Include additional information into RenameFeedback.

pkg/analysis_server/test/edit/refactoring_test.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.edit.refactoring;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/edit/edit_domain.dart';
 import 'package:analysis_server/src/protocol.dart';
@@ skipping 771 matching lines @@
   test_class_validateOnly() {
     addTestFile('''
 class Test {}
 main() {
   Test v;
 }
 ''');
     return getRefactoringResult(() {
       return sendRenameRequest('Test {}', 'NewName', true);
     }).then((result) {
+      RenameFeedback feedback = result.feedback;
       assertResultProblemsOK(result);
+      expect(feedback.elementKindName, 'class');
+      expect(feedback.oldName, 'Test');
       expect(result.change, isNull);
     });
   }
 
   test_class_warning() {
     addTestFile('''
 class Test {}
 main() {
   Test v;
 }
@@ skipping 249 matching lines @@
   }
 
   @override
   void setUp() {
     super.setUp();
     server.handlers = [new EditDomainHandler(server),];
     createProject();
     handler = new EditDomainHandler(server);
   }
 }