Split unittest tests into separate test files.

pkg/unittest/test/unittest_setup_and_teardown_test.dart

Index: pkg/unittest/test/unittest_setup_and_teardown_test.dart
===================================================================
--- pkg/unittest/test/unittest_setup_and_teardown_test.dart	(revision 0)
+++ pkg/unittest/test/unittest_setup_and_teardown_test.dart	(revision 0)
@@ -0,0 +1,23 @@
+// 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');