36 lines
1.2 KiB
HTML
36 lines
1.2 KiB
HTML
<!DOCTYPE html>
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<title>Layout Instability: multi clip visual rect</title>
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<link rel="help" href="https://wicg.github.io/layout-instability/" />
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<style>
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body { margin: 0; }
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#outer { width: 200px; height: 600px; overflow: hidden; }
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#inner { width: 300px; height: 150px; overflow: hidden; }
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#j { position: relative; width: 300px; height: 600px; background: blue; }
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</style>
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<div id='outer'><div id='inner'><div id='j'></div></div></div>
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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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<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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document.querySelector("#j").style.top = "-200px";
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// Note that, while the element moves up 200px, its visibility is
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// clipped at 0px,150px height, so the additional 200px of vertical
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// move distance is not included in the score.
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// (clip width 200) * (clip height 150)
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const expectedScore = computeExpectedScore(200 * 150, 200);
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await watcher.promise;
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assert_equals(watcher.score, expectedScore);
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}, "Multi clip visual rect.");
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</script>
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