| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| |
| #target { |
| width: 100px; |
| height: 100px; |
| background-color: black; |
| animation: foo linear 10s; |
| } |
| |
| @keyframes foo { |
| from { transform: "translateX(100px)" }; |
| to { transform: "none" }; |
| } |
| |
| </style> |
| </head> |
| <body> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <div id="target"></div> |
| |
| <script> |
| |
| function waitNFrames(numberOfFrames, continuation) |
| { |
| let elapsedFrames = 0; |
| (function rAFCallback() { |
| if (elapsedFrames++ >= numberOfFrames) |
| continuation(); |
| else |
| requestAnimationFrame(rAFCallback); |
| })(); |
| } |
| |
| async_test(t => { |
| const initialNumberOfTimelineInvalidations = internals.numberOfAnimationTimelineInvalidations(); |
| waitNFrames(3, () => { |
| assert_greater_than(internals.numberOfAnimationTimelineInvalidations(), initialNumberOfTimelineInvalidations, "There should be updates made to the timeline as an animation is set up."); |
| |
| document.getElementById("target").style.display = "none"; |
| |
| waitNFrames(2, () => { |
| const numberOfTimelineInvalidationsAfterInterruption = internals.numberOfAnimationTimelineInvalidations(); |
| requestAnimationFrame(() => { |
| assert_equals(internals.numberOfAnimationTimelineInvalidations(), numberOfTimelineInvalidationsAfterInterruption, "There should not be any updates made to the timeline after interrupting the single running animation."); |
| t.done(); |
| }); |
| }); |
| }); |
| }, "Interrupting an animation by setting 'display: none' should stop invalidating the animation timeline."); |
| |
| </script> |
| </body> |
| </html> |
