41 lines
1.4 KiB
HTML
41 lines
1.4 KiB
HTML
<!DOCTYPE HTML>
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<meta charset=utf-8>
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<title>Element Timing: do NOT observe elements from same-origin iframes</title>
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<body>
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<style>
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body {
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margin: 0;
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}
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</style>
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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/element-timing-helpers.js"></script>
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<script>
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async_test((t) => {
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assert_implements(window.PerformanceElementTiming, "PerformanceElementTiming is not implemented");
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const observer = new PerformanceObserver(
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t.step_func_done((entryList) => {
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assert_unreached("Should not have received an entry!");
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})
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);
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observer.observe({entryTypes: ['element']});
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// We add the iframe during onload to be sure that the observer is registered
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// in time for it to observe the element timing.
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// TODO(npm): change observer to use buffered flag.
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window.onload = () => {
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// Add iframe with an image of width and height equal to 100.
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const iframe = document.createElement('iframe');
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iframe.src = 'resources/iframe-with-square.html';
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iframe.onload = () => {
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// After a short delay, assume that the entry was not dispatched to the
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// parent frame.
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t.step_timeout(() => {
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t.done();
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}, 100);
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}
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document.body.appendChild(iframe);
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};
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}, 'Element in child iframe is not observed, even if same-origin.');
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</script>
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</body>
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