26 lines
899 B
HTML
26 lines
899 B
HTML
<!DOCTYPE html>
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<title>Layout Instability: sticky positioned layout no change</title>
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<link rel="help" href="https://wicg.github.io/layout-instability/" />
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="resources/util.js"></script>
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<div style="height: 3000px"></div>
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<div id="sticky" style="position: sticky; width: 200px; height: 300px; bottom: 0">
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<div style="will-change: transform; height: 3000px; background: yellow"></div>
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</div>
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<script>
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promise_test(async () => {
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const watcher = new ScoreWatcher;
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// Wait for the initial render to complete.
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await waitForAnimationFrames(2);
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// This doesn't change layout because the sticky element sticks to the bottom.
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sticky.style.marginTop = "-1000px";
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await waitForAnimationFrames(3);
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assert_equals(watcher.score, 0);
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}, 'Sticky layout no change.');
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</script>
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