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Automatic update from web-platform-tests Align resource timing buffer full processing to spec PR 168 (take 3) This change implements the processing model from PR 168[1], when it comes to setResourceTimingBufferSize(), clearResourceTimings() and the firing of the resourcetimingbufferfull event. This is a reland of [2] which is a reland of [3] (but with nicer tests). [1] https://github.com/w3c/resource-timing/pull/168 [2] https://chromium-review.googlesource.com/c/chromium/src/+/1350950 [3] https://chromium-review.googlesource.com/c/chromium/src/+/1345269 Bug: 908181, 908414 Change-Id: I3a6c6e9d6a9aa5b5f907d1e86bec701ff2fa022d Reviewed-on: https://chromium-review.googlesource.com/c/1373819 Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Commit-Queue: Yoav Weiss <yoavweiss@chromium.org> Cr-Commit-Position: refs/heads/master@{#615929} -- wpt-commits: 79001b1d0d4a111b7f44608404d7b5504d755a1c wpt-pr: 14479
82 lines
2.6 KiB
HTML
82 lines
2.6 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8">
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<link rel="help" href="https://w3c.github.io/resource-timing/#dom-performance-setresourcetimingbuffersize">
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<title>This test validates that setResourceTimingBufferFull behaves appropriately when set to the current buffer level.</title>
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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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let eventFired = false;
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let loadRandomResource = () => {
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return fetch(window.location.href + "?" + Math.random());
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};
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setup(() => {
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// Get the browser into a consistent state.
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clearBufferAndSetSize(100);
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window.result = "";
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});
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let fillUpTheBuffer = () => {
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return new Promise(resolve => {
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// Gather up 3 Resource Entries to kick off the rest of test behavior.
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let resources = 0;
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let observer = new PerformanceObserver(list => {
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resources += list.getEntriesByType("resource").length;
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if (resources !== 3)
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return;
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observer.disconnect();
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resolve();
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});
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observer.observe({entryTypes: ["resource"]});
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for (let i = 0; i < 3; ++i)
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loadRandomResource();
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});
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};
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let setBufferSize = () => {
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performance.onresourcetimingbufferfull = () => {
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eventFired = true;
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window.result += "Event Fired with " + performance.getEntriesByType("resource").length + " entries. ";
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performance.clearResourceTimings();
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};
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window.result += "before setLimit(3). ";
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performance.setResourceTimingBufferSize(3);
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window.result += "after setLimit(3). ";
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};
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let overflowTheBuffer = () => {
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return new Promise(resolve => {
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loadRandomResource().then(() => {
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window.result += "after loading 4th resource. ";
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resolve();
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});
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});
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};
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let checkResult = () => {
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return new Promise((resolve, reject) => {
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if (window.result != "before setLimit(3). after setLimit(3). after loading 4th resource. Event Fired with 3 entries. ") {
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reject("Non matching value: " + window.result);
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}
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let entries = performance.getEntriesByType("resource");
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if (entries.length != 1) {
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reject("Number of entries in resource timing buffer is unexpected: " + entries.length);
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}
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resolve();
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});
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};
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promise_test(async () => {
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await fillUpTheBuffer();
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setBufferSize();
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await overflowTheBuffer();
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await waitForEventToFire();
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await checkResult();
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}, "Test that entries added and event firing happened in the right sequence");
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</script>
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