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Diffstat (limited to 'testing/web-platform/tests/layout-instability/contain-paint-fully-clipped.html')
| -rw-r--r-- | testing/web-platform/tests/layout-instability/contain-paint-fully-clipped.html | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/testing/web-platform/tests/layout-instability/contain-paint-fully-clipped.html b/testing/web-platform/tests/layout-instability/contain-paint-fully-clipped.html new file mode 100644 index 0000000000..3c0ec726b2 --- /dev/null +++ b/testing/web-platform/tests/layout-instability/contain-paint-fully-clipped.html @@ -0,0 +1,26 @@ +<!DOCTYPE html> +<title>Layout Instability: fully clipped by contain:paint</title> +<link rel="help" href="https://wicg.github.io/layout-instability/" /> +<div style="contain: paint; height: 0; position: relative"> + <div id="target" style="position: absolute; top: 0; width: 400px; height: 400px; background: blue"></div> +</div> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/util.js"></script> +<script> + +promise_test(async () => { + const watcher = new ScoreWatcher; + + // Wait for the initial render to complete. + await waitForAnimationFrames(2); + + // Shift target, for which no shift should be reported because it's hidden. + document.querySelector("#target").style.top = '200px'; + + await waitForAnimationFrames(2); + // No shift should be reported. + assert_equals(watcher.score, 0); +}, 'fully clipped by contain:paint'); + +</script> |