browser_remoteness_change_listeners.js

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/* Any copyright is dedicated to the Public Domain.

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

"use strict";

/**

 * Check that adding progress listeners to a browser doesn't break things

 * when switching the remoteness of that browser.

*/

add_task(async function test_remoteness_switch_listeners() {

  await BrowserTestUtils.withNewTab("about:support", async function (browser) {

    let wpl;

    let navigated = new Promise(resolve => {

      wpl = {

        onLocationChange() {

          is(browser.currentURI.spec, "https://example.com/");

          if (browser.currentURI?.spec == "https://example.com/") {

            resolve();

},

        QueryInterface: ChromeUtils.generateQI([

          Ci.nsISupportsWeakReference,

          Ci.nsIWebProgressListener2,

          Ci.nsIWebProgressListener,

]),

};

      browser.addProgressListener(wpl);

});

    let loaded = BrowserTestUtils.browserLoaded(

      browser,

      null,

      "https://example.com/"

);

    BrowserTestUtils.startLoadingURIString(browser, "https://example.com/");

    await Promise.all([loaded, navigated]);

    browser.removeProgressListener(wpl);

});

});