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| (Empty) |
| 1 <!DOCTYPE html> | |
| 2 <script src="../resources/testharness.js"></script> | |
| 3 <script src="../resources/testharnessreport.js"></script> | |
| 4 | |
| 5 <iframe id=frame></iframe> | |
| 6 | |
| 7 <script> | |
| 8 var handle = async_test('Animation time should tick consistently across frames')
; | |
| 9 var baseTime = document.timeline.currentTime; | |
| 10 var frameBaseTime = frame.contentDocument.timeline.currentTime; | |
| 11 setTimeout(function() { | |
| 12 var start = performance.now(); | |
| 13 while (performance.now() - start < 30); | |
| 14 var delta = document.timeline.currentTime - baseTime; | |
| 15 | |
| 16 var start = performance.now(); | |
| 17 while (performance.now() - start < 30); | |
| 18 var frameDelta = frame.contentDocument.timeline.currentTime - frameBaseTime; | |
| 19 | |
| 20 handle.step(() => assert_equals(Math.round(delta), Math.round(frameDelta))); | |
| 21 handle.done(); | |
| 22 }); | |
| 23 </script> | |
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