Omnipay\PayPal\RestGateway::cancelSubscription PHP Méthode

    public function cancelSubscription(array $parameters = array())
    {
        return $this->createRequest('\\Omnipay\\PayPal\\Message\\RestCancelSubscriptionRequest', $parameters);
    }

 public function testCancelSubscription()
 {
     $this->setMockHttpResponse('RestGenericSubscriptionSuccess.txt');
     $response = $this->gateway->cancelSubscription($this->subscription_options)->send();
     $this->assertTrue($response->isSuccessful());
     $this->assertNull($response->getMessage());
 }