The Tor Browser / file revision

 /* 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/. */

 function run_test() {

   let tests = {

     "http://example.com": "example.com",

     "http://example.com/": "example.com",

     "http://example.com/foo/bar/baz": "example.com",

     "http://subdomain.example.com/foo/bar/baz": "subdomain.example.com",

     "http://qix.quux.example.com/foo/bar/baz": "qix.quux.example.com",

     "file:///home/foo/bar": "file:///home/foo/bar",

     "not a url": "not a url",

   };

   let cps = Cc["@mozilla.org/content-pref/service;1"].

             getService(Ci.nsIContentPrefService2);

   for (let url in tests) {

     do_check_eq(cps.extractDomain(url), tests[url]);

   }

 }