Srujan Gaddam
4d4846c57a
Remaining tests that don't belong to any particular test suite, and only needed null asserts to be migrated. Change-Id: I05141d60e7b50653aa9633e14e832e91d9116408 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/140651 Reviewed-by: Bob Nystrom <rnystrom@google.com>
42 lines
1.1 KiB
Dart
42 lines
1.1 KiB
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file
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library transition_event_test;
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import 'dart:html';
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import 'dart:async';
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import 'package:expect/minitest.dart';
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Future testTransitionEnd() async {
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var element = new DivElement();
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document.body!.append(element);
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element.style.opacity = '0';
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element.style.width = '100px';
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element.style.height = '100px';
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element.style.background = 'red';
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element.style.transition = 'opacity .1s';
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final done = new Completer();
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new Timer(const Duration(milliseconds: 100), () {
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element.onTransitionEnd.first.then((e) {
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expect(e is TransitionEvent, isTrue);
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expect(e.propertyName, 'opacity');
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}).then(done.complete, onError: done.completeError);
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element.style.opacity = '1';
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});
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await done.future;
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}
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main() async {
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expect(CssStyleDeclaration.supportsTransitions, isTrue);
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if (CssStyleDeclaration.supportsTransitions) {
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await testTransitionEnd();
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}
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}
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