michael@0: function run_test() {
michael@0:   var idnService = Cc["@mozilla.org/network/idn-service;1"]
michael@0:                    .getService(Ci.nsIIDNService);
michael@0: 
michael@0:   var isASCII = {};
michael@0:   do_check_eq(idnService.convertToDisplayIDN("xn--", isASCII), "xn--");
michael@0: }