pkg/unittest: test cleanup

pkg/unittest/test/unittest_setup_and_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:isolate';
-import 'dart:async';
-import 'package:unittest/unittest.dart';
-
-part 'unittest_test_utils.dart';
-
-var testName = 'setup and teardown test';
-
-var testFunction = (TestConfiguration testConfig) {
-  group('a', () {
-    setUp(() { testConfig.setup = 'setup'; });
-    tearDown(() { testConfig.teardown = 'teardown'; });
-    test(testName, () {});
-  });
-};
-
-var expected = buildStatusString(1, 0, 0, 'a $testName', count: 0,
-    setup: 'setup', teardown: 'teardown');