| <!DOCTYPE html> |
| <html> |
| <head> |
| <script src="../../resources/js-test-pre.js"></script> |
| </head> |
| <body> |
| <script> |
| function busyWait(millis) { |
| let start = performance.now(); |
| while (performance.now() - start < millis) { } |
| } |
| |
| function firstRequestAnimationFrame() { |
| return new Promise(resolve => { |
| window.requestAnimationFrame(timestamp => { |
| debug("In firstRequestAnimationFrame()"); |
| busyWait(10); |
| resolve(timestamp); |
| }); |
| }); |
| } |
| |
| function secondRequestAnimationFrame() { |
| return new Promise(resolve => { |
| window.requestAnimationFrame(timestamp => { |
| debug("In secondRequestAnimationFrame()"); |
| resolve(timestamp); |
| }); |
| }); |
| } |
| |
| description("Tests the timestamps provided to requestAnimationFrame callbacks"); |
| window.jsTestIsAsync = true; |
| |
| (async () => { |
| let timestamps = await Promise.all([firstRequestAnimationFrame(), secondRequestAnimationFrame()]); |
| firstTimestamp = timestamps[0]; |
| secondTimestamp = timestamps[1]; |
| shouldBe("firstTimestamp", "secondTimestamp"); |
| finishJSTest(); |
| })(); |
| </script> |
| <script src="../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
