Zend_Gdata_HttpClient::setAdapter PHP Méthode

    public function setAdapter($adapter)
    {
        if ($adapter == null) {
            $this->adapter = $adapter;
        } else {
            parent::setAdapter($adapter);
        }
    }

 /**
  * @expectedException Zend_Gdata_App_HttpException
  */
 public function testGetAuthSubTokenInfoCatchesHttpClientException()
 {
     $adapter = new Zend_Http_Client_Adapter_Test();
     $adapter->setNextRequestWillFail(true);
     $client = new Zend_Gdata_HttpClient();
     $client->setUri('http://example.com/AuthSub');
     $client->setAdapter($adapter);
     $revoked = Zend_Gdata_AuthSub::getAuthSubTokenInfo($this->token, $client);
 }