public void AppleOfferEngineShouldReturnDiscountWhenThereIsOne()
{
//Arrange
var appleDiscountOffer = new Offer
{
DiscountCode = "TenPercentOff",
DiscountDetail = "Apples 10% off",
ProductId = 1
};
var basketItems = new List <BasketItem>
{
new BasketItem
{
ProductId = 1,
OfferType = appleDiscountOffer,
NumberOfItems = 1,
PricePerItem = 100,
ProductName = "Apples"
},
new BasketItem
{
ProductId = 2,
OfferType = null,
NumberOfItems = 1,
PricePerItem = 130,
ProductName = "Bread"
},
new BasketItem
{
OfferType = null,
ProductId = 3,
NumberOfItems = 1,
PricePerItem = 80,
ProductName = "Milk"
}
};
var currentOffersMock = new Mock <ICurrentOffers>();
currentOffersMock.Setup(offers => offers.GetCurrentOffers()).Returns(
new List <Offer>
{
appleDiscountOffer
}
);
ValidDiscount expectedResult = new ValidDiscount
{
DiscountAmount = 10,
OfferType = appleDiscountOffer
};
//Act
var sut = new AppleOfferEngine(currentOffersMock.Object);
var actualResult = sut.Apply(basketItems);
//Assert
Assert.AreEqual(expectedResult, actualResult);
}
public static decimal Discount(this decimal price, ValidDiscount validDiscount)
{
return(price * validDiscount.Discount / 100);
}
public void BreadOfferEngineShouldReturnDiscountWhenThereIsOne()
{
//Arrange
var breadOffer = new Offer
{
DiscountCode = "BuyTwoBeansGetBreadHalfPrice",
DiscountDetail = "Buy 2 Beans and Get half price bread",
ProductId = 2
};
var basketItems = new List <BasketItem>
{
new BasketItem
{
ProductId = 1,
OfferType = null,
NumberOfItems = 1,
PricePerItem = 100,
ProductName = "Apples"
},
new BasketItem
{
ProductId = 2,
OfferType = breadOffer,
NumberOfItems = 1,
PricePerItem = 80,
ProductName = "Bread"
},
new BasketItem
{
OfferType = null,
ProductId = 4,
NumberOfItems = 2,
PricePerItem = 65,
ProductName = "Beans"
}
};
var currentOffersMock = new Mock <ICurrentOffers>();
currentOffersMock.Setup(offers => offers.GetCurrentOffers()).Returns(
new List <Offer>
{
breadOffer
}
);
var productServiceMock = new Mock <IProductService>();
productServiceMock.Setup(service => service.GetProduct("Milk")).Returns(
new Product
{
ProductId = 3,
Price = 130,
ProductName = "Milk"
}
);
productServiceMock.Setup(service => service.GetProduct("Apples")).Returns(
new Product
{
ProductId = 1,
Price = 100,
ProductName = "Apples"
}
);
productServiceMock.Setup(service => service.GetProduct("Bread")).Returns(
new Product
{
ProductId = 2,
Price = 80,
ProductName = "Bread"
}
);
productServiceMock.Setup(service => service.GetProduct("Beans")).Returns(
new Product
{
ProductId = 4,
Price = 65,
ProductName = "Beans"
}
);
ValidDiscount expectedResult = new ValidDiscount
{
DiscountAmount = 40,
OfferType = breadOffer
};
//Act
var sut = new BreadOfferEngine(currentOffersMock.Object);
var actualResult = sut.Apply(basketItems);
//Assert
Assert.AreEqual(expectedResult, actualResult);
}