blob: b4a5ca36b51d6f4618991092447eef1d1a5650bd [file] [log] [blame]
// @dart = 2.9
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.