blob: 8c4f89240903d4fefaa7112d90bfdee77c30dc05 [file] [log] [blame]
// 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.