21 lines
749 B
HTML
21 lines
749 B
HTML
<!DOCTYPE html>
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<title>Layout Instability: outline doesn't contribute to layout shift</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 id="target" style="width: 300px; height: 300px; background: blue"></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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// Add outline for target. This should not generate a shift.
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target.style.outline = "10px solid blue";
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await waitForAnimationFrames(3);
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assert_equals(watcher.score, 0);
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}, "Outline.");
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</script>
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