public function testNullResponseException()
{
$this->setExpectedException('GuzzleHttp\\Exception\\RequestException');
$guzzle = $this->getGuzzle([new RequestException('', $this->getMock('Psr\\Http\\Message\\RequestInterface'))]);
$client = new Client();
$client->setClient($guzzle);
$client->request('GET', 'http://www.example.com/');
$client->getResponse();
}