Port type_representation_test to work with kernel

Change-Id: Icfc60f741fd00386d781c1d6dd1a4b874478a1fb
Reviewed-on: https://dart-review.googlesource.com/48601
Reviewed-by: Sigmund Cherem <sigmund@google.com>

Author: johnniwinther

tests/compiler/dart2js/helpers/element_lookup.dart

@@ -0,0 +1,48 @@
+// Copyright (c) 2018, 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.
+
+import 'package:compiler/src/common_elements.dart' show ElementEnvironment;
+import 'package:compiler/src/elements/entities.dart';
+import 'package:compiler/src/elements/types.dart';
+import 'package:compiler/src/world.dart' show ClosedWorld;
+
+ClassEntity findClass(ClosedWorld closedWorld, String name) {
+  ElementEnvironment elementEnvironment = closedWorld.elementEnvironment;
+  ClassEntity cls =
+      elementEnvironment.lookupClass(elementEnvironment.mainLibrary, name);
+  cls ??= elementEnvironment.lookupClass(
+      closedWorld.commonElements.coreLibrary, name);
+  assert(cls != null, "Class '$name' not found.");
+  return cls;
+}
+
+MemberEntity findClassMember(
+    ClosedWorld closedWorld, String className, String memberName) {
+  ElementEnvironment elementEnvironment = closedWorld.elementEnvironment;
+  ClassEntity cls = findClass(closedWorld, className);
+  assert(cls != null, "Class '$className' not found.");
+  MemberEntity member = elementEnvironment.lookupClassMember(cls, memberName);
+  assert(member != null, "Member '$memberName' not found in $cls.");
+  return member;
+}
+
+MemberEntity findMember(ClosedWorld closedWorld, String name) {
+  ElementEnvironment elementEnvironment = closedWorld.elementEnvironment;
+  MemberEntity member = elementEnvironment.lookupLibraryMember(
+      elementEnvironment.mainLibrary, name);
+  member ??= elementEnvironment.lookupLibraryMember(
+      closedWorld.commonElements.coreLibrary, name);
+  assert(member != null, "Member '$name' not found.");
+  return member;
+}
+
+FunctionType findFunctionType(ClosedWorld closedWorld, String name) {
+  FunctionEntity function = findMember(closedWorld, name);
+  return closedWorld.elementEnvironment.getFunctionType(function);
+}
+
+DartType findFieldType(ClosedWorld closedWorld, String name) {
+  FieldEntity field = findMember(closedWorld, name);
+  return closedWorld.elementEnvironment.getFieldType(field);
+}

tests/compiler/dart2js/inference/list_tracer_test.dart

@@ -8,6 +8,7 @@ import 'package:compiler/src/commandline_options.dart';
 import 'package:expect/expect.dart';
 
 import 'type_mask_test_helper.dart';
+import '../helpers/element_lookup.dart';
 import '../memory_compiler.dart';
 
 String generateTest(String listAllocation) {

tests/compiler/dart2js/inference/map_tracer_test.dart

@@ -12,6 +12,7 @@ import 'package:compiler/src/world.dart';
 import 'package:expect/expect.dart';
 
 import 'type_mask_test_helper.dart';
+import '../helpers/element_lookup.dart';
 import '../memory_compiler.dart';
 
 String generateTest(String mapAllocation) {

tests/compiler/dart2js/inference/type_mask_test_helper.dart

@@ -4,9 +4,6 @@
 
 library type_mask_test_helper;
 
-import 'package:compiler/src/common_elements.dart' show ElementEnvironment;
-import 'package:compiler/src/elements/entities.dart'
-    show ClassEntity, MemberEntity;
 import 'package:compiler/src/types/types.dart';
 import 'package:compiler/src/world.dart' show ClosedWorld;
 
@@ -40,30 +37,3 @@ TypeMask interceptorOrComparable(ClosedWorld closedWorld,
         closedWorld);
   }
 }
-
-ClassEntity findClass(ClosedWorld closedWorld, String name) {
-  ElementEnvironment elementEnvironment = closedWorld.elementEnvironment;
-  ClassEntity cls =
-      elementEnvironment.lookupClass(elementEnvironment.mainLibrary, name);
-  assert(cls != null, "Class '$name' not found.");
-  return cls;
-}
-
-MemberEntity findClassMember(
-    ClosedWorld closedWorld, String className, String memberName) {
-  ElementEnvironment elementEnvironment = closedWorld.elementEnvironment;
-  ClassEntity cls =
-      elementEnvironment.lookupClass(elementEnvironment.mainLibrary, className);
-  assert(cls != null, "Class '$className' not found.");
-  MemberEntity member = elementEnvironment.lookupClassMember(cls, memberName);
-  assert(member != null, "Member '$memberName' not found in $cls.");
-  return member;
-}
-
-MemberEntity findMember(ClosedWorld closedWorld, String name) {
-  ElementEnvironment elementEnvironment = closedWorld.elementEnvironment;
-  MemberEntity member = elementEnvironment.lookupLibraryMember(
-      elementEnvironment.mainLibrary, name);
-  assert(member != null, "Member '$name' not found.");
-  return member;
-}