Omnipay\PayPal\Message\RestAuthorizeResponse::getRedirectUrl PHP Метод

    public function getRedirectUrl()
    {
        if (isset($this->data['links']) && is_array($this->data['links'])) {
            foreach ($this->data['links'] as $key => $value) {
                if ($value['rel'] == 'approval_url') {
                    return $value['href'];
                }
            }
        }
        return null;
    }

 public function testRestPurchaseWithoutCardSuccess()
 {
     $httpResponse = $this->getMockHttpResponse('RestPurchaseWithoutCardSuccess.txt');
     $response = new RestAuthorizeResponse($this->getMockRequest(), $httpResponse->json(), $httpResponse->getStatusCode());
     $this->assertTrue($response->isSuccessful());
     $this->assertSame('PAY-3TJ47806DA028052TKTQGVYI', $response->getTransactionReference());
     $this->assertNull($response->getMessage());
     $this->assertNull($response->getRedirectData());
     $this->assertSame('GET', $response->getRedirectMethod());
     $this->assertSame('https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=EC-5KV58254GL528393N', $response->getRedirectUrl());
 }