Tweaks for refactoring tests.

pkg/analysis_server/test/services/refactoring/abstract_refactoring.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.services.refactoring;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/correction/status.dart';
@@ skipping 81 matching lines @@
   }
 
   /**
    * Asserts that [refactoring] status is OK.
    */
   void assertRefactoringStatusOK(RefactoringStatus status) {
     assertRefactoringStatus(status, null);
   }
 
   /**
+   * Checks that all conditions are OK and the result of applying the [Change]
+   * to [testUnit] is [expectedCode].
+   */
+  Future assertSuccessfulRefactoring(String expectedCode) {
+    return assertRefactoringConditionsOK().then((_) {
+      return refactoring.createChange().then((SourceChange refactoringChange) {
+        this.refactoringChange = refactoringChange;
+        assertTestChangeResult(expectedCode);
+      });
+    });
+  }
+
+  /**
    * Asserts that [refactoringChange] contains a [FileEdit] for [testFile], and
    * it results the [expectedCode].
    */
   void assertTestChangeResult(String expectedCode) {
     // prepare FileEdit
     SourceFileEdit fileEdit = refactoringChange.getFileEdit(testFile);
     expect(fileEdit, isNotNull);
     // validate resulting code
     String actualCode = SourceEdit.applySequence(testCode, fileEdit.edits);
     expect(actualCode, expectedCode);
   }
 
   void indexTestUnit(String code) {
     resolveTestUnit(code);
     index.indexUnit(context, testUnit);
   }
 
   void indexUnit(String file, String code) {
     Source source = addSource(file, code);
     CompilationUnit unit = resolveLibraryUnit(source);
     index.indexUnit(context, unit);
   }
 
   void setUp() {
     super.setUp();
     index = createLocalMemoryIndex();
     searchEngine = new SearchEngineImpl(index);
   }
 }