/**
  * Reset the request object
  *
  * Useful for test cases that need to test multiple trips to the server.
  *
  * @return Zend_Test_PHPUnit_ControllerTestCase
  */
 public function resetRequest()
 {
     if ($this->_request instanceof Zend_Controller_Request_HttpTestCase) {
         $this->_request->clearQuery()->clearPost();
     }
     $this->_request = null;
     return $this;
 }