Sonata\Component\Payment\CheckPayment::sendbank PHP Method

    public function sendbank(OrderInterface $order)
    {
        $params = array('bank' => $this->getCode(), 'reference' => $order->getReference(), 'check' => $this->generateUrlCheck($order));
        // call the callback handler ...
        $url = $this->router->generate($this->getOption('url_callback'), $params, UrlGeneratorInterface::ABSOLUTE_URL);
        $response = $this->browser->get($url);
        if ($response->getContent() == 'ok') {
            $routeName = 'url_return_ok';
        } else {
            $routeName = 'url_return_ko';
            $this->logger->critical(sprintf('The CheckPayment received a ko result : %s', $response->getContent()));
        }
        // redirect the user to the correct page
        $response = new Response('', 302, array('Location' => $this->router->generate($this->getOption($routeName), $params, UrlGeneratorInterface::ABSOLUTE_URL)));
        $response->setPrivate();
        return $response;
    }

 public function testSendbank()
 {
     $date = new \DateTime();
     $date->setTimeStamp(strtotime('30/11/1981'));
     $date->setTimezone(new \DateTimeZone('Europe/Paris'));
     $order = new CheckPaymentTest_Order();
     $order->setCreatedAt($date);
     $router = $this->getMock('Symfony\\Component\\Routing\\RouterInterface');
     $router->expects($this->exactly(2))->method('generate')->will($this->returnValue('http://foo.bar/ok-url'));
     $logger = $this->getMock('Symfony\\Component\\HttpKernel\\Log\\LoggerInterface');
     $client = $this->getMock('Buzz\\Client\\ClientInterface');
     $client->expects($this->once())->method('send')->will($this->returnCallback(function ($request, $response) {
         $response->setContent('ok');
     }));
     $browser = new Browser($client);
     $payment = new CheckPayment($router, $logger, $browser);
     $response = $payment->sendbank($order);
     $this->assertInstanceOf('Symfony\\Component\\HttpFoundation\\Response', $response);
     $this->assertEquals(302, $response->getStatusCode());
     $this->assertEquals('http://foo.bar/ok-url', $response->headers->get('Location'));
     $this->assertFalse($response->isCacheable());
 }