public void BuyTwoGetOneFree(decimal price, int count, int expectedCount, decimal expectedPrice)
{
var product = new ProductEntity {
Price = price
};
var record = new BasketRecordEntity {
Count = count, Product = product
};
var basket = new BasketEntity
{
Records = new[] { record }
};
var percentageDiscount = new DiscountEntity
{
Type = DiscountEntityType.BuyTwoGetOneForFree,
TargetProduct = product,
RewardProduct = product,
};
var dbPrice = _sut.CalculatePrice(basket);
var basketModel = _sut.CalculatePriceWithDiscounts(basket, new[] { percentageDiscount });
var basketModelPrice = _sut.CalculatePrice(basketModel);
var basketModelProductCount = basketModel.Records[0].Count + basketModel.Records[0].FreeProducts.Count;
dbPrice.Should().Be(price * record.Count);
basketModelPrice.Should().Be(expectedPrice);
basketModelProductCount.Should().Be(expectedCount);
}
public void Percentage(decimal price, decimal percentage, decimal expected)
{
var product = new ProductEntity {
Price = price
};
var record = new BasketRecordEntity {
Count = 1, Product = product
};
var basket = new BasketEntity
{
Records = new[] { record }
};
var percentageDiscount = new DiscountEntity
{
Type = DiscountEntityType.Percentage,
Percentage = percentage,
TargetProduct = product
};
var dbPrice = _sut.CalculatePrice(basket);
var basketModel = _sut.CalculatePriceWithDiscounts(basket, new[] { percentageDiscount });
var basketModelPrice = _sut.CalculatePrice(basketModel);
dbPrice.Should().Be(price);
basketModelPrice.Should().Be(expected);
}
public BasketRecordModel Apply(BasketRecordEntity record, DiscountEntity entity)
{
var discountAmount = record.Product.Price * entity.Percentage / 100;
record.Product.Price -= discountAmount;
return(new BasketRecordModel(record.Count, new ProductModel(record.Product.Price)));
}
public BasketRecordModel Apply(BasketRecordEntity record, DiscountEntity entity)
{
var recordModel = new BasketRecordModel(record.Count, new ProductModel(record.Product.Price));
var amountOfItemsToDiscount = (int)Math.Floor(record.Count / 2f);
for (int i = 0; i < amountOfItemsToDiscount; i++)
{
recordModel.FreeProducts.Add(new ProductModel(entity.RewardProduct.Price));
}
return(recordModel);
}
public bool IsApplicable(BasketRecordEntity record, DiscountEntity entity)
{
return(record.Product.Id == entity.TargetProduct.Id);
}
