зеркало из https://github.com/mozilla/gecko-dev.git
34 строки
1.1 KiB
HTML
34 строки
1.1 KiB
HTML
<!doctype html>
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<html>
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<head>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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</head>
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<body>
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<script>
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function busyWait(millis) {
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const start = performance.now();
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while (performance.now() < start + millis) {}
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}
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promise_test(async t => {
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const delay = 3000;
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const iframe = document.createElement('iframe');
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iframe.src = './resources/now_frame.html';
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document.body.appendChild(iframe);
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await new Promise(resolve => iframe.addEventListener('load', resolve));
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iframe.contentWindow.addEventListener('beforeunload', () => {
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busyWait(delay);
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});
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iframe.src = './resources/post.html';
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await new Promise(resolve => this.addEventListener('message', ({data}) => {
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if (data === 'done')
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resolve();
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}));
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const entry = iframe.contentWindow.performance.getEntriesByType('navigation')[0];
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assert_less_than(entry.fetchStart, delay);
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}, 'timeOrigin should be set after beforeunload');
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</script>
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</body>
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</html>
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