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Diffstat (limited to 'testing/web-platform/tests/layout-instability/sticky-layout-no-change.html')
| -rw-r--r-- | testing/web-platform/tests/layout-instability/sticky-layout-no-change.html | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/testing/web-platform/tests/layout-instability/sticky-layout-no-change.html b/testing/web-platform/tests/layout-instability/sticky-layout-no-change.html new file mode 100644 index 0000000000..8f3b2cf373 --- /dev/null +++ b/testing/web-platform/tests/layout-instability/sticky-layout-no-change.html @@ -0,0 +1,26 @@ +<!DOCTYPE html> +<title>Layout Instability: sticky positioned layout no change</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 style="height: 3000px"></div> +<div id="sticky" style="position: sticky; width: 200px; height: 300px; bottom: 0"> + <div style="will-change: transform; height: 3000px; background: yellow"></div> +</div> +<script> + +promise_test(async () => { + const watcher = new ScoreWatcher; + + // Wait for the initial render to complete. + await waitForAnimationFrames(2); + + // This doesn't change layout because the sticky element sticks to the bottom. + sticky.style.marginTop = "-1000px"; + + await waitForAnimationFrames(3); + assert_equals(watcher.score, 0); +}, 'Sticky layout no change.'); + +</script> |