public function creationFailWhenEmptyRequestTest(AcceptanceTester $I)
 {
     $I->wantTo('See if creation fails when request is empty');
     $response = new Response();
     $response->setStatusCode(201);
     $expectation = new Expectation();
     $expectation->setResponse($response);
     $I->haveHttpHeader('Content-Type', 'application/json');
     $I->sendPOST('/__phiremock/expectations', $expectation);
     $I->seeResponseCodeIs('500');
     $I->seeResponseIsJson();
     $I->seeResponseEquals('{"result" : "ERROR", "details" : {"request":"Field request, was set with invalid value: NULL"}}');
 }