blob: fc6f6e9f9230b68ce35b0236694d20f2eb64515f [file] [log] [blame]
// Copyright (c) 2012, 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.
// @dart = 2.9
library RequestAnimationFrameTest;
import 'dart:async';
import 'dart:html';
import 'package:expect/minitest.dart';
Future testOneShot() async {
final done = new Completer();
window.requestAnimationFrame(done.complete);
await done.future;
}
Future testTwoShot() async {
final done = new Completer();
window.requestAnimationFrame((timestamp1) {
window.requestAnimationFrame((timestamp2) {
// Not monotonic on Safari and IE.
// expect(timestamp2, greaterThan(timestamp1),
// reason: 'timestamps ordered');
done.complete();
});
});
await done.future;
}
// How do we test that a callback is never called? We can't wrap the uncalled
// callback with 'expectAsync'. Will request several frames and try
// cancelling the one that is not the last.
Future testCancel1() async {
final done = new Completer();
var frame1 = window.requestAnimationFrame((timestamp1) {
fail('Should have been cancelled');
});
var frame2 = window.requestAnimationFrame(done.complete);
window.cancelAnimationFrame(frame1);
await done.future;
}
Future testCancel2() async {
final done1 = new Completer();
final done2 = new Completer();
var frame1 = window.requestAnimationFrame(done1.complete);
var frame2 = window.requestAnimationFrame((timestamp2) {
fail('Should have been cancelled');
});
var frame3 = window.requestAnimationFrame(done2.complete);
window.cancelAnimationFrame(frame2);
await Future.wait([done1.future, done2.future]);
}
main() async {
await testOneShot();
await testTwoShot();
await testCancel1();
await testCancel2();
}