Added RedirectResponseInterface and isPaymentRefused test method

Author: lazychaser

src/Message/Response.php

@@ -3,9 +3,10 @@
 namespace Omnipay\YM\Message;
 
 use Omnipay\Common\Message\AbstractResponse as OmnipayAbstractResponse;
+use Omnipay\Common\Message\RedirectResponseInterface;
 use Omnipay\Common\Message\RequestInterface;
 
-class Response extends OmnipayAbstractResponse {
+class Response extends OmnipayAbstractResponse implements RedirectResponseInterface {
 
     /**
      * Operation is not performed, another request is needed.
@@ -56,6 +57,16 @@ public function inProgress()
         return $this->data['status'] == self::IN_PROGRESS;
     }
 
+    /**
+     * Get whether the payment was refused.
+     *
+     * @return bool
+     */
+    public function isPaymentRefused()
+    {
+        return in_array($this->getCode(), array( 'payment_refused', 'authorization_reject' ));
+    }
+
     /**
      * @return string
      */

tests/ExternalGatewayTest.php

@@ -69,6 +69,17 @@ public function testProcessSuccess()
 
         $this->assertTrue($response->isSuccessful());
         $this->assertNotEmpty($response->getTransactionReference());
+        $this->assertFalse($response->isPaymentRefused());
+    }
+
+    public function testProcessRefused()
+    {
+        $this->setMockHttpResponse('ProcessPaymentRefused.txt');
+
+        $response = $this->gateway->processPayment($this->processOptions)->send();
+
+        $this->assertFalse($response->isSuccessful());
+        $this->assertTrue($response->isPaymentRefused());
     }
 
     public function testProcessRedirect()

tests/Message/ResponseTest.php

@@ -45,6 +45,7 @@ public function testRedirect()
         $this->assertEquals('GET', $response->getRedirectMethod());
         $this->assertEquals('https://example.com?foo=bar&baz=bax', $response->getRedirectUrl());
         $this->assertEquals(null, $response->getRedirectData());
+        $this->assertInstanceOf('Symfony\Component\HttpFoundation\Response', $response->getRedirectResponse());
     }
 
     public function testMoneySource()

tests/Mock/ProcessPaymentRefused.txt

@@ -0,0 +1,3 @@
+HTTP/1.1 200 OK
+
+{"status": "refused", "error": "payment_refused"}