browser_toolbox_connecting_with_frozen_process.js

Enable keyboard shortcuts

/* Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

add_task(async function () {

  const initialTab = BrowserTestUtils.addTab(

    gBrowser,

    "https://example.com/document-builder.sjs?html=test-devtools-hang"

);

  gBrowser.selectedTab = BrowserTestUtils.addTab(

    gBrowser,

    "https://example.net/document-builder.sjs?html=test-devtools-hang"

);

  isnot(

    initialTab.linkedBrowser.browsingContext.currentWindowGlobal.osPid,

    gBrowser.selectedBrowser.browsingContext.currentWindowGlobal.osPid,

    "The two tabs are loaded in distinct processes"

);

  // Freeze the second tab

  const slowScriptDone = SpecialPowers.spawn(

    gBrowser.selectedBrowser,

[],

    function () {

      const start = Date.now();

      while (Date.now() < start + 4000) {

        // block the tab for 4 seconds

);

  let resumed = false;

  slowScriptDone.then(() => {

    resumed = true;

});

  // Select the first tab while the second is freezing

  gBrowser.selectedTab = initialTab;

  // Try opening on the first tab, which isn't freezing

  const toolbox = await gDevTools.showToolboxForTab(initialTab, {

    toolId: "webconsole",

});

  ok(true, "Toolbox successfully opened despite frozen tab in background");

is(

    resumed,

    false,

    "The background tab is still frozen after opening devtools"

);

  await slowScriptDone;

  is(resumed, true, "The background tab resumed its executions");

  await toolbox.closeToolbox();

});