36 lines
1.4 KiB
HTML
36 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 cross-origin iframes</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 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("We should not observe a cross origin element.");
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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 = t.step_func(() => {
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// Add a cross origin iframe with an image.
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const iframe = document.createElement('iframe');
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iframe.src = 'http://{{domains[www]}}:{{ports[http][1]}}'
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+ '/element-timing/resources/iframe-with-square.html';
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document.body.appendChild(iframe);
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iframe.onload = t.step_func(() => {
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t.step_timeout( () => {
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// After some wait, assume observer did not receive the entry, so the test passes.
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t.done();
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}, 100);
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});
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});
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}, 'Element from cross origin iframe is NOT observable.');
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</script>
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</body>
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