browser_close_during_beforeunload.js

Enable keyboard shortcuts

"use strict";

// Tests that a second attempt to close a window while blocked on a

// beforeunload confirmation ignores the beforeunload listener and

// unblocks the original close call.

const DIALOG_TOPIC = "common-dialog-loaded";

add_task(async function () {

  await SpecialPowers.pushPrefEnv({

    set: [["dom.require_user_interaction_for_beforeunload", false]],

});

  let win = await BrowserTestUtils.openNewBrowserWindow();

  let browser = win.gBrowser.selectedBrowser;

  // eslint-disable-next-line @microsoft/sdl/no-insecure-url

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

  // eslint-disable-next-line @microsoft/sdl/no-insecure-url

  await BrowserTestUtils.browserLoaded(browser, false, "http://example.com/");

  await SpecialPowers.spawn(browser, [], () => {

    // eslint-disable-next-line mozilla/balanced-listeners

    content.addEventListener("beforeunload", event => {

      event.preventDefault();

});

});

  let confirmationShown = false;

  BrowserUtils.promiseObserved(DIALOG_TOPIC).then(() => {

    confirmationShown = true;

    win.close();

});

  win.close();

  ok(confirmationShown, "Before unload confirmation should have been shown");

  ok(win.closed, "Window should have been closed after second close() call");

});