public void TestInitialize()
{
_items = new Items();
_halfPriceDiscountItem = new HalfPriceDiscountItem();
_halfPriceDiscount = new HalfPriceDiscount(_halfPriceDiscountItem, _items);
}
public void PercentageDiscount_CalculateAppliedDiscount_HalfPriceDiscount()
{
var basket = new List <ProductQuantity>();
var discounts = new List <IDiscount>();
var product = new Product()
{
Id = 1,
Name = "Apples",
Price = 100m
};
var productQuantity = new ProductQuantity()
{
Quantity = 1,
Product = product
};
basket.Add(productQuantity);
var percentageDiscount = new HalfPriceDiscount(product, productQuantity);
discounts.Add(percentageDiscount);
var sut = new DiscountService();
// Act
var result = sut.CalculateBasketDiscounts(basket, discounts);
// Assert
Assert.Equal(result.Any(), true);
Assert.Equal(result[0].Type, DiscountType.HalfPrice);
Assert.Equal(result[0].Amount, 50.00m);
Assert.Equal(result[0].Description, "Apples 50% OFF: - 50p");
}
public void HalfPriceDiscount_CalculateAppliedDiscount_WithQuantity_4OrMore()
{
// Arrange
var percentageDiscount = new HalfPriceDiscount(new ProductQuantity
{
Product = new Product
{
ProductId = 2,
Name = "Beans"
},
Quantity = 4
},
new DiscountedProduct()
{
ProductId = 3,
Name = "Bread"
});
// Act
var result = percentageDiscount.DiscountsApplicable(ProductQuantityHelper.CreateProductsForHalfPriceDiscounts()).ToArray();
// Assert
Assert.AreEqual(result.Any(), true);
Assert.AreEqual(result[0].Type, DiscountType.HalfPrice);
Assert.AreEqual(result[0].Amount, 0.40m);
Assert.AreEqual(result[0].Text, "Bread 50% OFF: - 40p");
}
public async Task <List <IDiscount> > GetProductDiscounts()
{
var result = new List <IDiscount>();
await Task.Delay(2);
var productDiscont1 = new PercentageDiscount(GetProductById(4), 0.10m);
result.Add(productDiscont1);
var productDiscont2 = new HalfPriceDiscount(GetProductById(2), new ProductQuantity()
{
Product = GetProductById(1),
Quantity = 2
});
result.Add(productDiscont2);
return(result);
}
public void HalfPriceDiscount_NoDiscountApplied_WithQuantity_20rMore()
{
// Arrange
var percentageDiscount = new HalfPriceDiscount(new ProductQuantity
{
Product = new Product
{
ProductId = 2,
Name = "Beans"
},
Quantity = 2
},
new DiscountedProduct()
{
ProductId = 4,
Name = "Milk"
});
// Act
var result = percentageDiscount.DiscountsApplicable(ProductQuantityHelper.CreateProducts()).ToArray();
// Assert
Assert.AreEqual(result.Any(), false);
}
public void RandomProductFor_PercentageDiscount_CalculateAppliedDiscount_HalfPriceDiscount(List <Product> products, HalfPriceDiscount halfPriceDiscount)
{
var discountRate = 0.5m;
// Arrange
halfPriceDiscount._productsThatQualifyBasketforDiscount.Quantity = 1;
var productNames = products.Select(x => x.Name).ToList();
productNames.Add(halfPriceDiscount._discountedProduct.Name);
productNames.Add(halfPriceDiscount._productsThatQualifyBasketforDiscount.Product.Name);
var disconts = new List <IDiscount>();
disconts.Add(halfPriceDiscount);
_productService.Setup(x => x.GetProductByName(halfPriceDiscount._discountedProduct.Name)).Returns(halfPriceDiscount._discountedProduct);
_productService.Setup(x => x.GetProductByName(halfPriceDiscount._productsThatQualifyBasketforDiscount.Product.Name)).Returns(halfPriceDiscount._productsThatQualifyBasketforDiscount.Product);
foreach (var item in products)
{
_productService.Setup(x => x.GetProductByName(item.Name)).Returns(item);
}
var sut = new ShoppingBasketService(_productService.Object);
var basket = sut.AddProducts(productNames.ToArray());
var sutD = new DiscountService();
// Act
var result = sutD.CalculateBasketDiscounts(basket, disconts);
var subTotalPrice = basket.Sum(item => item.Product.Price * item.Quantity);
var totalPrice = subTotalPrice - result.Sum(item => item.Amount);
var discontMessage = string.Join(" --- ", result.Select(x => x.Description));
// Assert
Assert.Equal(subTotalPrice - totalPrice, halfPriceDiscount._discountedProduct.Price * discountRate);
}
public void HalfPriceDiscount_DiscountedProduct_IsNull_ExceptionThrown()
{
// Arrange + Act + Assert
var halfPriceDiscount = new HalfPriceDiscount(new ProductQuantity(), null);
}
public void HalfPriceDiscount_ProductsThatQualifyBasketforDiscount_IsNull_ExceptionThrown()
{
// Arrange + Act + Assert
var halfPriceDiscount = new HalfPriceDiscount(null, new DiscountedProduct());
}
