Use shared MockSdk instances in resynthesize tests.

pkg/analyzer/test/src/task/dart_test.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyzer.test.src.task.dart_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 1058 matching lines @@
     TypeProvider typeProvider = outputs[TYPE_PROVIDER];
     expect(typeProvider, isNotNull);
     expect(typeProvider.boolType, isNotNull);
     expect(typeProvider.intType, isNotNull);
     expect(typeProvider.futureType, isNotNull);
   }
 }
 
 @reflectiveTest
 class BuildTypeProviderTaskTest_noAsync extends _AbstractDartTaskTest {
+  DartSdk createDartSdk() => new MockSdk(dartAsync: false);

[Brian Wilkerson, 2016/03/28 16:58:03]

Should this be a constant?

+
   void prepareAnalysisContext([AnalysisOptions options]) {
     AnalysisOptionsImpl newOptions = new AnalysisOptionsImpl();
     newOptions.enableAsync = false;
     super.prepareAnalysisContext(newOptions);
   }
 
-  void setUp() {
-    sdk = new MockSdk(dartAsync: false);
-    super.setUp();
-  }
-
   test_perform_noAsync() {
     expect(context, isNotNull);
     computeResult(AnalysisContextTarget.request, TYPE_PROVIDER,
         matcher: isBuildTypeProviderTask);
     // validate
     TypeProvider typeProvider = outputs[TYPE_PROVIDER];
     expect(typeProvider, isNotNull);
     expect(typeProvider.boolType, isNotNull);
     expect(typeProvider.intType, isNotNull);
     expect(typeProvider.futureType, isNotNull);
@@ skipping 3939 matching lines @@
   /**
    * Fill [errorListener] with [result] errors in the current [task].
    */
   void _fillErrorListener(ResultDescriptor<List<AnalysisError>> result) {
     List<AnalysisError> errors = task.outputs[result];
     expect(errors, isNotNull, reason: result.name);
     errorListener = new GatheringErrorListener();
     errorListener.addAll(errors);
   }
 }