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() {

   const PROPERTIES = ["name", "host", "arch", "version", "pagesize",

                       "pageshift", "memmapalign", "cpucount", "memsize"];

   let sysInfo = Components.classes["@mozilla.org/system-info;1"].

                 getService(Components.interfaces.nsIPropertyBag2);

   PROPERTIES.forEach(function(aPropertyName) {

     print("Testing property: " + aPropertyName);

     let value = sysInfo.getProperty(aPropertyName);

     do_check_true(!!value);

   });

   // This property must exist, but its value might be zero.

   print("Testing property: umask")

   do_check_eq(typeof sysInfo.getProperty("umask"), "number");

 }