text: function runTest()
  {
      var notification = new Notification("Notification");
      notification.addEventListener("show", function() {
          testPassed("notification.onshow() has been called.");
          if (window.testRunner)
              testRunner.simulateWebNotificationClick("Notification");
      });
  
      notification.addEventListener("click", function() {
          testPassed("notification.onclick() has been called.");
          notification.close();
  
          if (window.testRunner)
              testRunner.notifyDone();
      });
  }
  