/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

const TEST_URL = "http://example.com/browser/dom/tests/browser/dummy.html";
ChromeUtils.import("resource://gre/modules/AppConstants.jsm");

var events = [];

function getInfoFromService(subject, topic, value) {
  subject = subject.QueryInterface(Ci.nsIPerformanceMetricsData);
  if (subject.host == "example.com") {
    events.push(subject);
  }
}

add_task(async function test() {
  if (!AppConstants.RELEASE_OR_BETA) {
    SpecialPowers.setBoolPref('dom.performance.enable_scheduler_timing', true);
    Services.obs.addObserver(getInfoFromService, "performance-metrics");
    let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, TEST_URL);
    ChromeUtils.requestPerformanceMetrics();
    await BrowserTestUtils.removeTab(tab);

    Assert.ok(events.length > 0, "Should get some events");

    // let's check the last example.com tab event we got
    let last = events[events.length-1];
    Assert.equal(last.host, "example.com", "host should be example.com");
    Assert.ok(last.duration > 0, "Duration should be positive");

    let items = last.items.QueryInterface(Ci.nsIMutableArray);
    let enumerator = items.enumerate();
    let total = 0;
    while (enumerator.hasMoreElements()) {
        let item = enumerator.getNext();
        item = item.QueryInterface(Ci.nsIPerformanceMetricsDispatchCategory);
        total += item.count;
    }
    Assert.ok(total > 0);
    SpecialPowers.clearUserPref('dom.performance.enable_scheduler_timing');
  }
});