forked from mirrors/gecko-dev
3073443de2
Adds the IPDL layer to asynchronously retrieve in the parent process the performance counters. MozReview-Commit-ID: RbKstNx8pi --HG-- extra : rebase_source : f81058b9bdd67c2f77bb5cd45d3838bc12f406ea
45 lines
1.7 KiB
JavaScript
45 lines
1.7 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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const TEST_URL = "http://example.com/browser/dom/tests/browser/dummy.html";
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ChromeUtils.import("resource://gre/modules/AppConstants.jsm");
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var events = [];
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function getInfoFromService(subject, topic, value) {
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subject = subject.QueryInterface(Ci.nsIPerformanceMetricsData);
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if (subject.host == "example.com") {
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events.push(subject);
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}
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}
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add_task(async function test() {
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if (!AppConstants.RELEASE_OR_BETA) {
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SpecialPowers.setBoolPref('dom.performance.enable_scheduler_timing', true);
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Services.obs.addObserver(getInfoFromService, "performance-metrics");
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let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, TEST_URL);
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ChromeUtils.requestPerformanceMetrics();
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await BrowserTestUtils.removeTab(tab);
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Assert.ok(events.length > 0, "Should get some events");
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// let's check the last example.com tab event we got
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let last = events[events.length-1];
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Assert.equal(last.host, "example.com", "host should be example.com");
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Assert.ok(last.duration > 0, "Duration should be positive");
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let items = last.items.QueryInterface(Ci.nsIMutableArray);
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let enumerator = items.enumerate();
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let total = 0;
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while (enumerator.hasMoreElements()) {
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let item = enumerator.getNext();
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item = item.QueryInterface(Ci.nsIPerformanceMetricsDispatchCategory);
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total += item.count;
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}
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Assert.ok(total > 0);
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SpecialPowers.clearUserPref('dom.performance.enable_scheduler_timing');
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}
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});
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