PHPUnit - REST API testing

I have REST API written in php, i want to test it with phpunit.

I wrote test like this, it works but response body was empty. I tested it with fiddler, it send response body.

Sorry for my english.

class ProgrammerControllerTest extends PHPUnit_Framework_TestCase{    public function testPOST()    {       // create our http client (Guzzle)    $client = new Guzzle\Http\Client();    $response = $client->post("http://api.loc/v2/", array('headers' => "User-Agent: Fiddler\r\n" ."Host: api.loc\r\n"."Content-Type: application/x-www-form-urlencoded\r\n"."Content-Length: 34\r\n",'body'    => array('kle' =>'sino','lat' => '41', 'long' => '69'),    ));    var_dump($response);    }}