netwerk/test/unit/test_dns_service.js

   1 function run_test() {
   2   var dns = Components.classes["@mozilla.org/network/dns-service;1"]
   3                       .getService(Components.interfaces.nsIDNSService);
   4   var rec = dns.resolve("localhost", 0);
   5   var answer = rec.getNextAddrAsString();
   6   do_check_true(answer == "127.0.0.1" || answer == "::1");
   7 }