public function testApiKey()
 {
     $expectedApiKey = "sk_tst_111";
     Paystack::setApiKey($expectedApiKey);
     $actualApiKey = Paystack::getApiKey();
     $this->assertEquals($actualApiKey, $expectedApiKey);
 }
 /**
  * @param IRequest $request
  * @return IResponse
  */
 public function sendRequest(IRequest $request)
 {
     $response = \Httpful\Request::init()->addHeader('Authorization', 'Bearer ' . Paystack::getApiKey())->uri($request->getUrl())->method($request->getType())->addHeaders($request->getHeaders())->body($request->getBody())->sendsJson()->send();
     $iResponse = new Response($response->code, $response->body);
     return $iResponse;
 }