browser_xhr_onchange_leak.js

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/* 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/.

*/

// Bug 1336811 - An XHR that has a .onreadystatechange waiting should

// not leak forever once the tab is closed. CC optimizations need to be

// turned off once it is closed.

add_task(async function test() {

  const url =

    "http://mochi.test:8888/browser/dom/xhr/tests/browser_xhr_onchange_leak.html";

  let newTab = await BrowserTestUtils.openNewForegroundTab(gBrowser, url);

  let browser = gBrowser.selectedBrowser;

  let origContentProcessId = browser.frameLoader.remoteTab.contentProcessId;

  let pageShowPromise = BrowserTestUtils.waitForContentEvent(

    browser,

    "pageshow",

    true

);

  BrowserTestUtils.startLoadingURIString(browser, "http://mochi.test:8888/");

  await pageShowPromise;

is(

    browser.frameLoader.remoteTab.contentProcessId,

    origContentProcessId,

    "we must still be in the same process after we navigate " +

      "so the entire process with the possibly-leaking window " +

      "doesn't get torn down"

);

  BrowserTestUtils.removeTab(newTab);

});