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29 lines
928 B
HTML
29 lines
928 B
HTML
<!DOCTYPE HTML>
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<meta charset=utf-8>
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<title>LongTask Timing: long task in cross-origin sibling iframe</title>
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<body>
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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>
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async_test(t => {
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window.addEventListener('message', t.step_func(e => {
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assert_equals(e.data, 'longtask+cross-origin-unreachable+script+++');
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t.done();
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}));
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}, 'Performance longtask entries in parent are observable in child iframe.');
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</script>
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<iframe src="resources/subframe-observing-longtask.html"></iframe>
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<script>
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/* Create a cross-origin iframe that generates a long task. */
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const iframe = document.createElement('iframe');
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iframe.id = 'child-iframe-id';
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iframe.name = 'child-iframe-name';
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document.body.appendChild(iframe);
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iframe.src = 'http://www1.web-platform.test:8000/longtask-timing/resources/subframe-with-longtask.html';
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</script>
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</body>
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