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/. */

 const Cc = Components.classes;

 const Ci = Components.interfaces;

 function run_test() {

   var file = do_get_file("bug451678_subscript.js");

   var ios = Cc["@mozilla.org/network/io-service;1"]

               .getService(Ci.nsIIOService);

   var uri = ios.newFileURI(file);

   var scriptLoader = Cc["@mozilla.org/moz/jssubscript-loader;1"]

                        .getService(Ci.mozIJSSubScriptLoader);

   var srvScope = {};

   scriptLoader.loadSubScript(uri.spec, srvScope);

   do_check_true('makeTags' in srvScope && srvScope.makeTags instanceof Function);

 }