public async Task Process_ValidRequest_ReturnsPayment()
{
// Arrange
var acquiringBank = Substitute.For <IAcquiringBank>();
var mediator = Substitute.For <IMediator>();
var acquiringBankPaymentId = Guid.NewGuid().ToString();
var dateTime = DateTime.Now;
var money = new Money(100M, "GBP");
const string cardHolderName = "John Smith";
const string maskedCardNumber = "123412******1234";
var timestamp = DateTime.Now;
var paymentRequest = new PaymentRequest(1, "John Smith", "1234 1234 1234 1234", dateTime, money, "123");
var paymentResponse = new PaymentResponse(acquiringBankPaymentId, PaymentStatus.Approved, timestamp);
var payment = new Payment(
1,
100,
cardHolderName,
maskedCardNumber,
dateTime,
money,
acquiringBankPaymentId,
PaymentStatus.Approved,
timestamp);
acquiringBank.Process(Arg.Is <PaymentRequest>(pr => pr.CardNumber == "1234123412341234" && pr.CVV == "123")).Returns(paymentResponse);
mediator
.Send(Arg.Is <FindMerchant>(f => f.Id == 1))
.Returns(Task.FromResult(new Merchant(1, "Merchant")));
mediator
.Send(Arg.Is <SavePayment>(s => s.Request.CardNumber == "1234123412341234" && s.Request.CVV == "123" && s.Response.AcquiringBankPaymentId == acquiringBankPaymentId))
.Returns(Task.FromResult(payment));
var paymentRequestProcessor = new PaymentRequestProcessor(acquiringBank, mediator);
// Act
var result = await paymentRequestProcessor.Process(paymentRequest);
// Assert
result.Id.Should().Be(1);
result.MerchantId.Should().Be(100);
result.CardHolderName.Should().Be(cardHolderName);
result.MaskedCardNumber.Should().Be(maskedCardNumber);
result.ExpiryDate.Should().Be(dateTime);
result.Money.Amount.Should().Be(money.Amount);
result.Money.Currency.Should().Be(money.Currency);
result.AcquiringBankPaymentId.Should().Be(acquiringBankPaymentId);
result.Status.Should().Be(PaymentStatus.Approved);
result.Timestamp.Should().Be(timestamp);
}
public async Task Process_AlreadyProcessedRequest_ThrowsException()
{
// Arrange
var acquiringBank = Substitute.For <IAcquiringBank>();
var mediator = Substitute.For <IMediator>();
var dateTime = DateTime.Now;
var money = new Money(100M, "GBP");
var paymentRequest = new PaymentRequest(1, "John Smith", "1234 1234 1234 1234", dateTime, money, "123")
{
IsProcessed = true
};
var paymentRequestProcessor = new PaymentRequestProcessor(acquiringBank, mediator);
// Act
Func <Task> act = async() => await paymentRequestProcessor.Process(paymentRequest);
// Assert
await act.Should().ThrowAsync <InvalidOperationException>().WithMessage("Request have been processed already.");
}
public async Task Process_UnknownMerchant_ThrowsException()
{
// Arrange
var acquiringBank = Substitute.For <IAcquiringBank>();
var mediator = Substitute.For <IMediator>();
var dateTime = DateTime.Now;
var money = new Money(100M, "GBP");
var paymentRequest = new PaymentRequest(1, "John Smith", "1234 1234 1234 1234", dateTime, money, "123");
var paymentRequestProcessor = new PaymentRequestProcessor(acquiringBank, mediator);
mediator
.Send(Arg.Is <FindMerchant>(f => f.Id == 1))
.Returns(Task.FromResult <Merchant>(null));
// Act
Func <Task> act = async() => await paymentRequestProcessor.Process(paymentRequest);
// Assert
await act.Should().ThrowAsync <InvalidOperationException>().WithMessage("Merchant with Id: 1 not found.");
}
