visible-to-hidden.html (889B)
1 <!DOCTYPE html> 2 <title>Layout Instability: visibility:hidden</title> 3 <link rel="help" href="https://wicg.github.io/layout-instability/" /> 4 <div id="target" style="position: absolute; top: 0; width: 400px; height: 400px; background: blue;"></div> 5 <script src="/resources/testharness.js"></script> 6 <script src="/resources/testharnessreport.js"></script> 7 <script src="resources/util.js"></script> 8 <script> 9 10 promise_test(async () => { 11 const watcher = new ScoreWatcher; 12 13 // Wait for the initial render to complete. 14 await waitForAnimationFrames(2); 15 16 // Shift target and make hidden at the same time. Should not be reported! 17 document.querySelector("#target").style.top = '200px'; 18 document.querySelector("#target").style.visibility = 'hidden'; 19 20 await waitForAnimationFrames(2); 21 // No shift should be reported. 22 assert_equals(watcher.score, 0); 23 }, 'visible to hidden'); 24 25 </script>