public async Task WhenHandlingPaymentRequestGatewayShouldCallPaymentProcessor()
{
var request = new GatewayPaymentRequest
{
MerchantId = Guid.NewGuid().ToString(),
MerchantReferenceNumber = Guid.NewGuid().ToString(),
LongNumber = "1111 1111 1111 1111"
};
paymentProcessor.Setup(p => p.HandlePaymentRequest(It.IsAny <PaymentProcessorRequest>()))
.Returns(Task.FromResult(new PaymentProcessorResponse {
IsSuccess = true
}));
var gatewayResponse = await gateway.HandlePaymentRequest(request);
Check.That(gatewayResponse).IsNotNull();
paymentProcessor.Verify(p => p.HandlePaymentRequest(It.IsAny <PaymentProcessorRequest>()), Times.Once);
var storedRequest = await repository.RetrieveRequest(gatewayResponse.GatewayId);
Check.That(storedRequest).IsNotNull();
Check.That(storedRequest.MerchantId).Equals(request.MerchantId);
Check.That(storedRequest.MerchantReferenceNumber).Equals(request.MerchantReferenceNumber);
Check.That(storedRequest.LongNumber).IsNotEqualTo(request.LongNumber);
Check.That(storedRequest.TruncatedNumber).IsNotNull();
var responseDetails = await repository.RetrieveDetails(request.MerchantId, request.MerchantReferenceNumber);
Check.That(responseDetails).IsNotNull();
Check.That(responseDetails.MerchantId).Equals(request.MerchantId);
Check.That(responseDetails.MerchantReferenceNumber).Equals(request.MerchantReferenceNumber);
}
public void WillEncryptLongNumberAndProduceTruncatedOne()
{
var request = new GatewayPaymentRequest
{
LongNumber = "1111222233334444"
};
var encrypted = CardEncryptor.EncryptCardData(request);
Check.That(encrypted.TruncatedNumber).Equals("4444");
Check.That(encrypted.LongNumber).IsNotEqualTo(request.LongNumber);
}
public static PaymentProcessorRequest MapRequest(GatewayPaymentRequest request)
{
return(new PaymentProcessorRequest
{
CCV = request.CVV,
LongCardNumber = request.LongNumber,
NameOnCard = request.NameOnCard,
ValidFrom = request.ValidFrom,
ValidTo = request.ValidTo,
PaymentAmount = request.PaymentAmount,
PaymentCurrency = request.PaymentCurrency
});
}
public async Task <GatewayResponse> HandlePaymentRequest(GatewayPaymentRequest request)
{
var encyptedRequest = CardEncryptor.EncryptCardData(request);
var gatewayId = await repository.RegisterPaymentRequest(encyptedRequest);
var paymentRequest = PaymentProcessorMapper.MapRequest(request);
var result = await paymentProcessor.HandlePaymentRequest(paymentRequest);
var response = PaymentProcessorMapper.MapResponse(result, encyptedRequest);
await repository.RegisterResponse(response);
return(response);
}
public static GatewayResponse MapResponse(PaymentProcessorResponse response, GatewayPaymentRequest request)
{
return(new GatewayResponse
{
MerchantId = request.MerchantId,
MerchantReferenceNumber = request.MerchantReferenceNumber,
TimeStamp = request.TimeStamp,
GatewayId = request.GatewayId,
IsSuccess = response.IsSuccess,
FailureReason = response.FailureReason,
PaymentProcessorId = response.PaymentProcessorReference,
TruncatedCardNumber = request.TruncatedNumber,
PaymentAmount = request.PaymentAmount,
PaymentCurrency = request.PaymentCurrency
});
}
public static GatewayPaymentRequest EncryptCardData(GatewayPaymentRequest originalRequest)
{
var encrypted = new GatewayPaymentRequest
{
CVV = originalRequest.CVV,
LongNumber = "**********",
MerchantId = originalRequest.MerchantId,
MerchantReferenceNumber = originalRequest.MerchantReferenceNumber,
NameOnCard = originalRequest.NameOnCard,
PaymentAmount = originalRequest.PaymentAmount,
PaymentCurrency = originalRequest.PaymentCurrency,
TimeStamp = originalRequest.TimeStamp,
TruncatedNumber = originalRequest.LongNumber.Substring(Math.Max(0, originalRequest.LongNumber.Length - 4)),
ValidFrom = originalRequest.ValidFrom,
ValidTo = originalRequest.ValidTo
};
return(encrypted);
}
public Task <string> RegisterPaymentRequest(GatewayPaymentRequest request)
{
request.GatewayId = Guid.NewGuid().ToString();
requests.Add(request);
return(Task.FromResult(request.GatewayId));
}
