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1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file | |
2 // for details. All rights reserved. Use of this source code is governed by a | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 | |
5 library custom_elements_method_clash; | |
6 | |
7 import 'dart:html'; | |
8 import 'package:unittest/unittest.dart'; | |
9 | |
10 class CustomElement extends HtmlElement { | |
11 factory CustomElement() => new Element.tag('x-custom'); | |
12 | |
13 CustomElement.created() : super.created() { | |
14 } | |
15 | |
16 // Try to clash with native 'appendChild' method. | |
17 void appendChild() { | |
18 throw 'Gotcha!'; | |
19 } | |
20 } | |
21 | |
22 main() { | |
23 document.registerElement('x-custom', CustomElement); | |
24 CustomElement custom = new CustomElement(); | |
25 document.body.children.add(custom); | |
26 | |
27 // Will call appendChild in JS. | |
28 custom.children.add(new DivElement()..text = 'Hello world!'); | |
29 | |
30 try { | |
31 custom.appendChild(); // Make sure method is not tree shaken. | |
32 fail('appendChild did not throw'); | |
33 } catch(e) { | |
34 expect(e, equals('Gotcha!')); | |
35 } | |
36 } | |
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