browser_printpreview_crash.js

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/* Any copyright is dedicated to the Public Domain.

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

"use strict";

const TEST_URL =

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

  "http://example.com/browser/browser/base/content/test/tabcrashed/file_contains_emptyiframe.html";

const DOMAIN = "example.com";

/**

 * This is really a crashtest, but because we need PrintUtils this is written as a browser test.

 * Test that when we don't crash when trying to print a document in the following scenario -

 * A top level document has an iframe of different origin embedded (here example.com has test1.example.com iframe embedded)

 * and they both set their document.domain to be "example.com".

*/

add_task(async function test() {

  // 1. Open a new tab and wait for it to load the top level doc

  let newTab = await BrowserTestUtils.openNewForegroundTab(gBrowser, TEST_URL);

  let browser = newTab.linkedBrowser;

  // 2. Navigate the iframe within the doc and wait for the load to complete

  await SpecialPowers.spawn(browser, [], async function () {

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

    const loaded = new Promise(resolve => {

      iframe.addEventListener(

        "load",

        () => {

          resolve();

},

        { once: true }

);

});

    iframe.src =

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

      "http://test1.example.com/browser/browser/base/content/test/tabcrashed/file_iframe.html";

    await loaded;

});

  // 3. Change the top level document's domain

  await SpecialPowers.spawn(browser, [DOMAIN], async function (domain) {

    content.document.domain = domain;

});

  // 4. Get the reference to the iframe and change its domain

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

    return content.document.querySelector("iframe").browsingContext;

});

  await SpecialPowers.spawn(iframe, [DOMAIN], domain => {

    content.document.domain = domain;

});

  // 5. Try to print things

ok(

    !document.querySelector(".printPreviewBrowser"),

    "Should NOT be in print preview mode at the start of this test."

);

  // Enter print preview

  document.getElementById("cmd_print").doCommand();

  await BrowserTestUtils.waitForCondition(() => {

    let preview = document.querySelector(".printPreviewBrowser");

    return preview && BrowserTestUtils.isVisible(preview);

});

  let ppBrowser = document.querySelector(

    ".printPreviewBrowser[previewtype=source]"

);

  ok(ppBrowser, "Print preview browser was created");

  ok(true, "We did not crash.");

  // We haven't crashed! Exit the print preview.

  gBrowser.getTabDialogBox(gBrowser.selectedBrowser).abortAllDialogs();

  await BrowserTestUtils.waitForCondition(

    () => !document.querySelector(".printPreviewBrowser")

);

  info("We are not in print preview anymore.");

  BrowserTestUtils.removeTab(newTab);

});