<!DOCTYPE HTML> <html> <head> <meta charset="utf-8" /> <title>This test validates the functionality of onresourcetimingbufferfull in resource timing.</title> <link rel="author" title="Intel" href="http://www.intel.com/" /> <link rel="help" href="https://www.w3.org/TR/resource-timing-2/#dom-performance-onresourcetimingbufferfull"/> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script src="resources/resource-loaders.js"></script> <script src="resources/buffer-full-utilities.js"></script> </head> <body> <script> promise_test(async () => { let bufferFullCount = 0; performance.addEventListener('resourcetimingbufferfull', e => { assert_equals(e.bubbles, false, "Event bubbles attribute is false"); bufferFullCount++; }); await fillUpTheBufferWithTwoResources(); // Overflow the buffer await load.script(scriptResources[2]); await waitForNextTask(); checkEntries(2); assert_equals(bufferFullCount, 1, 'onresourcetimingbufferfull should have been invoked once.'); }, "Test that a buffer full event does not bubble and that resourcetimingbufferfull is called only once per overflow"); </script> </body> </html>