45 lines
1.6 KiB
HTML
45 lines
1.6 KiB
HTML
<!DOCTYPE html>
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<title>Basic use of Worklet Animation</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="target"></div>
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<script>
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promise_test(async t => {
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await registerConstantLocalTimeAnimator(500);
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const effect = new KeyframeEffect(target, [{ opacity: 0 }], { duration: 1000 });
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const animation = new WorkletAnimation('constant_time', effect);
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animation.play();
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// wait until local times are synced back to the main thread.
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await waitForAnimationFrameWithCondition(_ => {
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return getComputedStyle(target).opacity != '1';
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});
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assert_equals(getComputedStyle(target).opacity, "0.5");
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animation.cancel();
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}, "A running worklet animation should output values at specified local time.");
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promise_test(async t => {
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await registerConstantLocalTimeAnimator(500);
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const effect = new KeyframeEffect(target, [{ opacity: 0 }], { duration: 1000 });
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const animation = new WorkletAnimation('constant_time', effect);
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animation.play();
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await waitForAnimationFrameWithCondition(_=> {
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return animation.playState == "running"
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});
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const prevCurrentTime = animation.currentTime;
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animation.play();
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assert_equals(animation.playState, "running");
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assert_equals(animation.currentTime, prevCurrentTime)
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animation.cancel();
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}, "Playing a running animation should be a no-op.");
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</script>
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