public void Given_ParcelWithFastDeliveryOption_Should_ReturnValidResultWithCorrectTotalPrice()
{
//Arrange
var parcelMetadataProvider = new Mock <IParcelMetadataProvider>();
parcelMetadataProvider.Setup(x => x.ResolveParcelMetadata(It.IsAny <Parcel>()))
.Returns(new ParcelMetadata(ParcelType.Small, 10, 10, 2));
var weightCostCalculator = new Mock <IWeightCostCalculator>();
weightCostCalculator.Setup(y => y.GetCost(It.IsAny <decimal>(), It.IsAny <decimal>(), It.IsAny <decimal>()))
.Returns(20);
var discountCalculator = new Mock <IDiscountCalculator>();
discountCalculator.Setup(x => x.CalculateDiscount(It.IsAny <IEnumerable <ParcelDeliveryCost> >()))
.Returns(new List <DeliveryDiscount>());
var sut = new ParcelPriceCalculator(parcelMetadataProvider.Object, discountCalculator.Object,
weightCostCalculator.Object);
var parcel = new Parcel(10, 10, 10, 10);
//Act
var result = sut.Calculate(parcel, d => d.WithFastDelivery());
//Assert
result.Should().NotBeNull();
result.DeliveryCost.Should().Be(30);
result.TotalCost.Should().Be(60);
result.FastDeliveryCost.Should().Be(30);
}
Given_ListOfParcelsWithFastDeliveryOptionAndEligibleDiscounts_Should_ReturnValidResultWithCorrectTotalPrice()
{
//Arrange
var parcel1 = new Parcel(10, 10, 10, 10);
var parcel2 = new Parcel(10, 10, 10, 60);
var parcelMetadataProvider = new Mock <IParcelMetadataProvider>();
parcelMetadataProvider.Setup(x => x.ResolveParcelMetadata(It.Is <Parcel>(p => p.Weight == parcel1.Weight)))
.Returns(new ParcelMetadata(ParcelType.Small, 10, 10, 2));
parcelMetadataProvider.Setup(x => x.ResolveParcelMetadata(It.Is <Parcel>(p => p.Weight == parcel2.Weight)))
.Returns(new ParcelMetadata(ParcelType.Heavy, 50, 50, 1));
var weightCostCalculator = new Mock <IWeightCostCalculator>();
weightCostCalculator.Setup(y => y.GetCost(It.IsAny <decimal>(), It.IsAny <decimal>(), It.IsAny <decimal>()))
.Returns(20);
var discountCalculator = new Mock <IDiscountCalculator>();
discountCalculator.Setup(x => x.CalculateDiscount(It.IsAny <IEnumerable <ParcelDeliveryCost> >()))
.Returns(new List <DeliveryDiscount> {
new DeliveryDiscount("Delivery Discount for Small Parcel", 5m)
});
var sut = new ParcelPriceCalculator(parcelMetadataProvider.Object, discountCalculator.Object,
weightCostCalculator.Object);
//Act
var result = sut.Calculate(new[] { parcel1, parcel2 }, options => options.WithFastDelivery());
//Assert
result.Should().NotBeNull();
result.DeliveryDiscounts.Should().HaveCount(1);
result.ParcelDeliveryCosts.Should().HaveCount(2)
.And.Contain(m =>
m.ParcelName == "Parcel #0, Small Parcel" && m.ParcelType == ParcelType.Small &&
m.Cost == 30m) // Parcel + Overweight
.And.Contain(m =>
m.ParcelName == "Parcel #1, Heavy Parcel" && m.ParcelType == ParcelType.Heavy &&
m.Cost == 70m); // Parcel + Overweight
result.FastDeliveryCost.Should().Be(95);
result.TotalCost.Should().Be(190);
}
