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