diff options
Diffstat (limited to '')
| -rw-r--r-- | testing/web-platform/tests/layout-instability/fixed-position-move.html | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/testing/web-platform/tests/layout-instability/fixed-position-move.html b/testing/web-platform/tests/layout-instability/fixed-position-move.html new file mode 100644 index 0000000000..877c2ba4b3 --- /dev/null +++ b/testing/web-platform/tests/layout-instability/fixed-position-move.html @@ -0,0 +1,27 @@ +<!DOCTYPE html> +<title>Layout Instability: movement of fixed position</title> +<link rel="help" href="https://wicg.github.io/layout-instability/" /> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/util.js"></script> +<div id="target" style="position: fixed; top: 100px; width: 300px; height: 200px; background: yellow"> +</div> +<script> +promise_test(async () => { + const watcher = new ScoreWatcher; + + // Wait for the initial render to complete. + await waitForAnimationFrames(2); + + // Modify the position of the div. + target.style.top = '200px'; + + const expectedScore = computeExpectedScore(300 * (200 + 100), 100); + + // Observer fires after the frame is painted. + assert_equals(watcher.score, 0); + await watcher.promise; + assert_equals(watcher.score, expectedScore); +}, 'Movement of fixed position'); + +</script> |