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<!doctype html>
<meta charset=utf-8>
<title>CSSAnimation.ready</title>
<!-- TODO: Add a more specific link for this once it is specified. -->
<link rel="help" href="https://drafts.csswg.org/css-animations-2/#cssanimation">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/testcommon.js"></script>
<style>
@keyframes abc {
to { transform: translate(10px) }
}
</style>
<div id="log"></div>
<script>
'use strict';
promise_test(async t => {
const div = addDiv(t);
div.style.animation = 'abc 100s paused';
const animation = div.getAnimations()[0];
const originalReadyPromise = animation.ready;
await animation.ready;
div.style.animationPlayState = 'running';
assert_not_equals(animation.ready, originalReadyPromise,
'After updating animation-play-state a new ready promise'
+ ' object is created');
}, 'A new ready promise is created when setting animation-play-state: running');
promise_test(async t => {
const div = addDiv(t);
// Set up pending animation
div.style.animation = 'abc 100s';
const animation = div.getAnimations()[0];
assert_true(animation.pending, 'Animation is initially pending');
const readyPromise = animation.ready;
// Cancel the animation and flush styles
div.style.animation = '';
getComputedStyle(div).animation;
await promise_rejects_dom(t, 'AbortError', readyPromise,
'ready promise is rejected with AbortError');
}, 'ready promise is rejected when an animation is canceled by resetting'
+ ' the animation property');
promise_test(async t => {
const div = addDiv(t);
// As before, but this time instead of removing all animations, simply update
// the list of animations. At least for Firefox, updating is a different
// code path.
// Set up pending animation
div.style.animation = 'abc 100s';
const animation = div.getAnimations()[0];
assert_true(animation.pending, 'Animation is initially pending');
const readyPromise = animation.ready;
// Update the animation and flush styles
div.style.animation = 'def 100s';
getComputedStyle(div).animation;
await promise_rejects_dom(t, 'AbortError', readyPromise,
'ready promise is rejected with AbortError');
}, 'ready promise is rejected when an animation is canceled by updating'
+ ' the animation property');
promise_test(async t => {
const div = addDiv(t, { style: 'animation: abc 100s' });
const animation = div.getAnimations()[0];
const originalReadyPromise = animation.ready;
await animation.ready;
div.style.animationPlayState = 'paused';
assert_not_equals(animation.ready, originalReadyPromise,
'A new Promise object is generated when setting'
+ ' animation-play-state: paused');
}, 'A new ready promise is created when setting animation-play-state: paused');
promise_test(async t => {
const div = addDiv(t, { style: 'animation: abc 100s' });
const animation = div.getAnimations()[0];
await animation.ready;
div.style.animationPlayState = 'paused';
const firstReadyPromise = animation.ready;
animation.pause();
assert_equals(animation.ready, firstReadyPromise,
'Ready promise objects are identical after redundant pause');
}, 'Pausing twice re-uses the same Promise');
</script>
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