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29 lines
1.2 KiB
HTML
29 lines
1.2 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset=utf-8>
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<title>Largest Contentful Paint: observe image.</title>
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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/largest-contentful-paint-helpers.js"></script>
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</head>
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<body>
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<script>
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promise_test(async () => {
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assert_implements(window.LargestContentfulPaint,
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"LargestContentfulPaint is not implemented");
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const beforeLoad = performance.now();
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// 262 is the size of the animated PNG up until the first frame,
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// including the chunk that starts the second frame (indicating that
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// the first frame data is done).
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// The trickle pipe delays the response after the first frame by 1 second.
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const url = window.location.origin +
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`/images/anim-gr.png?pipe=trickle(262:d${delay_pipe_value})`;
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const entry = await load_and_observe(url);
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// anim-gr.png is 100 by 50.
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const size = 100 * 50;
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checkImage(entry, url, 'image_id', size, beforeLoad, ["animated"]);
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}, "Same origin animated image is observable and has a first frame.");
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</script>
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</body>
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</html>
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