Srujan Gaddam
3438b33dce
Change-Id: I8554e2e41d56df403d73b34e38636e5108773195 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/140648 Reviewed-by: Bob Nystrom <rnystrom@google.com>
44 lines
1.2 KiB
Dart
44 lines
1.2 KiB
Dart
// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library custom_elements_method_clash;
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import 'dart:async';
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import 'dart:html';
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import 'package:async_helper/async_minitest.dart';
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import 'utils.dart';
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class CustomElement extends HtmlElement {
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factory CustomElement() => new Element.tag('x-custom') as CustomElement;
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CustomElement.created() : super.created() {}
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// Try to clash with native 'appendChild' method.
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void appendChild() {
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throw 'Gotcha!';
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}
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}
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main() async {
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await customElementsReady;
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group('test', () {
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test('test', () {
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document.registerElement2('x-custom', {'prototype': CustomElement});
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CustomElement custom = new CustomElement();
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document.body!.children.add(custom);
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// Will call appendChild in JS.
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custom.children.add(new DivElement()..text = 'Hello world!');
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try {
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custom.appendChild(); // Make sure method is not tree shaken.
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fail('appendChild did not throw');
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} catch (e) {
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expect(e, equals('Gotcha!'));
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}
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});
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});
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}
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