28 lines
988 B
HTML
28 lines
988 B
HTML
<!DOCTYPE html>
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<head>
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<title>Performance Paint Timing Test: FCP due to loaded video poster</title>
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</head>
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<body>
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<script src="../resources/utils.js"></script>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<video id="video" width="50" height="50"></video>
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<script>
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setup({"hide_test_state": true});
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promise_test(async t => {
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assert_implements(window.PerformancePaintTiming, "Paint Timing isn't supported.");
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await new Promise(r => window.addEventListener('load', r));
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await assertNoFirstContentfulPaint(t);
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const video = document.getElementById('video');
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const src = '../resources/circles.png';
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const image = new Image();
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image.src = src;
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video.setAttribute('poster', src);
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await new Promise(resolve => {
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image.onload = async () => resolve();
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})
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await assertFirstContentfulPaint(t);
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}, 'Video should become contentful when poster is loaded');
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</script>
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</body>
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</html>
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