/**
  * test invoking controller methods.
  *
  * @return void
  */
 public function testInvokeActionReturnValue()
 {
     $url = new CakeRequest('test/returner/');
     $url->addParams(array('controller' => 'test_controller', 'action' => 'returner', 'pass' => array()));
     $response = $this->getMock('CakeResponse');
     $Controller = new TestController($url, $response);
     $result = $Controller->invokeAction($url);
     $this->assertEquals('I am from the controller.', $result);
 }