Make it really green :) --- ensure that we register Dart type after the polyfill

pkg/web_components/test/interop2_test.dart

Index: pkg/web_components/test/interop2_test.dart
diff --git a/pkg/web_components/test/interop2_test.dart b/pkg/web_components/test/interop2_test.dart
index e84e8ceb171a8dc284ed27fdd576ce6529c91e59..88cc25cd6473f430cb08bd91096ad5d3422475e9 100644
--- a/pkg/web_components/test/interop2_test.dart
+++ b/pkg/web_components/test/interop2_test.dart
@@ -18,11 +18,11 @@ import 'package:web_components/polyfill.dart';
 
 main() {
   useHtmlConfiguration();
-  registerDartType('x-a', XAWrapper);
-  registerDartType('x-b', XBWrapper, extendsTag: 'div');
-  registerDartType('x-c', XCWrapper);
-
-  setUp(() => customElementsReady);
+  setUp(() => customElementsReady.then((_) {

[Jennifer Messerly, 2014/06/10 00:04:17]

won't this try and register elements repeatedly at each test?

perhaps:

final globalSetup = customElementsReady.then((_) {
  registerDartType('x-a', XAWrapper);
  registerDartType('x-b', XBWrapper, extendsTag: 'div');
  registerDartType('x-c', XCWrapper);
});

setUp(() => globalSetup);

[Siggi Cherem (dart-lang), 2014/06/10 00:12:13]

Yep, you are right. I'll send a fix shortly. I think this didn't fail in the
tests because we drop the subsequent register calls (we do report a
console.error in that case though).

+    registerDartType('x-a', XAWrapper);
+    registerDartType('x-b', XBWrapper, extendsTag: 'div');
+    registerDartType('x-c', XCWrapper);
+  }));
 
   test('interop is supported', () {
     expect(isSupported, isTrue);