75 lines
2.5 KiB
HTML
75 lines
2.5 KiB
HTML
<!DOCTYPE html>
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<meta charset=utf-8>
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<title>The current time of an animation</title>
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<link rel="help" href="https://drafts.csswg.org/web-animations/#the-current-time-of-an-animation">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="../../testcommon.js"></script>
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<script src="../../resources/timing-override.js"></script>
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<body>
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<div id="log"></div>
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<script>
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'use strict';
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test(t => {
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const animation =
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new Animation(new KeyframeEffect(createDiv(t), null, 100 * MS_PER_SEC),
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document.timeline);
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animation.play();
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assert_equals(animation.currentTime, 0,
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'Current time returns the hold time set when entering the play-pending ' +
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'state');
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}, 'The current time returns the hold time when set');
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promise_test(async t => {
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const animation =
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new Animation(new KeyframeEffect(createDiv(t), null, 100 * MS_PER_SEC),
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null);
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await animation.ready;
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assert_equals(animation.currentTime, null);
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}, 'The current time is unresolved when there is no associated timeline ' +
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'(and no hold time is set)');
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// FIXME: Test that the current time is unresolved when we have an inactive
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// timeline if we find a way of creating an inactive timeline!
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test(t => {
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const animation =
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new Animation(new KeyframeEffect(createDiv(t), null, 100 * MS_PER_SEC),
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document.timeline);
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animation.startTime = null;
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assert_equals(animation.currentTime, null);
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}, 'The current time is unresolved when the start time is unresolved ' +
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'(and no hold time is set)');
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test(t => {
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const animation =
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new Animation(new KeyframeEffect(createDiv(t), null, 100 * MS_PER_SEC),
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document.timeline);
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animation.playbackRate = 2;
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animation.startTime = document.timeline.currentTime - 25 * MS_PER_SEC;
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const timelineTime = document.timeline.currentTime;
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const startTime = animation.startTime;
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const playbackRate = animation.playbackRate;
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assert_times_equal(animation.currentTime,
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(timelineTime - startTime) * playbackRate,
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'Animation has a unresolved start time');
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}, 'The current time is calculated from the timeline time, start time and ' +
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'playback rate');
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promise_test(async t => {
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const animation = createDiv(t).animate(null, 100 * MS_PER_SEC);
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animation.playbackRate = 0;
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await animation.ready;
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await waitForAnimationFrames(1);
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assert_time_equals_literal(animation.currentTime, 0);
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}, 'The current time does not progress if playback rate is 0');
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</script>
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</body>
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