Roll Observatory packages and add a roll script

packages/unittest/test/setup_test.dart

Index: packages/unittest/test/setup_test.dart
diff --git a/packages/unittest/test/setup_test.dart b/packages/unittest/test/setup_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..ba27b4432b5b650d48962116ff30d45f797cb49f
--- /dev/null
+++ b/packages/unittest/test/setup_test.dart
@@ -0,0 +1,27 @@
+// 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 unittest.setup_test;
+
+import 'package:unittest/unittest.dart';
+
+import 'package:metatest/metatest.dart';
+
+void main() => initTests(_test);
+
+void _test(message) {
+  initMetatest(message);
+
+  expectTestsPass('setup test', () {
+    group('a', () {
+      var hasSetup = false;
+      setUp(() {
+        hasSetup = true;
+      });
+      test('test', () {
+        expect(hasSetup, isTrue);
+      });
+    });
+  });
+}