oncancel.html - mozsearch

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This WPT test may be referenced by the following Test IDs:
- /web-animations/interfaces/Animation/oncancel.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset=utf-8>

<title>Animation.oncancel</title>

<link rel="help" href="https://drafts.csswg.org/web-animations/#dom-animation-oncancel">

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

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

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

<body>

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

<script>

'use strict';

async_test(t => {

  const div = createDiv(t);

  const animation = div.animate({}, 100 * MS_PER_SEC);

  let finishedTimelineTime;

  animation.finished.then().catch(() => {

    finishedTimelineTime = animation.timeline.currentTime;

});

  animation.oncancel = t.step_func_done(event => {

    assert_equals(event.currentTime, null,

      'event.currentTime should be null');

    assert_times_equal(event.timelineTime, finishedTimelineTime,

      'event.timelineTime should equal to the animation timeline ' +

      'when finished promise is rejected');

});

  animation.cancel();

}, 'oncancel event is fired when animation.cancel() is called.');

</script>

</body>