browser_bug2007897.js

Enable keyboard shortcuts

/* Any copyright is dedicated to the Public Domain.

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

"use strict";

const { TabStateFlusher } = ChromeUtils.importESModule(

  "resource:///modules/sessionstore/TabStateFlusher.sys.mjs"

);

// Restore a page containing a cross-origin about:blank iframe

add_task(async function test_restore_with_cross_origin_blank_iframe() {

  const tab = await BrowserTestUtils.openNewForegroundTab(

    gBrowser,

    "https://example.com/browser/docshell/test/browser/file_2007897.html"

);

  const blankLoaded = BrowserTestUtils.browserLoaded(tab.linkedBrowser, {

    wantLoad: "about:blank",

    includeSubFrames: true,

});

  await SpecialPowers.spawn(tab.linkedBrowser, [], async () => {

    const ifr = content.document.querySelector("iframe");

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

      // Must use wrappedJSObject so we use the right content principal

      content.wrappedJSObject.location = "about:blank";

});

});

  await blankLoaded;

  await TabStateFlusher.flush(tab.linkedBrowser);

  const sessionStoreClosedObjectsChanged = TestUtils.topicObserved(

    "sessionstore-closed-objects-changed"

);

  gBrowser.removeTab(tab);

  await sessionStoreClosedObjectsChanged;

  const restoredTab = SessionStore.undoCloseTab(window, 0);

  await BrowserTestUtils.waitForEvent(restoredTab, "SSTabRestored");

  // The crash doesn't cause the test to fail, so check if the iframe was restored

  await SpecialPowers.spawn(restoredTab.linkedBrowser, [], async () => {

    const ifr = content.document.querySelector("iframe");

    Assert.ok(ifr, "did not crash");

    Assert.ok(!ifr.contentDocument && !ifr.document, "iframe is restricted");

});

  BrowserTestUtils.removeTab(restoredTab);

});