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49 lines
2.2 KiB
HTML
49 lines
2.2 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head onload>
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<meta charset="utf-8" />
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<title>This test validates that synchronously adding entries in onresourcetimingbufferfull callback results in these entries being properly handled.</title>
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<link rel="help" href="http://www.w3.org/TR/resource-timing/#performanceresourcetiming"/>
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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/buffer-full-utilities.js"></script>
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</head>
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<body>
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<script>
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const resource_timing_buffer_size = 1;
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setup(() => {
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// Get the browser into a consistent state.
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clearBufferAndSetSize(resource_timing_buffer_size);
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performance.addEventListener('resourcetimingbufferfull', () => { assert_unreached("resourcetimingbufferfull should not fire")});
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});
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let overflowTheBuffer = () => {
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// These resources overflow the entry buffer, and go into the secondary buffer.
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xhrScript('resources/empty.js?xhr2');
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xhrScript('resources/empty.js?xhr3');
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performance.clearResourceTimings();
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performance.setResourceTimingBufferSize(3);
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xhrScript('resources/empty.js?xhr4');
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window.entriesAfterAddition = performance.getEntriesByType('resource');
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};
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let testThatBufferContainsTheRightResources = () => {
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let entries = performance.getEntriesByType('resource');
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assert_equals(entries.length, 3,
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'the last 3 resources should be in the buffer, since the first one was cleared');
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assert_true(entries[0].name.includes('empty.js?xhr2'), "empty.js?xhr2 is in the entries buffer");
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assert_true(entries[1].name.includes('empty.js?xhr3'), "empty.js?xhr3 is in the entries buffer");
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assert_true(entries[2].name.includes('empty.js?xhr4'), "empty.js?xhr4 is in the entries buffer");
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assert_equals(entriesAfterAddition.length, 0, "No entries should have been added to the primary buffer before the task to 'fire a buffer full event'.");
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};
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promise_test(async () => {
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await fillUpTheBufferWithSingleResource("resources/empty.js");
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overflowTheBuffer();
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await waitForNextTask();
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testThatBufferContainsTheRightResources();
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}, "Test that if the buffer is cleared after entries were added to the secondary buffer, those entries make it into the primary one");
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</script>
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</body>
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</html>
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