| // Copyright (c) 2020, 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. |
| |
| import 'dart:html'; |
| |
| import 'package:expect/minitest.dart'; |
| |
| // Test that the dart:html API does not leak native jsdom methods: |
| // onfocus setter. |
| |
| main() { |
| test('test1', () { |
| document.body!.children.add(new Element.html(r''' |
| <div id='div1'> |
| Hello World! |
| </div>''')); |
| Element? e = document.querySelector('#div1'); |
| expect(e, isNotNull); |
| |
| expect(() { |
| confuse(e!).onfocus = null; |
| }, throwsNoSuchMethodError); |
| }); |
| } |
| |
| class Decoy { |
| void set onfocus(x) { |
| throw 'dead code'; |
| } |
| } |
| |
| confuse(x) => opaqueTrue() ? x : (opaqueTrue() ? new Object() : new Decoy()); |
| |
| /** Returns `true`, but in a way that confuses the compiler. */ |
| opaqueTrue() => true; // Expand as needed. |