LayoutTests/imported/w3c/web-platform-tests/css/css-animations/CSSAnimation-pausing.tentative.html - WebKit - Git at Google

 <!doctype html>
 <meta charset=utf-8>
 <title>Pausing a CSSAnimation</title>
 <link rel="help"
       href="https://drafts.csswg.org/css-animations-2/#animation-play-state">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="support/testcommon.js"></script>
 <style>
 @keyframes anim {
   0% { margin-left: 0px }
   100% { margin-left: 10000px }
 }
 </style>
 <div id="log"></div>
 <script>
 'use strict';

 const getMarginLeft = cs => parseFloat(cs.marginLeft);

 promise_test(async t => {
   const div = addDiv(t);
   const cs = getComputedStyle(div);
   div.style.animation = 'anim 1000s paused';
   const animation = div.getAnimations()[0];
   assert_equals(getMarginLeft(cs), 0,
                 'Initial value of margin-left is zero');
   animation.play();

   await animation.ready;
   await waitForNextFrame();

   assert_greater_than(getMarginLeft(cs), 0,
                       'Playing value of margin-left is greater than zero');
 }, 'play() overrides animation-play-state');

 promise_test(async t => {
   const div = addDiv(t);
   const cs = getComputedStyle(div);
   div.style.animation = 'anim 1000s paused';
   const animation = div.getAnimations()[0];
   assert_equals(getMarginLeft(cs), 0,
                 'Initial value of margin-left is zero');

   animation.pause();
   div.style.animationPlayState = 'running';

   await animation.ready;
   await waitForNextFrame();

   assert_equals(cs.animationPlayState, 'running',
                 'animation-play-state is running');
   assert_equals(getMarginLeft(cs), 0,
                 'Paused value of margin-left is zero');
 }, 'pause() overrides animation-play-state');

 promise_test(async t => {
   const div = addDiv(t);
   const cs = getComputedStyle(div);
   div.style.animation = 'anim 1000s paused';
   const animation = div.getAnimations()[0];
   assert_equals(getMarginLeft(cs), 0,
                 'Initial value of margin-left is zero');
   animation.play();

   await animation.ready;

   div.style.animationPlayState = 'running';
   cs.animationPlayState; // Trigger style resolution
   await waitForNextFrame();

   assert_equals(cs.animationPlayState, 'running',
                 'animation-play-state is running');
   div.style.animationPlayState = 'paused';
   await animation.ready;

   assert_equals(cs.animationPlayState, 'paused',
                 'animation-play-state is paused');
   const previousAnimVal = getMarginLeft(cs);
   await waitForNextFrame();

   assert_equals(getMarginLeft(cs), previousAnimVal,
                 'Animated value of margin-left does not change when'
                 + ' paused by style');
 }, 'play() is overridden by later setting "animation-play-state: paused"');

 promise_test(async t => {
   const div = addDiv(t);
   const cs = getComputedStyle(div);
   div.style.animation = 'anim 1000s';
   const animation = div.getAnimations()[0];
   assert_equals(getMarginLeft(cs), 0,
                 'Initial value of margin-left is zero');

   // Set the specified style first. If implementations fail to
   // apply the style changes first, they will ignore the redundant
   // call to play() and fail to correctly override the pause style.
   div.style.animationPlayState = 'paused';
   animation.play();
   const previousAnimVal = getMarginLeft(cs);

   await animation.ready;
   await waitForNextFrame();

   assert_equals(cs.animationPlayState, 'paused',
                 'animation-play-state is paused');
   assert_greater_than(getMarginLeft(cs), previousAnimVal,
                       'Playing value of margin-left is increasing');
 }, 'play() flushes pending changes to animation-play-state first');

 promise_test(async t => {
   const div = addDiv(t);
   const cs = getComputedStyle(div);
   div.style.animation = 'anim 1000s paused';
   const animation = div.getAnimations()[0];
   assert_equals(getMarginLeft(cs), 0,
                 'Initial value of margin-left is zero');

   // Unlike the previous test for play(), since calling pause() is sticky,
   // we'll apply it even if the underlying style also says we're paused.
   //
   // We would like to test that implementations flush styles before running
   // pause() but actually there's no style we can currently set that will
   // change the behavior of pause(). That may change in the future
   // (e.g. if we introduce animation-timeline or animation-playback-rate etc.).
   //
   // For now this just serves as a sanity check that we do the same thing
   // even if we set style before calling the API.
   div.style.animationPlayState = 'running';
   animation.pause();
   const previousAnimVal = getMarginLeft(cs);

   await animation.ready;
   await waitForNextFrame();

   assert_equals(cs.animationPlayState, 'running',
                 'animation-play-state is running');
   assert_equals(getMarginLeft(cs), previousAnimVal,
                 'Paused value of margin-left does not change');
 }, 'pause() applies pending changes to animation-play-state first');
 // (Note that we can't actually test for this; see comment above, in test-body.)

 promise_test(async t => {
   const div = addDiv(t, { style: 'animation: anim 1000s' });
   const animation = div.getAnimations()[0];
   let readyPromiseRun = false;

   await animation.ready;

   div.style.animationPlayState = 'paused';
   assert_true(animation.pending && animation.playState === 'paused',
               'Animation is pause-pending');

   // Set current time
   animation.currentTime = 5 * MS_PER_SEC;
   assert_equals(animation.playState, 'paused',
                 'Animation is paused immediately after setting currentTime');
   assert_equals(animation.startTime, null,
                 'Animation startTime is unresolved immediately after ' +
                 'setting currentTime');
   assert_equals(animation.currentTime, 5 * MS_PER_SEC,
                 'Animation currentTime does not change when forcing a ' +
                 'pause operation to complete');

   // The ready promise should now be resolved. If it's not then test will
   // probably time out before anything else happens that causes it to resolve.
   await animation.ready;
 }, 'Setting the current time completes a pending pause');

 </script>
	<!doctype html>
	<meta charset=utf-8>
	<title>Pausing a CSSAnimation</title>
	<link rel="help"
	href="https://drafts.csswg.org/css-animations-2/#animation-play-state">
	<script src="/resources/testharness.js"></script>
	<script src="/resources/testharnessreport.js"></script>
	<script src="support/testcommon.js"></script>
	<style>
	@keyframes anim {
	0% { margin-left: 0px }
	100% { margin-left: 10000px }
	}
	</style>
	<div id="log"></div>
	<script>
	'use strict';

	const getMarginLeft = cs => parseFloat(cs.marginLeft);

	promise_test(async t => {
	const div = addDiv(t);
	const cs = getComputedStyle(div);
	div.style.animation = 'anim 1000s paused';
	const animation = div.getAnimations()[0];
	assert_equals(getMarginLeft(cs), 0,
	'Initial value of margin-left is zero');
	animation.play();

	await animation.ready;
	await waitForNextFrame();

	assert_greater_than(getMarginLeft(cs), 0,
	'Playing value of margin-left is greater than zero');
	}, 'play() overrides animation-play-state');

	promise_test(async t => {
	const div = addDiv(t);
	const cs = getComputedStyle(div);
	div.style.animation = 'anim 1000s paused';
	const animation = div.getAnimations()[0];
	assert_equals(getMarginLeft(cs), 0,
	'Initial value of margin-left is zero');

	animation.pause();
	div.style.animationPlayState = 'running';

	await animation.ready;
	await waitForNextFrame();

	assert_equals(cs.animationPlayState, 'running',
	'animation-play-state is running');
	assert_equals(getMarginLeft(cs), 0,
	'Paused value of margin-left is zero');
	}, 'pause() overrides animation-play-state');

	promise_test(async t => {
	const div = addDiv(t);
	const cs = getComputedStyle(div);
	div.style.animation = 'anim 1000s paused';
	const animation = div.getAnimations()[0];
	assert_equals(getMarginLeft(cs), 0,
	'Initial value of margin-left is zero');
	animation.play();

	await animation.ready;

	div.style.animationPlayState = 'running';
	cs.animationPlayState; // Trigger style resolution
	await waitForNextFrame();

	assert_equals(cs.animationPlayState, 'running',
	'animation-play-state is running');
	div.style.animationPlayState = 'paused';
	await animation.ready;

	assert_equals(cs.animationPlayState, 'paused',
	'animation-play-state is paused');
	const previousAnimVal = getMarginLeft(cs);
	await waitForNextFrame();

	assert_equals(getMarginLeft(cs), previousAnimVal,
	'Animated value of margin-left does not change when'
	+ ' paused by style');
	}, 'play() is overridden by later setting "animation-play-state: paused"');

	promise_test(async t => {
	const div = addDiv(t);
	const cs = getComputedStyle(div);
	div.style.animation = 'anim 1000s';
	const animation = div.getAnimations()[0];
	assert_equals(getMarginLeft(cs), 0,
	'Initial value of margin-left is zero');

	// Set the specified style first. If implementations fail to
	// apply the style changes first, they will ignore the redundant
	// call to play() and fail to correctly override the pause style.
	div.style.animationPlayState = 'paused';
	animation.play();
	const previousAnimVal = getMarginLeft(cs);

	await animation.ready;
	await waitForNextFrame();

	assert_equals(cs.animationPlayState, 'paused',
	'animation-play-state is paused');
	assert_greater_than(getMarginLeft(cs), previousAnimVal,
	'Playing value of margin-left is increasing');
	}, 'play() flushes pending changes to animation-play-state first');

	promise_test(async t => {
	const div = addDiv(t);
	const cs = getComputedStyle(div);
	div.style.animation = 'anim 1000s paused';
	const animation = div.getAnimations()[0];
	assert_equals(getMarginLeft(cs), 0,
	'Initial value of margin-left is zero');

	// Unlike the previous test for play(), since calling pause() is sticky,
	// we'll apply it even if the underlying style also says we're paused.
	//
	// We would like to test that implementations flush styles before running
	// pause() but actually there's no style we can currently set that will
	// change the behavior of pause(). That may change in the future
	// (e.g. if we introduce animation-timeline or animation-playback-rate etc.).
	//
	// For now this just serves as a sanity check that we do the same thing
	// even if we set style before calling the API.
	div.style.animationPlayState = 'running';
	animation.pause();
	const previousAnimVal = getMarginLeft(cs);

	await animation.ready;
	await waitForNextFrame();

	assert_equals(cs.animationPlayState, 'running',
	'animation-play-state is running');
	assert_equals(getMarginLeft(cs), previousAnimVal,
	'Paused value of margin-left does not change');
	}, 'pause() applies pending changes to animation-play-state first');
	// (Note that we can't actually test for this; see comment above, in test-body.)

	promise_test(async t => {
	const div = addDiv(t, { style: 'animation: anim 1000s' });
	const animation = div.getAnimations()[0];
	let readyPromiseRun = false;

	await animation.ready;

	div.style.animationPlayState = 'paused';
	assert_true(animation.pending && animation.playState === 'paused',
	'Animation is pause-pending');

	// Set current time
	animation.currentTime = 5 * MS_PER_SEC;
	assert_equals(animation.playState, 'paused',
	'Animation is paused immediately after setting currentTime');
	assert_equals(animation.startTime, null,
	'Animation startTime is unresolved immediately after ' +
	'setting currentTime');
	assert_equals(animation.currentTime, 5 * MS_PER_SEC,
	'Animation currentTime does not change when forcing a ' +
	'pause operation to complete');

	// The ready promise should now be resolved. If it's not then test will
	// probably time out before anything else happens that causes it to resolve.
	await animation.ready;
	}, 'Setting the current time completes a pending pause');

	</script>