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 svc =  Components.classes["@mozilla.org/charset-converter-manager;1"]

                        .getService(Components.interfaces.nsICharsetConverterManager);

   // Ensure normal calls to getCharsetAlias do work.

   do_check_eq(svc.getCharsetAlias("Windows-1255"), "windows-1255");

   try {

     svc.getCharsetAlias("no such thing");

     do_throw("Calling getCharsetAlias with invalid value should throw.");

   }

   catch (ex) {

     // The exception is expected.

   }

 }