Issue 24442. Fix for renaming library names with spaces.

pkg/analysis_server/test/services/refactoring/rename_library_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_library;
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart';
@@ skipping 53 matching lines @@
 library the.new.name;
 part 'part.dart';
 ''');
     assertFileChangeResult(
         '/part.dart',
         '''
 part of the.new.name;
 ''');
   }
 
+  test_createChange_hasWhitespaces() async {
+    Source unitSource = addSource(
+        '/part.dart',
+        '''
+part of my .  app;
+''');
+    indexTestUnit('''
+library my    . app;
+part 'part.dart';
+''');
+    index.index(
+        context, context.resolveCompilationUnit2(unitSource, testSource));
+    // configure refactoring
+    _createRenameRefactoring();
+    expect(refactoring.refactoringName, 'Rename Library');
+    expect(refactoring.elementKindName, 'library');
+    refactoring.newName = 'the.new.name';
+    // validate change
+    await assertSuccessfulRefactoring('''
+library the.new.name;
+part 'part.dart';
+''');
+    assertFileChangeResult(
+        '/part.dart',
+        '''
+part of the.new.name;
+''');
+  }
+
   void _createRenameRefactoring() {
     createRenameRefactoringForElement(testUnitElement.library);
   }
 }