michael@0: function test() {
michael@0:   // simple test to confirm we have chrome privileges
michael@0:   let hasPrivileges = true;
michael@0: 
michael@0:   // this will throw an exception if we are not running with privileges
michael@0:   try {
michael@0:     var prefs = Components.classes["@mozilla.org/preferences-service;1"].
michael@0:                 getService(Components.interfaces.nsIPrefBranch);
michael@0:   }
michael@0:   catch (e) {
michael@0:     hasPrivileges = false;
michael@0:   }
michael@0: 
michael@0:   // if we get here, we must have chrome privileges
michael@0:   ok(hasPrivileges, "running with chrome privileges");
michael@0: }