public void Handle_NonExistentMerchant_ThrowsException()
{
//arrange
var calculateFeeHandler = new Mock <ICommandHandler <CalculateFee, Fee> >();
var merchantRepository = new Mock <IMerchantRepository>();
merchantRepository.Setup(x => x.Get(It.IsAny <Name>())).Returns((Merchant)null);
var calculateFeeWithDiscountHandler = new CalculateFeeWithDiscountHandler(calculateFeeHandler.Object,
merchantRepository.Object);
var transaction = new Transaction(new Date(DateTime.Now), new Name("STEAM"), new Amount(100));
//act && assert
Assert.Throws <DomainObjectNotFoundException>(
() => calculateFeeWithDiscountHandler.Handle(new CalculateFee(Guid.NewGuid(), transaction)));
}
public void Handle_AppliesMerchantDiscount(double originalFee, double merchantDiscount, double expectedFee)
{
//arrange
var calculateFeeHandler = new Mock <ICommandHandler <CalculateFee, Fee> >();
calculateFeeHandler.Setup(x => x.Handle(It.IsAny <CalculateFee>())).Returns(new Fee(originalFee));
var merchantRepository = new Mock <IMerchantRepository>();
merchantRepository.Setup(x => x.Get(It.IsAny <Name>())).
Returns(new Merchant(new Name("STEAM"), new Percentage(merchantDiscount)));
var calculateFeeWithDiscountHandler = new CalculateFeeWithDiscountHandler(calculateFeeHandler.Object,
merchantRepository.Object);
var transaction = new Transaction(new Date(DateTime.Now), new Name("STEAM"), new Amount(100));
//act
var feeWithDiscount = calculateFeeWithDiscountHandler.Handle(new CalculateFee(Guid.NewGuid(), transaction));
//assert
calculateFeeHandler.Verify(x => x.Handle(It.IsAny <CalculateFee>()), Times.Once);
Assert.Equal(expectedFee, feeWithDiscount.Value);
}
