browser_toolbox_options_disable_cache-03.js

Enable keyboard shortcuts

/* Any copyright is dedicated to the Public Domain.

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

"use strict";

// Test that even when the cache is disabled, the inspector/styleeditor don't fetch again

// stylesheets from the server to display them in devtools, but use the cached version.

const TEST_CSS = URL_ROOT + "browser_toolbox_options_disable_cache.css.sjs";

const TEST_PAGE = `<html>

  <head>

    <meta charset="utf-8"/>

    <link href="${TEST_CSS}" rel="stylesheet" type="text/css"/>

  </head>

  <body></body>

</html>`;

add_task(async function () {

  info("Setup preferences for testing");

  // Disable rcwn to make cache behavior deterministic.

  await pushPref("network.http.rcwn.enabled", false);

  // Disable the cache.

  await pushPref("devtools.cache.disabled", true);

  info("Open inspector");

  const toolbox = await openNewTabAndToolbox(

    `data:text/html;charset=UTF-8,${encodeURIComponent(TEST_PAGE)}`,

    "inspector"

);

  const inspector = toolbox.getPanel("inspector");

  info(

    "Check that the CSS content loaded in the page " +

      "and the one shown in the inspector are the same"

);

  const webContent = await getWebContent();

  const inspectorContent = await getInspectorContent(inspector);

is(

    webContent,

    inspectorContent,

    "The contents of both web and DevTools are same"

);

  await closeTabAndToolbox();

});

async function getInspectorContent(inspector) {

  const ruleView = inspector.getPanel("ruleview").view;

  const valueEl = await waitFor(() =>

    ruleView.styleDocument.querySelector(".ruleview-propertyvalue")

);

  return valueEl.textContent;

async function getWebContent() {

  return SpecialPowers.spawn(gBrowser.selectedBrowser, [], () => {

    const doc = content.document;

    return doc.ownerGlobal.getComputedStyle(doc.body, "::before").content;

});