pkg/unittest: test cleanup

pkg/unittest/test/nested_groups_setup_teardown_test.dart

 // Copyright (c) 2013, 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 unittestTest;
+
+import 'dart:async';
 import 'dart:isolate';
-import 'dart:async';
+
 import 'package:unittest/unittest.dart';
 
-part 'unittest_test_utils.dart';
+part 'utils.dart';
 
 var testName = 'nested groups setup/teardown';
 
 var testFunction = (_) {
   StringBuffer s = new StringBuffer();
   group('level 1', () {
     setUp(makeDelayedSetup(1, s));
     group('level 2', () {
       setUp(makeImmediateSetup(2, s));
       tearDown(makeDelayedTeardown(2, s));
@@ skipping 13 matching lines @@
     });
   });
   test('after nest', () {
     expect(s.toString(), "l1 U l2 U l4 U l5 U l6 D l4 D l2 D ");
   });
 };
 
 var expected = buildStatusString(2, 0, 0,
     'level 1 level 2 level 3 level 4 level 5 level 6 inner::'
     'after nest');