_const_topLevel_binary() {
+    checkLibrary(r'''
+const vEqual = 1 == 2;
+const vAnd = true && false;
+const vOr = false || true;
+const vBitXor = 1 ^ 2;
+const vBitAnd = 1 & 2;
+const vBitOr = 1 | 2;
+const vBitShiftLeft = 1 << 2;
+const vBitShiftRight = 1 >> 2;
+const vAdd = 1 + 2;
+const vSubtract = 1 - 2;
+const vMiltiply = 1 * 2;
+const vDivide = 1 / 2;
+const vFloorDivide = 1 ~/ 2;
+const vModulo = 1 % 2;
+const vGreater = 1 > 2;
+const vGreaterEqual = 1 >= 2;
+const vLess = 1 < 2;
+const vLessEqual = 1 <= 2;
+''');
+  }
+
+  test_const_topLevel_conditional() {
+    checkLibrary(r'''
+const vConditional = (1 == 2) ? 11 : 22;
+''');
+  }
+
+  test_const_topLevel_identical() {
+    checkLibrary(r'''
+const vIdentical = (1 == 2) ? 11 : 22;
+''');
+  }
+
+  test_const_topLevel_literal() {
+    checkLibrary(r'''
+const vNull = null;
+const vBoolFalse = false;
+const vBoolTrue = true;
+const vInt = 1;
+const vIntLong = 0x9876543210987654321;
+const vDouble = 2.3;
+const vString = 'abc';
+const vStringConcat = 'aaa' 'bbb';
+const vStringInterpolation = 'aaa ${true} ${42} bbb';
+const vSymbol = #aaa.bbb.ccc;
+''');
+  }
+
+  test_const_topLevel_prefix() {
+    checkLibrary(r'''
+const vNotEqual = 1 != 2;
+const vNot = !true;
+const vNegate = -1;
+const vComplement = ~1;
+''');
+  }
+
+  test_const_topLevel_typedList() {
+    checkLibrary(r'''
+const vNull = const <Null>[];
+const vDynamic = const <dynamic>[1, 2, 3];
+const vInterfaceNoTypeParameters = const <int>[1, 2, 3];
+const vInterfaceNoTypeArguments = const <List>[];
+const vInterfaceWithTypeArguments = const <List<String>>[];
+const vInterfaceWithTypeArguments2 = const <Map<int, List<String>>>[];
+''');
+  }
+
+  test_const_topLevel_typedList_imported() {
+    addLibrarySource('/a.dart', 'class C {}');
+    checkLibrary(r'''
+import 'a.dart';
+const v = const <C>[];
+''');
+  }
+
+  test_const_topLevel_typedList_importedWithPrefix() {
+    addLibrarySource('/a.dart', 'class C {}');
+    checkLibrary(r'''
+import 'a.dart' as p;
+const v = const <p.C>[];
+''');
+  }
+
+  test_const_topLevel_typedMap() {
+    checkLibrary(r'''
+const vDynamic1 = const <dynamic, int>{};
+const vDynamic2 = const <int, dynamic>{};
+const vInterface = const <int, String>{};
+const vInterfaceWithTypeArguments = const <int, List<String>>{};
+''');
+  }
+
+  test_const_topLevel_untypedList() {
+    checkLibrary(r'''
+const v = const [1, 2, 3];
+''');
+  }
+
+  test_const_topLevel_untypedMap() {
+    checkLibrary(r'''
+const v = const {0: 'aaa', 1: 'bbb', 2: 'ccc'};
+''');
+  }
+
+  test_constExpr_pushReference_field_simpleIdentifier() {
+    checkLibrary('''
+class C {
+  static const a = b;
+  static const b = null;
+}
+''');
+  }
+
+  test_constExpr_pushReference_staticMethod_simpleIdentifier() {
+    checkLibrary('''
+class C {
+  static const a = m;
+  static m() {}
+}
+''');
+  }
+
+  test_constructor_documented() {
+    checkLibrary('''
+class C {
+  /**
+   * Docs
+   */
+  C();
+}''');
+  }
+
+  test_constructor_initializers_field() {
+    checkLibrary('''
+class C {
+  final x;
+  const C() : x = 42;
+}
+''');
+  }
+
+  test_constructor_initializers_field_notConst() {
+    variablesWithNotConstInitializers.add('x');
+    checkLibrary(
+        '''
+class C {
+  final x;
+  const A() : x = foo();
+}
+int foo() => 42;
+''',
+        allowErrors: true);
+  }
+
+  test_constructor_initializers_field_withParameter() {
+    checkLibrary('''
+class C {
+  final x;
+  const C(int p) : x = 1 + p;
+}
+''');
+  }
+
+  test_constructor_initializers_superInvocation_named() {
+    checkLibrary('''
+class A {
+  const A.aaa(int p);
+}
+class C extends A {
+  const C() : super.aaa(42);
+}
+''');
+  }
+
+  test_constructor_initializers_superInvocation_namedExpression() {
+    checkLibrary('''
+class A {
+  const A.aaa(a, {int b});
+}
+class C extends A {
+  const C() : super.aaa(1, b: 2);
+}
+''');
+  }
+
+  test_constructor_initializers_superInvocation_unnamed() {
+    checkLibrary('''
+class A {
+  const A(int p);
+}
+class C extends A {
+  const C.ccc() : super(42);
+}
+''');
+  }
+
+  test_constructor_initializers_thisInvocation_named() {
+    checkLibrary('''
+class C {
+  const C() : this.named(1, 'bbb');
+  const C.named(int a, String b);
+}
+''');
+  }
+
+  test_constructor_initializers_thisInvocation_namedExpression() {
+    checkLibrary('''
+class C {
+  const C() : this.named(1, b: 2);
+  const C.named(a, {int b});
+}
+''');
+  }
+
+  test_constructor_initializers_thisInvocation_unnamed() {
+    checkLibrary('''
+class C {
+  const C.named() : this(1, 'bbb');
+  const C(int a, String b);
+}
+''');
+  }
+
+  test_constructor_redirected_factory_named() {
+    checkLibrary('''
+class C {
+  factory C() = D.named;
+  C._();
+}
+class D extends C {
+  D.named() : super._();
+}
+''');
+  }
+
+  test_constructor_redirected_factory_named_generic() {
+    checkLibrary('''
+class C<T, U> {
+  factory C() = D<U, T>.named;
+  C._();
+}
+class D<T, U> extends C<U, T> {
+  D.named() : super._();
+}
+''');
+  }
+
+  test_constructor_redirected_factory_named_imported() {
+    addLibrarySource(
+        '/foo.dart',
+        '''
+import 'test.dart';
+class D extends C {
+  D.named() : super._();
+}
+''');
+    checkLibrary('''
+import 'foo.dart';
+class C {
+  factory C() = D.named;
+  C._();
+}
+''');
+  }
+
+  test_constructor_redirected_factory_named_imported_generic() {
+    addLibrarySource(
+        '/foo.dart',
+        '''
+import 'test.dart';
+class D<T, U> extends C<U, T> {
+  D.named() : super._();
+}
+''');
+    checkLibrary('''
+import 'foo.dart';
+class C<T, U> {
+  factory C() = D<U, T>.named;
+  C._();
+}
+''');
+  }
+
+  test_constructor_redirected_factory_named_prefixed() {
+    addLibrarySource(
+        '/foo.dart',
+        '''
+import 'test.dart';
+class D extends C {
+  D.named() : super._();
+}
+''');
+    checkLibrary('''
+import 'foo.dart' as foo;
+class C {
+  factory C() = foo.D.named;
+  C._();
+}
+''');
+  }
+
+  test_constructor_redirected_factory_named_prefixed_generic() {
+    addLibrarySource(
+        '/foo.dart',
+        '''
+import 'test.dart';
+class D<T, U> extends C<U, T> {
+  D.named() : super._();
+}
+''');
+    checkLibrary('''
+import 'foo.dart' as foo;
+class C<T, U> {
+  factory C() = foo.D<U, T>.named;
+  C._();
+}
+''');
+  }
+
+  test_constructor_redirected_factory_unnamed() {
+    checkLibrary('''
+class C {
+  factory C() = D;
+  C._();
+}
+class D extends C {
+  D() : super._();
+}
+''');
+  }
+
+  test_constructor_redirected_factory_unnamed_generic() {
+    checkLibrary('''
+class C<T, U> {
+  factory C() = D<U, T>;
+  C._();
+}
+class D<T, U> extends C<U, T> {
+  D() : super._();
+}
+''');
+  }
+
+  test_constructor_redirected_factory_unnamed_imported() {
+    addLibrarySource(
+        '/foo.dart',
+        '''
+import 'test.dart';
+class D extends C {
+  D() : super._();
+}
+''');
+    checkLibrary('''
+import 'foo.dart';
+class C {
+  factory C() = D;
+  C._();
+}
+''');
+  }
+
+  test_constructor_redirected_factory_unnamed_imported_generic() {
+    addLibrarySource(
+        '/foo.dart',
+        '''
+import 'test.dart';
+class D<T, U> extends C<U, T> {
+  D() : super._();
+}
+''');
+    checkLibrary('''
+import 'foo.dart';
+class C<T, U> {
+  factory C() = D<U, T>;
+  C._();
+}
+''');
+  }
+
+  test_constructor_redirected_factory_unnamed_prefixed() {
+    addLibrarySource(
+        '/foo.dart',
+        '''
+import 'test.dart';
+class D extends C {
+  D() : super._();
+}
+''');
+    checkLibrary('''
+import 'foo.dart' as foo;
+class C {
+  factory C() = foo.D;
+  C._();
+}
+''');
+  }
+
+  test_constructor_redirected_factory_unnamed_prefixed_generic() {
+    addLibrarySource(
+        '/foo.dart',
+        '''
+import 'test.dart';
+class D<T, U> extends C<U, T> {
+  D() : super._();
+}
+''');
+    checkLibrary('''
+import 'foo.dart' as foo;
+class C<T, U> {
+  factory C() = foo.D<U, T>;
+  C._();
+}
+''');
+  }
+
+  test_constructor_redirected_thisInvocation_named() {
+    checkLibrary('''
+class C {
+  C.named();
+  C() : this.named();
+}
+''');
+  }
+
+  test_constructor_redirected_thisInvocation_named_generic() {
+    checkLibrary('''
+class C<T> {
+  C.named();
+  C() : this.named();
+}
+''');
+  }
+
+  test_constructor_redirected_thisInvocation_unnamed() {
+    checkLibrary('''
+class C {
+  C();
+  C.named() : this();
+}
+''');
+  }
+
+  test_constructor_redirected_thisInvocation_unnamed_generic() {
+    checkLibrary('''
+class C<T> {
+  C();
+  C.named() : this();
+}
+''');
+  }
+
+  test_constructor_withCycles_const() {
+    checkLibrary('''
+class C {
+  final x;
+  const C() : x = const D();
+}
+class D {
+  final x;
+  const D() : x = const C();
+}
+''');
+  }
+
+  test_constructor_withCycles_nonConst() {
+    checkLibrary('''
+class C {
+  final x;
+  C() : x = new D();
+}
+class D {
+  final x;
+  D() : x = new C();
+}
+''');
+  }
+
+  void test_covariant_parameter() {
+    // Note: due to dartbug.com/27393, the keyword "checked" is identified by
+    // its presence in a library called "meta".  If that bug is fixed, this test
+    // my need to be changed.
+    checkLibrary(r'''
+library meta;
+const checked = null;
+class A<T> {
+  void f(@checked T t) {}
+}
+''');
+  }
+
+  void test_covariant_parameter_inherited() {
+    // Note: due to dartbug.com/27393, the keyword "checked" is identified by
+    // its presence in a library called "meta".  If that bug is fixed, this test
+    // my need to be changed.
+    checkLibrary(r'''
+library meta;
+const checked = null;
+class A<T> {
+  void f(@checked T t) {}
+}
+class B<T> extends A<T> {
+  void f(T t) {}
+}
+''');
+  }
+
+  test_defaultValue_refersToGenericClass_constructor() {
+    checkLibrary('''
+class B<T> {
+  const B();
+}
+class C<T> {
+  const C([B<T> b = const B()]);
+}
+''');
+  }
+
+  test_defaultValue_refersToGenericClass_constructor2() {
+    checkLibrary('''
+abstract class A<T> {}
+class B<T> implements A<T> {
+  const B();
+}
+class C<T> implements A<Iterable<T>> {
+  const C([A<T> a = const B()]);
+}
+''');
+  }
+
+  test_defaultValue_refersToGenericClass_functionG() {
+    checkLibrary('''
+class B<T> {
+  const B();
+}
+void foo<T>([B<T> b = const B()]) {}
+''');
+  }
+
+  test_defaultValue_refersToGenericClass_methodG() {
+    checkLibrary('''
+class B<T> {
+  const B();
+}
+class C {
+  void foo<T>([B<T> b = const B()]) {}
+}
+''');
+  }
+
+  test_defaultValue_refersToGenericClass_methodG_classG() {
+    checkLibrary('''
+class B<T1, T2> {
+  const B();
+}
+class C<E1> {
+  void foo<E2>([B<E1, E2> b = const B()]) {}
+}
+''');
+  }
+
+  test_defaultValue_refersToGenericClass_methodNG() {
+    checkLibrary('''
+class B<T> {
+  const B();
+}
+class C<T> {
+  void foo([B<T> b = const B()]) {}
+}
+''');
+  }
+
+  test_enum_documented() {
+    checkLibrary('''
+// Extra comment so doc comment offset != 0
+/**
+ * Docs
+ */
+enum E { v }''');
+  }
+
+  test_enum_value_documented() {
+    checkLibrary('''
+enum E {
+  /**
+   * Docs
+   */
+  v
+}''');
+  }
+
+  test_enum_values() {
+    checkLibrary('enum E { v1, v2 }');
+  }
+
+  test_enums() {
+    checkLibrary('enum E1 { v1 } enum E2 { v2 }');
+  }
+
+  test_executable_parameter_type_typedef() {
+    checkLibrary(r'''
+typedef F(int p);
+main(F f) {}
+''');
+  }
+
+  test_export_class() {
+    addLibrarySource('/a.dart', 'class C {}');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_export_class_type_alias() {
+    addLibrarySource(
+        '/a.dart', 'class C {} exends _D with _E; class _D {} class _E {}');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_export_configurations_useDefault() {
+    context.declaredVariables.define('dart.library.io', 'false');
+    addLibrarySource('/foo.dart', 'class A {}');
+    addLibrarySource('/foo_io.dart', 'class A {}');
+    addLibrarySource('/foo_html.dart', 'class A {}');
+    LibraryElementImpl library = checkLibrary(r'''
+export 'foo.dart'
+  if (dart.library.io) 'foo_io.dart'
+  if (dart.library.html) 'foo_html.dart';
+''');
+    expect(library.exports[0].uri, 'foo.dart');
+    expect(library.exports[0].exportedLibrary.source.shortName, 'foo.dart');
+  }
+
+  test_export_configurations_useFirst() {
+    context.declaredVariables.define('dart.library.io', 'true');
+    context.declaredVariables.define('dart.library.html', 'true');
+    addLibrarySource('/foo.dart', 'class A {}');
+    addLibrarySource('/foo_io.dart', 'class A {}');
+    addLibrarySource('/foo_html.dart', 'class A {}');
+    LibraryElementImpl library = checkLibrary(r'''
+export 'foo.dart'
+  if (dart.library.io) 'foo_io.dart'
+  if (dart.library.html) 'foo_html.dart';
+''');
+    expect(library.exports[0].uri, 'foo_io.dart');
+    expect(library.exports[0].exportedLibrary.source.shortName, 'foo_io.dart');
+  }
+
+  test_export_configurations_useSecond() {
+    context.declaredVariables.define('dart.library.io', 'false');
+    context.declaredVariables.define('dart.library.html', 'true');
+    addLibrarySource('/foo.dart', 'class A {}');
+    addLibrarySource('/foo_io.dart', 'class A {}');
+    addLibrarySource('/foo_html.dart', 'class A {}');
+    LibraryElementImpl library = checkLibrary(r'''
+export 'foo.dart'
+  if (dart.library.io) 'foo_io.dart'
+  if (dart.library.html) 'foo_html.dart';
+''');
+    ExportElement export = library.exports[0];
+    expect(export.uri, 'foo_html.dart');
+    expect(export.exportedLibrary.source.shortName, 'foo_html.dart');
+  }
+
+  test_export_function() {
+    addLibrarySource('/a.dart', 'f() {}');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_export_getter() {
+    addLibrarySource('/a.dart', 'get f() => null;');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_export_hide() {
+    addLibrary('dart:async');
+    checkLibrary('export "dart:async" hide Stream, Future;');
+  }
+
+  test_export_multiple_combinators() {
+    addLibrary('dart:async');
+    checkLibrary('export "dart:async" hide Stream show Future;');
+  }
+
+  test_export_setter() {
+    addLibrarySource('/a.dart', 'void set f(value) {}');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_export_show() {
+    addLibrary('dart:async');
+    checkLibrary('export "dart:async" show Future, Stream;');
+  }
+
+  test_export_typedef() {
+    addLibrarySource('/a.dart', 'typedef F();');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_export_variable() {
+    addLibrarySource('/a.dart', 'var x;');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_export_variable_const() {
+    addLibrarySource('/a.dart', 'const x = 0;');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_export_variable_final() {
+    addLibrarySource('/a.dart', 'final x = 0;');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_exportImport_configurations_useDefault() {
+    context.declaredVariables.define('dart.library.io', 'false');
+    addLibrarySource('/foo.dart', 'class A {}');
+    addLibrarySource('/foo_io.dart', 'class A {}');
+    addLibrarySource('/foo_html.dart', 'class A {}');
+    addLibrarySource(
+        '/bar.dart',
+        r'''
+export 'foo.dart'
+  if (dart.library.io) 'foo_io.dart'
+  if (dart.library.html) 'foo_html.dart';
+''');
+    LibraryElementImpl library = checkLibrary(r'''
+import 'bar.dart';
+class B extends A {}
+''');
+    var typeA = library.definingCompilationUnit.getType('B').supertype;
+    expect(typeA.element.source.shortName, 'foo.dart');
+  }
+
+  test_exportImport_configurations_useFirst() {
+    context.declaredVariables.define('dart.library.io', 'true');
+    context.declaredVariables.define('dart.library.html', 'true');
+    addLibrarySource('/foo.dart', 'class A {}');
+    addLibrarySource('/foo_io.dart', 'class A {}');
+    addLibrarySource('/foo_html.dart', 'class A {}');
+    addLibrarySource(
+        '/bar.dart',
+        r'''
+export 'foo.dart'
+  if (dart.library.io) 'foo_io.dart'
+  if (dart.library.html) 'foo_html.dart';
+''');
+    var library = checkLibrary(r'''
+import 'bar.dart';
+class B extends A {}
+''');
+    var typeA = library.definingCompilationUnit.getType('B').supertype;
+    expect(typeA.element.source.shortName, 'foo_io.dart');
+  }
+
+  test_exports() {
+    addLibrarySource('/a.dart', 'library a;');
+    addLibrarySource('/b.dart', 'library b;');
+    checkLibrary('export "a.dart"; export "b.dart";');
+  }
+
+  test_field_documented() {
+    checkLibrary('''
+class C {
+  /**
+   * Docs
+   */
+  var x;
+}''');
+  }
+
+  test_field_formal_param_inferred_type_implicit() {
+    checkLibrary('class C extends D { var v; C(this.v); }'
+        ' abstract class D { int get v; }');
+  }
+
+  test_field_inferred_type_nonStatic_explicit_initialized() {
+    checkLibrary('class C { num v = 0; }');
+  }
+
+  test_field_inferred_type_nonStatic_implicit_initialized() {
+    checkLibrary('class C { var v = 0; }');
+  }
+
+  test_field_inferred_type_nonStatic_implicit_uninitialized() {
+    checkLibrary(
+        'class C extends D { var v; } abstract class D { int get v; }');
+  }
+
+  test_field_inferred_type_static_implicit_initialized() {
+    checkLibrary('class C { static var v = 0; }');
+  }
+
+  test_field_propagatedType_const_noDep() {
+    checkLibrary('''
+class C {
+  static const x = 0;
+}''');
+  }
+
+  test_field_propagatedType_final_dep_inLib() {
+    addLibrarySource('/a.dart', 'final a = 1;');
+    checkLibrary('''
+import "a.dart";
+class C {
+  final b = a / 2;
+}''');
+  }
+
+  test_field_propagatedType_final_dep_inPart() {
+    addSource('/a.dart', 'part of lib; final a = 1;');
+    checkLibrary('''
+library lib;
+part "a.dart";
+class C {
+  final b = a / 2;
+}''');
+  }
+
+  test_field_propagatedType_final_noDep_instance() {
+    checkLibrary('''
+class C {
+  final x = 0;
+}''');
+  }
+
+  test_field_propagatedType_final_noDep_static() {
+    checkLibrary('''
+class C {
+  static final x = 0;
+}''');
+  }
+
+  test_field_static_final_untyped() {
+    checkLibrary('class C { static final x = 0; }');
+  }
+
+  test_field_untyped() {
+    checkLibrary('class C { var x = 0; }');
+  }
+
+  test_function_async() {
+    checkLibrary(r'''
+import 'dart:async';
+Future f() async {}
+''');
+  }
+
+  test_function_asyncStar() {
+    checkLibrary(r'''
+import 'dart:async';
+Stream f() async* {}
+''');
+  }
+
+  test_function_documented() {
+    checkLibrary('''
+// Extra comment so doc comment offset != 0
+/**
+ * Docs
+ */
+f() {}''');
+  }
+
+  test_function_entry_point() {
+    checkLibrary('main() {}');
+  }
+
+  test_function_entry_point_in_export() {
+    addLibrarySource('/a.dart', 'library a; main() {}');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_function_entry_point_in_export_hidden() {
+    addLibrarySource('/a.dart', 'library a; main() {}');
+    checkLibrary('export "a.dart" hide main;');
+  }
+
+  test_function_entry_point_in_part() {
+    addSource('/a.dart', 'part of my.lib; main() {}');
+    checkLibrary('library my.lib; part "a.dart";');
+  }
+
+  test_function_external() {
+    checkLibrary('external f();');
+  }
+
+  test_function_parameter_kind_named() {
+    checkLibrary('f({x}) {}');
+  }
+
+  test_function_parameter_kind_positional() {
+    checkLibrary('f([x]) {}');
+  }
+
+  test_function_parameter_kind_required() {
+    checkLibrary('f(x) {}');
+  }
+
+  test_function_parameter_parameters() {
+    checkLibrary('f(g(x, y)) {}');
+  }
+
+  test_function_parameter_return_type() {
+    checkLibrary('f(int g()) {}');
+  }
+
+  test_function_parameter_return_type_void() {
+    checkLibrary('f(void g()) {}');
+  }
+
+  test_function_parameter_type() {
+    checkLibrary('f(int i) {}');
+  }
+
+  test_function_parameters() {
+    checkLibrary('f(x, y) {}');
+  }
+
+  test_function_return_type() {
+    checkLibrary('int f() => null;');
+  }
+
+  test_function_return_type_implicit() {
+    checkLibrary('f() => null;');
+  }
+
+  test_function_return_type_void() {
+    checkLibrary('void f() {}');
+  }
+
+  test_function_type_parameter() {
+    prepareAnalysisContext(createOptions()..enableGenericMethods = true);
+    checkLibrary('T f<T, U>(U u) => null;');
+  }
+
+  test_function_type_parameter_with_function_typed_parameter() {
+    prepareAnalysisContext(createOptions()..enableGenericMethods = true);
+    checkLibrary('void f<T, U>(T x(U u)) {}');
+  }
+
+  test_functions() {
+    checkLibrary('f() {} g() {}');
+  }
+
+  test_generic_gClass_gMethodStatic() {
+    prepareAnalysisContext(createOptions()..enableGenericMethods = true);
+    checkLibrary('''
+class C<T, U> {
+  static void m<V, W>(V v, W w) {
+    void f<X, Y>(V v, W w, X x, Y y) {
+    }
+  }
+}
+''');
+  }
+
+  test_getElement_constructor_named() {
+    String text = 'class C { C.named(); }';
+    Source source = addLibrarySource('/test.dart', text);
+    ConstructorElement original = context
+        .computeLibraryElement(source)
+        .getType('C')
+        .getNamedConstructor('named');
+    expect(original, isNotNull);
+    ConstructorElement resynthesized = validateGetElement(text, original);
+    compareConstructorElements(resynthesized, original, 'C.constructor named');
+  }
+
+  test_getElement_constructor_unnamed() {
+    String text = 'class C { C(); }';
+    Source source = addLibrarySource('/test.dart', text);
+    ConstructorElement original =
+        context.computeLibraryElement(source).getType('C').unnamedConstructor;
+    expect(original, isNotNull);
+    ConstructorElement resynthesized = validateGetElement(text, original);
+    compareConstructorElements(resynthesized, original, 'C.constructor');
+  }
+
+  test_getElement_field() {
+    String text = 'class C { var f; }';
+    Source source = addLibrarySource('/test.dart', text);
+    FieldElement original =
+        context.computeLibraryElement(source).getType('C').getField('f');
+    expect(original, isNotNull);
+    FieldElement resynthesized = validateGetElement(text, original);
+    compareFieldElements(resynthesized, original, 'C.field f');
+  }
+
+  test_getElement_getter() {
+    String text = 'class C { get f => null; }';
+    Source source = addLibrarySource('/test.dart', text);
+    PropertyAccessorElement original =
+        context.computeLibraryElement(source).getType('C').getGetter('f');
+    expect(original, isNotNull);
+    PropertyAccessorElement resynthesized = validateGetElement(text, original);
+    comparePropertyAccessorElements(resynthesized, original, 'C.getter f');
+  }
+
+  test_getElement_method() {
+    String text = 'class C { f() {} }';
+    Source source = addLibrarySource('/test.dart', text);
+    MethodElement original =
+        context.computeLibraryElement(source).getType('C').getMethod('f');
+    expect(original, isNotNull);
+    MethodElement resynthesized = validateGetElement(text, original);
+    compareMethodElements(resynthesized, original, 'C.method f');
+  }
+
+  test_getElement_operator() {
+    String text = 'class C { operator+(x) => null; }';
+    Source source = addLibrarySource('/test.dart', text);
+    MethodElement original =
+        context.computeLibraryElement(source).getType('C').getMethod('+');
+    expect(original, isNotNull);
+    MethodElement resynthesized = validateGetElement(text, original);
+    compareMethodElements(resynthesized, original, 'C.operator+');
+  }
+
+  test_getElement_setter() {
+    String text = 'class C { void set f(value) {} }';
+    Source source = addLibrarySource('/test.dart', text);
+    PropertyAccessorElement original =
+        context.computeLibraryElement(source).getType('C').getSetter('f');
+    expect(original, isNotNull);
+    PropertyAccessorElement resynthesized = validateGetElement(text, original);
+    comparePropertyAccessorElements(resynthesized, original, 'C.setter f');
+  }
+
+  test_getElement_unit() {
+    String text = 'class C { f() {} }';
+    Source source = addLibrarySource('/test.dart', text);
+    CompilationUnitElement original =
+        context.computeLibraryElement(source).definingCompilationUnit;
+    expect(original, isNotNull);
+    CompilationUnitElement resynthesized = validateGetElement(text, original);
+    compareCompilationUnitElements(resynthesized, original);
+  }
+
+  test_getter_documented() {
+    checkLibrary('''
+// Extra comment so doc comment offset != 0
+/**
+ * Docs
+ */
+get x => null;''');
+  }
+
+  test_getter_external() {
+    checkLibrary('external int get x;');
+  }
+
+  test_getter_inferred_type_nonStatic_implicit_return() {
+    checkLibrary(
+        'class C extends D { get f => null; } abstract class D { int get f; }');
+  }
+
+  test_getters() {
+    checkLibrary('int get x => null; get y => null;');
+  }
+
+  test_implicitTopLevelVariable_getterFirst() {
+    checkLibrary('int get x => 0; void set x(int value) {}');
+  }
+
+  test_implicitTopLevelVariable_setterFirst() {
+    checkLibrary('void set x(int value) {} int get x => 0;');
+  }
+
+  test_import_configurations_useDefault() {
+    context.declaredVariables.define('dart.library.io', 'false');
+    addLibrarySource('/foo.dart', 'class A {}');
+    addLibrarySource('/foo_io.dart', 'class A {}');
+    addLibrarySource('/foo_html.dart', 'class A {}');
+    var library = checkLibrary(r'''
+import 'foo.dart'
+  if (dart.library.io) 'foo_io.dart'
+  if (dart.library.html) 'foo_html.dart';
+
+class B extends A {}
+''');
+    var typeA = library.definingCompilationUnit.getType('B').supertype;
+    expect(typeA.element.source.shortName, 'foo.dart');
+  }
+
+  test_import_configurations_useFirst() {
+    context.declaredVariables.define('dart.library.io', 'true');
+    context.declaredVariables.define('dart.library.html', 'true');
+    addLibrarySource('/foo.dart', 'class A {}');
+    addLibrarySource('/foo_io.dart', 'class A {}');
+    addLibrarySource('/foo_html.dart', 'class A {}');
+    var library = checkLibrary(r'''
+import 'foo.dart'
+  if (dart.library.io) 'foo_io.dart'
+  if (dart.library.html) 'foo_html.dart';
+
+class B extends A {}
+''');
+    var typeA = library.definingCompilationUnit.getType('B').supertype;
+    expect(typeA.element.source.shortName, 'foo_io.dart');
+  }
+
+  test_import_deferred() {
+    addLibrarySource('/a.dart', 'f() {}');
+    checkLibrary('import "a.dart" deferred as p; main() { p.f(); }');
+  }
+
+  test_import_hide() {
+    addLibrary('dart:async');
+    checkLibrary('import "dart:async" hide Stream, Completer; Future f;');
+  }
+
+  test_import_multiple_combinators() {
+    addLibrary('dart:async');
+    checkLibrary('import "dart:async" hide Stream show Future; Future f;');
+  }
+
+  test_import_prefixed() {
+    addLibrarySource('/a.dart', 'library a; class C {}');
+    checkLibrary('import "a.dart" as a; a.C c;');
+  }
+
+  test_import_self() {
+    LibraryElementImpl resynthesized = checkLibrary('''
+import 'test.dart' as p;
+class C {}
+class D extends p.C {} // Prevent "unused import" warning
+''');
+    expect(resynthesized.imports, hasLength(2));
+    expect(resynthesized.imports[0].importedLibrary.location,
+        resynthesized.location);
+    expect(resynthesized.imports[1].importedLibrary.isDartCore, true);
+  }
+
+  test_import_show() {
+    addLibrary('dart:async');
+    checkLibrary('''
+import "dart:async" show Future, Stream;
+Future f;
+Stream s;
+''');
+  }
+
+  test_imports() {
+    addLibrarySource('/a.dart', 'library a; class C {}');
+    addLibrarySource('/b.dart', 'library b; class D {}');
+    checkLibrary('import "a.dart"; import "b.dart"; C c; D d;');
+  }
+
+  test_inferred_function_type_for_variable_in_generic_function() {
+    // In the code below, `x` has an inferred type of `() => int`, with 2
+    // (unused) type parameters from the enclosing top level function.
+    checkLibrary('''
+f<U, V>() {
+  var x = () => 0;
+}
+''');
+  }
+
+  test_inferred_function_type_in_generic_class_constructor() {
+    // In the code below, `() => () => 0` has an inferred return type of
+    // `() => int`, with 2 (unused) type parameters from the enclosing class.
+    checkLibrary('''
+class C<U, V> {
+  final x;
+  C() : x = (() => () => 0);
+}
+''');
+  }
+
+  test_inferred_function_type_in_generic_class_getter() {
+    // In the code below, `() => () => 0` has an inferred return type of
+    // `() => int`, with 2 (unused) type parameters from the enclosing class.
+    checkLibrary('''
+class C<U, V> {
+  get x => () => () => 0;
+}
+''');
+  }
+
+  test_inferred_function_type_in_generic_class_in_generic_method() {
+    // In the code below, `() => () => 0` has an inferred return type of
+    // `() => int`, with 3 (unused) type parameters from the enclosing class
+    // and method.
+    checkLibrary('''
+class C<T> {
+  f<U, V>() {
+    print(() => () => 0);
+  }
+}
+''');
+  }
+
+  test_inferred_function_type_in_generic_class_setter() {
+    // In the code below, `() => () => 0` has an inferred return type of
+    // `() => int`, with 2 (unused) type parameters from the enclosing class.
+    checkLibrary('''
+class C<U, V> {
+  void set x(value) {
+    print(() => () => 0);
+  }
+}
+''');
+  }
+
+  test_inferred_function_type_in_generic_closure() {
+    if (!createOptions().strongMode) {
+      // The test below uses generic comment syntax because proper generic
+      // method syntax doesn't support generic closures.  So it can only run in
+      // strong mode.
+      // TODO(paulberry): once proper generic method syntax supports generic
+      // closures, rewrite the test below without using generic comment syntax,
+      // and remove this hack.  See dartbug.com/25819
+      return;
+    }
+    // In the code below, `<U, V>() => () => 0` has an inferred return type of
+    // `() => int`, with 3 (unused) type parameters.
+    checkLibrary('''
+f<T>() {
+  print(/*<U, V>*/() => () => 0);
+}
+''');
+  }
+
+  test_inferred_generic_function_type_in_generic_closure() {
+    if (!createOptions().strongMode) {
+      // The test below uses generic comment syntax because proper generic
+      // method syntax doesn't support generic closures.  So it can only run in
+      // strong mode.
+      // TODO(paulberry): once proper generic method syntax supports generic
+      // closures, rewrite the test below without using generic comment syntax,
+      // and remove this hack.  See dartbug.com/25819
+      return;
+    }
+    // In the code below, `<U, V>() => <W, X, Y, Z>() => 0` has an inferred
+    // return type of `() => int`, with 7 (unused) type parameters.
+    checkLibrary('''
+f<T>() {
+  print(/*<U, V>*/() => /*<W, X, Y, Z>*/() => 0);
+}
+''');
+  }
+
+  test_inferred_type_is_typedef() {
+    checkLibrary('typedef int F(String s);'
+        ' class C extends D { var v; }'
+        ' abstract class D { F get v; }');
+  }
+
+  test_inferred_type_refers_to_bound_type_param() {
+    checkLibrary('class C<T> extends D<int, T> { var v; }'
+        ' abstract class D<U, V> { Map<V, U> get v; }');
+  }
+
+  void test_inferred_type_refers_to_function_typed_param_of_typedef() {
+    checkLibrary('''
+typedef void F(int g(String s));
+h(F f) => null;
+var v = h(/*info:INFERRED_TYPE_CLOSURE*/(y) {});
+''');
+  }
+
+  test_inferred_type_refers_to_function_typed_parameter_type_generic_class() {
+    checkLibrary('class C<T, U> extends D<U, int> { void f(int x, g) {} }'
+        ' abstract class D<V, W> { void f(int x, W g(V s)); }');
+  }
+
+  test_inferred_type_refers_to_function_typed_parameter_type_other_lib() {
+    addLibrarySource(
+        '/a.dart', 'import "b.dart"; abstract class D extends E {}');
+    addLibrarySource(
+        '/b.dart', 'abstract class E { void f(int x, int g(String s)); }');
+    checkLibrary('import "a.dart"; class C extends D { void f(int x, g) {} }');
+  }
+
+  test_inferred_type_refers_to_method_function_typed_parameter_type() {
+    checkLibrary('class C extends D { void f(int x, g) {} }'
+        ' abstract class D { void f(int x, int g(String s)); }');
+  }
+
+  test_inferred_type_refers_to_nested_function_typed_param() {
+    checkLibrary('''
+f(void g(int x, void h())) => null;
+var v = f((x, y) {});
+''');
+  }
+
+  test_inferred_type_refers_to_nested_function_typed_param_named() {
+    checkLibrary('''
+f({void g(int x, void h())}) => null;
+var v = f(g: (x, y) {});
+''');
+  }
+
+  test_inferred_type_refers_to_setter_function_typed_parameter_type() {
+    checkLibrary('class C extends D { void set f(g) {} }'
+        ' abstract class D { void set f(int g(String s)); }');
+  }
+
+  void test_inferredType_usesSyntheticFunctionType_functionTypedParam() {
+    checkLibrary('''
+int f(int x(String y)) => null;
+String g(int x(String y)) => null;
+var v = [f, g];
+''');
+  }
+
+  test_initializer_executable_with_return_type_from_closure() {
+    checkLibrary('var v = () => 0;');
+  }
+
+  test_initializer_executable_with_return_type_from_closure_field() {
+    checkLibrary('''
+class C {
+  var v = () => 0;
+}
+''');
+  }
+
+  test_initializer_executable_with_return_type_from_closure_local() {
+    checkLibrary('''
+void f() {
+  int u = 0;
+  var v = () => 0;
+}
+''');
+  }
+
+  test_instantiateToBounds_boundRefersToEarlierTypeArgument() {
+    checkLibrary('''
+class C<S extends num, T extends C<S, T>> {}
+C c;
+''');
+  }
+
+  test_instantiateToBounds_boundRefersToItself() {
+    checkLibrary('''
+class C<T extends C<T>> {}
+C c;
+var c2 = new C();
+class B {
+  var c3 = new C();
+}
+''');
+  }
+
+  test_instantiateToBounds_boundRefersToLaterTypeArgument() {
+    checkLibrary('''
+class C<T extends C<T, U>, U extends num> {}
+C c;
+''');
+  }
+
+  test_instantiateToBounds_simple() {
+    checkLibrary('''
+class C<T extends num> {}
+C c;
+''');
+  }
+
+  test_library() {
+    checkLibrary('');
+  }
+
+  test_library_documented() {
+    checkLibrary('''
+// Extra comment so doc comment offset != 0
+/**
+ * Docs
+ */
+library foo;''');
+  }
+
+  test_library_name_with_spaces() {
+    checkLibrary('library foo . bar ;');
+  }
+
+  test_library_named() {
+    checkLibrary('library foo.bar;');
+  }
+
+  test_localFunctions() {
+    checkLibrary(r'''
+f() {
+  f1() {}
+  {
+    f2() {}
+  }
+}
+''');
+  }
+
+  test_localFunctions_inConstructor() {
+    checkLibrary(r'''
+class C {
+  C() {
+    f() {}
+  }
+}
+''');
+  }
+
+  test_localFunctions_inMethod() {
+    checkLibrary(r'''
+class C {
+  m() {
+    f() {}
+  }
+}
+''');
+  }
+
+  test_localFunctions_inTopLevelGetter() {
+    checkLibrary(r'''
+get g {
+  f() {}
+}
+''');
+  }
+
+  test_localLabels_inConstructor() {
+    checkLibrary(
+        r'''
+class C {
+  C() {
+    aaa: while (true) {}
+    bbb: switch (42) {
+      ccc: case 0:
+        break;
+    }
+  }
+}
+''',
+        allowErrors: true);
+  }
+
+  test_localLabels_inMethod() {
+    checkLibrary(
+        r'''
+class C {
+  m() {
+    aaa: while (true) {}
+    bbb: switch (42) {
+      ccc: case 0:
+        break;
+    }
+  }
+}
+''',
+        allowErrors: true);
+  }
+
+  test_localLabels_inTopLevelFunction() {
+    checkLibrary(
+        r'''
+main() {
+  aaa: while (true) {}
+  bbb: switch (42) {
+    ccc: case 0:
+      break;
+  }
+}
+''',
+        allowErrors: true);
+  }
+
+  test_localVariables_inConstructor() {
+    checkLibrary(r'''
+class C {
+  C() {
+    int v;
+    f() {}
+  }
+}
+''');
+  }
+
+  test_localVariables_inLocalFunction() {
+    checkLibrary(r'''
+f() {
+  f1() {
+    int v1 = 1;
+  } // 2
+  f2() {
+    int v1 = 1;
+    f3() {
+      int v2 = 1;
+    }
+  }
+}
+''');
+  }
+
+  test_localVariables_inMethod() {
+    checkLibrary(r'''
+class C {
+  m() {
+    int v;
+  }
+}
+''');
+  }
+
+  test_localVariables_inTopLevelFunction() {
+    checkLibrary(r'''
+main() {
+  int v1 = 1;
+  {
+    const String v2 = 'bbb';
+  }
+  Map<int, List<double>> v3;
+}
+''');
+  }
+
+  test_localVariables_inTopLevelGetter() {
+    checkLibrary(r'''
+get g {
+  int v;
+}
+''');
+  }
+
+  test_main_class() {
+    checkLibrary('class main {}');
+  }
+
+  test_main_class_alias() {
+    checkLibrary('class main = C with D; class C {} class D {}');
+  }
+
+  test_main_class_alias_via_export() {
+    addLibrarySource('/a.dart', 'class main = C with D; class C {} class D {}');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_main_class_via_export() {
+    addLibrarySource('/a.dart', 'class main {}');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_main_getter() {
+    checkLibrary('get main => null;');
+  }
+
+  test_main_getter_via_export() {
+    addLibrarySource('/a.dart', 'get main => null;');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_main_typedef() {
+    checkLibrary('typedef main();');
+  }
+
+  test_main_typedef_via_export() {
+    addLibrarySource('/a.dart', 'typedef main();');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_main_variable() {
+    checkLibrary('var main;');
+  }
+
+  test_main_variable_via_export() {
+    addLibrarySource('/a.dart', 'var main;');
+    checkLibrary('export "a.dart";');
+  }
+
+  test_member_function_async() {
+    checkLibrary(r'''
+import 'dart:async';
+class C {
+  Future f() async {}
+}
+''');
+  }
+
+  test_member_function_asyncStar() {
+    checkLibrary(r'''
+import 'dart:async';
+class C {
+  Stream f() async* {}
+}
+''');
+  }
+
+  test_metadata_classDeclaration() {
+    checkLibrary('const a = null; @a class C {}');
+  }
+
+  test_metadata_classTypeAlias() {
+    checkLibrary(
+        'const a = null; @a class C = D with E; class D {} class E {}');
+  }
+
+  test_metadata_constructor_call_named() {
+    checkLibrary('class A { const A.named(); } @A.named() class C {}');
+  }
+
+  test_metadata_constructor_call_named_prefixed() {
+    addLibrarySource('/foo.dart', 'class A { const A.named(); }');
+    checkLibrary('import "foo.dart" as foo; @foo.A.named() class C {}');
+  }
+
+  test_metadata_constructor_call_unnamed() {
+    checkLibrary('class A { const A(); } @A() class C {}');
+  }
+
+  test_metadata_constructor_call_unnamed_prefixed() {
+    addLibrarySource('/foo.dart', 'class A { const A(); }');
+    checkLibrary('import "foo.dart" as foo; @foo.A() class C {}');
+  }
+
+  test_metadata_constructor_call_with_args() {
+    checkLibrary('class A { const A(x); } @A(null) class C {}');
+  }
+
+  test_metadata_constructorDeclaration_named() {
+    checkLibrary('const a = null; class C { @a C.named(); }');
+  }
+
+  test_metadata_constructorDeclaration_unnamed() {
+    checkLibrary('const a = null; class C { @a C(); }');
+  }
+
+  test_metadata_enumDeclaration() {
+    checkLibrary('const a = null; @a enum E { v }');
+  }
+
+  test_metadata_exportDirective() {
+    addLibrarySource('/foo.dart', '');
+    checkLibrary('@a export "foo.dart"; const a = null;');
+  }
+
+  test_metadata_fieldDeclaration() {
+    checkLibrary('const a = null; class C { @a int x; }');
+  }
+
+  test_metadata_fieldFormalParameter() {
+    checkLibrary('const a = null; class C { var x; C(@a this.x); }');
+  }
+
+  test_metadata_fieldFormalParameter_withDefault() {
+    checkLibrary('const a = null; class C { var x; C([@a this.x = null]); }');
+  }
+
+  test_metadata_functionDeclaration_function() {
+    checkLibrary('const a = null; @a f() {}');
+  }
+
+  test_metadata_functionDeclaration_getter() {
+    checkLibrary('const a = null; @a get f => null;');
+  }
+
+  test_metadata_functionDeclaration_setter() {
+    checkLibrary('const a = null; @a set f(value) {}');
+  }
+
+  test_metadata_functionTypeAlias() {
+    checkLibrary('const a = null; @a typedef F();');
+  }
+
+  test_metadata_functionTypedFormalParameter() {
+    checkLibrary('const a = null; f(@a g()) {}');
+  }
+
+  test_metadata_functionTypedFormalParameter_withDefault() {
+    checkLibrary('const a = null; f([@a g() = null]) {}');
+  }
+
+  test_metadata_importDirective() {
+    addLibrarySource('/foo.dart', 'const b = null;');
+    checkLibrary('@a import "foo.dart"; const a = b;');
+  }
+
+  test_metadata_libraryDirective() {
+    checkLibrary('@a library L; const a = null;');
+  }
+
+  test_metadata_methodDeclaration_getter() {
+    checkLibrary('const a = null; class C { @a get m => null; }');
+  }
+
+  test_metadata_methodDeclaration_method() {
+    checkLibrary('const a = null; class C { @a m() {} }');
+  }
+
+  test_metadata_methodDeclaration_setter() {
+    checkLibrary('const a = null; class C { @a set m(value) {} }');
+  }
+
+  test_metadata_partDirective() {
+    addSource('/foo.dart', 'part of L;');
+    checkLibrary('library L; @a part "foo.dart"; const a = null;');
+  }
+
+  test_metadata_prefixed_variable() {
+    addLibrarySource('/a.dart', 'const b = null;');
+    checkLibrary('import "a.dart" as a; @a.b class C {}');
+  }
+
+  test_metadata_simpleFormalParameter() {
+    checkLibrary('const a = null; f(@a x) {}');
+  }
+
+  test_metadata_simpleFormalParameter_withDefault() {
+    checkLibrary('const a = null; f([@a x = null]) {}');
+  }
+
+  test_metadata_topLevelVariableDeclaration() {
+    checkLibrary('const a = null; @a int v;');
+  }
+
+  test_metadata_typeParameter_ofClass() {
+    checkLibrary('const a = null; class C<@a T> {}');
+  }
+
+  test_metadata_typeParameter_ofClassTypeAlias() {
+    checkLibrary(
+        'const a = null; class C<@a T> = D with E; class D {} class E {}');
+  }
+
+  test_metadata_typeParameter_ofFunction() {
+    checkLibrary('const a = null; f<@a T>() {}');
+  }
+
+  test_metadata_typeParameter_ofTypedef() {
+    checkLibrary('const a = null; typedef F<@a T>();');
+  }
+
+  test_method_documented() {
+    checkLibrary('''
+class C {
+  /**
+   * Docs
+   */
+  f() {}
+}''');
+  }
+
+  test_method_inferred_type_nonStatic_implicit_param() {
+    checkLibrary('class C extends D { void f(value) {} }'
+        ' abstract class D { void f(int value); }');
+  }
+
+  test_method_inferred_type_nonStatic_implicit_return() {
+    checkLibrary(
+        'class C extends D { f() => null; } abstract class D { int f(); }');
+  }
+
+  test_method_parameter_parameters() {
+    checkLibrary('class C { f(g(x, y)) {} }');
+  }
+
+  test_method_parameter_parameters_in_generic_class() {
+    checkLibrary('class C<A, B> { f(A g(B x)) {} }');
+  }
+
+  test_method_parameter_return_type() {
+    checkLibrary('class C { f(int g()) {} }');
+  }
+
+  test_method_parameter_return_type_void() {
+    checkLibrary('class C { f(void g()) {} }');
+  }
+
+  test_method_type_parameter() {
+    prepareAnalysisContext(createOptions()..enableGenericMethods = true);
+    checkLibrary('class C { T f<T, U>(U u) => null; }');
+  }
+
+  test_method_type_parameter_in_generic_class() {
+    prepareAnalysisContext(createOptions()..enableGenericMethods = true);
+    checkLibrary('class C<T, U> { V f<V, W>(T t, U u, W w) => null; }');
+  }
+
+  test_method_type_parameter_with_function_typed_parameter() {
+    prepareAnalysisContext(createOptions()..enableGenericMethods = true);
+    checkLibrary('class C { void f<T, U>(T x(U u)) {} }');
+  }
+
+  test_nested_generic_functions_in_generic_class_with_function_typed_params() {
+    checkLibrary('''
+class C<T, U> {
+  void g<V, W>() {
+    void h<X, Y>(void p(T t, U u, V v, W w, X x, Y y)) {
+    }
+  }
+}
+''');
+  }
+
+  test_nested_generic_functions_in_generic_class_with_local_variables() {
+    checkLibrary('''
+class C<T, U> {
+  void g<V, W>() {
+    void h<X, Y>() {
+      T t;
+      U u;
+      V v;
+      W w;
+      X x;
+      Y y;
+    }
+  }
+}
+''');
+  }
+
+  test_nested_generic_functions_with_function_typed_param() {
+    checkLibrary('''
+void f<T, U>() {
+  void g<V, W>() {
+    void h<X, Y>(void p(T t, U u, V v, W w, X x, Y y)) {
+    }
+  }
+}
+''');
+  }
+
+  test_nested_generic_functions_with_local_variables() {
+    checkLibrary('''
+void f<T, U>() {
+  void g<V, W>() {
+    void h<X, Y>() {
+      T t;
+      U u;
+      V v;
+      W w;
+      X x;
+      Y y;
+    }
+  }
+}
+''');
+  }
+
+  test_operator() {
+    checkLibrary('class C { C operator+(C other) => null; }');
+  }
+
+  test_operator_equal() {
+    checkLibrary('class C { bool operator==(Object other) => false; }');
+  }
+
+  test_operator_external() {
+    checkLibrary('class C { external C operator+(C other); }');
+  }
+
+  test_operator_greater_equal() {
+    checkLibrary('class C { bool operator>=(C other) => false; }');
+  }
+
+  test_operator_index() {
+    checkLibrary('class C { bool operator[](int i) => null; }');
+  }
+
+  test_operator_index_set() {
+    checkLibrary('class C { void operator[]=(int i, bool v) {} }');
+  }
+
+  test_operator_less_equal() {
+    checkLibrary('class C { bool operator<=(C other) => false; }');
+  }
+
+  test_parameterTypeNotInferred_constructor() {
+    // Strong mode doesn't do type inference on constructor parameters, so it's
+    // ok that we don't store inferred type info for them in summaries.
+    checkLibrary('''
+class C {
+  C.positional([x = 1]);
+  C.named({x: 1});
+}
+''');
+  }
+
+  test_parameterTypeNotInferred_initializingFormal() {
+    // Strong mode doesn't do type inference on initializing formals, so it's
+    // ok that we don't store inferred type info for them in summaries.
+    checkLibrary('''
+class C {
+  var x;
+  C.positional([this.x = 1]);
+  C.named({this.x: 1});
+}
+''');
+  }
+
+  test_parameterTypeNotInferred_staticMethod() {
+    // Strong mode doesn't do type inference on parameters of static methods,
+    // so it's ok that we don't store inferred type info for them in summaries.
+    checkLibrary('''
+class C {
+  static void positional([x = 1]) {}
+  static void named({x: 1}) {}
+}
+''');
+  }
+
+  test_parameterTypeNotInferred_topLevelFunction() {
+    // Strong mode doesn't do type inference on parameters of top level
+    // functions, so it's ok that we don't store inferred type info for them in
+    // summaries.
+    checkLibrary('''
+void positional([x = 1]) {}
+void named({x: 1}) {}
+''');
+  }
+
+  test_parts() {
+    addSource('/a.dart', 'part of my.lib;');
+    addSource('/b.dart', 'part of my.lib;');
+    checkLibrary('library my.lib; part "a.dart"; part "b.dart";');
+  }
+
+  test_propagated_type_refers_to_closure() {
+    checkLibrary('''
+void f() {
+  var x = () => 0;
+  var y = x;
+}
+''');
+  }
+
+  test_setter_documented() {
+    checkLibrary('''
+// Extra comment so doc comment offset != 0
+/**
+ * Docs
+ */
+void set x(value) {}''');
+  }
+
+  test_setter_external() {
+    checkLibrary('external void set x(int value);');
+  }
+
+  test_setter_inferred_type_nonStatic_implicit_param() {
+    checkLibrary('class C extends D { void set f(value) {} }'
+        ' abstract class D { void set f(int value); }');
+  }
+
+  test_setter_inferred_type_static_implicit_return() {
+    checkLibrary('class C { static set f(int value) {} }');
+  }
+
+  test_setter_inferred_type_top_level_implicit_return() {
+    checkLibrary('set f(int value) {}');
+  }
+
+  test_setters() {
+    checkLibrary('void set x(int value) {} set y(value) {}');
+  }
+
+  test_syntheticFunctionType_genericClosure() {
+    if (!createOptions().strongMode) {
+      // The test below uses generic comment syntax because proper generic
+      // method syntax doesn't support generic closures.  So it can only run in
+      // strong mode.
+      // TODO(paulberry): once proper generic method syntax supports generic
+      // closures, rewrite the test below without using generic comment syntax,
+      // and remove this hack.  See dartbug.com/25819
+      return;
+    }
+    checkLibrary('''
+final v = f() ? /*<T>*/(T t) => 0 : /*<T>*/(T t) => 1;
+bool f() => true;
+''');
+  }
+
+  test_syntheticFunctionType_genericClosure_inGenericFunction() {
+    if (!createOptions().strongMode) {
+      // The test below uses generic comment syntax because proper generic
+      // method syntax doesn't support generic closures.  So it can only run in
+      // strong mode.
+      // TODO(paulberry): once proper generic method syntax supports generic
+      // closures, rewrite the test below without using generic comment syntax,
+      // and remove this hack.  See dartbug.com/25819
+      return;
+    }
+    checkLibrary('''
+void f<T, U>(bool b) {
+  final v = b ? /*<V>*/(T t, U u, V v) => 0 : /*<V>*/(T t, U u, V v) => 1;
+}
+''');
+  }
+
+  test_syntheticFunctionType_inGenericClass() {
+    checkLibrary('''
+class C<T, U> {
+  var v = f() ? (T t, U u) => 0 : (T t, U u) => 1;
+}
+bool f() => false;
+''');
+  }
+
+  test_syntheticFunctionType_inGenericFunction() {
+    checkLibrary('''
+void f<T, U>(bool b) {
+  var v = b ? (T t, U u) => 0 : (T t, U u) => 1;
+}
+''');
+  }
+
+  test_syntheticFunctionType_noArguments() {
+    checkLibrary('''
+final v = f() ? () => 0 : () => 1;
+bool f() => true;
+''');
+  }
+
+  test_syntheticFunctionType_withArguments() {
+    checkLibrary('''
+final v = f() ? (int x, String y) => 0 : (int x, String y) => 1;
+bool f() => true;
+''');
+  }
+
+  test_type_arguments_explicit_dynamic_dynamic() {
+    checkLibrary('Map<dynamic, dynamic> m;');
+  }
+
+  test_type_arguments_explicit_dynamic_int() {
+    checkLibrary('Map<dynamic, int> m;');
+  }
+
+  test_type_arguments_explicit_String_dynamic() {
+    checkLibrary('Map<String, dynamic> m;');
+  }
+
+  test_type_arguments_explicit_String_int() {
+    checkLibrary('Map<String, int> m;');
+  }
+
+  test_type_arguments_implicit() {
+    checkLibrary('Map m;');
+  }
+
+  test_type_dynamic() {
+    checkLibrary('dynamic d;');
+  }
+
+  test_type_reference_lib_to_lib() {
+    checkLibrary('class C {} enum E { v } typedef F(); C c; E e; F f;');
+  }
+
+  test_type_reference_lib_to_part() {
+    addSource('/a.dart', 'part of l; class C {} enum E { v } typedef F();');
+    checkLibrary('library l; part "a.dart"; C c; E e; F f;');
+  }
+
+  test_type_reference_part_to_lib() {
+    addSource('/a.dart', 'part of l; C c; E e; F f;');
+    checkLibrary(
+        'library l; part "a.dart"; class C {} enum E { v } typedef F();');
+  }
+
+  test_type_reference_part_to_other_part() {
+    addSource('/a.dart', 'part of l; class C {} enum E { v } typedef F();');
+    addSource('/b.dart', 'part of l; C c; E e; F f;');
+    checkLibrary('library l; part "a.dart"; part "b.dart";');
+  }
+
+  test_type_reference_part_to_part() {
+    addSource('/a.dart',
+        'part of l; class C {} enum E { v } typedef F(); C c; E e; F f;');
+    checkLibrary('library l; part "a.dart";');
+  }
+
+  test_type_reference_to_class() {
+    checkLibrary('class C {} C c;');
+  }
+
+  test_type_reference_to_class_with_type_arguments() {
+    checkLibrary('class C<T, U> {} C<int, String> c;');
+  }
+
+  test_type_reference_to_class_with_type_arguments_implicit() {
+    checkLibrary('class C<T, U> {} C c;');
+  }
+
+  test_type_reference_to_enum() {
+    checkLibrary('enum E { v } E e;');
+  }
+
+  test_type_reference_to_import() {
+    addLibrarySource('/a.dart', 'class C {} enum E { v }; typedef F();');
+    checkLibrary('import "a.dart"; C c; E e; F f;');
+  }
+
+  test_type_reference_to_import_export() {
+    addLibrarySource('/a.dart', 'export "b.dart";');
+    addLibrarySource('/b.dart', 'class C {} enum E { v } typedef F();');
+    checkLibrary('import "a.dart"; C c; E e; F f;');
+  }
+
+  test_type_reference_to_import_export_export() {
+    addLibrarySource('/a.dart', 'export "b.dart";');
+    addLibrarySource('/b.dart', 'export "c.dart";');
+    addLibrarySource('/c.dart', 'class C {} enum E { v } typedef F();');
+    checkLibrary('import "a.dart"; C c; E e; F f;');
+  }
+
+  test_type_reference_to_import_export_export_in_subdirs() {
+    addLibrarySource('/a/a.dart', 'export "b/b.dart";');
+    addLibrarySource('/a/b/b.dart', 'export "../c/c.dart";');
+    addLibrarySource('/a/c/c.dart', 'class C {} enum E { v } typedef F();');
+    checkLibrary('import "a/a.dart"; C c; E e; F f;');
+  }
+
+  test_type_reference_to_import_export_in_subdirs() {
+    addLibrarySource('/a/a.dart', 'export "b/b.dart";');
+    addLibrarySource('/a/b/b.dart', 'class C {} enum E { v } typedef F();');
+    checkLibrary('import "a/a.dart"; C c; E e; F f;');
+  }
+
+  test_type_reference_to_import_part() {
+    addLibrarySource('/a.dart', 'library l; part "b.dart";');
+    addSource('/b.dart', 'part of l; class C {} enum E { v } typedef F();');
+    checkLibrary('import "a.dart"; C c; E e; F f;');
+  }
+
+  test_type_reference_to_import_part2() {
+    addLibrarySource('/a.dart', 'library l; part "p1.dart"; part "p2.dart";');
+    addSource('/p1.dart', 'part of l; class C1 {}');
+    addSource('/p2.dart', 'part of l; class C2 {}');
+    checkLibrary('import "a.dart"; C1 c1; C2 c2;');
+  }
+
+  test_type_reference_to_import_part_in_subdir() {
+    addLibrarySource('/a/b.dart', 'library l; part "c.dart";');
+    addSource('/a/c.dart', 'part of l; class C {} enum E { v } typedef F();');
+    checkLibrary('import "a/b.dart"; C c; E e; F f;');
+  }
+
+  test_type_reference_to_import_relative() {
+    addLibrarySource('/a.dart', 'class C {} enum E { v } typedef F();');
+    checkLibrary('import "a.dart"; C c; E e; F f;');
+  }
+
+  test_type_reference_to_typedef() {
+    checkLibrary('typedef F(); F f;');
+  }
+
+  test_type_reference_to_typedef_with_type_arguments() {
+    checkLibrary('typedef U F<T, U>(T t); F<int, String> f;');
+  }
+
+  test_type_reference_to_typedef_with_type_arguments_implicit() {
+    checkLibrary('typedef U F<T, U>(T t); F f;');
+  }
+
+  test_type_unresolved() {
+    checkLibrary('C c;', allowErrors: true);
+  }
+
+  test_type_unresolved_prefixed() {
+    checkLibrary('import "dart:core" as core; core.C c;', allowErrors: true);
+  }
+
+  test_typedef_documented() {
+    checkLibrary('''
+// Extra comment so doc comment offset != 0
+/**
+ * Docs
+ */
+typedef F();''');
+  }
+
+  test_typedef_parameter_parameters() {
+    checkLibrary('typedef F(g(x, y));');
+  }
+
+  test_typedef_parameter_parameters_in_generic_class() {
+    checkLibrary('typedef F<A, B>(A g(B x));');
+  }
+
+  test_typedef_parameter_return_type() {
+    checkLibrary('typedef F(int g());');
+  }
+
+  test_typedef_parameter_type() {
+    checkLibrary('typedef F(int i);');
+  }
+
+  test_typedef_parameter_type_generic() {
+    checkLibrary('typedef F<T>(T t);');
+  }
+
+  test_typedef_parameters() {
+    checkLibrary('typedef F(x, y);');
+  }
+
+  test_typedef_return_type() {
+    checkLibrary('typedef int F();');
+  }
+
+  test_typedef_return_type_generic() {
+    checkLibrary('typedef T F<T>();');
+  }
+
+  test_typedef_return_type_implicit() {
+    checkLibrary('typedef F();');
+  }
+
+  test_typedef_return_type_void() {
+    checkLibrary('typedef void F();');
+  }
+
+  test_typedef_type_parameters() {
+    checkLibrary('typedef U F<T, U>(T t);');
+  }
+
+  test_typedef_type_parameters_bound() {
+    checkLibrary('typedef U F<T extends Object, U extends D>(T t); class D {}');
+  }
+
+  test_typedef_type_parameters_f_bound_complex() {
+    checkLibrary('typedef U F<T extends List<U>, U>(T t);');
+  }
+
+  test_typedef_type_parameters_f_bound_simple() {
+    checkLibrary('typedef U F<T extends U, U>(T t);');
+  }
+
+  test_typedefs() {
+    checkLibrary('f() {} g() {}');
+  }
+
+  test_unresolved_annotation_namedConstructorCall_noClass() {
+    checkLibrary('@foo.bar() class C {}');
+  }
+
+  test_unresolved_annotation_namedConstructorCall_noConstructor() {
+    checkLibrary('@String.foo() class C {}');
+  }
+
+  test_unresolved_annotation_prefixedIdentifier_badPrefix() {
+    checkLibrary('@foo.bar class C {}');
+  }
+
+  test_unresolved_annotation_prefixedIdentifier_noDeclaration() {
+    checkLibrary('import "dart:async" as foo; @foo.bar class C {}');
+  }
+
+  test_unresolved_annotation_prefixedNamedConstructorCall_badPrefix() {
+    checkLibrary('@foo.bar.baz() class C {}');
+  }
+
+  test_unresolved_annotation_prefixedNamedConstructorCall_noClass() {
+    checkLibrary('import "dart:async" as foo; @foo.bar.baz() class C {}');
+  }
+
+  test_unresolved_annotation_prefixedNamedConstructorCall_noConstructor() {
+    checkLibrary('import "dart:async" as foo; @foo.Future.bar() class C {}');
+  }
+
+  test_unresolved_annotation_prefixedUnnamedConstructorCall_badPrefix() {
+    checkLibrary('@foo.bar() class C {}');
+  }
+
+  test_unresolved_annotation_prefixedUnnamedConstructorCall_noClass() {
+    checkLibrary('import "dart:async" as foo; @foo.bar() class C {}');
+  }
+
+  test_unresolved_annotation_simpleIdentifier() {
+    checkLibrary('@foo class C {}');
+  }
+
+  test_unresolved_annotation_unnamedConstructorCall_noClass() {
+    checkLibrary('@foo() class C {}');
+  }
+
+  test_unresolved_export() {
+    allowMissingFiles = true;
+    checkLibrary("export 'foo.dart';", allowErrors: true);
+  }
+
+  test_unresolved_import() {
+    allowMissingFiles = true;
+    checkLibrary("import 'foo.dart';", allowErrors: true);
+  }
+
+  test_unresolved_part() {
+    allowMissingFiles = true;
+    checkLibrary("part 'foo.dart';", allowErrors: true);
+  }
+
+  test_unused_type_parameter() {
+    checkLibrary('''
+class C<T> {
+  void f() {}
+}
+C<int> c;
+var v = c.f;
+''');
+  }
+
+  test_variable_const() {
+    checkLibrary('const int i = 0;');
+  }
+
+  test_variable_documented() {
+    checkLibrary('''
+// Extra comment so doc comment offset != 0
+/**
+ * Docs
+ */
+var x;''');
+  }
+
+  test_variable_final() {
+    checkLibrary('final int x = 0;');
+  }
+
+  test_variable_final_top_level_untyped() {
+    checkLibrary('final v = 0;');
+  }
+
+  test_variable_getterInLib_setterInPart() {
+    addSource('/a.dart', 'part of my.lib; void set x(int _) {}');
+    checkLibrary('library my.lib; part "a.dart"; int get x => 42;');
+  }
+
+  test_variable_getterInPart_setterInLib() {
+    addSource('/a.dart', 'part of my.lib; int get x => 42;');
+    checkLibrary('library my.lib; part "a.dart"; void set x(int _) {}');
+  }
+
+  test_variable_getterInPart_setterInPart() {
+    addSource('/a.dart', 'part of my.lib; int get x => 42;');
+    addSource('/b.dart', 'part of my.lib; void set x(int _) {}');
+    checkLibrary('library my.lib; part "a.dart"; part "b.dart";');
+  }
+
+  test_variable_implicit_type() {
+    checkLibrary('var x;');
+  }
+
+  test_variable_inferred_type_implicit_initialized() {
+    checkLibrary('var v = 0;');
+  }
+
+  test_variable_propagatedType_const_noDep() {
+    checkLibrary('const i = 0;');
+  }
+
+  test_variable_propagatedType_final_dep_inLib() {
+    addLibrarySource('/a.dart', 'final a = 1;');
+    checkLibrary('import "a.dart"; final b = a / 2;');
+  }
+
+  test_variable_propagatedType_final_dep_inPart() {
+    addSource('/a.dart', 'part of lib; final a = 1;');
+    checkLibrary('library lib; part "a.dart"; final b = a / 2;');
+  }
+
+  test_variable_propagatedType_final_noDep() {
+    checkLibrary('final i = 0;');
+  }
+
+  test_variable_propagatedType_implicit_dep() {
+    // The propagated type is defined in a library that is not imported.
+    addLibrarySource('/a.dart', 'class C {}');
+    addLibrarySource('/b.dart', 'import "a.dart"; C f() => null;');
+    checkLibrary('import "b.dart"; final x = f();');
+  }
+
+  test_variable_setterInPart_getterInPart() {
+    addSource('/a.dart', 'part of my.lib; void set x(int _) {}');
+    addSource('/b.dart', 'part of my.lib; int get x => 42;');
+    checkLibrary('library my.lib; part "a.dart"; part "b.dart";');
+  }
+
+  test_variables() {
+    checkLibrary('int i; int j;');
+  }
+
+  /**
+   * Encode the library containing [original] into a summary and then use
+   * [TestSummaryResynthesizer.getElement] to retrieve just the original
+   * element from the resynthesized summary.
+   */
+  Element validateGetElement(String text, Element original) {
+    SummaryResynthesizer resynthesizer =
+        encodeDecodeLibrarySource(original.library.source);
+    ElementLocationImpl location = original.location;
+    Element result = resynthesizer.getElement(location);
+    checkMinimalResynthesisWork(resynthesizer, original.library);
+    // Check that no other summaries needed to be resynthesized to resynthesize
+    // the library element.
+    expect(resynthesizer.resynthesisCount, 1);
+    expect(result.location, location);
+    return result;
+  }
+}
+
+class TestSummaryResynthesizer extends SummaryResynthesizer {
+  final Map<String, UnlinkedUnit> unlinkedSummaries;
+  final Map<String, LinkedLibrary> linkedSummaries;
+  final bool allowMissingFiles;
+
+  /**
+   * The set of uris for which unlinked summaries have been requested using
+   * [getUnlinkedSummary].
+   */
+  final Set<String> unlinkedSummariesRequested = new Set<String>();
+
+  /**
+   * The set of uris for which linked summaries have been requested using
+   * [getLinkedSummary].
+   */
+  final Set<String> linkedSummariesRequested = new Set<String>();
+
+  TestSummaryResynthesizer(SummaryResynthesizer parent, AnalysisContext context,
+      this.unlinkedSummaries, this.linkedSummaries, this.allowMissingFiles)
+      : super(parent, context, context.typeProvider, context.sourceFactory,
+            context.analysisOptions.strongMode);
+
+  @override
+  LinkedLibrary getLinkedSummary(String uri) {
+    linkedSummariesRequested.add(uri);
+    LinkedLibrary serializedLibrary = linkedSummaries[uri];
+    if (serializedLibrary == null && !allowMissingFiles) {
+      fail('Unexpectedly tried to get linked summary for $uri');
+    }
+    return serializedLibrary;
+  }
+
+  @override
+  UnlinkedUnit getUnlinkedSummary(String uri) {
+    unlinkedSummariesRequested.add(uri);
+    UnlinkedUnit serializedUnit = unlinkedSummaries[uri];
+    if (serializedUnit == null && !allowMissingFiles) {
+      fail('Unexpectedly tried to get unlinked summary for $uri');
+    }
+    return serializedUnit;
+  }
+
+  @override
+  bool hasLibrarySummary(String uri) {
+    return true;
+  }
+}