browser_markup_iframe_blocked_by_csp.js

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

"use strict";

// Test that iframe blocked because of CSP doesn't cause the browser to freeze.

const IFRAME_TEST_URI = `https://example.com/document-builder.sjs?html=${encodeURIComponent(`

  <h1>Test expanding CSP-blocked iframe</h1>

  <iframe src="https://example.org/document-builder.sjs?html=HelloIframe"></iframe>

`)}&headers=content-security-policy:default-src 'self'`;

const FRAME_TEST_URI = `https://example.com/document-builder.sjs?html=${encodeURIComponent(`

  <frameset>

    <frame src="https://example.org/document-builder.sjs?html=HelloFrame"></frame>

  </frameset>

`)}&headers=content-security-policy:default-src 'self'`;

const BYPASS_WALKERFRONT_CHILDREN_IFRAME_GUARD_PREF =

  "devtools.testing.bypass-walker-children-iframe-guard";

add_task(async function () {

  await pushPref(BYPASS_WALKERFRONT_CHILDREN_IFRAME_GUARD_PREF, true);

  const { inspector } = await openInspectorForURL(IFRAME_TEST_URI);

  await testElementBlockedByCSP("iframe", inspector);

  // Don't wait for the load event as it doesn't happen because the frame is blocked.

  await navigateTo(FRAME_TEST_URI, { waitForLoad: false });

  await testElementBlockedByCSP("frame", inspector);

});

async function testElementBlockedByCSP(selector, inspector) {

  await inspector.markup.expandAll();

  info(`Check that markup node for "${selector}" can't be expanded`);

  let container = await getContainerForSelector(selector, inspector);

is(

    container.expander.style.visibility,

    "hidden",

    "Expand icon is hidden, even without the safe guard in WalkerFront#children"

);

  info("Reload the page and do same assertion with the guard");

  Services.prefs.clearUserPref(BYPASS_WALKERFRONT_CHILDREN_IFRAME_GUARD_PREF);

  await reloadBrowser();

  await inspector.markup.expandAll();

  container = await getContainerForSelector(selector, inspector);

is(

    container.expander.style.visibility,

    "hidden",

    "Expand icon is still hidden"

);