public void GivenANullPaymentProcessingRequest_WhenTryingToConvertToPaymentRecord_ThenItThrowsAnArgumentException()
{
// When
var exception = Assert.Throws <ArgumentException>(() => PaymentRecord.Convert(null));
// Then
exception.Should().NotBeNull();
exception.Should().BeOfType <ArgumentException>();
exception.Message.Should().Be("PaymentProcessingRequest cannot be null.");
}
public async Task <PaymentProcessingResponse> Handle(PaymentProcessingRequest paymentProcessingRequest)
{
var paymentRecord = PaymentRecord.Convert(paymentProcessingRequest);
try
{
await _paymentRepository.Upsert(paymentRecord);
var bankResponse = await _bankHandler.Handle(paymentProcessingRequest);
paymentRecord.BankTransactionId = bankResponse.TransactionId;
paymentRecord.PaymentStatus = bankResponse.Success ? PaymentStatus.Success : PaymentStatus.Failed;
await _paymentRepository.Upsert(paymentRecord);
}
catch (BankingException bankingException)
{
_logger.LogError(bankingException.ToString());
throw new PaymentProcessingException($"There was an issue when processing the transaction with the bank. Details: {bankingException.Message}");
}
catch (PaymentRepositoryException paymentRepositoryException)
{
_logger.LogError(paymentRepositoryException.ToString());
throw new PaymentProcessingException($"There was an issue when saving the request. Details: {paymentRepositoryException.Message}");
}
catch (Exception exception)
{
_logger.LogError(exception.ToString());
throw new PaymentProcessingException($"An unhandled error has occurred. Details: {exception.Message}");
}
var response = new PaymentProcessingResponse
{
PaymentGatewayId = paymentRecord.PaymentGatewayId,
Success = paymentRecord.PaymentStatus == PaymentStatus.Success
};
return(response);
}
public void GivenAValidPaymentProcessingRequest_WhenTryingToConvertToPaymentRecord_ThenItReturnsAPaymentRecord()
{
// Given
const string cardNumber = "1234567812345678";
const int expiryMonth = 12;
const int expiryYear = 2025;
const int cvv = 123;
const double amount = 123.45;
const string currencyIsoCode = "GBP";
var request = new PaymentProcessingRequest
{
CardNumber = cardNumber,
ExpiryMonth = expiryMonth,
ExpiryYear = expiryYear,
Cvv = cvv,
Amount = amount,
CurrencyIsoCode = currencyIsoCode
};
// When
var response = PaymentRecord.Convert(request);
// Then
response.Should().NotBeNull();
response.Should().BeOfType <PaymentRecord>();
response.CardNumber.Should().Be(cardNumber);
response.ExpiryMonth.Should().Be(expiryMonth);
response.ExpiryYear.Should().Be(expiryYear);
response.Cvv.Should().Be(cvv);
response.Amount.Should().Be(amount);
response.CurrencyIsoCode.Should().Be(currencyIsoCode);
response.PaymentStatus.Should().Be(PaymentStatus.Pending);
response.PaymentGatewayId.Should().NotBe(Guid.Empty);
}