Fix for web_component tests. Take 4

pkg/web_components/test/interop2_test.dart

-// 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.
-
-// TODO(sigmund): delete this file after issue 19322 is resolved.
-// This test is a trimmed down version of interop_test. interop_test is
-// currently failing in dart2js because of bug/19322, so we have this copy
-// that excludes the causes of failure to get some test coverage in .js.
-library web_components.interop2_test;
-
-import 'dart:html';
-import 'dart:async';
-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';
-
-final globalSetup = customElementsReady.then((_) {
-    registerDartType('x-a', XAWrapper);
-    registerDartType('x-b', XBWrapper, extendsTag: 'div');
-    registerDartType('x-c', XCWrapper);
-  });
-
-main() {
-  useHtmlConfiguration();
-  setUp(() => globalSetup);
-
-  test('interop is supported', () {
-    expect(isSupported, isTrue);
-  });
-
-  test('previously created elements are not upgraded', () {
-    var a = document.querySelector('x-a');
-    expect(a is HtmlElement, isTrue, reason: 'x-a is HtmlElement');
-    expect(a is XAWrapper, isFalse, reason: 'x-a should not be upgraded yet');
-    expect(_readX(a), 0);
-
-    var c = document.querySelector('x-c');
-    expect(c is HtmlElement, isTrue, reason: 'x-c is HtmlElement');
-    expect(c is XCWrapper, isFalse, reason: 'x-c should not be upgraded yet');
-    expect(_readX(c), null, reason: 'x-c has not been registered in JS yet');
-  });
-
-  test('events seen for anything created after registering Dart type', () {
-    context.callMethod('addA');
-    var list = document.querySelectorAll('x-a');
-    expect(list.length, 2);
-    var a = list[1];
-    expect(a is HtmlElement, isTrue, reason: 'x-a is HtmlElement');
-    expect(a is XAWrapper, isTrue, reason: 'x-a is upgraded to XAWrapper');
-    expect(a.x, 2);
-    expect(a.wrapperCount, 0);
-  });
-
-  test('events seen if Dart type is registered before registerElement', () {
-    var c = document.querySelector('x-c');
-    expect(c is XCWrapper, isFalse);
-    expect(_readX(c), null, reason: 'x-c has not been registered in JS yet');
-
-    context.callMethod('registerC');
-    c = document.querySelector('x-c');
-    expect(c is XCWrapper, isTrue);
-    expect(c.x, 3);
-    expect(c.wrapperCount, 1);
-
-    context.callMethod('addC');
-    var list = document.querySelectorAll('x-c');
-    expect(list.length, 2);
-    expect(list[0], c);
-    c = list[1];
-    expect(c is HtmlElement, isTrue, reason: 'x-c is HtmlElement');
-    expect(c is XCWrapper, isTrue, reason: 'x-c is upgraded to XCWrapper');
-    expect(c.x, 4);
-    expect(c.wrapperCount, 2);
-  });
-}
-int _count = 0;
-
-abstract class Wrapper {
-  int wrapperCount = _count++;
-  int get x => _readX(this);
-}
-
-_readX(e) => new JsObject.fromBrowserObject(e)['x'];
-
-class XAWrapper extends HtmlElement with Wrapper {
-  XAWrapper.created() : super.created();
-}
-
-class XBWrapper extends DivElement with Wrapper {
-  XBWrapper.created() : super.created();
-}
-
-class XCWrapper extends HtmlElement with Wrapper {
-  XCWrapper.created() : super.created();
-}