Fix for starting 'Rename LibraryElement' refactoring.

pkg/analysis_server/test/edit/refactoring_test.dart

Index: pkg/analysis_server/test/edit/refactoring_test.dart
diff --git a/pkg/analysis_server/test/edit/refactoring_test.dart b/pkg/analysis_server/test/edit/refactoring_test.dart
index d987a6b3b1558d18585029c07032c16d1d0575de..24b8df29e614a0241b5a00af2445338ca2919128 100644
--- a/pkg/analysis_server/test/edit/refactoring_test.dart
+++ b/pkg/analysis_server/test/edit/refactoring_test.dart
@@ -1271,6 +1271,39 @@ main() {
     });
   }
 
+  test_library_libraryDirective() {
+    addTestFile('''
+library aaa.bbb.ccc;
+''');
+    return assertSuccessfulRefactoring(() {
+      return sendRenameRequest('library aaa', 'my.new_name');
+    }, '''
+library my.new_name;
+''');
+  }
+
+  test_library_libraryDirective_name() {
+    addTestFile('''
+library aaa.bbb.ccc;
+''');
+    return assertSuccessfulRefactoring(() {
+      return sendRenameRequest('aaa', 'my.new_name');
+    }, '''
+library my.new_name;
+''');
+  }
+
+  test_library_libraryDirective_nameDot() {
+    addTestFile('''
+library aaa.bbb.ccc;
+''');
+    return assertSuccessfulRefactoring(() {
+      return sendRenameRequest('.bbb', 'my.new_name');
+    }, '''
+library my.new_name;
+''');
+  }
+
   test_localVariable() {
     addTestFile('''
 main() {