CSSAnimation-pausing.tentative.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-animations/CSSAnimation-pausing.tentative.html - WPT Dashboard Interop Dashboard

<!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';

promise_test(async t => {

  const div = addDiv(t);

  div.style.animation = 'anim 1000s paused';

  const animation = div.getAnimations()[0];

  animation.play();

  await animation.ready;

  await waitForNextFrame();

  assert_equals(

    animation.playState,

    'running',

    'Play state is running after calling play()'

);

  // Flip the animation-play-state back and forth to check it has no effect

  div.style.animationPlayState = 'running';

  getComputedStyle(div).animationPlayState;

  div.style.animationPlayState = 'paused';

  getComputedStyle(div).animationPlayState;

  assert_equals(

    animation.playState,

    'running',

    'Should still be running even after flipping the animation-play-state'

);

}, 'play() overrides animation-play-state');

promise_test(async t => {

  const div = addDiv(t);

  div.style.animation = 'anim 100s infinite paused';

  const animation = div.getAnimations()[0];

  animation.playbackRate = -1;

  animation.currentTime = -1;

  assert_throws_dom('InvalidStateError', () => {

    animation.play();

  }, 'Trying to play a reversed infinite animation should throw');

  assert_equals(

    animation.playState,

    'paused',

    'Animation should still be paused'

);

  animation.playbackRate = 1;

  div.style.animationPlayState = 'running';

  assert_equals(

    animation.playState,

    'running',

    'Changing the animation-play-state should play the animation'

);

}, 'play() does NOT override the animation-play-state if there was an error');

promise_test(async t => {

  const div = addDiv(t);

  div.style.animation = 'anim 1000s paused';

  const animation = div.getAnimations()[0];

  animation.pause();

  div.style.animationPlayState = 'running';

  getComputedStyle(div).animationPlayState;

  await animation.ready;

  await waitForNextFrame();

  assert_equals(animation.playState, 'paused', 'playState is paused ');

  // Flip the animation-play-state back and forth to check it has no effect

  div.style.animationPlayState = 'paused';

  getComputedStyle(div).animationPlayState;

  div.style.animationPlayState = 'running';

  getComputedStyle(div).animationPlayState;

  assert_equals(

    animation.playState,

    'paused',

    'Should still be paused even after flipping the animation-play-state'

);

}, 'pause() overrides animation-play-state');

promise_test(async t => {

  const div = addDiv(t);

  div.style.animation = 'anim 100s paused';

  const animation = div.getAnimations()[0];

  animation.reverse();

  assert_equals(

    animation.playState,

    'running',

    'Play state is running after calling reverse()'

);

  // Flip the animation-play-state back and forth to check it has no effect

  div.style.animationPlayState = 'running';

  getComputedStyle(div).animationPlayState;

  div.style.animationPlayState = 'paused';

  getComputedStyle(div).animationPlayState;

  assert_equals(

    animation.playState,

    'running',

    'Should still be running even after flipping the animation-play-state'

);

}, 'reverse() overrides animation-play-state when it starts playing the'

   + ' animation');

promise_test(async t => {

  const div = addDiv(t);

  div.style.animation = 'anim 100s';

  const animation = div.getAnimations()[0];

  animation.reverse();

  assert_equals(

    animation.playState,

    'running',

    'Play state is running after calling reverse()'

);

  div.style.animationPlayState = 'paused';

  getComputedStyle(div).animationPlayState;

  assert_equals(

    animation.playState,

    'paused',

    'Should be paused after changing the animation-play-state'

);

}, 'reverse() does NOT override animation-play-state if the animation is'

   + ' already running');

promise_test(async t => {

  const div = addDiv(t);

  div.style.animation = 'anim 100s';

  const animation = div.getAnimations()[0];

  animation.startTime = null;

  assert_equals(

    animation.playState,

    'paused',

    'Play state is paused after setting the start time to null'

);

  // Flip the animation-play-state back and forth to check it has no effect

  div.style.animationPlayState = 'paused';

  getComputedStyle(div).animationPlayState;

  div.style.animationPlayState = 'running';

  getComputedStyle(div).animationPlayState;

  assert_equals(

    animation.playState,

    'paused',

    'Should still be paused even after flipping the animation-play-state'

);

}, 'Setting the startTime to null overrides animation-play-state if the'

   + ' animation is already running');

promise_test(async t => {

  const div = addDiv(t);

  div.style.animation = 'anim 100s paused';

  const animation = div.getAnimations()[0];

  animation.startTime = document.timeline.currentTime;

  assert_equals(

    animation.playState,

    'running',

    'Play state is running after setting the start time to non-null'

);

  // Flip the animation-play-state back and forth to check it has no effect

  div.style.animationPlayState = 'running';

  getComputedStyle(div).animationPlayState;

  div.style.animationPlayState = 'paused';

  getComputedStyle(div).animationPlayState;

  assert_equals(

    animation.playState,

    'running',

    'Should still be running even after flipping the animation-play-state'

);

}, 'Setting the startTime to non-null overrides animation-play-state if the'

   + ' animation is paused');

promise_test(async t => {

  const div = addDiv(t);

  div.style.animation = 'anim 100s';

  const animation = div.getAnimations()[0];

  animation.startTime = document.timeline.currentTime;

  div.style.animationPlayState = 'paused';

  getComputedStyle(div).animationPlayState;

  assert_equals(

    animation.playState,

    'paused',

    'Should be paused after changing the animation-play-state'

);

}, 'Setting the startTime to non-null does NOT override the'

   + ' animation-play-state if the animation is already running');

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>