60 lines
2 KiB
HTML
60 lines
2 KiB
HTML
<!DOCTYPE html>
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<title>Verify that currentTime and playState are correct when animation is paused</title>
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<link rel="help" href="https://drafts.css-houdini.org/css-animationworklet/">
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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="/web-animations/testcommon.js"></script>
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<script src="common.js"></script>
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<div id="box"></div>
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<script>
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setup(setupAndRegisterTests, {explicit_done: true});
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function createAnimation() {
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const box = document.getElementById('box');
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const effect = new KeyframeEffect(box,
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{ transform: ['translateY(100px)', 'translateY(200px)'] },
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{ duration: 100, iterations: 1 }
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);
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return new WorkletAnimation('passthrough', effect);
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}
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async function setupAndRegisterTests() {
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await registerPassthroughAnimator();
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promise_test(async t => {
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const animation = createAnimation();
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animation.play();
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// Immediately pausing animation should freeze the current time at 0.
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animation.pause();
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assert_equals(animation.currentTime, 0);
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assert_equals(animation.playState, "paused");
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// Wait some time to ensure a paused animation actually freezes.
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await waitForNextFrame();
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assert_equals(animation.currentTime, 0);
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assert_equals(animation.playState, "paused");
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}, 'pausing an animation freezes its current time');
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promise_test(async t => {
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const animation = createAnimation();
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animation.pause();
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animation.play();
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// Allow one async animation frame to pass so that animation is running.
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await waitForAsyncAnimationFrames(1);
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assert_equals(animation.playState, "running");
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// Allow time to advance so that we have a non-zero current time.
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await waitForDocumentTimelineAdvance();
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const timelineTime = document.timeline.currentTime;
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assert_greater_than(animation.currentTime, 0);
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assert_times_equal(animation.currentTime, (timelineTime - animation.startTime));
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}, 'playing a paused animation should resume it');
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done();
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}
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</script>
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