The Tor Browser / file revision

 var Cc = Components.classes;

 var Ci = Components.interfaces;

 // Regression test for bug 370103 - crash when passing a null listener to

 // nsIChannel.asyncOpen

 function run_test() {

   // Compose the jar: url

   var ioService = Cc["@mozilla.org/network/io-service;1"].

                     getService(Ci.nsIIOService);

   var file = do_get_file("data/test_bug370103.jar");

   var url = ioService.newFileURI(file).spec;

   url = "jar:" + url + "!/test_bug370103";

   // Try opening channel with null listener

   var channel = ioService.newChannel(url, null, null);

   var exception = false;

   try {

     channel.asyncOpen(null, null);

   }

   catch(e) {

     exception = true;

   }

   do_check_true(exception); // should throw exception instead of crashing

 }