<!DOCTYPE html>
<meta charset=utf-8>
<title>Canceling an animation</title>
<link rel="help"
    href="https://drafts.csswg.org/web-animations/#canceling-an-animation-section">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/web-animations/testcommon.js"></script>
<script src="testcommon.js"></script>
<style>
.scroller {
  overflow: auto;
  height: 100px;
  width: 100px;
  will-change: transform;
}

.contents {
  height: 1000px;
  width: 100%;
}
</style>
<body>
<script>
'use strict';

promise_test(async t => {
  const animation = createScrollLinkedAnimation(t);
  // Wait for new animation frame which allows the timeline to compute new
  // current time.
  await waitForNextFrame();
  animation.play();
  animation.cancel();

  assert_equals(animation.startTime, null,
                'The start time of a canceled animation should be unresolved');
  assert_equals(animation.currentTime, null,
                'The hold time of a canceled animation should be unresolved');
}, 'Canceling an animation should cause its start time and hold time to be'
   + ' unresolved');

promise_test(async t => {
  const animation = createScrollLinkedAnimation(t);
  // Wait for new animation frame which allows the timeline to compute new
  // current time.
  await waitForNextFrame();
  animation.play();
  const retPromise = animation.ready.then(() => {
    assert_unreached('ready promise was fulfilled');
  }).catch(err => {
    assert_equals(err.name, 'AbortError',
                  'ready promise is rejected with AbortError');
  });

  animation.cancel();

  return retPromise;
}, 'A play-pending ready promise should be rejected when the animation is'
   + ' canceled');

promise_test(async t => {
  const animation = createScrollLinkedAnimation(t);
  // Wait for new animation frame which allows the timeline to compute new
  // current time.
  await waitForNextFrame();
  animation.play();
  await animation.ready;

  // Make it pause-pending
  animation.pause();

  // We need to store the original ready promise since cancel() will
  // replace it
  const originalPromise = animation.ready;
  animation.cancel();

  await promise_rejects_dom(t, 'AbortError', originalPromise,
                            'Cancel should abort ready promise');
}, 'A pause-pending ready promise should be rejected when the animation is'
   + ' canceled');

promise_test(async t => {
  const animation = createScrollLinkedAnimation(t);
  // Wait for new animation frame which allows the timeline to compute new
  // current time.
  await waitForNextFrame();
  animation.play();
  animation.cancel();
  const promiseResult = await animation.ready;
  assert_equals(promiseResult, animation);
}, 'When an animation is canceled, it should create a resolved Promise');

promise_test(async t => {
  const animation = createScrollLinkedAnimation(t);
  // Wait for new animation frame which allows the timeline to compute new
  // current time.
  await waitForNextFrame();
  animation.play();
  const promise = animation.ready;
  animation.cancel();
  assert_not_equals(animation.ready, promise);
  promise_rejects_dom(t, 'AbortError', promise,
                      'Cancel should abort ready promise');
}, 'The ready promise should be replaced when the animation is canceled');

promise_test(async t => {
  const animation = createScrollLinkedAnimation(t);
  // Wait for new animation frame which allows the timeline to compute new
  // current time.
  await waitForNextFrame();
  assert_equals(animation.playState, 'idle',
                'The animation should be initially idle');

  animation.finished.then(t.step_func(() => {
    assert_unreached('Finished promise should not resolve');
  }), t.step_func(() => {
    assert_unreached('Finished promise should not reject');
  }));

  animation.cancel();

  return waitForAnimationFrames(3);
}, 'The finished promise should NOT be rejected if the animation is already'
   + ' idle');

promise_test(async t => {
  const animation = createScrollLinkedAnimation(t);
  // Wait for new animation frame which allows the timeline to compute new
  // current time.
  await waitForNextFrame();
  assert_equals(animation.playState, 'idle',
                'The animation should be initially idle');

  animation.oncancel = t.step_func(() => {
    assert_unreached('Cancel event should not be fired');
  });

  animation.cancel();

  return waitForAnimationFrames(3);
}, 'The cancel event should NOT be fired if the animation is already idle');

promise_test(async t => {
  const animation = createScrollLinkedAnimation(t);
  // Wait for new animation frame which allows the timeline to compute new
  // current time.
  await waitForNextFrame();
  animation.play();
  animation.effect.target.remove();

  const eventWatcher = new EventWatcher(t, animation, 'cancel');

  await animation.ready;
  animation.cancel();

  await eventWatcher.wait_for('cancel');

  assert_equals(animation.effect.target.parentNode, null,
      'cancel event should be fired for the animation on an orphaned element');
}, 'Canceling an animation should fire cancel event on orphaned element');

promise_test(async t => {
  const animation = createScrollLinkedAnimation(t);
  const scroller = animation.timeline.source;

  // Wait for new animation frame which allows the timeline to compute new
  // current time.
  await waitForNextFrame();
  animation.play();
  await animation.ready;

  // Make the scroll timeline inactive.
  scroller.style.overflow = 'visible';
  scroller.scrollTop;
  await waitForNextFrame();
  assert_equals(animation.timeline.currentTime, null,
                'Sanity check the timeline is inactive.');
  animation.cancel();
  assert_equals(animation.startTime, null,
                'The start time of a canceled animation should be unresolved');
  assert_equals(animation.currentTime, null,
              'The current time of a canceled animation should be unresolved');
}, 'Canceling an animation with inactive timeline should cause its start time'
   + ' and hold time to be unresolved');

promise_test(async t => {
  const animation = createScrollLinkedAnimation(t);
  const scroller = animation.timeline.source;

  // Wait for new animation frame which allows the timeline to compute new
  // current time.
  await waitForNextFrame();
  animation.play();
  await animation.ready;

  // Make the scroll timeline inactive.
  scroller.style.overflow = 'visible';
  scroller.scrollTop;
  await waitForNextFrame();
  assert_equals(animation.timeline.currentTime, null,
                'Sanity check the timeline is inactive.');

  const eventWatcher = new EventWatcher(t, animation, 'cancel');
  animation.cancel();
  const cancelEvent = await eventWatcher.wait_for('cancel');

  assert_equals(cancelEvent.currentTime, null,
      'event.currentTime should be unresolved when the timeline is inactive.');
  assert_equals(cancelEvent.timelineTime, null,
      'event.timelineTime should be unresolved when the timeline is inactive');
}, 'oncancel event is fired when the timeline is inactive.');

</script>
</body>
