CSSAnimation-canceling.tentative.html

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

<!doctype html>

<meta charset=utf-8>

<title>Canceling a CSS animation</title>

<!-- TODO: Add a more specific link for this once it is specified. -->

<link rel="help" href="https://drafts.csswg.org/css-animations-2/">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="support/testcommon.js"></script>

<style>

@keyframes translateAnim {

  to { transform: translate(100px) }

@keyframes marginLeftAnim {

  to { margin-left: 100px }

@keyframes marginLeftAnim100To200 {

  from { margin-left: 100px }

  to { margin-left: 200px }

</style>

<div id="log"></div>

<script>

'use strict';

promise_test(async t => {

  const div = addDiv(t, { style: 'animation: translateAnim 100s' });

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

  await animation.ready;

  assert_not_equals(getComputedStyle(div).transform, 'none',

                    'transform style is animated before canceling');

  animation.cancel();

  assert_equals(getComputedStyle(div).transform, 'none',

                'transform style is no longer animated after canceling');

}, 'Animated style is cleared after canceling a running CSS animation');

promise_test(async t => {

  const div = addDiv(t, { style: 'animation: translateAnim 100s forwards' });

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

  animation.finish();

  await animation.ready;

  assert_not_equals(getComputedStyle(div).transform, 'none',

                    'transform style is filling before canceling');

  animation.cancel();

  assert_equals(getComputedStyle(div).transform, 'none',

                'fill style is cleared after canceling');

}, 'Animated style is cleared after canceling a filling CSS animation');

test(t => {

  const div = addDiv(t, { style: 'animation: marginLeftAnim 100s linear' });

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

  animation.cancel();

  assert_equals(getComputedStyle(div).marginLeft, '0px',

                'margin-left style is not animated after canceling');

  animation.currentTime = 50 * 1000;

  assert_equals(getComputedStyle(div).marginLeft, '50px',

                'margin-left style is updated when canceled animation is'

                + ' seeked');

}, 'After canceling an animation, it can still be seeked');

promise_test(async t => {

  const div =

    addDiv(t, { style: 'animation: marginLeftAnim100To200 100s linear' });

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

  await animation.ready;

  animation.cancel();

  assert_equals(getComputedStyle(div).marginLeft, '0px',

                'margin-left style is not animated after canceling');

  animation.play();

  assert_equals(getComputedStyle(div).marginLeft, '100px',

                'margin-left style is animated after re-starting animation');

  await animation.ready;

  assert_equals(animation.playState, 'running',

                'Animation succeeds in running after being re-started');

}, 'After canceling an animation, it can still be re-used');

test(t => {

  const div =

    addDiv(t, { style: 'animation: marginLeftAnim100To200 100s linear' });

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

  animation.cancel();

  assert_equals(getComputedStyle(div).marginLeft, '0px',

                'margin-left style is not animated after canceling');

  // Trigger a change to some animation properties and check that this

  // doesn't cause the animation to become live again

  div.style.animationDuration = '200s';

  assert_equals(getComputedStyle(div).marginLeft, '0px',

                'margin-left style is still not animated after updating'

                + ' animation-duration');

  assert_equals(animation.playState, 'idle',

                'Animation is still idle after updating animation-duration');

}, 'After canceling an animation, updating animation properties doesn\'t make'

   + ' it live again');

test(t => {

  const div =

    addDiv(t, { style: 'animation: marginLeftAnim100To200 100s linear' });

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

  animation.cancel();

  assert_equals(getComputedStyle(div).marginLeft, '0px',

                'margin-left style is not animated after canceling');

  // Make some changes to animation-play-state and check that the

  // animation doesn't become live again. This is because it should be

  // possible to cancel an animation from script such that all future

  // changes to style are ignored.

  // Redundant change

  div.style.animationPlayState = 'running';

  assert_equals(animation.playState, 'idle',

                'Animation is still idle after a redundant change to'

                + ' animation-play-state');

  // Pause

  div.style.animationPlayState = 'paused';

  assert_equals(animation.playState, 'idle',

                'Animation is still idle after setting'

                + ' animation-play-state: paused');

  // Play

  div.style.animationPlayState = 'running';

  assert_equals(animation.playState, 'idle',

                'Animation is still idle after re-setting'

                + ' animation-play-state: running');

}, 'After canceling an animation, updating animation-play-state doesn\'t'

   + ' make it live again');

promise_test(async t => {

  const div = addDiv(t, { style: 'animation: translateAnim 10s both' });

  div.style.marginLeft = '0px';

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

  await animation.ready;

  assert_equals(animation.playState, 'running');

  div.style.animationName = 'none';

  flushComputedStyle(div);

  await waitForFrame();

  assert_equals(animation.playState, 'idle');

  assert_equals(getComputedStyle(div).marginLeft, '0px');

}, 'Setting animation-name to \'none\' cancels the animation');

promise_test(async t => {

  const div = addDiv(t, { style: 'animation: translateAnim 10s both' });

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

  await animation.ready;

  assert_equals(animation.playState, 'running');

  div.style.display = 'none';

  await waitForFrame();

  assert_equals(animation.playState, 'idle');

  assert_equals(getComputedStyle(div).marginLeft, '0px');

}, 'Setting display:none on an element cancel its animations');

promise_test(async t => {

  const parentDiv = addDiv(t);

  const childDiv  = document.createElement('div');

  parentDiv.appendChild(childDiv);

  childDiv.setAttribute('style', 'animation: translateAnim 10s both');

  flushComputedStyle(childDiv);

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

  await animation.ready;

  assert_equals(animation.playState, 'running');

  parentDiv.style.display = 'none';

  await waitForFrame();

  assert_equals(animation.playState, 'idle');

  assert_equals(getComputedStyle(childDiv).marginLeft, '0px');

}, 'Setting display:none on an ancestor element cancels animations on ' +

   'descendants');

</script>