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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 e318b9c486d6dd1b65cb4359330ab22af83db3c8..e84e8ceb171a8dc284ed27fdd576ce6529c91e59 100644
--- a/pkg/web_components/test/interop2_test.dart
+++ b/pkg/web_components/test/interop2_test.dart
@@ -14,6 +14,7 @@ import 'dart:js' show context, JsObject;
 import 'package:unittest/html_config.dart';
 import 'package:unittest/unittest.dart';
 import 'package:web_components/interop.dart';
+import 'package:web_components/polyfill.dart';
 
 main() {
   useHtmlConfiguration();
@@ -21,6 +22,8 @@ main() {
   registerDartType('x-b', XBWrapper, extendsTag: 'div');
   registerDartType('x-c', XCWrapper);
 
+  setUp(() => customElementsReady);
+
   test('interop is supported', () {
     expect(isSupported, isTrue);
   });