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firefox/testing/web-platform/tests/paint-timing/fcp-only/fcp-ignore-from-subframe.html
Daniel Baumann 5e9a113729
Adding upstream version 140.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-25 09:37:52 +02:00

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HTML

<!DOCTYPE html>
<head>
<title>
Performance Paint Timing Test: Paints in the iframe should be reported in the iframe
and not in the top document
</title>
</head>
<body>
<script src="../resources/utils.js"></script>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
setup({"hide_test_state": true});
promise_test(async t => {
assert_implements(window.PerformancePaintTiming, "Paint Timing isn't supported.");
const iframe = document.createElement('iframe');
iframe.src = '../resources/subframe-painting.html';
document.body.appendChild(iframe);
await new Promise(resolve => window.addEventListener('message', e => {
if (e.data.entryType == "paint" && e.data.name == "first-contentful-paint")
resolve()
}));
await assertNoFirstContentfulPaint(t);
}, 'Parent frame should not fire own paint-timing events for subframes.');
</script>
</body>
</html>