public void ByWeightLineItemWithBulkDiscountHasCorrectPriceTest()
{
// Arrange
const int id = 1;
const double weightInKilos = 2.00;
// pricePerKilo = 5.00m
ILineItem byWeightLineItem = new ByWeightLineItem(id, weightInKilos);
const decimal expectedPrice1 = 9.00m;
const decimal expectedPrice2 = 10.00m;
// Lineitem is above bulk discount threshold of $20.00, therefore has 10% discount
BulkDiscountLineItem bulkDiscountLineItem1 = new BulkDiscountLineItem(byWeightLineItem)
{
DiscountThreshold = 10.00m,
DiscountPercentage = 10
};
// Lineitem is below bulk discount threshold of $40.00, therefore has no discount
BulkDiscountLineItem bulkDiscountLineItem2 = new BulkDiscountLineItem(byWeightLineItem)
{
DiscountThreshold = 20.00m,
DiscountPercentage = 10
};
// Act
decimal actualPrice1 = bulkDiscountLineItem1.GetPrice();
decimal actualPrice2 = bulkDiscountLineItem2.GetPrice();
// Assert
Assert.Multiple(() =>
{
Assert.That(actualPrice1, Is.EqualTo(expectedPrice1));
Assert.That(actualPrice2, Is.EqualTo(expectedPrice2));
});
}
public void ByWeightLineItemWithCouponDiscountHasCorrectPriceTest()
{
// Arrange
// pricePerKilo = 5.00m
ILineItem byWeightLineItem1 = new ByWeightLineItem(1, 2.00);
ILineItem byWeightLineItem2 = new ByWeightLineItem(1, 8.00);
const decimal expectedPrice1 = 10.00m;
const decimal expectedPrice2 = 25.00m;
// Does not qualify for discount since price < discount
CouponDiscountLineItem couponDiscountLineItem1 = new CouponDiscountLineItem(byWeightLineItem1)
{
CouponDiscount = 15.00m
};
// Qualifies for discount since price > discount
CouponDiscountLineItem couponDiscountLineItem2 = new CouponDiscountLineItem(byWeightLineItem2)
{
CouponDiscount = 15.00m
};
// Act
decimal actualPrice1 = couponDiscountLineItem1.GetPrice();
decimal actualPrice2 = couponDiscountLineItem2.GetPrice();
// Assert
Assert.Multiple(() =>
{
Assert.That(actualPrice1, Is.EqualTo(expectedPrice1));
Assert.That(actualPrice2, Is.EqualTo(expectedPrice2));
});
}
public void ByWeightLineItemHasCorrectPriceTest()
{
// Arrange
const int id = 1;
const double weightInKilos = 5.0;
ILineItem byWeightLineItem = new ByWeightLineItem(id, weightInKilos);
const decimal expectedPrice = 25.00m;
// Act
decimal actualPrice = byWeightLineItem.GetPrice();
// Assert
Assert.That(actualPrice, Is.EqualTo(expectedPrice));
}
public void ShoppingCartWithByWeightLineItemHasCorrectPriceTest()
{
// Arrange
IShoppingCart shoppingCart = new ShoppingCart();
ILineItem byWeightLineItem = new ByWeightLineItem(1, 5);
const decimal expectedPrice = 25.00m;
// Act
shoppingCart.Add(byWeightLineItem);
decimal actualPrice = shoppingCart.GetPrice();
// Assert
Assert.That(actualPrice, Is.EqualTo(expectedPrice));
}
