public void GivenPaymentHandlerThrowsAnUnhandledException_WhenTryingToPostIt_ThenItReturnsABadRequestResponse()
{
// Given
var mockedLogger = Substitute.For <ILogger <PaymentProcessingController> >();
var mockedPaymentHandler = Substitute.For <IPaymentHandler>();
var realPaymentProcessingController = new PaymentProcessingController(mockedLogger, mockedPaymentHandler);
var request = new PaymentProcessingRequest();
var exception = new Exception("Test");
mockedPaymentHandler
.Handle(request)
.Throws(exception);
// When
var response = realPaymentProcessingController.Post(request).GetAwaiter().GetResult();
// Then
response.Should().NotBeNull();
response.Should().BeOfType <BadRequestObjectResult>();
response.As <BadRequestObjectResult>().Value.As <PaymentProcessingFailedResponse>().Success.Should().BeFalse();
response.As <BadRequestObjectResult>().Value.As <PaymentProcessingFailedResponse>().Message.Should().Be($"An unhandled error has occurred. Details: {exception.Message}");
mockedPaymentHandler.Received(1).Handle(request);
}
public void GivenAPaymentProcessingRequestIsProvidedAndPaymentHandlerReturnsAFailedTransaction_WhenHandlingIt_ThenItReturnsAFailedResponse()
{
// Given
var mockedLogger = Substitute.For <ILogger <PaymentProcessingController> >();
var mockedPaymentHandler = Substitute.For <IPaymentHandler>();
var realPaymentProcessingController = new PaymentProcessingController(mockedLogger, mockedPaymentHandler);
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
};
var expectedId = Guid.NewGuid();
mockedPaymentHandler
.Handle(request)
.Returns(new PaymentProcessingResponse()
{
Success = false, PaymentGatewayId = expectedId
});
// When
var response = realPaymentProcessingController.Post(request).GetAwaiter().GetResult();
// Then
response.Should().NotBeNull();
response.Should().BeOfType <OkObjectResult>();
response.As <OkObjectResult>().Value.Should().BeOfType <PaymentProcessingResponse>();
response.As <OkObjectResult>().Value.As <PaymentProcessingResponse>().Success.Should().BeFalse();
response.As <OkObjectResult>().Value.As <PaymentProcessingResponse>().PaymentGatewayId.Should().Be(expectedId);
mockedPaymentHandler.Received(1).Handle(request);
}
public void GivenAnInvalidPaymentProcessingRequestIsProvided_WhenTryingToPostIt_ThenItReturnsABadRequestResponse()
{
// Given
var mockedLogger = Substitute.For <ILogger <PaymentProcessingController> >();
var mockedPaymentHandler = Substitute.For <IPaymentHandler>();
var realPaymentProcessingController = new PaymentProcessingController(mockedLogger, mockedPaymentHandler);
var request = new PaymentProcessingRequest();
realPaymentProcessingController.ModelState.AddModelError("CardNumber", "Error Message");
// When
var response = realPaymentProcessingController.Post(request).GetAwaiter().GetResult();
// Then
response.Should().NotBeNull();
response.Should().BeOfType <BadRequestObjectResult>();
mockedPaymentHandler.Received(0).Handle(request);
}