Use mock XMLHttpRequest object to speed up tests

chrome/content/tests/notification.js

Index: chrome/content/tests/notification.js
===================================================================
--- a/chrome/content/tests/notification.js
+++ b/chrome/content/tests/notification.js
@@ -1,12 +1,11 @@
 (function()
 {
   let testRunner = null;
-  let server = null;
   let randomResult = 0.5;
 
   let originalInfo;
   let info = require("info");
 
   module("Notification handling",
   {
     setup: function()
@@ -14,52 +13,44 @@
       testRunner = this;
 
       preparePrefs.call(this);
       setupVirtualTime.call(this, function(wrapTimer)
       {
         let NotificationModule = getModuleGlobal("notification");
         NotificationModule.downloader._timer = wrapTimer(NotificationModule.downloader._timer);
       }, "notification", "downloader");
-
-      server = new nsHttpServer();
-      server.start(1234);
+      setupVirtualXMLHttp.call(this, "notification", "downloader");
 
       originalInfo = {};
       for (let key in info)
         originalInfo[key] = info[key];
 
       info.addonName = "adblockpluschrome";
       info.addonVersion = "1.4.1";
       info.application = "chrome";
       info.applicationVersion = "27.0";
       info.platform = "chromium";
       info.platformVersion = "12.0";
 
-      Prefs.notificationurl = "http://127.0.0.1:1234/notification.json";
+      Prefs.notificationurl = "http://example.com/notification.json";
       Prefs.notificationdata = {};
 
       // Replace Math.random() function
       let DownloaderGlobal = Cu.getGlobalForObject(getModuleGlobal("downloader"));
       this._origRandom = DownloaderGlobal.Math.random;
       DownloaderGlobal.Math.random = function() randomResult;
       randomResult = 0.5;
     },
 
     teardown: function()
     {
       restorePrefs.call(this);
       restoreVirtualTime.call(this);
-
-      stop();
-      server.stop(function()
-      {
-        server = null;
-        start();
-      });
+      restoreVirtualXMLHttp.call(this);
 
       for (let key in originalInfo)
         info[key] = originalInfo[key];
 
       if (this._origRandom)
       {
         let DownloaderGlobal = Cu.getGlobalForObject(getModuleGlobal("downloader"));
         DownloaderGlobal.Math.random = this._origRandom;
@@ -67,28 +58,24 @@
       }
 
       Notification.init();
     }
   });
 
   function registerHandler(notifications)
   {
-    server.registerPathHandler("/notification.json", function(metadata, response)
+    testRunner.registerHandler("/notification.json", function(metadata)
     {
-      response.setStatusLine("1.1", "200", "OK");
-      response.setHeader("Content-Type", "application/json");
-
       let notification = {
         version: 55,
         notifications: notifications
       };
 
-      let result = JSON.stringify(notification);
-      response.bodyOutputStream.write(result, result.length);
+      return [Cr.NS_OK, 200, JSON.stringify(notification)];
     });
   }
 
   function fixConstructors(object)
   {
     // deepEqual() expects that the constructors used in expected objects and
     // the ones in the actual results are the same. That means that we actually
     // have to construct our objects in the context of the notification module.