Payum\Paypal\Ipn\Tests\ApiTest::throwIfResponseStatusNotOk PHP Method

    public function throwIfResponseStatusNotOk()
    {
        $clientMock = $this->createHttpClientMock();
        $clientMock->expects($this->once())->method('send')->will($this->returnCallback(function (RequestInterface $request) {
            return new Response(404);
        }));
        $api = new Api(array('sandbox' => false), $clientMock, $this->createHttpMessageFactory());
        $api->notifyValidate(array());
    }