Support use of dill in TypeEnv tests

tests/compiler/dart2js/jsinterop/world_test.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library jsinterop.world_test;
 
 import 'package:expect/expect.dart';
 import 'package:async_helper/async_helper.dart';
-import 'package:compiler/src/elements/elements.dart' show ClassElement;
+import 'package:compiler/src/common_elements.dart';
+import 'package:compiler/src/elements/entities.dart' show ClassEntity;
 import 'package:compiler/src/elements/names.dart';
 import 'package:compiler/src/universe/selector.dart';
 import 'package:compiler/src/world.dart';
 import '../type_test_helper.dart';
 
 void main() {
   asyncTest(() async {
     await testClasses();
   });
 }
@@ skipping 49 matching lines @@
 newA() => new A(0);
 newB() => new B(1);
 newC() => new C(foo: 2);
 newD() => new D(foo: 3);
 newE() => new E(4);
 newF() => new F(5);
 """, mainSource: """
 import 'package:js/js.dart';
 
 $mainSource
-""", useMockCompiler: false);
-    Map<String, ClassElement> classEnvironment = <String, ClassElement>{};
+""", compileMode: CompileMode.memory);
+    Map<String, ClassEntity> classEnvironment = <String, ClassEntity>{};
 
-    ClassElement registerClass(ClassElement cls) {
+    ClassEntity registerClass(ClassEntity cls) {
       classEnvironment[cls.name] = cls;
       return cls;
     }
 
     ClosedWorld world = env.closedWorld;
-    ClassElement Object_ = registerClass(world.commonElements.objectClass);
-    ClassElement Interceptor =
+    ElementEnvironment elementEnvironment = world.elementEnvironment;
+    ClassEntity Object_ = registerClass(world.commonElements.objectClass);
+    ClassEntity Interceptor =
         registerClass(world.commonElements.jsInterceptorClass);
-    ClassElement JavaScriptObject =
+    ClassEntity JavaScriptObject =
         registerClass(world.commonElements.jsJavaScriptObjectClass);
-    ClassElement A = registerClass(env.getElement('A'));
-    ClassElement B = registerClass(env.getElement('B'));
-    ClassElement C = registerClass(env.getElement('C'));
-    ClassElement D = registerClass(env.getElement('D'));
-    ClassElement E = registerClass(env.getElement('E'));
-    ClassElement F = registerClass(env.getElement('F'));
+    ClassEntity A = registerClass(env.getClass('A'));
+    ClassEntity B = registerClass(env.getClass('B'));
+    ClassEntity C = registerClass(env.getClass('C'));
+    ClassEntity D = registerClass(env.getClass('D'));
+    ClassEntity E = registerClass(env.getClass('E'));
+    ClassEntity F = registerClass(env.getClass('F'));
 
     Selector nonExisting = new Selector.getter(const PublicName('nonExisting'));
 
-    Expect.equals(Interceptor.superclass, Object_);
-    Expect.equals(JavaScriptObject.superclass, Interceptor);
+    Expect.equals(elementEnvironment.getSuperClass(Interceptor), Object_);
+    Expect.equals(
+        elementEnvironment.getSuperClass(JavaScriptObject), Interceptor);
 
-    Expect.equals(A.superclass, JavaScriptObject);
-    Expect.equals(B.superclass, JavaScriptObject);
-    Expect.equals(C.superclass, JavaScriptObject);
-    Expect.equals(D.superclass, JavaScriptObject);
-    Expect.equals(E.superclass, Object_);
-    Expect.equals(F.superclass, Object_);
+    Expect.equals(elementEnvironment.getSuperClass(A), JavaScriptObject);
+    Expect.equals(elementEnvironment.getSuperClass(B), JavaScriptObject);
+    Expect.equals(elementEnvironment.getSuperClass(C), JavaScriptObject);
+    Expect.equals(elementEnvironment.getSuperClass(D), JavaScriptObject);
+    Expect.equals(elementEnvironment.getSuperClass(E), Object_);
+    Expect.equals(elementEnvironment.getSuperClass(F), Object_);
 
     Expect.isFalse(world.nativeData.isJsInteropClass(Object_));
     Expect.isTrue(world.nativeData.isJsInteropClass(A));
     Expect.isTrue(world.nativeData.isJsInteropClass(B));
     Expect.isTrue(world.nativeData.isJsInteropClass(C));
     Expect.isTrue(world.nativeData.isJsInteropClass(D));
     Expect.isFalse(world.nativeData.isJsInteropClass(E));
     Expect.isFalse(world.nativeData.isJsInteropClass(F));
 
     Expect.isFalse(world.nativeData.isAnonymousJsInteropClass(Object_));
     Expect.isFalse(world.nativeData.isAnonymousJsInteropClass(A));
     Expect.isFalse(world.nativeData.isAnonymousJsInteropClass(B));
     Expect.isTrue(world.nativeData.isAnonymousJsInteropClass(C));
     Expect.isTrue(world.nativeData.isAnonymousJsInteropClass(D));
     Expect.isFalse(world.nativeData.isAnonymousJsInteropClass(E));
     Expect.isFalse(world.nativeData.isAnonymousJsInteropClass(F));
 
     Expect.equals('', world.nativeData.getJsInteropClassName(A));
     Expect.equals('BClass', world.nativeData.getJsInteropClassName(B));
     Expect.equals('', world.nativeData.getJsInteropClassName(C));
     Expect.equals('', world.nativeData.getJsInteropClassName(D));
 
     for (String name in classEnvironment.keys) {
-      ClassElement cls = classEnvironment[name];
+      ClassEntity cls = classEnvironment[name];
       bool isInstantiated = false;
       if (directlyInstantiated.contains(name)) {
         isInstantiated = true;
         Expect.isTrue(
             world.isDirectlyInstantiated(cls),
             "Expected $name to be directly instantiated in `${mainSource}`:"
             "\n${world.dump(cls)}");
       }
       if (abstractlyInstantiated.contains(name)) {
         isInstantiated = true;
@@ skipping 47 matching lines @@
 
   await test('main() => newE();', directlyInstantiated: ['E']);
 
   await test('main() => newF();', directlyInstantiated: ['F']);
 
   await test('main() => [newD(), newE()];',
       directlyInstantiated: ['E'],
       abstractlyInstantiated: ['A', 'B', 'C', 'D'],
       indirectlyInstantiated: ['Object', 'Interceptor', 'JavaScriptObject']);
 }