The Tor Browser / file revision

 Cu.import("resource://testing-common/httpd.js");

 var httpserver = new HttpServer();

 var testpath = "/simple";

 var httpbody = "<?xml version='1.0' ?><root>0123456789</root>";

 function createXHR(async)

 {

   var xhr = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"]

             .createInstance(Ci.nsIXMLHttpRequest);

   xhr.open("GET", "http://localhost:" +

            httpserver.identity.primaryPort + testpath, async);

   return xhr;

 }

 function checkResults(xhr)

 {

   if (xhr.readyState != 4)

     return false;

   do_check_eq(xhr.status, 200);

   do_check_eq(xhr.responseText, httpbody);

   var root_node = xhr.responseXML.getElementsByTagName('root').item(0);

   do_check_eq(root_node.firstChild.data, "0123456789");

   return true;

 }

 function run_test()

 {

   httpserver.registerPathHandler(testpath, serverHandler);

   httpserver.start(-1);

   // Test sync XHR sending

   var sync = createXHR(false);

   sync.send(null);

   checkResults(sync);

   // Test async XHR sending

   let async = createXHR(true);

   async.addEventListener("readystatechange", function(event) {

     if (checkResults(async))

       httpserver.stop(do_test_finished);

   }, false);

   async.send(null);

   do_test_pending();

 }

 function serverHandler(metadata, response)

 {

   response.setHeader("Content-Type", "text/xml", false);

   response.bodyOutputStream.write(httpbody, httpbody.length);

 }