More fixes for failures on the Windows bot

pkg/analysis_server/test/services/index/local_file_index_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.src.index.local_file_index;
 
 import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analysis_server/src/services/index/local_file_index.dart';
 import 'package:unittest/unittest.dart';
 
+import '../../utils.dart';
+
 main() {
-  groupSep = ' | ';
+  initializeTestEnvironment();
   test('createLocalFileIndex', () {
     Index index = createLocalFileIndex();
     expect(index, isNotNull);
     index.clear();
   });
 }