browser_aboutURLs.js

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"use strict";

// For some about: URLs, they will take more time to load and cause timeout.

// See Bug 1270998.

requestLongerTimeout(2);

add_task(async function () {

  let aboutURLs = [];

  // List of about: URLs that may cause problem, so we skip them in this test.

  let skipURLs = [

    // about:addons triggers an assertion in NS_CompareLoadInfoAndLoadContext:

    // "The value of mUserContextId in the loadContext and in the loadInfo are not the same"

    // This is due to a fetch request that has the default user context. Since

    // the fetch request omits credentials, the user context doesn't matter.

    "addons",

    // about:credits and about:logins will initiate network request.

    "credits",

    "logins",

    // about:telemetry will fetch Telemetry asynchronously and takes longer,

    // so we skip this for now.

    "telemetry",

    // about:downloads causes a shutdown leak with stylo-chrome. bug 1419943.

    "downloads",

    // about:debugging requires specific wait code for internal pending RDP requests.

    "debugging",

    "debugging-new",

    // about:protections uses RPM to send a message as soon as the page loads,

    // the page is destoryed before getting a response.

    "protections",

];

  for (let cid in Cc) {

    let result = cid.match(

      /@mozilla.org\/network\/protocol\/about;1\?what\=(.*)$/

);

    if (!result) {

      continue;

    let aboutType = result[1];

    let contract = "@mozilla.org/network/protocol/about;1?what=" + aboutType;

    try {

      let am = Cc[contract].getService(Ci.nsIAboutModule);

      let uri = Services.io.newURI("about:" + aboutType);

      let flags = am.getURIFlags(uri);

      if (

        !(flags & Ci.nsIAboutModule.HIDE_FROM_ABOUTABOUT) &&

        !skipURLs.includes(aboutType)

) {

        aboutURLs.push(aboutType);

    } catch (e) {

      // getService might have thrown if the component doesn't actually

      // implement nsIAboutModule

  for (let url of aboutURLs) {

    info("Loading about:" + url);

    let tab = BrowserTestUtils.addTab(gBrowser, "about:" + url, {

      userContextId: 1,

});

    await BrowserTestUtils.browserLoaded(tab.linkedBrowser);

    ok(true, "Done loading about:" + url);

    BrowserTestUtils.removeTab(tab);

});