public function testPurchaseFailure()
 {
     $httpResponse = $this->getMockHttpResponse('PurchaseFailure.txt');
     $response = new Response($this->getMockRequest(), $httpResponse->getBody());
     $this->assertFalse($response->isSuccessful());
     $this->assertSame('', $response->getTransactionReference());
     $this->assertSame('Input variable errors', $response->getMessage());
 }
 public function testAuthorizeSuccess()
 {
     $httpResponse = $this->getMockHttpResponse('AuthorizeSuccess.txt');
     $response = new Response($this->getMockRequest(), $httpResponse->json());
     $this->assertTrue($response->isSuccessful());
     $this->assertFalse($response->isRedirect());
     $this->assertSame('MTQ0NjgzMTQ5OArABirnISnF5KCCbyjn', $response->getTransactionReference());
     $this->assertNull($response->getCardReference());
     $this->assertNull($response->getMessage());
 }