Clean up the tests to be more maintainable.

sky/tests/framework/stocks.dart

Index: sky/tests/framework/stocks.dart
diff --git a/sky/tests/framework/stocks.dart b/sky/tests/framework/stocks.dart
index 69922b7fca67ec2b374c226562eff5d602619ff1..ac99398f2478d18e1fb961bdceeca824e08e42e4 100644
--- a/sky/tests/framework/stocks.dart
+++ b/sky/tests/framework/stocks.dart
@@ -9,16 +9,10 @@ import 'package:sky/widgets/widget.dart';
 
 import '../../examples/stocks2/lib/stock_app.dart';
 import '../resources/display_list.dart';
-import '../resources/third_party/unittest/unittest.dart';
-import '../resources/unit.dart';
-
-void main() {
-  initUnit();
 
+main() async {
   TestRenderView testRenderView = new TestRenderView();
-
-  test("launching stock app", () {
-    runApp(new StocksApp(), renderViewOverride: testRenderView);
-    new Future.microtask(testRenderView.checkFrame);
-  });
+  runApp(new StocksApp(), renderViewOverride: testRenderView);
+  await testRenderView.checkFrame();
+  testRenderView.endTest();
 }