browser_tab_remoteness_change_fission_switch_target.js

Enable keyboard shortcuts

/* Any copyright is dedicated to the Public Domain.

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

"use strict";

// Test for target switching.

const PAGE_ON_CHILD = "http://example.com/";

const PAGE_ON_MAIN = "about:robots";

const TEST_DPPX = 2;

add_task(async function () {

  // Set a pref for DPPX in order to assert whether the RDM is working correctly or not.

  await pushPref("devtools.responsive.viewport.pixelRatio", TEST_DPPX);

  info("Open a page which runs on the child process");

  const tab = await addTab(PAGE_ON_CHILD);

  await assertDocshell(tab, false, 0);

  info("Open RDM");

  await openRDM(tab);

  await assertDocshell(tab, true, TEST_DPPX);

  info("Load a page which runs on the main process");

  await navigateTo(PAGE_ON_MAIN);

  await assertDocshell(tab, true, TEST_DPPX);

  info("Close RDM");

  await closeRDM(tab);

  await assertDocshell(tab, false, 0);

  await removeTab(tab);

});

async function assertDocshell(tab, expectedRDMMode, expectedDPPX) {

  await asyncWaitUntil(async () => {

    const { overrideDPPX, inRDMPane } = tab.linkedBrowser.browsingContext;

    return inRDMPane === expectedRDMMode && overrideDPPX === expectedDPPX;

});

  ok(true, "The state of the docshell is correct");