Fix for SearchEngine.searchMemberDeclarations() - search exact names.

pkg/analysis_server/test/services/refactoring/rename_class_member_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.services.refactoring.rename_class_member;
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/services/correction/status.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart';
@@ skipping 72 matching lines @@
     createRenameRefactoringAtString('test() {}');
     // check status
     refactoring.newName = 'newName';
     RefactoringStatus status = await refactoring.checkFinalConditions();
     assertRefactoringStatus(status, RefactoringProblemSeverity.ERROR,
         expectedMessage:
             "Class 'A' already declares method with name 'newName'.",
         expectedContextSearch: 'newName() {} // existing');
   }
 
+  test_checkFinalConditions_OK_dropSuffix() async {
+    indexTestUnit(r'''
+abstract class A {
+  void testOld();
+}
+class B implements A {
+  void testOld() {}
+}
+''');
+    createRenameRefactoringAtString('testOld() {}');
+    // check status
+    refactoring.newName = 'test';
+    RefactoringStatus status = await refactoring.checkFinalConditions();
+    assertRefactoringStatusOK(status);
+  }
+
   test_checkFinalConditions_OK_noShadow() async {
     indexTestUnit('''
 class A {
   int newName;
 }
 class B {
   test() {}
 }
 class C extends A {
   main() {
@@ skipping 753 matching lines @@
     // validate change
     return assertSuccessfulRefactoring('''
 class A<NewName> {
   NewName field;
   List<NewName> items;
   NewName method(NewName p) => null;
 }
 ''');
   }
 }