CSSTransition-canceling.tentative.html

mozilla-central/testing/web-platform/tests/css/css-transitions/CSSTransition-canceling.tentative.html

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Test Info:

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

<!doctype html>

<meta charset=utf-8>

<title>Canceling a CSS transition</title>

<link rel="help" href="https://drafts.csswg.org/css-transitions/#starting">

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

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

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

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

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

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

<script>

'use strict';

promise_test(async t => {

  const div = addDiv(t, { style: 'margin-left: 0px' });

  getComputedStyle(div).marginLeft;

  div.style.transition = 'margin-left 100s';

  div.style.marginLeft = '1000px';

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

  await transition.ready;

  await waitForFrame();

  assert_not_equals(getComputedStyle(div).marginLeft, '1000px',

                    'transform style is animated before canceling');

  transition.cancel();

  assert_equals(getComputedStyle(div).marginLeft, div.style.marginLeft,

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

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

promise_test(async t => {

  const div = addDiv(t, { style: 'margin-left: 0px' });

  getComputedStyle(div).marginLeft;

  div.style.transition = 'margin-left 100s';

  div.style.marginLeft = '1000px';

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

  await transition.ready;

  transition.cancel();

  assert_equals(getComputedStyle(div).marginLeft, '1000px',

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

  transition.play();

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

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

  await transition.ready;

  assert_equals(transition.playState, 'running',

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

}, 'After canceling a transition, it can still be re-used');

promise_test(async t => {

  const div = addDiv(t, { style: 'margin-left: 0px' });

  getComputedStyle(div).marginLeft;

  div.style.transition = 'margin-left 100s';

  div.style.marginLeft = '1000px';

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

  await transition.ready;

  transition.finish();

  transition.cancel();

  assert_equals(getComputedStyle(div).marginLeft, '1000px',

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

  transition.play();

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

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

  await transition.ready;

  assert_equals(transition.playState, 'running',

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

}, 'After canceling a finished transition, it can still be re-used');

test(t => {

  const div = addDiv(t, { style: 'margin-left: 0px' });

  getComputedStyle(div).marginLeft;

  div.style.transition = 'margin-left 100s';

  div.style.marginLeft = '1000px';

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

  transition.cancel();

  assert_equals(getComputedStyle(div).marginLeft, '1000px',

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

  // Trigger a change to a transition property and check that this

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

  div.style.transitionDuration = '200s';

  getComputedStyle(div).marginLeft;

  assert_equals(getComputedStyle(div).marginLeft, '1000px',

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

                + ' transition-duration');

  assert_equals(transition.playState, 'idle',

                'Transition is still idle after updating transition-duration');

}, 'After canceling a transition, updating transition properties doesn\'t make'

   + ' it live again');

promise_test(async t => {

  const div = addDiv(t, { style: 'margin-left: 0px' });

  getComputedStyle(div).marginLeft;

  div.style.transition = 'margin-left 100s';

  div.style.marginLeft = '1000px';

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

  await transition.ready;

  assert_equals(transition.playState, 'running');

  div.style.display = 'none';

  await waitForFrame();

  assert_equals(transition.playState, 'idle');

  assert_equals(getComputedStyle(div).marginLeft, '1000px');

}, 'Setting display:none on an element cancels its transitions');

promise_test(async t => {

  const parentDiv = addDiv(t);

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

  parentDiv.appendChild(childDiv);

  childDiv.setAttribute('style', 'margin-left: 0px');

  getComputedStyle(childDiv).marginLeft;

  childDiv.style.transition = 'margin-left 100s';

  childDiv.style.marginLeft = '1000px';

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

  await transition.ready;

  assert_equals(transition.playState, 'running');

  parentDiv.style.display = 'none';

  await waitForFrame();

  assert_equals(transition.playState, 'idle');

  assert_equals(getComputedStyle(childDiv).marginLeft, '1000px');

}, 'Setting display:none cancels transitions on a child element');

promise_test(async t => {

  const div = addDiv(t, { style: 'margin-left: 0px' });

  getComputedStyle(div).marginLeft;

  div.style.transition = 'margin-left 100s';

  div.style.marginLeft = '1000px';

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

  await transition.ready;

  assert_equals(transition.playState, 'running');

  // Set an unrecognized property value

  div.style.transitionProperty = 'none';

  getComputedStyle(div).marginLeft;

  await waitForFrame();

  assert_equals(transition.playState, 'idle');

  assert_equals(getComputedStyle(div).marginLeft, '1000px');

}, 'Removing a property from transition-property cancels transitions on that '+

   'property');

promise_test(async t => {

  const div = addDiv(t, { style: 'margin-left: 0px' });

  getComputedStyle(div).marginLeft;

  div.style.transition = 'margin-left 100s';

  div.style.marginLeft = '1000px';

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

  await transition.ready;

  assert_equals(transition.playState, 'running');

  div.style.transition = 'margin-left 10s -10s'; // combined duration is zero

  // Note that simply setting the combined duration to zero is not enough to

  // cancel the transition. We must also update the end value so that the,

  // "the end value of the running transition is not equal to the value of the

  // property in the after-change style" condition is true.

//

  // (And note that the zero combined duration is not strictly necessary to

  // cancel the original transition--but it does ensure another transition is

  // not generated in its place.)

  div.style.marginLeft = '2000px';

  getComputedStyle(div).marginLeft;

  await waitForFrame();

  assert_equals(transition.playState, 'idle');

  assert_equals(getComputedStyle(div).marginLeft, '2000px');

}, 'Setting zero combined duration');

promise_test(async t => {

  const div = addDiv(t, { style: 'margin-left: 0px' });

  getComputedStyle(div).marginLeft;

  div.style.transition = 'margin-left 100s';

  div.style.marginLeft = '1000px';

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

  await transition.ready;

  assert_equals(transition.playState, 'running');

  div.style.marginLeft = '2000px';

  getComputedStyle(div).marginLeft;

  await waitForFrame();

  assert_equals(transition.playState, 'idle');

}, 'Changing style to another interpolable value cancels the original ' +

   'transition');

promise_test(async t => {

  const div = addDiv(t, { style: 'margin-left: 0px' });

  getComputedStyle(div).marginLeft;

  div.style.transition = 'margin-left 100s';

  div.style.marginLeft = '1000px';

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

  await transition.ready;

  assert_equals(transition.playState, 'running');

  div.style.marginLeft = 'auto';

  getComputedStyle(div).marginLeft;

  await waitForFrame();

  assert_equals(div.getAnimations().length, 0,

                'There should be no transitions');

  assert_equals(transition.playState, 'idle');

}, 'An after-change style value can\'t be interpolated');

promise_test(async t => {

  const div = addDiv(t, { style: 'margin-left: 0px' });

  getComputedStyle(div).marginLeft;

  div.style.transition = 'margin-left 100s';

  div.style.marginLeft = '1000px';

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

  await transition.ready;

  assert_equals(transition.playState, 'running');

  div.style.marginLeft = '0px';

  getComputedStyle(div).marginLeft;

  await waitForFrame();

  assert_equals(transition.playState, 'idle');

}, 'Reversing a running transition cancels the original transition');

</script>