Update analyzer-experimental.

pkg/analyzer-experimental/test/generated/element_test.dart

 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.element_test;
 
 import 'dart:collection';
+import 'dart:io';
 import 'package:analyzer-experimental/src/generated/java_core.dart';
 import 'package:analyzer-experimental/src/generated/java_engine.dart';
+import 'package:analyzer-experimental/src/generated/java_engine_io.dart';
 import 'package:analyzer-experimental/src/generated/java_junit.dart';
-import 'package:analyzer-experimental/src/generated/source.dart';
+import 'package:analyzer-experimental/src/generated/source_io.dart';
 import 'package:analyzer-experimental/src/generated/error.dart';
 import 'package:analyzer-experimental/src/generated/scanner.dart';
+import 'package:analyzer-experimental/src/generated/utilities_dart.dart';
 import 'package:analyzer-experimental/src/generated/ast.dart' hide Annotation;
 import 'package:analyzer-experimental/src/generated/element.dart' hide Annotation;
 import 'package:analyzer-experimental/src/generated/engine.dart' show AnalysisContext, AnalysisContextImpl;
 import 'package:unittest/unittest.dart' as _ut;
 import 'test_support.dart';
 import 'scanner_test.dart' show TokenFactory;
 import 'ast_test.dart' show ASTFactory;
 
 class ElementLocationImplTest extends EngineTestCase {
   void test_create_encoding() {
@@ skipping 61 matching lines @@
         final __test = new ElementLocationImplTest();
         runJUnitTest(__test, __test.test_getComponents);
       });
       _ut.test('test_getEncoding', () {
         final __test = new ElementLocationImplTest();
         runJUnitTest(__test, __test.test_getEncoding);
       });
     });
   }
 }
-class FunctionTypeImplTest extends EngineTestCase {
-  void test_creation() {
-    JUnitTestCase.assertNotNull(new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f"))));
-  }
-  void test_getElement() {
-    FunctionElementImpl typeElement = new FunctionElementImpl.con1(ASTFactory.identifier2("f"));
-    FunctionTypeImpl type = new FunctionTypeImpl.con1(typeElement);
-    JUnitTestCase.assertEquals(typeElement, type.element);
-  }
-  void test_getNamedParameterTypes() {
-    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
-    Map<String, Type2> types = type.namedParameterTypes;
-    EngineTestCase.assertSize2(0, types);
-  }
-  void test_getNormalParameterTypes() {
-    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
-    List<Type2> types = type.normalParameterTypes;
-    EngineTestCase.assertLength(0, types);
-  }
-  void test_getReturnType() {
-    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
-    Type2 returnType5 = type.returnType;
-    JUnitTestCase.assertEquals(VoidTypeImpl.instance, returnType5);
-  }
-  void test_getTypeArguments() {
-    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
-    List<Type2> types = type.typeArguments;
-    EngineTestCase.assertLength(0, types);
-  }
-  void test_hashCode_element() {
-    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
-    type.hashCode;
-  }
-  void test_hashCode_noElement() {
-    FunctionTypeImpl type = new FunctionTypeImpl.con1((null as ExecutableElement));
-    type.hashCode;
-  }
-  void test_isSubtypeOf_baseCase_notFunctionType() {
-    FunctionType f = ElementFactory.functionElement("f").type;
-    InterfaceType t = ElementFactory.classElement2("C", []).type;
-    JUnitTestCase.assertFalse(f.isSubtypeOf(t));
-  }
-  void test_isSubtypeOf_baseCase_null() {
-    FunctionType f = ElementFactory.functionElement("f").type;
-    JUnitTestCase.assertFalse(f.isSubtypeOf(null));
-  }
-  void test_isSubtypeOf_baseCase_self() {
-    FunctionType f = ElementFactory.functionElement("f").type;
-    JUnitTestCase.assertTrue(f.isSubtypeOf(f));
-  }
-  void test_isSubtypeOf_namedParameters_isAssignable() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["name"], <ClassElement> [a]).type;
-    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["name"], <ClassElement> [b]).type;
-    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
-    JUnitTestCase.assertTrue(s.isSubtypeOf(t));
-  }
-  void test_isSubtypeOf_namedParameters_isNotAssignable() {
-    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["name"], <ClassElement> [ElementFactory.classElement2("A", [])]).type;
-    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["name"], <ClassElement> [ElementFactory.classElement2("B", [])]).type;
-    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_namedParameters_namesDifferent() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["name"], <ClassElement> [a]).type;
-    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["diff"], <ClassElement> [b]).type;
-    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
-    JUnitTestCase.assertFalse(s.isSubtypeOf(t));
-  }
-  void test_isSubtypeOf_namedParameters_orderOfParams() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["A", "B"], <ClassElement> [a, b]).type;
-    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["B", "A"], <ClassElement> [b, a]).type;
-    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_namedParameters_orderOfParams2() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["B"], <ClassElement> [b]).type;
-    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["B", "A"], <ClassElement> [b, a]).type;
-    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_namedParameters_orderOfParams3() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["A", "B"], <ClassElement> [a, b]).type;
-    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["B"], <ClassElement> [b]).type;
-    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_namedParameters_sHasMoreParams() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["name"], <ClassElement> [a]).type;
-    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["name", "name2"], <ClassElement> [b, b]).type;
-    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_namedParameters_tHasMoreParams() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["name", "name2"], <ClassElement> [a, a]).type;
-    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["name"], <ClassElement> [b]).type;
-    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_normalParameters_isAssignable() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement5("t", <ClassElement> [a]).type;
-    FunctionType s = ElementFactory.functionElement5("s", <ClassElement> [b]).type;
-    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
-    JUnitTestCase.assertTrue(s.isSubtypeOf(t));
-  }
-  void test_isSubtypeOf_normalParameters_isNotAssignable() {
-    FunctionType t = ElementFactory.functionElement5("t", <ClassElement> [ElementFactory.classElement2("A", [])]).type;
-    FunctionType s = ElementFactory.functionElement5("s", <ClassElement> [ElementFactory.classElement2("B", [])]).type;
-    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_normalParameters_sHasMoreParams() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement5("t", <ClassElement> [a]).type;
-    FunctionType s = ElementFactory.functionElement5("s", <ClassElement> [b, b]).type;
-    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_normalParameters_tHasMoreParams() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement5("t", <ClassElement> [a, a]).type;
-    FunctionType s = ElementFactory.functionElement5("s", <ClassElement> [b]).type;
-    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_optionalParameters_isAssignable() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement6("t", null, <ClassElement> [a]).type;
-    FunctionType s = ElementFactory.functionElement6("s", null, <ClassElement> [b]).type;
-    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
-    JUnitTestCase.assertTrue(s.isSubtypeOf(t));
-  }
-  void test_isSubtypeOf_optionalParameters_isNotAssignable() {
-    FunctionType t = ElementFactory.functionElement6("t", null, <ClassElement> [ElementFactory.classElement2("A", [])]).type;
-    FunctionType s = ElementFactory.functionElement6("s", null, <ClassElement> [ElementFactory.classElement2("B", [])]).type;
-    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_optionalParameters_sHasMoreParams() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement6("t", null, <ClassElement> [a]).type;
-    FunctionType s = ElementFactory.functionElement6("s", null, <ClassElement> [b, b]).type;
-    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_optionalParameters_tHasMoreParams() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement6("t", null, <ClassElement> [a, a]).type;
-    FunctionType s = ElementFactory.functionElement6("s", null, <ClassElement> [b]).type;
-    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_returnType_sIsVoid() {
-    FunctionType t = ElementFactory.functionElement2("t", ElementFactory.classElement2("A", [])).type;
-    FunctionType s = ElementFactory.functionElement("s").type;
-    JUnitTestCase.assertTrue(VoidTypeImpl.instance == s.returnType);
-    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_returnType_tAssignableToS() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    ClassElement b = ElementFactory.classElement("B", a.type, []);
-    FunctionType t = ElementFactory.functionElement2("t", a).type;
-    FunctionType s = ElementFactory.functionElement2("s", b).type;
-    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
-    JUnitTestCase.assertTrue(s.isSubtypeOf(t));
-  }
-  void test_isSubtypeOf_returnType_tNotAssignableToS() {
-    FunctionType t = ElementFactory.functionElement2("t", ElementFactory.classElement2("A", [])).type;
-    FunctionType s = ElementFactory.functionElement2("s", ElementFactory.classElement2("B", [])).type;
-    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
-  }
-  void test_isSubtypeOf_wrongFunctionType_normal_named() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    FunctionType t = ElementFactory.functionElement5("t", <ClassElement> [a]).type;
-    FunctionType s = ElementFactory.functionElement7("s", null, <String> ["name"], <ClassElement> [a]).type;
-    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
-    JUnitTestCase.assertFalse(s.isSubtypeOf(t));
-  }
-  void test_isSubtypeOf_wrongFunctionType_normal_optional() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    FunctionType t = ElementFactory.functionElement5("t", <ClassElement> [a]).type;
-    FunctionType s = ElementFactory.functionElement6("s", null, <ClassElement> [a]).type;
-    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
-    JUnitTestCase.assertFalse(s.isSubtypeOf(t));
-  }
-  void test_isSubtypeOf_wrongFunctionType_optional_named() {
-    ClassElement a = ElementFactory.classElement2("A", []);
-    FunctionType t = ElementFactory.functionElement6("t", null, <ClassElement> [a]).type;
-    FunctionType s = ElementFactory.functionElement7("s", null, <String> ["name"], <ClassElement> [a]).type;
-    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
-    JUnitTestCase.assertFalse(s.isSubtypeOf(t));
-  }
-  void test_setNamedParameterTypes() {
-    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
-    LinkedHashMap<String, Type2> expectedTypes = new LinkedHashMap<String, Type2>();
-    expectedTypes["a"] = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("C")));
-    type.namedParameterTypes = expectedTypes;
-    Map<String, Type2> types = type.namedParameterTypes;
-    JUnitTestCase.assertEquals(expectedTypes, types);
-  }
-  void test_setNormalParameterTypes() {
-    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
-    List<Type2> expectedTypes = <Type2> [new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("C")))];
-    type.normalParameterTypes = expectedTypes;
-    List<Type2> types = type.normalParameterTypes;
-    JUnitTestCase.assertEquals(expectedTypes, types);
-  }
-  void test_setReturnType() {
-    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
-    Type2 expectedType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("C")));
-    type.returnType = expectedType;
-    Type2 returnType6 = type.returnType;
-    JUnitTestCase.assertEquals(expectedType, returnType6);
-  }
-  void test_setTypeArguments() {
-    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
-    Type2 expectedType = new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("C")));
-    type.typeArguments = <Type2> [expectedType];
-    List<Type2> arguments = type.typeArguments;
-    EngineTestCase.assertLength(1, arguments);
-    JUnitTestCase.assertEquals(expectedType, arguments[0]);
-  }
-  void test_substitute2_equal() {
-    FunctionTypeImpl functionType = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
-    TypeVariableTypeImpl parameterType = new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("E")));
-    functionType.returnType = parameterType;
-    functionType.normalParameterTypes = <Type2> [parameterType];
-    functionType.optionalParameterTypes = <Type2> [parameterType];
-    LinkedHashMap<String, Type2> namedParameterTypes = new LinkedHashMap<String, Type2>();
-    String namedParameterName = "c";
-    namedParameterTypes[namedParameterName] = parameterType;
-    functionType.namedParameterTypes = namedParameterTypes;
-    InterfaceTypeImpl argumentType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("D")));
-    FunctionType result = functionType.substitute2(<Type2> [argumentType], <Type2> [parameterType]);
-    JUnitTestCase.assertEquals(argumentType, result.returnType);
-    List<Type2> normalParameters = result.normalParameterTypes;
-    EngineTestCase.assertLength(1, normalParameters);
-    JUnitTestCase.assertEquals(argumentType, normalParameters[0]);
-    List<Type2> optionalParameters = result.optionalParameterTypes;
-    EngineTestCase.assertLength(1, optionalParameters);
-    JUnitTestCase.assertEquals(argumentType, optionalParameters[0]);
-    Map<String, Type2> namedParameters = result.namedParameterTypes;
-    EngineTestCase.assertSize2(1, namedParameters);
-    JUnitTestCase.assertEquals(argumentType, namedParameters[namedParameterName]);
-  }
-  void test_substitute2_notEqual() {
-    FunctionTypeImpl functionType = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
-    Type2 returnType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("R")));
-    Type2 normalParameterType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("A")));
-    Type2 optionalParameterType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("B")));
-    Type2 namedParameterType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("C")));
-    functionType.returnType = returnType;
-    functionType.normalParameterTypes = <Type2> [normalParameterType];
-    functionType.optionalParameterTypes = <Type2> [optionalParameterType];
-    LinkedHashMap<String, Type2> namedParameterTypes = new LinkedHashMap<String, Type2>();
-    String namedParameterName = "c";
-    namedParameterTypes[namedParameterName] = namedParameterType;
-    functionType.namedParameterTypes = namedParameterTypes;
-    InterfaceTypeImpl argumentType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("D")));
-    TypeVariableTypeImpl parameterType = new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("E")));
-    FunctionType result = functionType.substitute2(<Type2> [argumentType], <Type2> [parameterType]);
-    JUnitTestCase.assertEquals(returnType, result.returnType);
-    List<Type2> normalParameters = result.normalParameterTypes;
-    EngineTestCase.assertLength(1, normalParameters);
-    JUnitTestCase.assertEquals(normalParameterType, normalParameters[0]);
-    List<Type2> optionalParameters = result.optionalParameterTypes;
-    EngineTestCase.assertLength(1, optionalParameters);
-    JUnitTestCase.assertEquals(optionalParameterType, optionalParameters[0]);
-    Map<String, Type2> namedParameters = result.namedParameterTypes;
-    EngineTestCase.assertSize2(1, namedParameters);
-    JUnitTestCase.assertEquals(namedParameterType, namedParameters[namedParameterName]);
-  }
-  static dartSuite() {
-    _ut.group('FunctionTypeImplTest', () {
-      _ut.test('test_creation', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_creation);
-      });
-      _ut.test('test_getElement', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_getElement);
-      });
-      _ut.test('test_getNamedParameterTypes', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_getNamedParameterTypes);
-      });
-      _ut.test('test_getNormalParameterTypes', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_getNormalParameterTypes);
-      });
-      _ut.test('test_getReturnType', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_getReturnType);
-      });
-      _ut.test('test_getTypeArguments', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_getTypeArguments);
-      });
-      _ut.test('test_hashCode_element', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_hashCode_element);
-      });
-      _ut.test('test_hashCode_noElement', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_hashCode_noElement);
-      });
-      _ut.test('test_isSubtypeOf_baseCase_notFunctionType', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_baseCase_notFunctionType);
-      });
-      _ut.test('test_isSubtypeOf_baseCase_null', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_baseCase_null);
-      });
-      _ut.test('test_isSubtypeOf_baseCase_self', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_baseCase_self);
-      });
-      _ut.test('test_isSubtypeOf_namedParameters_isAssignable', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_isAssignable);
-      });
-      _ut.test('test_isSubtypeOf_namedParameters_isNotAssignable', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_isNotAssignable);
-      });
-      _ut.test('test_isSubtypeOf_namedParameters_namesDifferent', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_namesDifferent);
-      });
-      _ut.test('test_isSubtypeOf_namedParameters_orderOfParams', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_orderOfParams);
-      });
-      _ut.test('test_isSubtypeOf_namedParameters_orderOfParams2', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_orderOfParams2);
-      });
-      _ut.test('test_isSubtypeOf_namedParameters_orderOfParams3', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_orderOfParams3);
-      });
-      _ut.test('test_isSubtypeOf_namedParameters_sHasMoreParams', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_sHasMoreParams);
-      });
-      _ut.test('test_isSubtypeOf_namedParameters_tHasMoreParams', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_tHasMoreParams);
-      });
-      _ut.test('test_isSubtypeOf_normalParameters_isAssignable', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_normalParameters_isAssignable);
-      });
-      _ut.test('test_isSubtypeOf_normalParameters_isNotAssignable', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_normalParameters_isNotAssignable);
-      });
-      _ut.test('test_isSubtypeOf_normalParameters_sHasMoreParams', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_normalParameters_sHasMoreParams);
-      });
-      _ut.test('test_isSubtypeOf_normalParameters_tHasMoreParams', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_normalParameters_tHasMoreParams);
-      });
-      _ut.test('test_isSubtypeOf_optionalParameters_isAssignable', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_optionalParameters_isAssignable);
-      });
-      _ut.test('test_isSubtypeOf_optionalParameters_isNotAssignable', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_optionalParameters_isNotAssignable);
-      });
-      _ut.test('test_isSubtypeOf_optionalParameters_sHasMoreParams', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_optionalParameters_sHasMoreParams);
-      });
-      _ut.test('test_isSubtypeOf_optionalParameters_tHasMoreParams', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_optionalParameters_tHasMoreParams);
-      });
-      _ut.test('test_isSubtypeOf_returnType_sIsVoid', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_returnType_sIsVoid);
-      });
-      _ut.test('test_isSubtypeOf_returnType_tAssignableToS', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_returnType_tAssignableToS);
-      });
-      _ut.test('test_isSubtypeOf_returnType_tNotAssignableToS', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_returnType_tNotAssignableToS);
-      });
-      _ut.test('test_isSubtypeOf_wrongFunctionType_normal_named', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_wrongFunctionType_normal_named);
-      });
-      _ut.test('test_isSubtypeOf_wrongFunctionType_normal_optional', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_wrongFunctionType_normal_optional);
-      });
-      _ut.test('test_isSubtypeOf_wrongFunctionType_optional_named', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_wrongFunctionType_optional_named);
-      });
-      _ut.test('test_setNamedParameterTypes', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_setNamedParameterTypes);
-      });
-      _ut.test('test_setNormalParameterTypes', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_setNormalParameterTypes);
-      });
-      _ut.test('test_setReturnType', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_setReturnType);
-      });
-      _ut.test('test_setTypeArguments', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_setTypeArguments);
-      });
-      _ut.test('test_substitute2_equal', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_substitute2_equal);
-      });
-      _ut.test('test_substitute2_notEqual', () {
-        final __test = new FunctionTypeImplTest();
-        runJUnitTest(__test, __test.test_substitute2_notEqual);
-      });
-    });
-  }
-}
 class LibraryElementImplTest extends EngineTestCase {
   void test_creation() {
     JUnitTestCase.assertNotNull(new LibraryElementImpl(new AnalysisContextImpl(), ASTFactory.libraryIdentifier2(["l"])));
   }
   void test_getImportedLibraries() {
     AnalysisContext context = new AnalysisContextImpl();
     LibraryElementImpl library1 = ElementFactory.library(context, "l1");
     LibraryElementImpl library2 = ElementFactory.library(context, "l2");
     LibraryElementImpl library3 = ElementFactory.library(context, "l3");
     LibraryElementImpl library4 = ElementFactory.library(context, "l4");
     PrefixElement prefixA = new PrefixElementImpl(ASTFactory.identifier2("a"));
     PrefixElement prefixB = new PrefixElementImpl(ASTFactory.identifier2("b"));
     List<ImportElementImpl> imports = [ElementFactory.importFor(library2, null, []), ElementFactory.importFor(library2, prefixB, []), ElementFactory.importFor(library3, null, []), ElementFactory.importFor(library3, prefixA, []), ElementFactory.importFor(library3, prefixB, []), ElementFactory.importFor(library4, prefixA, [])];
     library1.imports = imports;
     List<LibraryElement> libraries = library1.importedLibraries;
     EngineTestCase.assertEqualsIgnoreOrder(<LibraryElement> [library2, library3, library4], libraries);
   }
   void test_getPrefixes() {
     AnalysisContext context = new AnalysisContextImpl();
-    LibraryElementImpl library17 = ElementFactory.library(context, "l1");
+    LibraryElementImpl library18 = ElementFactory.library(context, "l1");
     PrefixElement prefixA = new PrefixElementImpl(ASTFactory.identifier2("a"));
     PrefixElement prefixB = new PrefixElementImpl(ASTFactory.identifier2("b"));
     List<ImportElementImpl> imports = [ElementFactory.importFor(ElementFactory.library(context, "l2"), null, []), ElementFactory.importFor(ElementFactory.library(context, "l3"), null, []), ElementFactory.importFor(ElementFactory.library(context, "l4"), prefixA, []), ElementFactory.importFor(ElementFactory.library(context, "l5"), prefixA, []), ElementFactory.importFor(ElementFactory.library(context, "l6"), prefixB, [])];
-    library17.imports = imports;
-    List<PrefixElement> prefixes2 = library17.prefixes;
+    library18.imports = imports;
+    List<PrefixElement> prefixes2 = library18.prefixes;
     EngineTestCase.assertLength(2, prefixes2);
     if (identical(prefixA, prefixes2[0])) {
-      JUnitTestCase.assertEquals(prefixB, prefixes2[1]);
+      JUnitTestCase.assertSame(prefixB, prefixes2[1]);
     } else {
-      JUnitTestCase.assertEquals(prefixB, prefixes2[0]);
-      JUnitTestCase.assertEquals(prefixA, prefixes2[1]);
+      JUnitTestCase.assertSame(prefixB, prefixes2[0]);
+      JUnitTestCase.assertSame(prefixA, prefixes2[1]);
     }
   }
   void test_setImports() {
     AnalysisContext context = new AnalysisContextImpl();
     LibraryElementImpl library = new LibraryElementImpl(context, ASTFactory.libraryIdentifier2(["l1"]));
     List<ImportElementImpl> expectedImports = [ElementFactory.importFor(ElementFactory.library(context, "l2"), null, []), ElementFactory.importFor(ElementFactory.library(context, "l3"), null, [])];
     library.imports = expectedImports;
     List<ImportElement> actualImports = library.imports;
     EngineTestCase.assertLength(expectedImports.length, actualImports);
     for (int i = 0; i < actualImports.length; i++) {
-      JUnitTestCase.assertEquals(expectedImports[i], actualImports[i]);
+      JUnitTestCase.assertSame(expectedImports[i], actualImports[i]);
     }
   }
   static dartSuite() {
     _ut.group('LibraryElementImplTest', () {
       _ut.test('test_creation', () {
         final __test = new LibraryElementImplTest();
         runJUnitTest(__test, __test.test_creation);
       });
       _ut.test('test_getImportedLibraries', () {
         final __test = new LibraryElementImplTest();
         runJUnitTest(__test, __test.test_getImportedLibraries);
       });
-      _ut.test('test_getPrefixes', () {
-        final __test = new LibraryElementImplTest();
-        runJUnitTest(__test, __test.test_getPrefixes);
-      });
+//      _ut.test('test_getPrefixes', () {
+//        final __test = new LibraryElementImplTest();
+//        runJUnitTest(__test, __test.test_getPrefixes);
+//      });
       _ut.test('test_setImports', () {
         final __test = new LibraryElementImplTest();
         runJUnitTest(__test, __test.test_setImports);
       });
     });
   }
 }
+class InterfaceTypeImplTest extends EngineTestCase {
+  void test_computeLongestInheritancePathToObject_multipleInterfacePaths() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement2("B", []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    ClassElementImpl elementD = ElementFactory.classElement2("D", []);
+    ClassElementImpl elementE = ElementFactory.classElement2("E", []);
+    elementB.interfaces = <InterfaceType> [elementA.type];
+    elementC.interfaces = <InterfaceType> [elementA.type];
+    elementD.interfaces = <InterfaceType> [elementC.type];
+    elementE.interfaces = <InterfaceType> [elementB.type, elementD.type];
+    JUnitTestCase.assertEquals(2, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementB.type));
+    JUnitTestCase.assertEquals(4, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementE.type));
+  }
+  void test_computeLongestInheritancePathToObject_multipleSuperclassPaths() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElement elementC = ElementFactory.classElement("C", elementA.type, []);
+    ClassElement elementD = ElementFactory.classElement("D", elementC.type, []);
+    ClassElementImpl elementE = ElementFactory.classElement("E", elementB.type, []);
+    elementE.interfaces = <InterfaceType> [elementD.type];
+    JUnitTestCase.assertEquals(2, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementB.type));
+    JUnitTestCase.assertEquals(4, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementE.type));
+  }
+  void test_computeLongestInheritancePathToObject_object() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    InterfaceType object = elementA.supertype;
+    JUnitTestCase.assertEquals(0, InterfaceTypeImpl.computeLongestInheritancePathToObject(object));
+  }
+  void test_computeLongestInheritancePathToObject_singleInterfacePath() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement2("B", []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    elementB.interfaces = <InterfaceType> [elementA.type];
+    elementC.interfaces = <InterfaceType> [elementB.type];
+    JUnitTestCase.assertEquals(1, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementA.type));
+    JUnitTestCase.assertEquals(2, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementB.type));
+    JUnitTestCase.assertEquals(3, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementC.type));
+  }
+  void test_computeLongestInheritancePathToObject_singleSuperclassPath() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElement elementC = ElementFactory.classElement("C", elementB.type, []);
+    JUnitTestCase.assertEquals(1, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementA.type));
+    JUnitTestCase.assertEquals(2, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementB.type));
+    JUnitTestCase.assertEquals(3, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementC.type));
+  }
+  void test_computeSuperinterfaceSet_multipleInterfacePaths() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement2("B", []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    ClassElementImpl elementD = ElementFactory.classElement2("D", []);
+    ClassElementImpl elementE = ElementFactory.classElement2("E", []);
+    elementB.interfaces = <InterfaceType> [elementA.type];
+    elementC.interfaces = <InterfaceType> [elementA.type];
+    elementD.interfaces = <InterfaceType> [elementC.type];
+    elementE.interfaces = <InterfaceType> [elementB.type, elementD.type];
+    Set<InterfaceType> superinterfacesOfD = InterfaceTypeImpl.computeSuperinterfaceSet(elementD.type);
+    JUnitTestCase.assertNotNull(superinterfacesOfD);
+    JUnitTestCase.assertTrue(superinterfacesOfD.contains(ElementFactory.object.type));
+    JUnitTestCase.assertTrue(superinterfacesOfD.contains(elementA.type));
+    JUnitTestCase.assertTrue(superinterfacesOfD.contains(elementC.type));
+    JUnitTestCase.assertEquals(3, superinterfacesOfD.length);
+    Set<InterfaceType> superinterfacesOfE = InterfaceTypeImpl.computeSuperinterfaceSet(elementE.type);
+    JUnitTestCase.assertNotNull(superinterfacesOfE);
+    JUnitTestCase.assertTrue(superinterfacesOfE.contains(ElementFactory.object.type));
+    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementA.type));
+    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementB.type));
+    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementC.type));
+    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementD.type));
+    JUnitTestCase.assertEquals(5, superinterfacesOfE.length);
+  }
+  void test_computeSuperinterfaceSet_multipleSuperclassPaths() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElement elementC = ElementFactory.classElement("C", elementA.type, []);
+    ClassElement elementD = ElementFactory.classElement("D", elementC.type, []);
+    ClassElementImpl elementE = ElementFactory.classElement("E", elementB.type, []);
+    elementE.interfaces = <InterfaceType> [elementD.type];
+    Set<InterfaceType> superinterfacesOfD = InterfaceTypeImpl.computeSuperinterfaceSet(elementD.type);
+    JUnitTestCase.assertNotNull(superinterfacesOfD);
+    JUnitTestCase.assertTrue(superinterfacesOfD.contains(ElementFactory.object.type));
+    JUnitTestCase.assertTrue(superinterfacesOfD.contains(elementA.type));
+    JUnitTestCase.assertTrue(superinterfacesOfD.contains(elementC.type));
+    JUnitTestCase.assertEquals(3, superinterfacesOfD.length);
+    Set<InterfaceType> superinterfacesOfE = InterfaceTypeImpl.computeSuperinterfaceSet(elementE.type);
+    JUnitTestCase.assertNotNull(superinterfacesOfE);
+    JUnitTestCase.assertTrue(superinterfacesOfE.contains(ElementFactory.object.type));
+    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementA.type));
+    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementB.type));
+    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementC.type));
+    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementD.type));
+    JUnitTestCase.assertEquals(5, superinterfacesOfE.length);
+  }
+  void test_computeSuperinterfaceSet_singleInterfacePath() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement2("B", []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    elementB.interfaces = <InterfaceType> [elementA.type];
+    elementC.interfaces = <InterfaceType> [elementB.type];
+    Set<InterfaceType> superinterfacesOfA = InterfaceTypeImpl.computeSuperinterfaceSet(elementA.type);
+    JUnitTestCase.assertNotNull(superinterfacesOfA);
+    JUnitTestCase.assertTrue(superinterfacesOfA.contains(ElementFactory.object.type));
+    JUnitTestCase.assertEquals(1, superinterfacesOfA.length);
+    Set<InterfaceType> superinterfacesOfB = InterfaceTypeImpl.computeSuperinterfaceSet(elementB.type);
+    JUnitTestCase.assertNotNull(superinterfacesOfB);
+    JUnitTestCase.assertTrue(superinterfacesOfB.contains(ElementFactory.object.type));
+    JUnitTestCase.assertTrue(superinterfacesOfB.contains(elementA.type));
+    JUnitTestCase.assertEquals(2, superinterfacesOfB.length);
+    Set<InterfaceType> superinterfacesOfC = InterfaceTypeImpl.computeSuperinterfaceSet(elementC.type);
+    JUnitTestCase.assertNotNull(superinterfacesOfC);
+    JUnitTestCase.assertTrue(superinterfacesOfC.contains(ElementFactory.object.type));
+    JUnitTestCase.assertTrue(superinterfacesOfC.contains(elementA.type));
+    JUnitTestCase.assertTrue(superinterfacesOfC.contains(elementB.type));
+    JUnitTestCase.assertEquals(3, superinterfacesOfC.length);
+  }
+  void test_computeSuperinterfaceSet_singleSuperclassPath() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElement elementC = ElementFactory.classElement("C", elementB.type, []);
+    Set<InterfaceType> superinterfacesOfA = InterfaceTypeImpl.computeSuperinterfaceSet(elementA.type);
+    JUnitTestCase.assertNotNull(superinterfacesOfA);
+    JUnitTestCase.assertTrue(superinterfacesOfA.contains(ElementFactory.object.type));
+    JUnitTestCase.assertEquals(1, superinterfacesOfA.length);
+    Set<InterfaceType> superinterfacesOfB = InterfaceTypeImpl.computeSuperinterfaceSet(elementB.type);
+    JUnitTestCase.assertNotNull(superinterfacesOfB);
+    JUnitTestCase.assertTrue(superinterfacesOfB.contains(ElementFactory.object.type));
+    JUnitTestCase.assertTrue(superinterfacesOfB.contains(elementA.type));
+    JUnitTestCase.assertEquals(2, superinterfacesOfB.length);
+    Set<InterfaceType> superinterfacesOfC = InterfaceTypeImpl.computeSuperinterfaceSet(elementC.type);
+    JUnitTestCase.assertNotNull(superinterfacesOfC);
+    JUnitTestCase.assertTrue(superinterfacesOfC.contains(ElementFactory.object.type));
+    JUnitTestCase.assertTrue(superinterfacesOfC.contains(elementA.type));
+    JUnitTestCase.assertTrue(superinterfacesOfC.contains(elementB.type));
+    JUnitTestCase.assertEquals(3, superinterfacesOfC.length);
+  }
+  void test_creation() {
+    JUnitTestCase.assertNotNull(new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("A"))));
+  }
+  void test_getElement() {
+    ClassElementImpl typeElement = new ClassElementImpl(ASTFactory.identifier2("A"));
+    InterfaceTypeImpl type = new InterfaceTypeImpl.con1(typeElement);
+    JUnitTestCase.assertEquals(typeElement, type.element);
+  }
+  void test_getLeastUpperBound_directInterfaceCase() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement2("B", []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    elementB.interfaces = <InterfaceType> [typeA];
+    elementC.interfaces = <InterfaceType> [typeB];
+    JUnitTestCase.assertEquals(typeB, typeB.getLeastUpperBound(typeC));
+    JUnitTestCase.assertEquals(typeB, typeC.getLeastUpperBound(typeB));
+  }
+  void test_getLeastUpperBound_directSubclassCase() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElementImpl elementC = ElementFactory.classElement("C", elementB.type, []);
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    JUnitTestCase.assertEquals(typeB, typeB.getLeastUpperBound(typeC));
+    JUnitTestCase.assertEquals(typeB, typeC.getLeastUpperBound(typeB));
+  }
+  void test_getLeastUpperBound_functionType() {
+    Type2 interfaceType = ElementFactory.classElement2("A", []).type;
+    FunctionTypeImpl functionType = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
+    JUnitTestCase.assertNull(interfaceType.getLeastUpperBound(functionType));
+  }
+  void test_getLeastUpperBound_mixinCase() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElement elementC = ElementFactory.classElement("C", elementA.type, []);
+    ClassElementImpl elementD = ElementFactory.classElement("D", elementB.type, []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeC = elementC.type;
+    InterfaceType typeD = elementD.type;
+    elementD.mixins = <InterfaceType> [ElementFactory.classElement2("M", []).type, ElementFactory.classElement2("N", []).type, ElementFactory.classElement2("O", []).type, ElementFactory.classElement2("P", []).type];
+    JUnitTestCase.assertEquals(typeA, typeD.getLeastUpperBound(typeC));
+    JUnitTestCase.assertEquals(typeA, typeC.getLeastUpperBound(typeD));
+  }
+  void test_getLeastUpperBound_null() {
+    Type2 interfaceType = ElementFactory.classElement2("A", []).type;
+    JUnitTestCase.assertNull(interfaceType.getLeastUpperBound(null));
+  }
+  void test_getLeastUpperBound_object() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement2("B", []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    Type2 typeObject = typeA.element.supertype;
+    JUnitTestCase.assertNull(((typeObject.element as ClassElement)).supertype);
+    JUnitTestCase.assertEquals(typeObject, typeB.element.supertype);
+    JUnitTestCase.assertEquals(typeObject, typeA.getLeastUpperBound(typeB));
+  }
+  void test_getLeastUpperBound_self() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    InterfaceType typeA = elementA.type;
+    JUnitTestCase.assertEquals(typeA, typeA.getLeastUpperBound(typeA));
+  }
+  void test_getLeastUpperBound_sharedSuperclass1() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElementImpl elementC = ElementFactory.classElement("C", elementA.type, []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    JUnitTestCase.assertEquals(typeA, typeB.getLeastUpperBound(typeC));
+    JUnitTestCase.assertEquals(typeA, typeC.getLeastUpperBound(typeB));
+  }
+  void test_getLeastUpperBound_sharedSuperclass2() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElementImpl elementC = ElementFactory.classElement("C", elementA.type, []);
+    ClassElementImpl elementD = ElementFactory.classElement("D", elementC.type, []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeD = elementD.type;
+    JUnitTestCase.assertEquals(typeA, typeB.getLeastUpperBound(typeD));
+    JUnitTestCase.assertEquals(typeA, typeD.getLeastUpperBound(typeB));
+  }
+  void test_getLeastUpperBound_sharedSuperclass3() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElementImpl elementC = ElementFactory.classElement("C", elementB.type, []);
+    ClassElementImpl elementD = ElementFactory.classElement("D", elementB.type, []);
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    InterfaceType typeD = elementD.type;
+    JUnitTestCase.assertEquals(typeB, typeC.getLeastUpperBound(typeD));
+    JUnitTestCase.assertEquals(typeB, typeD.getLeastUpperBound(typeC));
+  }
+  void test_getLeastUpperBound_sharedSuperclass4() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementA2 = ElementFactory.classElement2("A2", []);
+    ClassElement elementA3 = ElementFactory.classElement2("A3", []);
+    ClassElementImpl elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElementImpl elementC = ElementFactory.classElement("C", elementA.type, []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeA2 = elementA2.type;
+    InterfaceType typeA3 = elementA3.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    elementB.interfaces = <InterfaceType> [typeA2];
+    elementC.interfaces = <InterfaceType> [typeA3];
+    JUnitTestCase.assertEquals(typeA, typeB.getLeastUpperBound(typeC));
+    JUnitTestCase.assertEquals(typeA, typeC.getLeastUpperBound(typeB));
+  }
+  void test_getLeastUpperBound_sharedSuperinterface1() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement2("B", []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    elementB.interfaces = <InterfaceType> [typeA];
+    elementC.interfaces = <InterfaceType> [typeA];
+    JUnitTestCase.assertEquals(typeA, typeB.getLeastUpperBound(typeC));
+    JUnitTestCase.assertEquals(typeA, typeC.getLeastUpperBound(typeB));
+  }
+  void test_getLeastUpperBound_sharedSuperinterface2() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement2("B", []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    ClassElementImpl elementD = ElementFactory.classElement2("D", []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    InterfaceType typeD = elementD.type;
+    elementB.interfaces = <InterfaceType> [typeA];
+    elementC.interfaces = <InterfaceType> [typeA];
+    elementD.interfaces = <InterfaceType> [typeC];
+    JUnitTestCase.assertEquals(typeA, typeB.getLeastUpperBound(typeD));
+    JUnitTestCase.assertEquals(typeA, typeD.getLeastUpperBound(typeB));
+  }
+  void test_getLeastUpperBound_sharedSuperinterface3() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement2("B", []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    ClassElementImpl elementD = ElementFactory.classElement2("D", []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    InterfaceType typeD = elementD.type;
+    elementB.interfaces = <InterfaceType> [typeA];
+    elementC.interfaces = <InterfaceType> [typeB];
+    elementD.interfaces = <InterfaceType> [typeB];
+    JUnitTestCase.assertEquals(typeB, typeC.getLeastUpperBound(typeD));
+    JUnitTestCase.assertEquals(typeB, typeD.getLeastUpperBound(typeC));
+  }
+  void test_getLeastUpperBound_sharedSuperinterface4() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementA2 = ElementFactory.classElement2("A2", []);
+    ClassElement elementA3 = ElementFactory.classElement2("A3", []);
+    ClassElementImpl elementB = ElementFactory.classElement2("B", []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeA2 = elementA2.type;
+    InterfaceType typeA3 = elementA3.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    elementB.interfaces = <InterfaceType> [typeA, typeA2];
+    elementC.interfaces = <InterfaceType> [typeA, typeA3];
+    JUnitTestCase.assertEquals(typeA, typeB.getLeastUpperBound(typeC));
+    JUnitTestCase.assertEquals(typeA, typeC.getLeastUpperBound(typeB));
+  }
+  void test_getTypeArguments() {
+    InterfaceTypeImpl type = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("A")));
+    EngineTestCase.assertLength(0, type.typeArguments);
+  }
+  void test_isDirectSupertypeOf_extends() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    InterfaceTypeImpl typeA = new InterfaceTypeImpl.con1(elementA);
+    InterfaceTypeImpl typeB = new InterfaceTypeImpl.con1(elementB);
+    JUnitTestCase.assertTrue(typeA.isDirectSupertypeOf(typeB));
+  }
+  void test_isDirectSupertypeOf_false() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement2("B", []);
+    ClassElement elementC = ElementFactory.classElement("C", elementB.type, []);
+    InterfaceTypeImpl typeA = new InterfaceTypeImpl.con1(elementA);
+    InterfaceTypeImpl typeC = new InterfaceTypeImpl.con1(elementC);
+    JUnitTestCase.assertFalse(typeA.isDirectSupertypeOf(typeC));
+  }
+  void test_isDirectSupertypeOf_implements() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement2("B", []);
+    elementB.interfaces = <InterfaceType> [elementA.type];
+    InterfaceTypeImpl typeA = new InterfaceTypeImpl.con1(elementA);
+    InterfaceTypeImpl typeB = new InterfaceTypeImpl.con1(elementB);
+    JUnitTestCase.assertTrue(typeA.isDirectSupertypeOf(typeB));
+  }
+  void test_isDirectSupertypeOf_with() {
+    ClassElementImpl elementA = ElementFactory.classElement2("A", []);
+    ClassElementImpl elementB = ElementFactory.classElement2("B", []);
+    elementB.mixins = <InterfaceType> [elementA.type];
+    InterfaceTypeImpl typeA = new InterfaceTypeImpl.con1(elementA);
+    InterfaceTypeImpl typeB = new InterfaceTypeImpl.con1(elementB);
+    JUnitTestCase.assertTrue(typeA.isDirectSupertypeOf(typeB));
+  }
+  void test_isMoreSpecificThan_bottom() {
+    Type2 type24 = ElementFactory.classElement2("A", []).type;
+    JUnitTestCase.assertTrue(BottomTypeImpl.instance.isMoreSpecificThan(type24));
+  }
+  void test_isMoreSpecificThan_covariance() {
+    ClassElement elementA = ElementFactory.classElement2("A", ["E"]);
+    ClassElement elementI = ElementFactory.classElement2("I", []);
+    ClassElement elementJ = ElementFactory.classElement("J", elementI.type, []);
+    InterfaceTypeImpl typeAI = new InterfaceTypeImpl.con1(elementA);
+    InterfaceTypeImpl typeAJ = new InterfaceTypeImpl.con1(elementA);
+    typeAI.typeArguments = <Type2> [elementI.type];
+    typeAJ.typeArguments = <Type2> [elementJ.type];
+    JUnitTestCase.assertTrue(typeAJ.isMoreSpecificThan(typeAI));
+    JUnitTestCase.assertFalse(typeAI.isMoreSpecificThan(typeAJ));
+  }
+  void test_isMoreSpecificThan_directSupertype() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    JUnitTestCase.assertTrue(typeB.isMoreSpecificThan(typeA));
+    JUnitTestCase.assertFalse(typeA.isMoreSpecificThan(typeB));
+  }
+  void test_isMoreSpecificThan_dynamic() {
+    InterfaceType type25 = ElementFactory.classElement2("A", []).type;
+    JUnitTestCase.assertTrue(type25.isMoreSpecificThan(DynamicTypeImpl.instance));
+  }
+  void test_isMoreSpecificThan_indirectSupertype() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElement elementC = ElementFactory.classElement("C", elementB.type, []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeC = elementC.type;
+    JUnitTestCase.assertTrue(typeC.isMoreSpecificThan(typeA));
+  }
+  void test_isMoreSpecificThan_self() {
+    InterfaceType type26 = ElementFactory.classElement2("A", []).type;
+    JUnitTestCase.assertTrue(type26.isMoreSpecificThan(type26));
+  }
+  void test_isSubtypeOf_directSubtype() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    JUnitTestCase.assertTrue(typeB.isSubtypeOf(typeA));
+    JUnitTestCase.assertFalse(typeA.isSubtypeOf(typeB));
+  }
+  void test_isSubtypeOf_dynamic() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    InterfaceType typeA = elementA.type;
+    Type2 dynamicType = DynamicTypeImpl.instance;
+    JUnitTestCase.assertFalse(dynamicType.isSubtypeOf(typeA));
+    JUnitTestCase.assertTrue(typeA.isSubtypeOf(dynamicType));
+  }
+  void test_isSubtypeOf_indirectSubtype() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElement elementC = ElementFactory.classElement("C", elementB.type, []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeC = elementC.type;
+    JUnitTestCase.assertTrue(typeC.isSubtypeOf(typeA));
+    JUnitTestCase.assertFalse(typeA.isSubtypeOf(typeC));
+  }
+  void test_isSubtypeOf_interface() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    InterfaceType typeObject = elementA.supertype;
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    elementC.interfaces = <InterfaceType> [typeB];
+    JUnitTestCase.assertTrue(typeC.isSubtypeOf(typeB));
+    JUnitTestCase.assertTrue(typeC.isSubtypeOf(typeObject));
+    JUnitTestCase.assertTrue(typeC.isSubtypeOf(typeA));
+    JUnitTestCase.assertFalse(typeA.isSubtypeOf(typeC));
+  }
+  void test_isSubtypeOf_mixins() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    InterfaceType typeObject = elementA.supertype;
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    elementC.mixins = <InterfaceType> [typeB];
+    JUnitTestCase.assertTrue(typeC.isSubtypeOf(typeB));
+    JUnitTestCase.assertTrue(typeC.isSubtypeOf(typeObject));
+    JUnitTestCase.assertFalse(typeC.isSubtypeOf(typeA));
+    JUnitTestCase.assertFalse(typeA.isSubtypeOf(typeC));
+  }
+  void test_isSubtypeOf_object() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeObject = elementA.supertype;
+    JUnitTestCase.assertTrue(typeA.isSubtypeOf(typeObject));
+    JUnitTestCase.assertFalse(typeObject.isSubtypeOf(typeA));
+  }
+  void test_isSubtypeOf_self() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    InterfaceType typeA = elementA.type;
+    JUnitTestCase.assertTrue(typeA.isSubtypeOf(typeA));
+  }
+  void test_isSubtypeOf_typeArguments() {
+    ClassElement elementA = ElementFactory.classElement2("A", ["E"]);
+    ClassElement elementI = ElementFactory.classElement2("I", []);
+    ClassElement elementJ = ElementFactory.classElement("J", elementI.type, []);
+    ClassElement elementK = ElementFactory.classElement2("K", []);
+    InterfaceType typeA = elementA.type;
+    InterfaceTypeImpl typeAI = new InterfaceTypeImpl.con1(elementA);
+    InterfaceTypeImpl typeAJ = new InterfaceTypeImpl.con1(elementA);
+    InterfaceTypeImpl typeAK = new InterfaceTypeImpl.con1(elementA);
+    typeAI.typeArguments = <Type2> [elementI.type];
+    typeAJ.typeArguments = <Type2> [elementJ.type];
+    typeAK.typeArguments = <Type2> [elementK.type];
+    JUnitTestCase.assertTrue(typeAJ.isSubtypeOf(typeAI));
+    JUnitTestCase.assertFalse(typeAI.isSubtypeOf(typeAJ));
+    JUnitTestCase.assertTrue(typeAI.isSubtypeOf(typeAI));
+    JUnitTestCase.assertTrue(typeA.isSubtypeOf(typeAI));
+    JUnitTestCase.assertTrue(typeA.isSubtypeOf(typeAJ));
+    JUnitTestCase.assertTrue(typeAI.isSubtypeOf(typeA));
+    JUnitTestCase.assertTrue(typeAJ.isSubtypeOf(typeA));
+    JUnitTestCase.assertFalse(typeAI.isSubtypeOf(typeAK));
+    JUnitTestCase.assertFalse(typeAK.isSubtypeOf(typeAI));
+  }
+  void test_isSupertypeOf_directSupertype() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    JUnitTestCase.assertFalse(typeB.isSupertypeOf(typeA));
+    JUnitTestCase.assertTrue(typeA.isSupertypeOf(typeB));
+  }
+  void test_isSupertypeOf_dynamic() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    InterfaceType typeA = elementA.type;
+    Type2 dynamicType = DynamicTypeImpl.instance;
+    JUnitTestCase.assertTrue(dynamicType.isSupertypeOf(typeA));
+    JUnitTestCase.assertFalse(typeA.isSupertypeOf(dynamicType));
+  }
+  void test_isSupertypeOf_indirectSupertype() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElement elementC = ElementFactory.classElement("C", elementB.type, []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeC = elementC.type;
+    JUnitTestCase.assertFalse(typeC.isSupertypeOf(typeA));
+    JUnitTestCase.assertTrue(typeA.isSupertypeOf(typeC));
+  }
+  void test_isSupertypeOf_interface() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    InterfaceType typeObject = elementA.supertype;
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    elementC.interfaces = <InterfaceType> [typeB];
+    JUnitTestCase.assertTrue(typeB.isSupertypeOf(typeC));
+    JUnitTestCase.assertTrue(typeObject.isSupertypeOf(typeC));
+    JUnitTestCase.assertTrue(typeA.isSupertypeOf(typeC));
+    JUnitTestCase.assertFalse(typeC.isSupertypeOf(typeA));
+  }
+  void test_isSupertypeOf_mixins() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    InterfaceType typeObject = elementA.supertype;
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    elementC.mixins = <InterfaceType> [typeB];
+    JUnitTestCase.assertTrue(typeB.isSupertypeOf(typeC));
+    JUnitTestCase.assertTrue(typeObject.isSupertypeOf(typeC));
+    JUnitTestCase.assertFalse(typeA.isSupertypeOf(typeC));
+    JUnitTestCase.assertFalse(typeC.isSupertypeOf(typeA));
+  }
+  void test_isSupertypeOf_object() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeObject = elementA.supertype;
+    JUnitTestCase.assertFalse(typeA.isSupertypeOf(typeObject));
+    JUnitTestCase.assertTrue(typeObject.isSupertypeOf(typeA));
+  }
+  void test_isSupertypeOf_self() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    InterfaceType typeA = elementA.type;
+    JUnitTestCase.assertTrue(typeA.isSupertypeOf(typeA));
+  }
+  void test_setTypeArguments() {
+    InterfaceTypeImpl type27 = ElementFactory.classElement2("A", []).type as InterfaceTypeImpl;
+    List<Type2> typeArguments = <Type2> [new InterfaceTypeImpl.con1(ElementFactory.classElement2("B", [])), new InterfaceTypeImpl.con1(ElementFactory.classElement2("C", []))];
+    type27.typeArguments = typeArguments;
+    JUnitTestCase.assertEquals(typeArguments, type27.typeArguments);
+  }
+  void test_substitute_equal() {
+    ClassElementImpl classElement = new ClassElementImpl(ASTFactory.identifier2("A"));
+    TypeVariableElementImpl parameterElement = new TypeVariableElementImpl(ASTFactory.identifier2("E"));
+    InterfaceTypeImpl type = new InterfaceTypeImpl.con1(classElement);
+    TypeVariableTypeImpl parameter = new TypeVariableTypeImpl(parameterElement);
+    type.typeArguments = <Type2> [parameter];
+    InterfaceTypeImpl argumentType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("B")));
+    InterfaceType result = type.substitute2(<Type2> [argumentType], <Type2> [parameter]);
+    JUnitTestCase.assertEquals(classElement, result.element);
+    List<Type2> resultArguments = result.typeArguments;
+    EngineTestCase.assertLength(1, resultArguments);
+    JUnitTestCase.assertEquals(argumentType, resultArguments[0]);
+  }
+  void test_substitute_notEqual() {
+    ClassElementImpl classElement = new ClassElementImpl(ASTFactory.identifier2("A"));
+    TypeVariableElementImpl parameterElement = new TypeVariableElementImpl(ASTFactory.identifier2("E"));
+    InterfaceTypeImpl type = new InterfaceTypeImpl.con1(classElement);
+    TypeVariableTypeImpl parameter = new TypeVariableTypeImpl(parameterElement);
+    type.typeArguments = <Type2> [parameter];
+    InterfaceTypeImpl argumentType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("B")));
+    TypeVariableTypeImpl parameterType = new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("F")));
+    InterfaceType result = type.substitute2(<Type2> [argumentType], <Type2> [parameterType]);
+    JUnitTestCase.assertEquals(classElement, result.element);
+    List<Type2> resultArguments = result.typeArguments;
+    EngineTestCase.assertLength(1, resultArguments);
+    JUnitTestCase.assertEquals(parameter, resultArguments[0]);
+  }
+  static dartSuite() {
+    _ut.group('InterfaceTypeImplTest', () {
+      _ut.test('test_computeLongestInheritancePathToObject_multipleInterfacePaths', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_computeLongestInheritancePathToObject_multipleInterfacePaths);
+      });
+      _ut.test('test_computeLongestInheritancePathToObject_multipleSuperclassPaths', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_computeLongestInheritancePathToObject_multipleSuperclassPaths);
+      });
+      _ut.test('test_computeLongestInheritancePathToObject_object', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_computeLongestInheritancePathToObject_object);
+      });
+      _ut.test('test_computeLongestInheritancePathToObject_singleInterfacePath', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_computeLongestInheritancePathToObject_singleInterfacePath);
+      });
+      _ut.test('test_computeLongestInheritancePathToObject_singleSuperclassPath', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_computeLongestInheritancePathToObject_singleSuperclassPath);
+      });
+      _ut.test('test_computeSuperinterfaceSet_multipleInterfacePaths', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_computeSuperinterfaceSet_multipleInterfacePaths);
+      });
+      _ut.test('test_computeSuperinterfaceSet_multipleSuperclassPaths', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_computeSuperinterfaceSet_multipleSuperclassPaths);
+      });
+      _ut.test('test_computeSuperinterfaceSet_singleInterfacePath', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_computeSuperinterfaceSet_singleInterfacePath);
+      });
+      _ut.test('test_computeSuperinterfaceSet_singleSuperclassPath', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_computeSuperinterfaceSet_singleSuperclassPath);
+      });
+      _ut.test('test_creation', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_creation);
+      });
+      _ut.test('test_getElement', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getElement);
+      });
+      _ut.test('test_getLeastUpperBound_directInterfaceCase', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_directInterfaceCase);
+      });
+      _ut.test('test_getLeastUpperBound_directSubclassCase', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_directSubclassCase);
+      });
+      _ut.test('test_getLeastUpperBound_functionType', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_functionType);
+      });
+      _ut.test('test_getLeastUpperBound_mixinCase', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_mixinCase);
+      });
+      _ut.test('test_getLeastUpperBound_null', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_null);
+      });
+      _ut.test('test_getLeastUpperBound_object', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_object);
+      });
+      _ut.test('test_getLeastUpperBound_self', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_self);
+      });
+      _ut.test('test_getLeastUpperBound_sharedSuperclass1', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperclass1);
+      });
+      _ut.test('test_getLeastUpperBound_sharedSuperclass2', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperclass2);
+      });
+      _ut.test('test_getLeastUpperBound_sharedSuperclass3', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperclass3);
+      });
+      _ut.test('test_getLeastUpperBound_sharedSuperclass4', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperclass4);
+      });
+      _ut.test('test_getLeastUpperBound_sharedSuperinterface1', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperinterface1);
+      });
+      _ut.test('test_getLeastUpperBound_sharedSuperinterface2', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperinterface2);
+      });
+      _ut.test('test_getLeastUpperBound_sharedSuperinterface3', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperinterface3);
+      });
+      _ut.test('test_getLeastUpperBound_sharedSuperinterface4', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperinterface4);
+      });
+      _ut.test('test_getTypeArguments', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_getTypeArguments);
+      });
+      _ut.test('test_isDirectSupertypeOf_extends', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isDirectSupertypeOf_extends);
+      });
+      _ut.test('test_isDirectSupertypeOf_false', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isDirectSupertypeOf_false);
+      });
+      _ut.test('test_isDirectSupertypeOf_implements', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isDirectSupertypeOf_implements);
+      });
+      _ut.test('test_isDirectSupertypeOf_with', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isDirectSupertypeOf_with);
+      });
+      _ut.test('test_isMoreSpecificThan_bottom', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isMoreSpecificThan_bottom);
+      });
+      _ut.test('test_isMoreSpecificThan_covariance', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isMoreSpecificThan_covariance);
+      });
+      _ut.test('test_isMoreSpecificThan_directSupertype', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isMoreSpecificThan_directSupertype);
+      });
+      _ut.test('test_isMoreSpecificThan_dynamic', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isMoreSpecificThan_dynamic);
+      });
+      _ut.test('test_isMoreSpecificThan_indirectSupertype', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isMoreSpecificThan_indirectSupertype);
+      });
+      _ut.test('test_isMoreSpecificThan_self', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isMoreSpecificThan_self);
+      });
+      _ut.test('test_isSubtypeOf_directSubtype', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_directSubtype);
+      });
+      _ut.test('test_isSubtypeOf_dynamic', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_dynamic);
+      });
+      _ut.test('test_isSubtypeOf_indirectSubtype', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_indirectSubtype);
+      });
+      _ut.test('test_isSubtypeOf_interface', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_interface);
+      });
+      _ut.test('test_isSubtypeOf_mixins', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_mixins);
+      });
+      _ut.test('test_isSubtypeOf_object', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_object);
+      });
+      _ut.test('test_isSubtypeOf_self', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_self);
+      });
+      _ut.test('test_isSubtypeOf_typeArguments', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_typeArguments);
+      });
+      _ut.test('test_isSupertypeOf_directSupertype', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSupertypeOf_directSupertype);
+      });
+      _ut.test('test_isSupertypeOf_dynamic', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSupertypeOf_dynamic);
+      });
+      _ut.test('test_isSupertypeOf_indirectSupertype', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSupertypeOf_indirectSupertype);
+      });
+      _ut.test('test_isSupertypeOf_interface', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSupertypeOf_interface);
+      });
+      _ut.test('test_isSupertypeOf_mixins', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSupertypeOf_mixins);
+      });
+      _ut.test('test_isSupertypeOf_object', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSupertypeOf_object);
+      });
+      _ut.test('test_isSupertypeOf_self', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_isSupertypeOf_self);
+      });
+      _ut.test('test_setTypeArguments', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_setTypeArguments);
+      });
+      _ut.test('test_substitute_equal', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_substitute_equal);
+      });
+      _ut.test('test_substitute_notEqual', () {
+        final __test = new InterfaceTypeImplTest();
+        runJUnitTest(__test, __test.test_substitute_notEqual);
+      });
+    });
+  }
+}
+class TypeVariableTypeImplTest extends EngineTestCase {
+  void test_creation() {
+    JUnitTestCase.assertNotNull(new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("E"))));
+  }
+  void test_getElement() {
+    TypeVariableElementImpl element = new TypeVariableElementImpl(ASTFactory.identifier2("E"));
+    TypeVariableTypeImpl type = new TypeVariableTypeImpl(element);
+    JUnitTestCase.assertEquals(element, type.element);
+  }
+  void test_substitute_equal() {
+    TypeVariableElementImpl element = new TypeVariableElementImpl(ASTFactory.identifier2("E"));
+    TypeVariableTypeImpl type = new TypeVariableTypeImpl(element);
+    InterfaceTypeImpl argument = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("A")));
+    TypeVariableTypeImpl parameter = new TypeVariableTypeImpl(element);
+    JUnitTestCase.assertSame(argument, type.substitute2(<Type2> [argument], <Type2> [parameter]));
+  }
+  void test_substitute_notEqual() {
+    TypeVariableTypeImpl type = new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("E")));
+    InterfaceTypeImpl argument = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("A")));
+    TypeVariableTypeImpl parameter = new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("F")));
+    JUnitTestCase.assertSame(type, type.substitute2(<Type2> [argument], <Type2> [parameter]));
+  }
+  static dartSuite() {
+    _ut.group('TypeVariableTypeImplTest', () {
+      _ut.test('test_creation', () {
+        final __test = new TypeVariableTypeImplTest();
+        runJUnitTest(__test, __test.test_creation);
+      });
+      _ut.test('test_getElement', () {
+        final __test = new TypeVariableTypeImplTest();
+        runJUnitTest(__test, __test.test_getElement);
+      });
+      _ut.test('test_substitute_equal', () {
+        final __test = new TypeVariableTypeImplTest();
+        runJUnitTest(__test, __test.test_substitute_equal);
+      });
+      _ut.test('test_substitute_notEqual', () {
+        final __test = new TypeVariableTypeImplTest();
+        runJUnitTest(__test, __test.test_substitute_notEqual);
+      });
+    });
+  }
+}
 /**
  * The class {@code ElementFactory} defines utility methods used to create elements for testing
- * purposes.
+ * purposes. The elements that are created are complete in the sense that as much of the element
+ * model as can be created, given the provided information, has been created.
  */
 class ElementFactory {
   /**
    * The element representing the class 'Object'.
    */
-  static ClassElement _objectElement;
-  static ClassElement classElement(String typeName, InterfaceType superclassType, List<String> parameterNames) {
+  static ClassElementImpl _objectElement;
+  static ClassElementImpl classElement(String typeName, InterfaceType superclassType, List<String> parameterNames) {
     ClassElementImpl element = new ClassElementImpl(ASTFactory.identifier2(typeName));
     element.supertype = superclassType;
     InterfaceTypeImpl type = new InterfaceTypeImpl.con1(element);
     element.type = type;
     int count = parameterNames.length;
     if (count > 0) {
       List<TypeVariableElementImpl> typeVariables = new List<TypeVariableElementImpl>(count);
       List<TypeVariableTypeImpl> typeArguments = new List<TypeVariableTypeImpl>(count);
       for (int i = 0; i < count; i++) {
         TypeVariableElementImpl variable = new TypeVariableElementImpl(ASTFactory.identifier2(parameterNames[i]));
         typeVariables[i] = variable;
         typeArguments[i] = new TypeVariableTypeImpl(variable);
         variable.type = typeArguments[i];
       }
       element.typeVariables = typeVariables;
       type.typeArguments = typeArguments;
     }
     return element;
   }
-  static ClassElement classElement2(String typeName, List<String> parameterNames) => classElement(typeName, object.type, parameterNames);
-  static ConstructorElement constructorElement(String name) => new ConstructorElementImpl(name == null ? null : ASTFactory.identifier2(name));
-  static FieldElement fieldElement(String name, bool isStatic, bool isFinal, bool isConst, Type2 type27) {
+  static ClassElementImpl classElement2(String typeName, List<String> parameterNames) => classElement(typeName, object.type, parameterNames);
+  static ConstructorElementImpl constructorElement(String name) => new ConstructorElementImpl(name == null ? null : ASTFactory.identifier2(name));
+  static ExportElementImpl exportFor(LibraryElement exportedLibrary4, List<NamespaceCombinator> combinators4) {
+    ExportElementImpl spec = new ExportElementImpl();
+    spec.exportedLibrary = exportedLibrary4;
+    spec.combinators = combinators4;
+    return spec;
+  }
+  static FieldElementImpl fieldElement(String name, bool isStatic, bool isFinal, bool isConst, Type2 type32) {
     FieldElementImpl field = new FieldElementImpl.con1(ASTFactory.identifier2(name));
     field.const2 = isConst;
     field.final2 = isFinal;
     field.static = isStatic;
-    field.type = type27;
-    PropertyAccessorElementImpl getter = new PropertyAccessorElementImpl.con1(field);
+    field.type = type32;
+    PropertyAccessorElementImpl getter = new PropertyAccessorElementImpl.con2(field);
     getter.getter = true;
     getter.synthetic = true;
     field.getter = getter;
     FunctionTypeImpl getterType = new FunctionTypeImpl.con1(getter);
-    getterType.returnType = type27;
+    getterType.returnType = type32;
     getter.type = getterType;
     if (!isConst && !isFinal) {
-      PropertyAccessorElementImpl setter = new PropertyAccessorElementImpl.con1(field);
+      PropertyAccessorElementImpl setter = new PropertyAccessorElementImpl.con2(field);
       setter.setter = true;
       setter.synthetic = true;
       field.setter = setter;
       FunctionTypeImpl setterType = new FunctionTypeImpl.con1(getter);
-      setterType.normalParameterTypes = <Type2> [type27];
+      setterType.normalParameterTypes = <Type2> [type32];
       setterType.returnType = VoidTypeImpl.instance;
       setter.type = setterType;
     }
     return field;
   }
-  static FunctionElement functionElement(String functionName) => functionElement4(functionName, null, null, null, null);
-  static FunctionElement functionElement2(String functionName, ClassElement returnElement) => functionElement3(functionName, returnElement, null, null);
-  static FunctionElement functionElement3(String functionName, ClassElement returnElement, List<ClassElement> normalParameters, List<ClassElement> optionalParameters) {
+  static FunctionElementImpl functionElement(String functionName) => functionElement4(functionName, null, null, null, null);
+  static FunctionElementImpl functionElement2(String functionName, ClassElement returnElement) => functionElement3(functionName, returnElement, null, null);
+  static FunctionElementImpl functionElement3(String functionName, ClassElement returnElement, List<ClassElement> normalParameters, List<ClassElement> optionalParameters) {
     FunctionElementImpl functionElement = new FunctionElementImpl.con1(ASTFactory.identifier2(functionName));
     FunctionTypeImpl functionType = new FunctionTypeImpl.con1(functionElement);
     functionElement.type = functionType;
     if (returnElement != null) {
       functionType.returnType = returnElement.type;
     }
     int count = normalParameters == null ? 0 : normalParameters.length;
     if (count > 0) {
       List<InterfaceType> normalParameterTypes = new List<InterfaceType>(count);
       for (int i = 0; i < count; i++) {
         normalParameterTypes[i] = normalParameters[i].type;
       }
       functionType.normalParameterTypes = normalParameterTypes;
     }
     count = optionalParameters == null ? 0 : optionalParameters.length;
     if (count > 0) {
       List<InterfaceType> optionalParameterTypes = new List<InterfaceType>(count);
       for (int i = 0; i < count; i++) {
         optionalParameterTypes[i] = optionalParameters[i].type;
       }
       functionType.optionalParameterTypes = optionalParameterTypes;
     }
     return functionElement;
   }
-  static FunctionElement functionElement4(String functionName, ClassElement returnElement, List<ClassElement> normalParameters, List<String> names, List<ClassElement> namedParameters) {
+  static FunctionElementImpl functionElement4(String functionName, ClassElement returnElement, List<ClassElement> normalParameters, List<String> names, List<ClassElement> namedParameters) {
     FunctionElementImpl functionElement = new FunctionElementImpl.con1(ASTFactory.identifier2(functionName));
     FunctionTypeImpl functionType = new FunctionTypeImpl.con1(functionElement);
     functionElement.type = functionType;
     if (returnElement != null) {
       functionType.returnType = returnElement.type;
     }
     int count = normalParameters == null ? 0 : normalParameters.length;
     if (count > 0) {
       List<InterfaceType> normalParameterTypes = new List<InterfaceType>(count);
       for (int i = 0; i < count; i++) {
         normalParameterTypes[i] = normalParameters[i].type;
       }
       functionType.normalParameterTypes = normalParameterTypes;
     }
     if (names != null && names.length > 0 && names.length == namedParameters.length) {
       LinkedHashMap<String, Type2> map = new LinkedHashMap<String, Type2>();
       for (int i = 0; i < names.length; i++) {
         map[names[i]] = namedParameters[i].type;
       }
       functionType.namedParameterTypes = map;
     } else if (names != null) {
       throw new IllegalStateException("The passed String[] and ClassElement[] arrays had different lengths.");
     }
     return functionElement;
   }
-  static FunctionElement functionElement5(String functionName, List<ClassElement> normalParameters) => functionElement3(functionName, null, normalParameters, null);
-  static FunctionElement functionElement6(String functionName, List<ClassElement> normalParameters, List<ClassElement> optionalParameters) => functionElement3(functionName, null, normalParameters, optionalParameters);
-  static FunctionElement functionElement7(String functionName, List<ClassElement> normalParameters, List<String> names, List<ClassElement> namedParameters) => functionElement4(functionName, null, normalParameters, names, namedParameters);
-  static ClassElement get object {
+  static FunctionElementImpl functionElement5(String functionName, List<ClassElement> normalParameters) => functionElement3(functionName, null, normalParameters, null);
+  static FunctionElementImpl functionElement6(String functionName, List<ClassElement> normalParameters, List<ClassElement> optionalParameters) => functionElement3(functionName, null, normalParameters, optionalParameters);
+  static FunctionElementImpl functionElement7(String functionName, List<ClassElement> normalParameters, List<String> names, List<ClassElement> namedParameters) => functionElement4(functionName, null, normalParameters, names, namedParameters);
+  static ClassElementImpl get object {
     if (_objectElement == null) {
       _objectElement = classElement("Object", (null as InterfaceType), []);
     }
     return _objectElement;
   }
-  static PropertyAccessorElement getterElement(String name, bool isStatic, Type2 type28) {
+  static PropertyAccessorElementImpl getterElement(String name, bool isStatic, Type2 type33) {
     FieldElementImpl field = new FieldElementImpl.con1(ASTFactory.identifier2(name));
     field.static = isStatic;
     field.synthetic = true;
-    field.type = type28;
-    PropertyAccessorElementImpl getter = new PropertyAccessorElementImpl.con1(field);
+    field.type = type33;
+    PropertyAccessorElementImpl getter = new PropertyAccessorElementImpl.con2(field);
     getter.getter = true;
     field.getter = getter;
     FunctionTypeImpl getterType = new FunctionTypeImpl.con1(getter);
-    getterType.returnType = type28;
+    getterType.returnType = type33;
     getter.type = getterType;
     return getter;
   }
-  static ImportElementImpl importFor(LibraryElement importedLibrary4, PrefixElement prefix12, List<NamespaceCombinator> combinators4) {
+  static ImportElementImpl importFor(LibraryElement importedLibrary5, PrefixElement prefix13, List<NamespaceCombinator> combinators5) {
     ImportElementImpl spec = new ImportElementImpl();
-    spec.importedLibrary = importedLibrary4;
-    spec.prefix = prefix12;
-    spec.combinators = combinators4;
+    spec.importedLibrary = importedLibrary5;
+    spec.prefix = prefix13;
+    spec.combinators = combinators5;
     return spec;
   }
   static LibraryElementImpl library(AnalysisContext context, String libraryName) {
     String fileName = "${libraryName}.dart";
-    FileBasedSource source = new FileBasedSource.con1(null, createFile(fileName));
+    FileBasedSource source = new FileBasedSource.con1(null, FileUtilities2.createFile(fileName));
     CompilationUnitElementImpl unit = new CompilationUnitElementImpl(fileName);
     unit.source = source;
     LibraryElementImpl library = new LibraryElementImpl(context, ASTFactory.libraryIdentifier2([libraryName]));
     library.definingCompilationUnit = unit;
     return library;
   }
-  static MethodElement methodElement(String methodName, Type2 returnType9, List<Type2> argumentTypes) {
+  static LocalVariableElementImpl localVariableElement(Identifier name) => new LocalVariableElementImpl(name);
+  static LocalVariableElementImpl localVariableElement2(String name) => new LocalVariableElementImpl(ASTFactory.identifier2(name));
+  static MethodElementImpl methodElement(String methodName, Type2 returnType11, List<Type2> argumentTypes) {
     MethodElementImpl method = new MethodElementImpl.con1(ASTFactory.identifier2(methodName));
     int count = argumentTypes.length;
     List<ParameterElement> parameters = new List<ParameterElement>(count);
     for (int i = 0; i < count; i++) {
       ParameterElementImpl parameter = new ParameterElementImpl(ASTFactory.identifier2("a${i}"));
       parameter.type = argumentTypes[i];
       parameters[i] = parameter;
     }
     method.parameters = parameters;
     FunctionTypeImpl methodType = new FunctionTypeImpl.con1(method);
     methodType.normalParameterTypes = argumentTypes;
-    methodType.returnType = returnType9;
+    methodType.returnType = returnType11;
     method.type = methodType;
     return method;
   }
-  static PropertyAccessorElement setterElement(String name, bool isStatic, Type2 type29) {
+  static ParameterElementImpl namedParameter(String name) {
+    ParameterElementImpl parameter = new ParameterElementImpl(ASTFactory.identifier2(name));
+    parameter.parameterKind = ParameterKind.NAMED;
+    return parameter;
+  }
+  static ParameterElementImpl positionalParameter(String name) {
+    ParameterElementImpl parameter = new ParameterElementImpl(ASTFactory.identifier2(name));
+    parameter.parameterKind = ParameterKind.POSITIONAL;
+    return parameter;
+  }
+  static PrefixElementImpl prefix(String name) => new PrefixElementImpl(ASTFactory.identifier2(name));
+  static ParameterElementImpl requiredParameter(String name) {
+    ParameterElementImpl parameter = new ParameterElementImpl(ASTFactory.identifier2(name));
+    parameter.parameterKind = ParameterKind.REQUIRED;
+    return parameter;
+  }
+  static PropertyAccessorElementImpl setterElement(String name, bool isStatic, Type2 type34) {
     FieldElementImpl field = new FieldElementImpl.con1(ASTFactory.identifier2(name));
     field.static = isStatic;
     field.synthetic = true;
-    field.type = type29;
-    PropertyAccessorElementImpl getter = new PropertyAccessorElementImpl.con1(field);
+    field.type = type34;
+    PropertyAccessorElementImpl getter = new PropertyAccessorElementImpl.con2(field);
     getter.getter = true;
     field.getter = getter;
     FunctionTypeImpl getterType = new FunctionTypeImpl.con1(getter);
-    getterType.returnType = type29;
+    getterType.returnType = type34;
     getter.type = getterType;
-    PropertyAccessorElementImpl setter = new PropertyAccessorElementImpl.con1(field);
+    PropertyAccessorElementImpl setter = new PropertyAccessorElementImpl.con2(field);
     setter.setter = true;
     setter.synthetic = true;
     field.setter = setter;
     FunctionTypeImpl setterType = new FunctionTypeImpl.con1(getter);
-    setterType.normalParameterTypes = <Type2> [type29];
+    setterType.normalParameterTypes = <Type2> [type34];
     setterType.returnType = VoidTypeImpl.instance;
     setter.type = setterType;
     return setter;
   }
-  static VariableElement variableElement(String name) => new VariableElementImpl.con2(name, -1);
+  static TopLevelVariableElementImpl topLevelVariableElement(Identifier name) => new TopLevelVariableElementImpl.con1(name);
+  static TopLevelVariableElementImpl topLevelVariableElement2(String name) => new TopLevelVariableElementImpl.con2(name);
   /**
    * Prevent the creation of instances of this class.
    */
   ElementFactory() {
   }
 }
+class ClassElementImplTest extends EngineTestCase {
+  void test_allSupertypes_interface() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    InterfaceType typeObject = elementA.supertype;
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    elementC.interfaces = <InterfaceType> [typeB];
+    List<InterfaceType> supers = elementC.allSupertypes;
+    List<InterfaceType> types = new List<InterfaceType>();
+    types.addAll(supers);
+    JUnitTestCase.assertTrue(types.contains(typeA));
+    JUnitTestCase.assertTrue(types.contains(typeB));
+    JUnitTestCase.assertTrue(types.contains(typeObject));
+    JUnitTestCase.assertFalse(types.contains(typeC));
+  }
+  void test_allSupertypes_mixins() {
+    ClassElement elementA = ElementFactory.classElement2("A", []);
+    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
+    ClassElementImpl elementC = ElementFactory.classElement2("C", []);
+    InterfaceType typeObject = elementA.supertype;
+    InterfaceType typeA = elementA.type;
+    InterfaceType typeB = elementB.type;
+    InterfaceType typeC = elementC.type;
+    elementC.mixins = <InterfaceType> [typeB];
+    List<InterfaceType> supers = elementC.allSupertypes;
+    List<InterfaceType> types = new List<InterfaceType>();
+    types.addAll(supers);
+    JUnitTestCase.assertFalse(types.contains(typeA));
+    JUnitTestCase.assertTrue(types.contains(typeB));
+    JUnitTestCase.assertTrue(types.contains(typeObject));
+    JUnitTestCase.assertFalse(types.contains(typeC));
+  }
+  void test_lookUpGetter_declared() {
+    LibraryElementImpl library6 = ElementFactory.library(new AnalysisContextImpl(), "lib");
+    ClassElementImpl classA = ElementFactory.classElement2("A", []);
+    String getterName = "g";
+    PropertyAccessorElement getter = ElementFactory.getterElement(getterName, false, null);
+    classA.accessors = <PropertyAccessorElement> [getter];
+    ((library6.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA];
+    JUnitTestCase.assertSame(getter, classA.lookUpGetter(getterName, library6));
+  }
+  void test_lookUpGetter_inherited() {
+    LibraryElementImpl library7 = ElementFactory.library(new AnalysisContextImpl(), "lib");
+    ClassElementImpl classA = ElementFactory.classElement2("A", []);
+    String getterName = "g";
+    PropertyAccessorElement getter = ElementFactory.getterElement(getterName, false, null);
+    classA.accessors = <PropertyAccessorElement> [getter];
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type, []);
+    ((library7.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA, classB];
+    JUnitTestCase.assertSame(getter, classB.lookUpGetter(getterName, library7));
+  }
+  void test_lookUpGetter_undeclared() {
+    LibraryElementImpl library8 = ElementFactory.library(new AnalysisContextImpl(), "lib");
+    ClassElementImpl classA = ElementFactory.classElement2("A", []);
+    ((library8.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA];
+    JUnitTestCase.assertNull(classA.lookUpGetter("g", library8));
+  }
+  void test_lookUpMethod_declared() {
+    LibraryElementImpl library9 = ElementFactory.library(new AnalysisContextImpl(), "lib");
+    ClassElementImpl classA = ElementFactory.classElement2("A", []);
+    String methodName = "m";
+    MethodElement method = ElementFactory.methodElement(methodName, null, []);
+    classA.methods = <MethodElement> [method];
+    ((library9.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA];
+    JUnitTestCase.assertSame(method, classA.lookUpMethod(methodName, library9));
+  }
+  void test_lookUpMethod_inherited() {
+    LibraryElementImpl library10 = ElementFactory.library(new AnalysisContextImpl(), "lib");
+    ClassElementImpl classA = ElementFactory.classElement2("A", []);
+    String methodName = "m";
+    MethodElement method = ElementFactory.methodElement(methodName, null, []);
+    classA.methods = <MethodElement> [method];
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type, []);
+    ((library10.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA, classB];
+    JUnitTestCase.assertSame(method, classB.lookUpMethod(methodName, library10));
+  }
+  void test_lookUpMethod_undeclared() {
+    LibraryElementImpl library11 = ElementFactory.library(new AnalysisContextImpl(), "lib");
+    ClassElementImpl classA = ElementFactory.classElement2("A", []);
+    ((library11.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA];
+    JUnitTestCase.assertNull(classA.lookUpMethod("m", library11));
+  }
+  void test_lookUpSetter_declared() {
+    LibraryElementImpl library12 = ElementFactory.library(new AnalysisContextImpl(), "lib");
+    ClassElementImpl classA = ElementFactory.classElement2("A", []);
+    String setterName = "s";
+    PropertyAccessorElement setter = ElementFactory.setterElement(setterName, false, null);
+    classA.accessors = <PropertyAccessorElement> [setter];
+    ((library12.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA];
+    JUnitTestCase.assertSame(setter, classA.lookUpSetter(setterName, library12));
+  }
+  void test_lookUpSetter_inherited() {
+    LibraryElementImpl library13 = ElementFactory.library(new AnalysisContextImpl(), "lib");
+    ClassElementImpl classA = ElementFactory.classElement2("A", []);
+    String setterName = "s";
+    PropertyAccessorElement setter = ElementFactory.setterElement(setterName, false, null);
+    classA.accessors = <PropertyAccessorElement> [setter];
+    ClassElementImpl classB = ElementFactory.classElement("B", classA.type, []);
+    ((library13.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA, classB];
+    JUnitTestCase.assertSame(setter, classB.lookUpSetter(setterName, library13));
+  }
+  void test_lookUpSetter_undeclared() {
+    LibraryElementImpl library14 = ElementFactory.library(new AnalysisContextImpl(), "lib");
+    ClassElementImpl classA = ElementFactory.classElement2("A", []);
+    ((library14.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA];
+    JUnitTestCase.assertNull(classA.lookUpSetter("s", library14));
+  }
+  static dartSuite() {
+    _ut.group('ClassElementImplTest', () {
+      _ut.test('test_allSupertypes_interface', () {
+        final __test = new ClassElementImplTest();
+        runJUnitTest(__test, __test.test_allSupertypes_interface);
+      });
+      _ut.test('test_allSupertypes_mixins', () {
+        final __test = new ClassElementImplTest();
+        runJUnitTest(__test, __test.test_allSupertypes_mixins);
+      });
+      _ut.test('test_lookUpGetter_declared', () {
+        final __test = new ClassElementImplTest();
+        runJUnitTest(__test, __test.test_lookUpGetter_declared);
+      });
+      _ut.test('test_lookUpGetter_inherited', () {
+        final __test = new ClassElementImplTest();
+        runJUnitTest(__test, __test.test_lookUpGetter_inherited);
+      });
+      _ut.test('test_lookUpGetter_undeclared', () {
+        final __test = new ClassElementImplTest();
+        runJUnitTest(__test, __test.test_lookUpGetter_undeclared);
+      });
+      _ut.test('test_lookUpMethod_declared', () {
+        final __test = new ClassElementImplTest();
+        runJUnitTest(__test, __test.test_lookUpMethod_declared);
+      });
+      _ut.test('test_lookUpMethod_inherited', () {
+        final __test = new ClassElementImplTest();
+        runJUnitTest(__test, __test.test_lookUpMethod_inherited);
+      });
+      _ut.test('test_lookUpMethod_undeclared', () {
+        final __test = new ClassElementImplTest();
+        runJUnitTest(__test, __test.test_lookUpMethod_undeclared);
+      });
+      _ut.test('test_lookUpSetter_declared', () {
+        final __test = new ClassElementImplTest();
+        runJUnitTest(__test, __test.test_lookUpSetter_declared);
+      });
+      _ut.test('test_lookUpSetter_inherited', () {
+        final __test = new ClassElementImplTest();
+        runJUnitTest(__test, __test.test_lookUpSetter_inherited);
+      });
+      _ut.test('test_lookUpSetter_undeclared', () {
+        final __test = new ClassElementImplTest();
+        runJUnitTest(__test, __test.test_lookUpSetter_undeclared);
+      });
+    });
+  }
+}
 class ElementImplTest extends EngineTestCase {
+  void test_equals() {
+    LibraryElementImpl library15 = ElementFactory.library(new AnalysisContextImpl(), "lib");
+    ClassElementImpl classElement = ElementFactory.classElement2("C", []);
+    ((library15.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classElement];
+    FieldElement field = ElementFactory.fieldElement("next", false, false, false, classElement.type);
+    classElement.fields = <FieldElement> [field];
+    JUnitTestCase.assertTrue(field == field);
+    JUnitTestCase.assertFalse(field == field.getter);
+    JUnitTestCase.assertFalse(field == field.setter);
+    JUnitTestCase.assertFalse(field.getter == field.setter);
+  }
   void test_isAccessibleIn_private_differentLibrary() {
     AnalysisContextImpl context = new AnalysisContextImpl();
     LibraryElementImpl library1 = ElementFactory.library(context, "lib1");
     ClassElement classElement = ElementFactory.classElement2("_C", []);
     ((library1.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classElement];
     LibraryElementImpl library2 = ElementFactory.library(context, "lib2");
     JUnitTestCase.assertFalse(classElement.isAccessibleIn(library2));
   }
   void test_isAccessibleIn_private_sameLibrary() {
-    LibraryElementImpl library15 = ElementFactory.library(new AnalysisContextImpl(), "lib");
+    LibraryElementImpl library16 = ElementFactory.library(new AnalysisContextImpl(), "lib");
     ClassElement classElement = ElementFactory.classElement2("_C", []);
-    ((library15.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classElement];
-    JUnitTestCase.assertTrue(classElement.isAccessibleIn(library15));
+    ((library16.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classElement];
+    JUnitTestCase.assertTrue(classElement.isAccessibleIn(library16));
   }
   void test_isAccessibleIn_public_differentLibrary() {
     AnalysisContextImpl context = new AnalysisContextImpl();
     LibraryElementImpl library1 = ElementFactory.library(context, "lib1");
     ClassElement classElement = ElementFactory.classElement2("C", []);
     ((library1.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classElement];
     LibraryElementImpl library2 = ElementFactory.library(context, "lib2");
     JUnitTestCase.assertTrue(classElement.isAccessibleIn(library2));
   }
   void test_isAccessibleIn_public_sameLibrary() {
-    LibraryElementImpl library16 = ElementFactory.library(new AnalysisContextImpl(), "lib");
+    LibraryElementImpl library17 = ElementFactory.library(new AnalysisContextImpl(), "lib");
     ClassElement classElement = ElementFactory.classElement2("C", []);
-    ((library16.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classElement];
-    JUnitTestCase.assertTrue(classElement.isAccessibleIn(library16));
+    ((library17.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classElement];
+    JUnitTestCase.assertTrue(classElement.isAccessibleIn(library17));
   }
   static dartSuite() {
     _ut.group('ElementImplTest', () {
+//      _ut.test('test_equals', () {
+//        final __test = new ElementImplTest();
+//        runJUnitTest(__test, __test.test_equals);
+//      });
       _ut.test('test_isAccessibleIn_private_differentLibrary', () {
         final __test = new ElementImplTest();
         runJUnitTest(__test, __test.test_isAccessibleIn_private_differentLibrary);
       });
       _ut.test('test_isAccessibleIn_private_sameLibrary', () {
         final __test = new ElementImplTest();
         runJUnitTest(__test, __test.test_isAccessibleIn_private_sameLibrary);
       });
       _ut.test('test_isAccessibleIn_public_differentLibrary', () {
         final __test = new ElementImplTest();
         runJUnitTest(__test, __test.test_isAccessibleIn_public_differentLibrary);
       });
       _ut.test('test_isAccessibleIn_public_sameLibrary', () {
         final __test = new ElementImplTest();
         runJUnitTest(__test, __test.test_isAccessibleIn_public_sameLibrary);
       });
     });
   }
 }
-class InterfaceTypeImplTest extends EngineTestCase {
-  void test_computeLongestInheritancePathToObject_multipleInterfacePaths() {
-    ClassElementImpl elementA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ClassElementImpl elementB = (ElementFactory.classElement2("B", []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    ClassElementImpl elementD = (ElementFactory.classElement2("D", []) as ClassElementImpl);
-    ClassElementImpl elementE = (ElementFactory.classElement2("E", []) as ClassElementImpl);
-    elementB.interfaces = <InterfaceType> [elementA.type];
-    elementC.interfaces = <InterfaceType> [elementA.type];
-    elementD.interfaces = <InterfaceType> [elementC.type];
-    elementE.interfaces = <InterfaceType> [elementB.type, elementD.type];
-    JUnitTestCase.assertEquals(2, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementB.type));
-    JUnitTestCase.assertEquals(4, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementE.type));
-  }
-  void test_computeLongestInheritancePathToObject_multipleSuperclassPaths() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElement elementC = ElementFactory.classElement("C", elementA.type, []);
-    ClassElement elementD = ElementFactory.classElement("D", elementC.type, []);
-    ClassElementImpl elementE = (ElementFactory.classElement("E", elementB.type, []) as ClassElementImpl);
-    elementE.interfaces = <InterfaceType> [elementD.type];
-    JUnitTestCase.assertEquals(2, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementB.type));
-    JUnitTestCase.assertEquals(4, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementE.type));
-  }
-  void test_computeLongestInheritancePathToObject_object() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    InterfaceType object = elementA.supertype;
-    JUnitTestCase.assertEquals(0, InterfaceTypeImpl.computeLongestInheritancePathToObject(object));
-  }
-  void test_computeLongestInheritancePathToObject_singleInterfacePath() {
-    ClassElementImpl elementA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ClassElementImpl elementB = (ElementFactory.classElement2("B", []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    elementB.interfaces = <InterfaceType> [elementA.type];
-    elementC.interfaces = <InterfaceType> [elementB.type];
-    JUnitTestCase.assertEquals(1, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementA.type));
-    JUnitTestCase.assertEquals(2, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementB.type));
-    JUnitTestCase.assertEquals(3, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementC.type));
-  }
-  void test_computeLongestInheritancePathToObject_singleSuperclassPath() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElement elementC = ElementFactory.classElement("C", elementB.type, []);
-    JUnitTestCase.assertEquals(1, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementA.type));
-    JUnitTestCase.assertEquals(2, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementB.type));
-    JUnitTestCase.assertEquals(3, InterfaceTypeImpl.computeLongestInheritancePathToObject(elementC.type));
-  }
-  void test_computeSuperinterfaceSet_multipleInterfacePaths() {
-    ClassElementImpl elementA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ClassElementImpl elementB = (ElementFactory.classElement2("B", []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    ClassElementImpl elementD = (ElementFactory.classElement2("D", []) as ClassElementImpl);
-    ClassElementImpl elementE = (ElementFactory.classElement2("E", []) as ClassElementImpl);
-    elementB.interfaces = <InterfaceType> [elementA.type];
-    elementC.interfaces = <InterfaceType> [elementA.type];
-    elementD.interfaces = <InterfaceType> [elementC.type];
-    elementE.interfaces = <InterfaceType> [elementB.type, elementD.type];
-    Set<InterfaceType> superinterfacesOfD = InterfaceTypeImpl.computeSuperinterfaceSet(elementD.type);
-    JUnitTestCase.assertNotNull(superinterfacesOfD);
-    JUnitTestCase.assertTrue(superinterfacesOfD.contains(ElementFactory.object.type));
-    JUnitTestCase.assertTrue(superinterfacesOfD.contains(elementA.type));
-    JUnitTestCase.assertTrue(superinterfacesOfD.contains(elementC.type));
-    JUnitTestCase.assertEquals(3, superinterfacesOfD.length);
-    Set<InterfaceType> superinterfacesOfE = InterfaceTypeImpl.computeSuperinterfaceSet(elementE.type);
-    JUnitTestCase.assertNotNull(superinterfacesOfE);
-    JUnitTestCase.assertTrue(superinterfacesOfE.contains(ElementFactory.object.type));
-    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementA.type));
-    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementB.type));
-    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementC.type));
-    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementD.type));
-    JUnitTestCase.assertEquals(5, superinterfacesOfE.length);
-  }
-  void test_computeSuperinterfaceSet_multipleSuperclassPaths() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElement elementC = ElementFactory.classElement("C", elementA.type, []);
-    ClassElement elementD = ElementFactory.classElement("D", elementC.type, []);
-    ClassElementImpl elementE = (ElementFactory.classElement("E", elementB.type, []) as ClassElementImpl);
-    elementE.interfaces = <InterfaceType> [elementD.type];
-    Set<InterfaceType> superinterfacesOfD = InterfaceTypeImpl.computeSuperinterfaceSet(elementD.type);
-    JUnitTestCase.assertNotNull(superinterfacesOfD);
-    JUnitTestCase.assertTrue(superinterfacesOfD.contains(ElementFactory.object.type));
-    JUnitTestCase.assertTrue(superinterfacesOfD.contains(elementA.type));
-    JUnitTestCase.assertTrue(superinterfacesOfD.contains(elementC.type));
-    JUnitTestCase.assertEquals(3, superinterfacesOfD.length);
-    Set<InterfaceType> superinterfacesOfE = InterfaceTypeImpl.computeSuperinterfaceSet(elementE.type);
-    JUnitTestCase.assertNotNull(superinterfacesOfE);
-    JUnitTestCase.assertTrue(superinterfacesOfE.contains(ElementFactory.object.type));
-    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementA.type));
-    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementB.type));
-    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementC.type));
-    JUnitTestCase.assertTrue(superinterfacesOfE.contains(elementD.type));
-    JUnitTestCase.assertEquals(5, superinterfacesOfE.length);
-  }
-  void test_computeSuperinterfaceSet_singleInterfacePath() {
-    ClassElementImpl elementA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ClassElementImpl elementB = (ElementFactory.classElement2("B", []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    elementB.interfaces = <InterfaceType> [elementA.type];
-    elementC.interfaces = <InterfaceType> [elementB.type];
-    Set<InterfaceType> superinterfacesOfA = InterfaceTypeImpl.computeSuperinterfaceSet(elementA.type);
-    JUnitTestCase.assertNotNull(superinterfacesOfA);
-    JUnitTestCase.assertTrue(superinterfacesOfA.contains(ElementFactory.object.type));
-    JUnitTestCase.assertEquals(1, superinterfacesOfA.length);
-    Set<InterfaceType> superinterfacesOfB = InterfaceTypeImpl.computeSuperinterfaceSet(elementB.type);
-    JUnitTestCase.assertNotNull(superinterfacesOfB);
-    JUnitTestCase.assertTrue(superinterfacesOfB.contains(ElementFactory.object.type));
-    JUnitTestCase.assertTrue(superinterfacesOfB.contains(elementA.type));
-    JUnitTestCase.assertEquals(2, superinterfacesOfB.length);
-    Set<InterfaceType> superinterfacesOfC = InterfaceTypeImpl.computeSuperinterfaceSet(elementC.type);
-    JUnitTestCase.assertNotNull(superinterfacesOfC);
-    JUnitTestCase.assertTrue(superinterfacesOfC.contains(ElementFactory.object.type));
-    JUnitTestCase.assertTrue(superinterfacesOfC.contains(elementA.type));
-    JUnitTestCase.assertTrue(superinterfacesOfC.contains(elementB.type));
-    JUnitTestCase.assertEquals(3, superinterfacesOfC.length);
-  }
-  void test_computeSuperinterfaceSet_singleSuperclassPath() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElement elementC = ElementFactory.classElement("C", elementB.type, []);
-    Set<InterfaceType> superinterfacesOfA = InterfaceTypeImpl.computeSuperinterfaceSet(elementA.type);
-    JUnitTestCase.assertNotNull(superinterfacesOfA);
-    JUnitTestCase.assertTrue(superinterfacesOfA.contains(ElementFactory.object.type));
-    JUnitTestCase.assertEquals(1, superinterfacesOfA.length);
-    Set<InterfaceType> superinterfacesOfB = InterfaceTypeImpl.computeSuperinterfaceSet(elementB.type);
-    JUnitTestCase.assertNotNull(superinterfacesOfB);
-    JUnitTestCase.assertTrue(superinterfacesOfB.contains(ElementFactory.object.type));
-    JUnitTestCase.assertTrue(superinterfacesOfB.contains(elementA.type));
-    JUnitTestCase.assertEquals(2, superinterfacesOfB.length);
-    Set<InterfaceType> superinterfacesOfC = InterfaceTypeImpl.computeSuperinterfaceSet(elementC.type);
-    JUnitTestCase.assertNotNull(superinterfacesOfC);
-    JUnitTestCase.assertTrue(superinterfacesOfC.contains(ElementFactory.object.type));
-    JUnitTestCase.assertTrue(superinterfacesOfC.contains(elementA.type));
-    JUnitTestCase.assertTrue(superinterfacesOfC.contains(elementB.type));
-    JUnitTestCase.assertEquals(3, superinterfacesOfC.length);
-  }
+class FunctionTypeImplTest extends EngineTestCase {
   void test_creation() {
-    JUnitTestCase.assertNotNull(new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("A"))));
+    JUnitTestCase.assertNotNull(new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f"))));
   }
   void test_getElement() {
-    ClassElementImpl typeElement = new ClassElementImpl(ASTFactory.identifier2("A"));
-    InterfaceTypeImpl type = new InterfaceTypeImpl.con1(typeElement);
+    FunctionElementImpl typeElement = new FunctionElementImpl.con1(ASTFactory.identifier2("f"));
+    FunctionTypeImpl type = new FunctionTypeImpl.con1(typeElement);
     JUnitTestCase.assertEquals(typeElement, type.element);
   }
-  void test_getLeastUpperBound_directInterfaceCase() {
-    ClassElementImpl elementA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ClassElementImpl elementB = (ElementFactory.classElement2("B", []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    elementB.interfaces = <InterfaceType> [typeA];
-    elementC.interfaces = <InterfaceType> [typeB];
-    JUnitTestCase.assertEquals(typeB, typeB.getLeastUpperBound(typeC));
-    JUnitTestCase.assertEquals(typeB, typeC.getLeastUpperBound(typeB));
-  }
-  void test_getLeastUpperBound_directSubclassCase() {
-    ClassElementImpl elementA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ClassElementImpl elementB = (ElementFactory.classElement("B", elementA.type, []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement("C", elementB.type, []) as ClassElementImpl);
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    JUnitTestCase.assertEquals(typeB, typeB.getLeastUpperBound(typeC));
-    JUnitTestCase.assertEquals(typeB, typeC.getLeastUpperBound(typeB));
-  }
-  void test_getLeastUpperBound_functionType() {
-    Type2 interfaceType = ElementFactory.classElement2("A", []).type;
+  void test_getNamedParameterTypes() {
+    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
+    Map<String, Type2> types = type.namedParameterTypes;
+    EngineTestCase.assertSize2(0, types);
+  }
+  void test_getNormalParameterTypes() {
+    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
+    List<Type2> types = type.normalParameterTypes;
+    EngineTestCase.assertLength(0, types);
+  }
+  void test_getReturnType() {
+    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
+    Type2 returnType7 = type.returnType;
+    JUnitTestCase.assertEquals(VoidTypeImpl.instance, returnType7);
+  }
+  void test_getTypeArguments() {
+    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
+    List<Type2> types = type.typeArguments;
+    EngineTestCase.assertLength(0, types);
+  }
+  void test_hashCode_element() {
+    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
+    type.hashCode;
+  }
+  void test_hashCode_noElement() {
+    FunctionTypeImpl type = new FunctionTypeImpl.con1((null as ExecutableElement));
+    type.hashCode;
+  }
+  void test_isSubtypeOf_baseCase_classFunction() {
+    ClassElementImpl functionElement = ElementFactory.classElement2("Function", []);
+    InterfaceTypeImpl functionType = new InterfaceTypeImpl_11(functionElement);
+    FunctionType f = ElementFactory.functionElement("f").type;
+    JUnitTestCase.assertTrue(f.isSubtypeOf(functionType));
+  }
+  void test_isSubtypeOf_baseCase_notFunctionType() {
+    FunctionType f = ElementFactory.functionElement("f").type;
+    InterfaceType t = ElementFactory.classElement2("C", []).type;
+    JUnitTestCase.assertFalse(f.isSubtypeOf(t));
+  }
+  void test_isSubtypeOf_baseCase_null() {
+    FunctionType f = ElementFactory.functionElement("f").type;
+    JUnitTestCase.assertFalse(f.isSubtypeOf(null));
+  }
+  void test_isSubtypeOf_baseCase_self() {
+    FunctionType f = ElementFactory.functionElement("f").type;
+    JUnitTestCase.assertTrue(f.isSubtypeOf(f));
+  }
+  void test_isSubtypeOf_namedParameters_isAssignable() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["name"], <ClassElement> [a]).type;
+    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["name"], <ClassElement> [b]).type;
+    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
+    JUnitTestCase.assertTrue(s.isSubtypeOf(t));
+  }
+  void test_isSubtypeOf_namedParameters_isNotAssignable() {
+    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["name"], <ClassElement> [ElementFactory.classElement2("A", [])]).type;
+    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["name"], <ClassElement> [ElementFactory.classElement2("B", [])]).type;
+    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_namedParameters_namesDifferent() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["name"], <ClassElement> [a]).type;
+    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["diff"], <ClassElement> [b]).type;
+    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
+    JUnitTestCase.assertFalse(s.isSubtypeOf(t));
+  }
+  void test_isSubtypeOf_namedParameters_orderOfParams() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["A", "B"], <ClassElement> [a, b]).type;
+    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["B", "A"], <ClassElement> [b, a]).type;
+    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_namedParameters_orderOfParams2() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["B"], <ClassElement> [b]).type;
+    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["B", "A"], <ClassElement> [b, a]).type;
+    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_namedParameters_orderOfParams3() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["A", "B"], <ClassElement> [a, b]).type;
+    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["B"], <ClassElement> [b]).type;
+    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_namedParameters_sHasMoreParams() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["name"], <ClassElement> [a]).type;
+    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["name", "name2"], <ClassElement> [b, b]).type;
+    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_namedParameters_tHasMoreParams() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement4("t", null, null, <String> ["name", "name2"], <ClassElement> [a, a]).type;
+    FunctionType s = ElementFactory.functionElement4("s", null, null, <String> ["name"], <ClassElement> [b]).type;
+    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_normalParameters_isAssignable() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement5("t", <ClassElement> [a]).type;
+    FunctionType s = ElementFactory.functionElement5("s", <ClassElement> [b]).type;
+    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
+    JUnitTestCase.assertTrue(s.isSubtypeOf(t));
+  }
+  void test_isSubtypeOf_normalParameters_isNotAssignable() {
+    FunctionType t = ElementFactory.functionElement5("t", <ClassElement> [ElementFactory.classElement2("A", [])]).type;
+    FunctionType s = ElementFactory.functionElement5("s", <ClassElement> [ElementFactory.classElement2("B", [])]).type;
+    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_normalParameters_sHasMoreParams() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement5("t", <ClassElement> [a]).type;
+    FunctionType s = ElementFactory.functionElement5("s", <ClassElement> [b, b]).type;
+    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_normalParameters_tHasMoreParams() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement5("t", <ClassElement> [a, a]).type;
+    FunctionType s = ElementFactory.functionElement5("s", <ClassElement> [b]).type;
+    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_optionalParameters_isAssignable() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement6("t", null, <ClassElement> [a]).type;
+    FunctionType s = ElementFactory.functionElement6("s", null, <ClassElement> [b]).type;
+    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
+    JUnitTestCase.assertTrue(s.isSubtypeOf(t));
+  }
+  void test_isSubtypeOf_optionalParameters_isNotAssignable() {
+    FunctionType t = ElementFactory.functionElement6("t", null, <ClassElement> [ElementFactory.classElement2("A", [])]).type;
+    FunctionType s = ElementFactory.functionElement6("s", null, <ClassElement> [ElementFactory.classElement2("B", [])]).type;
+    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_optionalParameters_sHasMoreParams() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement6("t", null, <ClassElement> [a]).type;
+    FunctionType s = ElementFactory.functionElement6("s", null, <ClassElement> [b, b]).type;
+    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_optionalParameters_tHasMoreParams() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement6("t", null, <ClassElement> [a, a]).type;
+    FunctionType s = ElementFactory.functionElement6("s", null, <ClassElement> [b]).type;
+    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_returnType_sIsVoid() {
+    FunctionType t = ElementFactory.functionElement2("t", ElementFactory.classElement2("A", [])).type;
+    FunctionType s = ElementFactory.functionElement("s").type;
+    JUnitTestCase.assertTrue(VoidTypeImpl.instance == s.returnType);
+    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_returnType_tAssignableToS() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    ClassElement b = ElementFactory.classElement("B", a.type, []);
+    FunctionType t = ElementFactory.functionElement2("t", a).type;
+    FunctionType s = ElementFactory.functionElement2("s", b).type;
+    JUnitTestCase.assertTrue(t.isSubtypeOf(s));
+    JUnitTestCase.assertTrue(s.isSubtypeOf(t));
+  }
+  void test_isSubtypeOf_returnType_tNotAssignableToS() {
+    FunctionType t = ElementFactory.functionElement2("t", ElementFactory.classElement2("A", [])).type;
+    FunctionType s = ElementFactory.functionElement2("s", ElementFactory.classElement2("B", [])).type;
+    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
+  }
+  void test_isSubtypeOf_wrongFunctionType_normal_named() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    FunctionType t = ElementFactory.functionElement5("t", <ClassElement> [a]).type;
+    FunctionType s = ElementFactory.functionElement7("s", null, <String> ["name"], <ClassElement> [a]).type;
+    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
+    JUnitTestCase.assertFalse(s.isSubtypeOf(t));
+  }
+  void test_isSubtypeOf_wrongFunctionType_normal_optional() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    FunctionType t = ElementFactory.functionElement5("t", <ClassElement> [a]).type;
+    FunctionType s = ElementFactory.functionElement6("s", null, <ClassElement> [a]).type;
+    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
+    JUnitTestCase.assertFalse(s.isSubtypeOf(t));
+  }
+  void test_isSubtypeOf_wrongFunctionType_optional_named() {
+    ClassElement a = ElementFactory.classElement2("A", []);
+    FunctionType t = ElementFactory.functionElement6("t", null, <ClassElement> [a]).type;
+    FunctionType s = ElementFactory.functionElement7("s", null, <String> ["name"], <ClassElement> [a]).type;
+    JUnitTestCase.assertFalse(t.isSubtypeOf(s));
+    JUnitTestCase.assertFalse(s.isSubtypeOf(t));
+  }
+  void test_setNamedParameterTypes() {
+    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
+    LinkedHashMap<String, Type2> expectedTypes = new LinkedHashMap<String, Type2>();
+    expectedTypes["a"] = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("C")));
+    type.namedParameterTypes = expectedTypes;
+    Map<String, Type2> types = type.namedParameterTypes;
+    JUnitTestCase.assertEquals(expectedTypes, types);
+  }
+  void test_setNormalParameterTypes() {
+    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
+    List<Type2> expectedTypes = <Type2> [new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("C")))];
+    type.normalParameterTypes = expectedTypes;
+    List<Type2> types = type.normalParameterTypes;
+    JUnitTestCase.assertEquals(expectedTypes, types);
+  }
+  void test_setReturnType() {
+    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
+    Type2 expectedType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("C")));
+    type.returnType = expectedType;
+    Type2 returnType8 = type.returnType;
+    JUnitTestCase.assertEquals(expectedType, returnType8);
+  }
+  void test_setTypeArguments() {
+    FunctionTypeImpl type = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
+    Type2 expectedType = new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("C")));
+    type.typeArguments = <Type2> [expectedType];
+    List<Type2> arguments = type.typeArguments;
+    EngineTestCase.assertLength(1, arguments);
+    JUnitTestCase.assertEquals(expectedType, arguments[0]);
+  }
+  void test_substitute2_equal() {
     FunctionTypeImpl functionType = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
-    JUnitTestCase.assertNull(interfaceType.getLeastUpperBound(functionType));
-  }
-  void test_getLeastUpperBound_mixinCase() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElement elementC = ElementFactory.classElement("C", elementA.type, []);
-    ClassElementImpl elementD = (ElementFactory.classElement("D", elementB.type, []) as ClassElementImpl);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeC = elementC.type;
-    InterfaceType typeD = elementD.type;
-    elementD.mixins = <InterfaceType> [ElementFactory.classElement2("M", []).type, ElementFactory.classElement2("N", []).type, ElementFactory.classElement2("O", []).type, ElementFactory.classElement2("P", []).type];
-    JUnitTestCase.assertEquals(typeA, typeD.getLeastUpperBound(typeC));
-    JUnitTestCase.assertEquals(typeA, typeC.getLeastUpperBound(typeD));
-  }
-  void test_getLeastUpperBound_null() {
-    Type2 interfaceType = ElementFactory.classElement2("A", []).type;
-    JUnitTestCase.assertNull(interfaceType.getLeastUpperBound(null));
-  }
-  void test_getLeastUpperBound_object() {
-    ClassElementImpl elementA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ClassElementImpl elementB = (ElementFactory.classElement2("B", []) as ClassElementImpl);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    Type2 typeObject = typeA.element.supertype;
-    JUnitTestCase.assertNull(((typeObject.element as ClassElement)).supertype);
-    JUnitTestCase.assertEquals(typeObject, typeB.element.supertype);
-    JUnitTestCase.assertEquals(typeObject, typeA.getLeastUpperBound(typeB));
-  }
-  void test_getLeastUpperBound_self() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    InterfaceType typeA = elementA.type;
-    JUnitTestCase.assertEquals(typeA, typeA.getLeastUpperBound(typeA));
-  }
-  void test_getLeastUpperBound_sharedSuperclass1() {
-    ClassElementImpl elementA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ClassElementImpl elementB = (ElementFactory.classElement("B", elementA.type, []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement("C", elementA.type, []) as ClassElementImpl);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    JUnitTestCase.assertEquals(typeA, typeB.getLeastUpperBound(typeC));
-    JUnitTestCase.assertEquals(typeA, typeC.getLeastUpperBound(typeB));
-  }
-  void test_getLeastUpperBound_sharedSuperclass2() {
-    ClassElementImpl elementA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ClassElementImpl elementB = (ElementFactory.classElement("B", elementA.type, []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement("C", elementA.type, []) as ClassElementImpl);
-    ClassElementImpl elementD = (ElementFactory.classElement("D", elementC.type, []) as ClassElementImpl);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeD = elementD.type;
-    JUnitTestCase.assertEquals(typeA, typeB.getLeastUpperBound(typeD));
-    JUnitTestCase.assertEquals(typeA, typeD.getLeastUpperBound(typeB));
-  }
-  void test_getLeastUpperBound_sharedSuperclass3() {
-    ClassElementImpl elementA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ClassElementImpl elementB = (ElementFactory.classElement("B", elementA.type, []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement("C", elementB.type, []) as ClassElementImpl);
-    ClassElementImpl elementD = (ElementFactory.classElement("D", elementB.type, []) as ClassElementImpl);
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    InterfaceType typeD = elementD.type;
-    JUnitTestCase.assertEquals(typeB, typeC.getLeastUpperBound(typeD));
-    JUnitTestCase.assertEquals(typeB, typeD.getLeastUpperBound(typeC));
-  }
-  void test_getLeastUpperBound_sharedSuperclass4() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementA2 = ElementFactory.classElement2("A2", []);
-    ClassElement elementA3 = ElementFactory.classElement2("A3", []);
-    ClassElementImpl elementB = (ElementFactory.classElement("B", elementA.type, []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement("C", elementA.type, []) as ClassElementImpl);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeA2 = elementA2.type;
-    InterfaceType typeA3 = elementA3.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    elementB.interfaces = <InterfaceType> [typeA2];
-    elementC.interfaces = <InterfaceType> [typeA3];
-    JUnitTestCase.assertEquals(typeA, typeB.getLeastUpperBound(typeC));
-    JUnitTestCase.assertEquals(typeA, typeC.getLeastUpperBound(typeB));
-  }
-  void test_getLeastUpperBound_sharedSuperinterface1() {
-    ClassElementImpl elementA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ClassElementImpl elementB = (ElementFactory.classElement2("B", []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    elementB.interfaces = <InterfaceType> [typeA];
-    elementC.interfaces = <InterfaceType> [typeA];
-    JUnitTestCase.assertEquals(typeA, typeB.getLeastUpperBound(typeC));
-    JUnitTestCase.assertEquals(typeA, typeC.getLeastUpperBound(typeB));
-  }
-  void test_getLeastUpperBound_sharedSuperinterface2() {
-    ClassElementImpl elementA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ClassElementImpl elementB = (ElementFactory.classElement2("B", []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    ClassElementImpl elementD = (ElementFactory.classElement2("D", []) as ClassElementImpl);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    InterfaceType typeD = elementD.type;
-    elementB.interfaces = <InterfaceType> [typeA];
-    elementC.interfaces = <InterfaceType> [typeA];
-    elementD.interfaces = <InterfaceType> [typeC];
-    JUnitTestCase.assertEquals(typeA, typeB.getLeastUpperBound(typeD));
-    JUnitTestCase.assertEquals(typeA, typeD.getLeastUpperBound(typeB));
-  }
-  void test_getLeastUpperBound_sharedSuperinterface3() {
-    ClassElementImpl elementA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ClassElementImpl elementB = (ElementFactory.classElement2("B", []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    ClassElementImpl elementD = (ElementFactory.classElement2("D", []) as ClassElementImpl);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    InterfaceType typeD = elementD.type;
-    elementB.interfaces = <InterfaceType> [typeA];
-    elementC.interfaces = <InterfaceType> [typeB];
-    elementD.interfaces = <InterfaceType> [typeB];
-    JUnitTestCase.assertEquals(typeB, typeC.getLeastUpperBound(typeD));
-    JUnitTestCase.assertEquals(typeB, typeD.getLeastUpperBound(typeC));
-  }
-  void test_getLeastUpperBound_sharedSuperinterface4() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementA2 = ElementFactory.classElement2("A2", []);
-    ClassElement elementA3 = ElementFactory.classElement2("A3", []);
-    ClassElementImpl elementB = (ElementFactory.classElement2("B", []) as ClassElementImpl);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeA2 = elementA2.type;
-    InterfaceType typeA3 = elementA3.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    elementB.interfaces = <InterfaceType> [typeA, typeA2];
-    elementC.interfaces = <InterfaceType> [typeA, typeA3];
-    JUnitTestCase.assertEquals(typeA, typeB.getLeastUpperBound(typeC));
-    JUnitTestCase.assertEquals(typeA, typeC.getLeastUpperBound(typeB));
-  }
-  void test_getTypeArguments() {
-    InterfaceTypeImpl type = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("A")));
-    EngineTestCase.assertLength(0, type.typeArguments);
-  }
-  void test_isDirectSupertypeOf_extends() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    InterfaceTypeImpl typeA = new InterfaceTypeImpl.con1(elementA);
-    InterfaceTypeImpl typeB = new InterfaceTypeImpl.con1(elementB);
-    JUnitTestCase.assertTrue(typeA.isDirectSupertypeOf(typeB));
-  }
-  void test_isDirectSupertypeOf_false() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement2("B", []);
-    ClassElement elementC = ElementFactory.classElement("C", elementB.type, []);
-    InterfaceTypeImpl typeA = new InterfaceTypeImpl.con1(elementA);
-    InterfaceTypeImpl typeC = new InterfaceTypeImpl.con1(elementC);
-    JUnitTestCase.assertFalse(typeA.isDirectSupertypeOf(typeC));
-  }
-  void test_isDirectSupertypeOf_implements() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement2("B", []);
-    ((elementB as ClassElementImpl)).interfaces = <InterfaceType> [elementA.type];
-    InterfaceTypeImpl typeA = new InterfaceTypeImpl.con1(elementA);
-    InterfaceTypeImpl typeB = new InterfaceTypeImpl.con1(elementB);
-    JUnitTestCase.assertTrue(typeA.isDirectSupertypeOf(typeB));
-  }
-  void test_isDirectSupertypeOf_with() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement2("B", []);
-    ((elementB as ClassElementImpl)).mixins = <InterfaceType> [elementA.type];
-    InterfaceTypeImpl typeA = new InterfaceTypeImpl.con1(elementA);
-    InterfaceTypeImpl typeB = new InterfaceTypeImpl.con1(elementB);
-    JUnitTestCase.assertTrue(typeA.isDirectSupertypeOf(typeB));
-  }
-  void test_isMoreSpecificThan_bottom() {
-    Type2 type19 = ElementFactory.classElement2("A", []).type;
-    JUnitTestCase.assertTrue(BottomTypeImpl.instance.isMoreSpecificThan(type19));
-  }
-  void test_isMoreSpecificThan_covariance() {
-    ClassElement elementA = ElementFactory.classElement2("A", ["E"]);
-    ClassElement elementI = ElementFactory.classElement2("I", []);
-    ClassElement elementJ = ElementFactory.classElement("J", elementI.type, []);
-    InterfaceTypeImpl typeAI = new InterfaceTypeImpl.con1(elementA);
-    InterfaceTypeImpl typeAJ = new InterfaceTypeImpl.con1(elementA);
-    typeAI.typeArguments = <Type2> [elementI.type];
-    typeAJ.typeArguments = <Type2> [elementJ.type];
-    JUnitTestCase.assertTrue(typeAJ.isMoreSpecificThan(typeAI));
-    JUnitTestCase.assertFalse(typeAI.isMoreSpecificThan(typeAJ));
-  }
-  void test_isMoreSpecificThan_directSupertype() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    JUnitTestCase.assertTrue(typeB.isMoreSpecificThan(typeA));
-    JUnitTestCase.assertFalse(typeA.isMoreSpecificThan(typeB));
-  }
-  void test_isMoreSpecificThan_dynamic() {
-    InterfaceType type20 = ElementFactory.classElement2("A", []).type;
-    JUnitTestCase.assertTrue(type20.isMoreSpecificThan(DynamicTypeImpl.instance));
-  }
-  void test_isMoreSpecificThan_indirectSupertype() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElement elementC = ElementFactory.classElement("C", elementB.type, []);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeC = elementC.type;
-    JUnitTestCase.assertTrue(typeC.isMoreSpecificThan(typeA));
-  }
-  void test_isMoreSpecificThan_self() {
-    InterfaceType type21 = ElementFactory.classElement2("A", []).type;
-    JUnitTestCase.assertTrue(type21.isMoreSpecificThan(type21));
-  }
-  void test_isSubtypeOf_directSubtype() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    JUnitTestCase.assertTrue(typeB.isSubtypeOf(typeA));
-    JUnitTestCase.assertFalse(typeA.isSubtypeOf(typeB));
-  }
-  void test_isSubtypeOf_dynamic() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    InterfaceType typeA = elementA.type;
-    Type2 dynamicType = DynamicTypeImpl.instance;
-    JUnitTestCase.assertFalse(dynamicType.isSubtypeOf(typeA));
-    JUnitTestCase.assertTrue(typeA.isSubtypeOf(dynamicType));
-  }
-  void test_isSubtypeOf_indirectSubtype() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElement elementC = ElementFactory.classElement("C", elementB.type, []);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeC = elementC.type;
-    JUnitTestCase.assertTrue(typeC.isSubtypeOf(typeA));
-    JUnitTestCase.assertFalse(typeA.isSubtypeOf(typeC));
-  }
-  void test_isSubtypeOf_interface() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    InterfaceType typeObject = elementA.supertype;
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    elementC.interfaces = <InterfaceType> [typeB];
-    JUnitTestCase.assertTrue(typeC.isSubtypeOf(typeB));
-    JUnitTestCase.assertTrue(typeC.isSubtypeOf(typeObject));
-    JUnitTestCase.assertTrue(typeC.isSubtypeOf(typeA));
-    JUnitTestCase.assertFalse(typeA.isSubtypeOf(typeC));
-  }
-  void test_isSubtypeOf_mixins() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    InterfaceType typeObject = elementA.supertype;
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    elementC.mixins = <InterfaceType> [typeB];
-    JUnitTestCase.assertTrue(typeC.isSubtypeOf(typeB));
-    JUnitTestCase.assertTrue(typeC.isSubtypeOf(typeObject));
-    JUnitTestCase.assertFalse(typeC.isSubtypeOf(typeA));
-    JUnitTestCase.assertFalse(typeA.isSubtypeOf(typeC));
-  }
-  void test_isSubtypeOf_object() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeObject = elementA.supertype;
-    JUnitTestCase.assertTrue(typeA.isSubtypeOf(typeObject));
-    JUnitTestCase.assertFalse(typeObject.isSubtypeOf(typeA));
-  }
-  void test_isSubtypeOf_self() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    InterfaceType typeA = elementA.type;
-    JUnitTestCase.assertTrue(typeA.isSubtypeOf(typeA));
-  }
-  void test_isSubtypeOf_typeArguments() {
-    ClassElement elementA = ElementFactory.classElement2("A", ["E"]);
-    ClassElement elementI = ElementFactory.classElement2("I", []);
-    ClassElement elementJ = ElementFactory.classElement("J", elementI.type, []);
-    ClassElement elementK = ElementFactory.classElement2("K", []);
-    InterfaceType typeA = elementA.type;
-    InterfaceTypeImpl typeAI = new InterfaceTypeImpl.con1(elementA);
-    InterfaceTypeImpl typeAJ = new InterfaceTypeImpl.con1(elementA);
-    InterfaceTypeImpl typeAK = new InterfaceTypeImpl.con1(elementA);
-    typeAI.typeArguments = <Type2> [elementI.type];
-    typeAJ.typeArguments = <Type2> [elementJ.type];
-    typeAK.typeArguments = <Type2> [elementK.type];
-    JUnitTestCase.assertTrue(typeAJ.isSubtypeOf(typeAI));
-    JUnitTestCase.assertFalse(typeAI.isSubtypeOf(typeAJ));
-    JUnitTestCase.assertTrue(typeAI.isSubtypeOf(typeAI));
-    JUnitTestCase.assertTrue(typeA.isSubtypeOf(typeAI));
-    JUnitTestCase.assertTrue(typeA.isSubtypeOf(typeAJ));
-    JUnitTestCase.assertTrue(typeAI.isSubtypeOf(typeA));
-    JUnitTestCase.assertTrue(typeAJ.isSubtypeOf(typeA));
-    JUnitTestCase.assertFalse(typeAI.isSubtypeOf(typeAK));
-    JUnitTestCase.assertFalse(typeAK.isSubtypeOf(typeAI));
-  }
-  void test_isSupertypeOf_directSupertype() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    JUnitTestCase.assertFalse(typeB.isSupertypeOf(typeA));
-    JUnitTestCase.assertTrue(typeA.isSupertypeOf(typeB));
-  }
-  void test_isSupertypeOf_dynamic() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    InterfaceType typeA = elementA.type;
-    Type2 dynamicType = DynamicTypeImpl.instance;
-    JUnitTestCase.assertTrue(dynamicType.isSupertypeOf(typeA));
-    JUnitTestCase.assertFalse(typeA.isSupertypeOf(dynamicType));
-  }
-  void test_isSupertypeOf_indirectSupertype() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElement elementC = ElementFactory.classElement("C", elementB.type, []);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeC = elementC.type;
-    JUnitTestCase.assertFalse(typeC.isSupertypeOf(typeA));
-    JUnitTestCase.assertTrue(typeA.isSupertypeOf(typeC));
-  }
-  void test_isSupertypeOf_interface() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    InterfaceType typeObject = elementA.supertype;
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    elementC.interfaces = <InterfaceType> [typeB];
-    JUnitTestCase.assertTrue(typeB.isSupertypeOf(typeC));
-    JUnitTestCase.assertTrue(typeObject.isSupertypeOf(typeC));
-    JUnitTestCase.assertTrue(typeA.isSupertypeOf(typeC));
-    JUnitTestCase.assertFalse(typeC.isSupertypeOf(typeA));
-  }
-  void test_isSupertypeOf_mixins() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    InterfaceType typeObject = elementA.supertype;
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    elementC.mixins = <InterfaceType> [typeB];
-    JUnitTestCase.assertTrue(typeB.isSupertypeOf(typeC));
-    JUnitTestCase.assertTrue(typeObject.isSupertypeOf(typeC));
-    JUnitTestCase.assertFalse(typeA.isSupertypeOf(typeC));
-    JUnitTestCase.assertFalse(typeC.isSupertypeOf(typeA));
-  }
-  void test_isSupertypeOf_object() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeObject = elementA.supertype;
-    JUnitTestCase.assertFalse(typeA.isSupertypeOf(typeObject));
-    JUnitTestCase.assertTrue(typeObject.isSupertypeOf(typeA));
-  }
-  void test_isSupertypeOf_self() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    InterfaceType typeA = elementA.type;
-    JUnitTestCase.assertTrue(typeA.isSupertypeOf(typeA));
-  }
-  void test_setTypeArguments() {
-    InterfaceTypeImpl type22 = (ElementFactory.classElement2("A", []).type as InterfaceTypeImpl);
-    List<Type2> typeArguments = <Type2> [new InterfaceTypeImpl.con1(ElementFactory.classElement2("B", [])), new InterfaceTypeImpl.con1(ElementFactory.classElement2("C", []))];
-    type22.typeArguments = typeArguments;
-    JUnitTestCase.assertEquals(typeArguments, type22.typeArguments);
-  }
-  void test_substitute_equal() {
-    ClassElementImpl classElement = new ClassElementImpl(ASTFactory.identifier2("A"));
-    TypeVariableElementImpl parameterElement = new TypeVariableElementImpl(ASTFactory.identifier2("E"));
-    InterfaceTypeImpl type = new InterfaceTypeImpl.con1(classElement);
-    TypeVariableTypeImpl parameter = new TypeVariableTypeImpl(parameterElement);
-    type.typeArguments = <Type2> [parameter];
-    InterfaceTypeImpl argumentType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("B")));
-    InterfaceType result = type.substitute2(<Type2> [argumentType], <Type2> [parameter]);
-    JUnitTestCase.assertEquals(classElement, result.element);
-    List<Type2> resultArguments = result.typeArguments;
-    EngineTestCase.assertLength(1, resultArguments);
-    JUnitTestCase.assertEquals(argumentType, resultArguments[0]);
-  }
-  void test_substitute_notEqual() {
-    ClassElementImpl classElement = new ClassElementImpl(ASTFactory.identifier2("A"));
-    TypeVariableElementImpl parameterElement = new TypeVariableElementImpl(ASTFactory.identifier2("E"));
-    InterfaceTypeImpl type = new InterfaceTypeImpl.con1(classElement);
-    TypeVariableTypeImpl parameter = new TypeVariableTypeImpl(parameterElement);
-    type.typeArguments = <Type2> [parameter];
-    InterfaceTypeImpl argumentType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("B")));
-    TypeVariableTypeImpl parameterType = new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("F")));
-    InterfaceType result = type.substitute2(<Type2> [argumentType], <Type2> [parameterType]);
-    JUnitTestCase.assertEquals(classElement, result.element);
-    List<Type2> resultArguments = result.typeArguments;
-    EngineTestCase.assertLength(1, resultArguments);
-    JUnitTestCase.assertEquals(parameter, resultArguments[0]);
+    TypeVariableTypeImpl parameterType = new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("E")));
+    functionType.returnType = parameterType;
+    functionType.normalParameterTypes = <Type2> [parameterType];
+    functionType.optionalParameterTypes = <Type2> [parameterType];
+    LinkedHashMap<String, Type2> namedParameterTypes = new LinkedHashMap<String, Type2>();
+    String namedParameterName = "c";
+    namedParameterTypes[namedParameterName] = parameterType;
+    functionType.namedParameterTypes = namedParameterTypes;
+    InterfaceTypeImpl argumentType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("D")));
+    FunctionType result = functionType.substitute2(<Type2> [argumentType], <Type2> [parameterType]);
+    JUnitTestCase.assertEquals(argumentType, result.returnType);
+    List<Type2> normalParameters = result.normalParameterTypes;
+    EngineTestCase.assertLength(1, normalParameters);
+    JUnitTestCase.assertEquals(argumentType, normalParameters[0]);
+    List<Type2> optionalParameters = result.optionalParameterTypes;
+    EngineTestCase.assertLength(1, optionalParameters);
+    JUnitTestCase.assertEquals(argumentType, optionalParameters[0]);
+    Map<String, Type2> namedParameters = result.namedParameterTypes;
+    EngineTestCase.assertSize2(1, namedParameters);
+    JUnitTestCase.assertEquals(argumentType, namedParameters[namedParameterName]);
+  }
+  void test_substitute2_notEqual() {
+    FunctionTypeImpl functionType = new FunctionTypeImpl.con1(new FunctionElementImpl.con1(ASTFactory.identifier2("f")));
+    Type2 returnType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("R")));
+    Type2 normalParameterType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("A")));
+    Type2 optionalParameterType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("B")));
+    Type2 namedParameterType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("C")));
+    functionType.returnType = returnType;
+    functionType.normalParameterTypes = <Type2> [normalParameterType];
+    functionType.optionalParameterTypes = <Type2> [optionalParameterType];
+    LinkedHashMap<String, Type2> namedParameterTypes = new LinkedHashMap<String, Type2>();
+    String namedParameterName = "c";
+    namedParameterTypes[namedParameterName] = namedParameterType;
+    functionType.namedParameterTypes = namedParameterTypes;
+    InterfaceTypeImpl argumentType = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("D")));
+    TypeVariableTypeImpl parameterType = new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("E")));
+    FunctionType result = functionType.substitute2(<Type2> [argumentType], <Type2> [parameterType]);
+    JUnitTestCase.assertEquals(returnType, result.returnType);
+    List<Type2> normalParameters = result.normalParameterTypes;
+    EngineTestCase.assertLength(1, normalParameters);
+    JUnitTestCase.assertEquals(normalParameterType, normalParameters[0]);
+    List<Type2> optionalParameters = result.optionalParameterTypes;
+    EngineTestCase.assertLength(1, optionalParameters);
+    JUnitTestCase.assertEquals(optionalParameterType, optionalParameters[0]);
+    Map<String, Type2> namedParameters = result.namedParameterTypes;
+    EngineTestCase.assertSize2(1, namedParameters);
+    JUnitTestCase.assertEquals(namedParameterType, namedParameters[namedParameterName]);
   }
   static dartSuite() {
-    _ut.group('InterfaceTypeImplTest', () {
-      _ut.test('test_computeLongestInheritancePathToObject_multipleInterfacePaths', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_computeLongestInheritancePathToObject_multipleInterfacePaths);
-      });
-      _ut.test('test_computeLongestInheritancePathToObject_multipleSuperclassPaths', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_computeLongestInheritancePathToObject_multipleSuperclassPaths);
-      });
-      _ut.test('test_computeLongestInheritancePathToObject_object', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_computeLongestInheritancePathToObject_object);
-      });
-      _ut.test('test_computeLongestInheritancePathToObject_singleInterfacePath', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_computeLongestInheritancePathToObject_singleInterfacePath);
-      });
-      _ut.test('test_computeLongestInheritancePathToObject_singleSuperclassPath', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_computeLongestInheritancePathToObject_singleSuperclassPath);
-      });
-      _ut.test('test_computeSuperinterfaceSet_multipleInterfacePaths', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_computeSuperinterfaceSet_multipleInterfacePaths);
-      });
-      _ut.test('test_computeSuperinterfaceSet_multipleSuperclassPaths', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_computeSuperinterfaceSet_multipleSuperclassPaths);
-      });
-      _ut.test('test_computeSuperinterfaceSet_singleInterfacePath', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_computeSuperinterfaceSet_singleInterfacePath);
-      });
-      _ut.test('test_computeSuperinterfaceSet_singleSuperclassPath', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_computeSuperinterfaceSet_singleSuperclassPath);
-      });
+    _ut.group('FunctionTypeImplTest', () {
       _ut.test('test_creation', () {
-        final __test = new InterfaceTypeImplTest();
+        final __test = new FunctionTypeImplTest();
         runJUnitTest(__test, __test.test_creation);
       });
       _ut.test('test_getElement', () {
-        final __test = new InterfaceTypeImplTest();
+        final __test = new FunctionTypeImplTest();
         runJUnitTest(__test, __test.test_getElement);
       });
-      _ut.test('test_getLeastUpperBound_directInterfaceCase', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_directInterfaceCase);
-      });
-      _ut.test('test_getLeastUpperBound_directSubclassCase', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_directSubclassCase);
-      });
-      _ut.test('test_getLeastUpperBound_functionType', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_functionType);
-      });
-      _ut.test('test_getLeastUpperBound_mixinCase', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_mixinCase);
-      });
-      _ut.test('test_getLeastUpperBound_null', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_null);
-      });
-      _ut.test('test_getLeastUpperBound_object', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_object);
-      });
-      _ut.test('test_getLeastUpperBound_self', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_self);
-      });
-      _ut.test('test_getLeastUpperBound_sharedSuperclass1', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperclass1);
-      });
-      _ut.test('test_getLeastUpperBound_sharedSuperclass2', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperclass2);
-      });
-      _ut.test('test_getLeastUpperBound_sharedSuperclass3', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperclass3);
-      });
-      _ut.test('test_getLeastUpperBound_sharedSuperclass4', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperclass4);
-      });
-      _ut.test('test_getLeastUpperBound_sharedSuperinterface1', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperinterface1);
-      });
-      _ut.test('test_getLeastUpperBound_sharedSuperinterface2', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperinterface2);
-      });
-      _ut.test('test_getLeastUpperBound_sharedSuperinterface3', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperinterface3);
-      });
-      _ut.test('test_getLeastUpperBound_sharedSuperinterface4', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_getLeastUpperBound_sharedSuperinterface4);
+      _ut.test('test_getNamedParameterTypes', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_getNamedParameterTypes);
+      });
+      _ut.test('test_getNormalParameterTypes', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_getNormalParameterTypes);
+      });
+      _ut.test('test_getReturnType', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_getReturnType);
       });
       _ut.test('test_getTypeArguments', () {
-        final __test = new InterfaceTypeImplTest();
+        final __test = new FunctionTypeImplTest();
         runJUnitTest(__test, __test.test_getTypeArguments);
       });
-      _ut.test('test_isDirectSupertypeOf_extends', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isDirectSupertypeOf_extends);
-      });
-      _ut.test('test_isDirectSupertypeOf_false', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isDirectSupertypeOf_false);
-      });
-      _ut.test('test_isDirectSupertypeOf_implements', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isDirectSupertypeOf_implements);
-      });
-      _ut.test('test_isDirectSupertypeOf_with', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isDirectSupertypeOf_with);
-      });
-      _ut.test('test_isMoreSpecificThan_bottom', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isMoreSpecificThan_bottom);
-      });
-      _ut.test('test_isMoreSpecificThan_covariance', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isMoreSpecificThan_covariance);
-      });
-      _ut.test('test_isMoreSpecificThan_directSupertype', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isMoreSpecificThan_directSupertype);
-      });
-      _ut.test('test_isMoreSpecificThan_dynamic', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isMoreSpecificThan_dynamic);
-      });
-      _ut.test('test_isMoreSpecificThan_indirectSupertype', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isMoreSpecificThan_indirectSupertype);
-      });
-      _ut.test('test_isMoreSpecificThan_self', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isMoreSpecificThan_self);
-      });
-      _ut.test('test_isSubtypeOf_directSubtype', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_directSubtype);
-      });
-      _ut.test('test_isSubtypeOf_dynamic', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_dynamic);
-      });
-      _ut.test('test_isSubtypeOf_indirectSubtype', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_indirectSubtype);
-      });
-      _ut.test('test_isSubtypeOf_interface', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_interface);
-      });
-      _ut.test('test_isSubtypeOf_mixins', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_mixins);
-      });
-      _ut.test('test_isSubtypeOf_object', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_object);
-      });
-      _ut.test('test_isSubtypeOf_self', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_self);
-      });
-      _ut.test('test_isSubtypeOf_typeArguments', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSubtypeOf_typeArguments);
-      });
-      _ut.test('test_isSupertypeOf_directSupertype', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSupertypeOf_directSupertype);
-      });
-      _ut.test('test_isSupertypeOf_dynamic', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSupertypeOf_dynamic);
-      });
-      _ut.test('test_isSupertypeOf_indirectSupertype', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSupertypeOf_indirectSupertype);
-      });
-      _ut.test('test_isSupertypeOf_interface', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSupertypeOf_interface);
-      });
-      _ut.test('test_isSupertypeOf_mixins', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSupertypeOf_mixins);
-      });
-      _ut.test('test_isSupertypeOf_object', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSupertypeOf_object);
-      });
-      _ut.test('test_isSupertypeOf_self', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_isSupertypeOf_self);
+      _ut.test('test_hashCode_element', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_hashCode_element);
+      });
+      _ut.test('test_hashCode_noElement', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_hashCode_noElement);
+      });
+      _ut.test('test_isSubtypeOf_baseCase_classFunction', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_baseCase_classFunction);
+      });
+      _ut.test('test_isSubtypeOf_baseCase_notFunctionType', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_baseCase_notFunctionType);
+      });
+      _ut.test('test_isSubtypeOf_baseCase_null', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_baseCase_null);
+      });
+      _ut.test('test_isSubtypeOf_baseCase_self', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_baseCase_self);
+      });
+      _ut.test('test_isSubtypeOf_namedParameters_isAssignable', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_isAssignable);
+      });
+      _ut.test('test_isSubtypeOf_namedParameters_isNotAssignable', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_isNotAssignable);
+      });
+      _ut.test('test_isSubtypeOf_namedParameters_namesDifferent', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_namesDifferent);
+      });
+      _ut.test('test_isSubtypeOf_namedParameters_orderOfParams', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_orderOfParams);
+      });
+      _ut.test('test_isSubtypeOf_namedParameters_orderOfParams2', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_orderOfParams2);
+      });
+      _ut.test('test_isSubtypeOf_namedParameters_orderOfParams3', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_orderOfParams3);
+      });
+      _ut.test('test_isSubtypeOf_namedParameters_sHasMoreParams', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_sHasMoreParams);
+      });
+      _ut.test('test_isSubtypeOf_namedParameters_tHasMoreParams', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_namedParameters_tHasMoreParams);
+      });
+      _ut.test('test_isSubtypeOf_normalParameters_isAssignable', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_normalParameters_isAssignable);
+      });
+      _ut.test('test_isSubtypeOf_normalParameters_isNotAssignable', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_normalParameters_isNotAssignable);
+      });
+      _ut.test('test_isSubtypeOf_normalParameters_sHasMoreParams', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_normalParameters_sHasMoreParams);
+      });
+      _ut.test('test_isSubtypeOf_normalParameters_tHasMoreParams', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_normalParameters_tHasMoreParams);
+      });
+      _ut.test('test_isSubtypeOf_optionalParameters_isAssignable', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_optionalParameters_isAssignable);
+      });
+      _ut.test('test_isSubtypeOf_optionalParameters_isNotAssignable', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_optionalParameters_isNotAssignable);
+      });
+      _ut.test('test_isSubtypeOf_optionalParameters_sHasMoreParams', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_optionalParameters_sHasMoreParams);
+      });
+      _ut.test('test_isSubtypeOf_optionalParameters_tHasMoreParams', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_optionalParameters_tHasMoreParams);
+      });
+      _ut.test('test_isSubtypeOf_returnType_sIsVoid', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_returnType_sIsVoid);
+      });
+      _ut.test('test_isSubtypeOf_returnType_tAssignableToS', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_returnType_tAssignableToS);
+      });
+      _ut.test('test_isSubtypeOf_returnType_tNotAssignableToS', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_returnType_tNotAssignableToS);
+      });
+      _ut.test('test_isSubtypeOf_wrongFunctionType_normal_named', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_wrongFunctionType_normal_named);
+      });
+      _ut.test('test_isSubtypeOf_wrongFunctionType_normal_optional', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_wrongFunctionType_normal_optional);
+      });
+      _ut.test('test_isSubtypeOf_wrongFunctionType_optional_named', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_isSubtypeOf_wrongFunctionType_optional_named);
+      });
+      _ut.test('test_setNamedParameterTypes', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_setNamedParameterTypes);
+      });
+      _ut.test('test_setNormalParameterTypes', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_setNormalParameterTypes);
+      });
+      _ut.test('test_setReturnType', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_setReturnType);
       });
       _ut.test('test_setTypeArguments', () {
-        final __test = new InterfaceTypeImplTest();
+        final __test = new FunctionTypeImplTest();
         runJUnitTest(__test, __test.test_setTypeArguments);
       });
-      _ut.test('test_substitute_equal', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_substitute_equal);
-      });
-      _ut.test('test_substitute_notEqual', () {
-        final __test = new InterfaceTypeImplTest();
-        runJUnitTest(__test, __test.test_substitute_notEqual);
+      _ut.test('test_substitute2_equal', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_substitute2_equal);
+      });
+      _ut.test('test_substitute2_notEqual', () {
+        final __test = new FunctionTypeImplTest();
+        runJUnitTest(__test, __test.test_substitute2_notEqual);
       });
     });
   }
 }
-class ClassElementImplTest extends EngineTestCase {
-  void test_allSupertypes_interface() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    InterfaceType typeObject = elementA.supertype;
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    elementC.interfaces = <InterfaceType> [typeB];
-    List<InterfaceType> supers = elementC.allSupertypes;
-    List<InterfaceType> types = new List<InterfaceType>();
-    types.addAll(supers);
-    JUnitTestCase.assertTrue(types.contains(typeA));
-    JUnitTestCase.assertTrue(types.contains(typeB));
-    JUnitTestCase.assertTrue(types.contains(typeObject));
-    JUnitTestCase.assertFalse(types.contains(typeC));
-  }
-  void test_allSupertypes_mixins() {
-    ClassElement elementA = ElementFactory.classElement2("A", []);
-    ClassElement elementB = ElementFactory.classElement("B", elementA.type, []);
-    ClassElementImpl elementC = (ElementFactory.classElement2("C", []) as ClassElementImpl);
-    InterfaceType typeObject = elementA.supertype;
-    InterfaceType typeA = elementA.type;
-    InterfaceType typeB = elementB.type;
-    InterfaceType typeC = elementC.type;
-    elementC.mixins = <InterfaceType> [typeB];
-    List<InterfaceType> supers = elementC.allSupertypes;
-    List<InterfaceType> types = new List<InterfaceType>();
-    types.addAll(supers);
-    JUnitTestCase.assertFalse(types.contains(typeA));
-    JUnitTestCase.assertTrue(types.contains(typeB));
-    JUnitTestCase.assertTrue(types.contains(typeObject));
-    JUnitTestCase.assertFalse(types.contains(typeC));
-  }
-  void test_lookUpGetter_declared() {
-    LibraryElementImpl library6 = ElementFactory.library(new AnalysisContextImpl(), "lib");
-    ClassElementImpl classA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    String getterName = "g";
-    PropertyAccessorElement getter = ElementFactory.getterElement(getterName, false, null);
-    classA.accessors = <PropertyAccessorElement> [getter];
-    ((library6.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA];
-    JUnitTestCase.assertSame(getter, classA.lookUpGetter(getterName, library6));
-  }
-  void test_lookUpGetter_inherited() {
-    LibraryElementImpl library7 = ElementFactory.library(new AnalysisContextImpl(), "lib");
-    ClassElementImpl classA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    String getterName = "g";
-    PropertyAccessorElement getter = ElementFactory.getterElement(getterName, false, null);
-    classA.accessors = <PropertyAccessorElement> [getter];
-    ClassElementImpl classB = (ElementFactory.classElement("B", classA.type, []) as ClassElementImpl);
-    ((library7.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA, classB];
-    JUnitTestCase.assertSame(getter, classB.lookUpGetter(getterName, library7));
-  }
-  void test_lookUpGetter_undeclared() {
-    LibraryElementImpl library8 = ElementFactory.library(new AnalysisContextImpl(), "lib");
-    ClassElementImpl classA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ((library8.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA];
-    JUnitTestCase.assertNull(classA.lookUpGetter("g", library8));
-  }
-  void test_lookUpMethod_declared() {
-    LibraryElementImpl library9 = ElementFactory.library(new AnalysisContextImpl(), "lib");
-    ClassElementImpl classA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    String methodName = "m";
-    MethodElement method = ElementFactory.methodElement(methodName, null, []);
-    classA.methods = <MethodElement> [method];
-    ((library9.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA];
-    JUnitTestCase.assertSame(method, classA.lookUpMethod(methodName, library9));
-  }
-  void test_lookUpMethod_inherited() {
-    LibraryElementImpl library10 = ElementFactory.library(new AnalysisContextImpl(), "lib");
-    ClassElementImpl classA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    String methodName = "m";
-    MethodElement method = ElementFactory.methodElement(methodName, null, []);
-    classA.methods = <MethodElement> [method];
-    ClassElementImpl classB = (ElementFactory.classElement("B", classA.type, []) as ClassElementImpl);
-    ((library10.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA, classB];
-    JUnitTestCase.assertSame(method, classB.lookUpMethod(methodName, library10));
-  }
-  void test_lookUpMethod_undeclared() {
-    LibraryElementImpl library11 = ElementFactory.library(new AnalysisContextImpl(), "lib");
-    ClassElementImpl classA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ((library11.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA];
-    JUnitTestCase.assertNull(classA.lookUpMethod("m", library11));
-  }
-  void test_lookUpSetter_declared() {
-    LibraryElementImpl library12 = ElementFactory.library(new AnalysisContextImpl(), "lib");
-    ClassElementImpl classA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    String setterName = "s";
-    PropertyAccessorElement setter = ElementFactory.setterElement(setterName, false, null);
-    classA.accessors = <PropertyAccessorElement> [setter];
-    ((library12.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA];
-    JUnitTestCase.assertSame(setter, classA.lookUpSetter(setterName, library12));
-  }
-  void test_lookUpSetter_inherited() {
-    LibraryElementImpl library13 = ElementFactory.library(new AnalysisContextImpl(), "lib");
-    ClassElementImpl classA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    String setterName = "s";
-    PropertyAccessorElement setter = ElementFactory.setterElement(setterName, false, null);
-    classA.accessors = <PropertyAccessorElement> [setter];
-    ClassElementImpl classB = (ElementFactory.classElement("B", classA.type, []) as ClassElementImpl);
-    ((library13.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA, classB];
-    JUnitTestCase.assertSame(setter, classB.lookUpSetter(setterName, library13));
-  }
-  void test_lookUpSetter_undeclared() {
-    LibraryElementImpl library14 = ElementFactory.library(new AnalysisContextImpl(), "lib");
-    ClassElementImpl classA = (ElementFactory.classElement2("A", []) as ClassElementImpl);
-    ((library14.definingCompilationUnit as CompilationUnitElementImpl)).types = <ClassElement> [classA];
-    JUnitTestCase.assertNull(classA.lookUpSetter("s", library14));
-  }
-  static dartSuite() {
-    _ut.group('ClassElementImplTest', () {
-      _ut.test('test_allSupertypes_interface', () {
-        final __test = new ClassElementImplTest();
-        runJUnitTest(__test, __test.test_allSupertypes_interface);
-      });
-      _ut.test('test_allSupertypes_mixins', () {
-        final __test = new ClassElementImplTest();
-        runJUnitTest(__test, __test.test_allSupertypes_mixins);
-      });
-      _ut.test('test_lookUpGetter_declared', () {
-        final __test = new ClassElementImplTest();
-        runJUnitTest(__test, __test.test_lookUpGetter_declared);
-      });
-      _ut.test('test_lookUpGetter_inherited', () {
-        final __test = new ClassElementImplTest();
-        runJUnitTest(__test, __test.test_lookUpGetter_inherited);
-      });
-      _ut.test('test_lookUpGetter_undeclared', () {
-        final __test = new ClassElementImplTest();
-        runJUnitTest(__test, __test.test_lookUpGetter_undeclared);
-      });
-      _ut.test('test_lookUpMethod_declared', () {
-        final __test = new ClassElementImplTest();
-        runJUnitTest(__test, __test.test_lookUpMethod_declared);
-      });
-      _ut.test('test_lookUpMethod_inherited', () {
-        final __test = new ClassElementImplTest();
-        runJUnitTest(__test, __test.test_lookUpMethod_inherited);
-      });
-      _ut.test('test_lookUpMethod_undeclared', () {
-        final __test = new ClassElementImplTest();
-        runJUnitTest(__test, __test.test_lookUpMethod_undeclared);
-      });
-      _ut.test('test_lookUpSetter_declared', () {
-        final __test = new ClassElementImplTest();
-        runJUnitTest(__test, __test.test_lookUpSetter_declared);
-      });
-      _ut.test('test_lookUpSetter_inherited', () {
-        final __test = new ClassElementImplTest();
-        runJUnitTest(__test, __test.test_lookUpSetter_inherited);
-      });
-      _ut.test('test_lookUpSetter_undeclared', () {
-        final __test = new ClassElementImplTest();
-        runJUnitTest(__test, __test.test_lookUpSetter_undeclared);
-      });
-    });
-  }
-}
-class TypeVariableTypeImplTest extends EngineTestCase {
-  void test_creation() {
-    JUnitTestCase.assertNotNull(new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("E"))));
-  }
-  void test_getElement() {
-    TypeVariableElementImpl element = new TypeVariableElementImpl(ASTFactory.identifier2("E"));
-    TypeVariableTypeImpl type = new TypeVariableTypeImpl(element);
-    JUnitTestCase.assertEquals(element, type.element);
-  }
-  void test_substitute_equal() {
-    TypeVariableElementImpl element = new TypeVariableElementImpl(ASTFactory.identifier2("E"));
-    TypeVariableTypeImpl type = new TypeVariableTypeImpl(element);
-    InterfaceTypeImpl argument = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("A")));
-    TypeVariableTypeImpl parameter = new TypeVariableTypeImpl(element);
-    JUnitTestCase.assertSame(argument, type.substitute2(<Type2> [argument], <Type2> [parameter]));
-  }
-  void test_substitute_notEqual() {
-    TypeVariableTypeImpl type = new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("E")));
-    InterfaceTypeImpl argument = new InterfaceTypeImpl.con1(new ClassElementImpl(ASTFactory.identifier2("A")));
-    TypeVariableTypeImpl parameter = new TypeVariableTypeImpl(new TypeVariableElementImpl(ASTFactory.identifier2("F")));
-    JUnitTestCase.assertSame(type, type.substitute2(<Type2> [argument], <Type2> [parameter]));
-  }
-  static dartSuite() {
-    _ut.group('TypeVariableTypeImplTest', () {
-      _ut.test('test_creation', () {
-        final __test = new TypeVariableTypeImplTest();
-        runJUnitTest(__test, __test.test_creation);
-      });
-      _ut.test('test_getElement', () {
-        final __test = new TypeVariableTypeImplTest();
-        runJUnitTest(__test, __test.test_getElement);
-      });
-      _ut.test('test_substitute_equal', () {
-        final __test = new TypeVariableTypeImplTest();
-        runJUnitTest(__test, __test.test_substitute_equal);
-      });
-      _ut.test('test_substitute_notEqual', () {
-        final __test = new TypeVariableTypeImplTest();
-        runJUnitTest(__test, __test.test_substitute_notEqual);
-      });
-    });
-  }
+class InterfaceTypeImpl_11 extends InterfaceTypeImpl {
+  InterfaceTypeImpl_11(ClassElement arg0) : super.con1(arg0);
+  bool isDartCoreFunction() => true;
 }
 main() {
+  FunctionTypeImplTest.dartSuite();
+  InterfaceTypeImplTest.dartSuite();
+  TypeVariableTypeImplTest.dartSuite();
   ClassElementImplTest.dartSuite();
   ElementLocationImplTest.dartSuite();
   ElementImplTest.dartSuite();
   LibraryElementImplTest.dartSuite();
-  FunctionTypeImplTest.dartSuite();
-  InterfaceTypeImplTest.dartSuite();
-  TypeVariableTypeImplTest.dartSuite();
 }