function test() {
  let quitRequestObserver = {
    observe: function(aSubject, aTopic, aData) {
      ok(aTopic == "quit-application-requested" &&
         aSubject instanceof Components.interfaces.nsISupportsPRBool,
         "Received a quit request we're going to deny");
      aSubject.data = true;
    }
  };
  
  // ensure that we don't accidentally quit
  let os = Components.classes["@mozilla.org/observer-service;1"]
                     .getService(Components.interfaces.nsIObserverService);
  os.addObserver(quitRequestObserver, "quit-application-requested", false);
  
  ok(!Application.quit(),    "Tried to quit - and didn't succeed");
  ok(!Application.restart(), "Tried to restart - and didn't succeed");
  
  // clean up
  os.removeObserver(quitRequestObserver, "quit-application-requested", false);
}