Args.AppliedDiscount AppliedDiscount(
Product product, BasketDiscount basketDiscount, int times, decimal basketItemNewPrice) =>
new Args.AppliedDiscount
{
ProductId = product.Id,
DiscountId = basketDiscount.Id,
NumberOfBasketItemsThatShouldReceiveIt = times,
BasketItemPrice = basketItemNewPrice
};
public async Task Run()
{
var butter = Product(1, 0.8m);
var milk = Product(2, 1.15m);
var bread = Product(3, 1);
var twoButtersDiscount = new BasketDiscount
{
Id = 1,
RequiredProductId = butter.Id,
TargetProductId = bread.Id,
RequiredPerOneDiscounted = 2,
TargetProductDiscountedBy = 0.5m
};
var threeMilksDiscount = new BasketDiscount
{
Id = 2,
RequiredProductId = milk.Id,
TargetProductId = milk.Id,
RequiredPerOneDiscounted = 3,
TargetProductDiscountedBy = 1
};
var otherDiscounts = new[]
{
new BasketDiscount
{
Id = 3,
RequiredProductId = butter.Id,
TargetProductId = butter.Id,
RequiredPerOneDiscounted = 5,
TargetProductDiscountedBy = 2
},
new BasketDiscount
{
Id = 4,
RequiredProductId = Product(6, -1).Id,
TargetProductId = butter.Id,
RequiredPerOneDiscounted = 5,
TargetProductDiscountedBy = 2
},
};
void AddBaseArgs(Args a)
{
a.Products = new[] { butter, milk, bread, Product(4, -1), Product(5, -1) };
a.Discounts = new[] { twoButtersDiscount, threeMilksDiscount }.Concat(otherDiscounts);
}
await RunWithArgs(a =>
{
AddBaseArgs(a);
a.BasketItems = new[] { BasketItem(bread), BasketItem(butter), BasketItem(milk) };
a.AppliedDiscounts = new Args.AppliedDiscount[0];
a.ExpectedBasketPrice = 2.95m;
});
await RunWithArgs(a =>
{
AddBaseArgs(a);
a.BasketItems = new[] { BasketItem(butter), BasketItem(butter), BasketItem(bread), BasketItem(bread) };
a.AppliedDiscounts = new[]
{
AppliedDiscount(bread, twoButtersDiscount, 1, 0.5m),
};
a.ExpectedBasketPrice = 3.10m;
});
await RunWithArgs(a =>
{
AddBaseArgs(a);
a.BasketItems = GenerateSequence(() => BasketItem(milk), 4);
a.AppliedDiscounts = new[]
{
AppliedDiscount(milk, threeMilksDiscount, 1, 0)
};
a.ExpectedBasketPrice = 3.45m;
});
await RunWithArgs(a =>
{
AddBaseArgs(a);
a.BasketItems = GenerateSequence(() => BasketItem(milk), 8)
.Append(BasketItem(butter))
.Append(BasketItem(butter))
.Append(BasketItem(bread))
;
a.AppliedDiscounts = new[]
{
AppliedDiscount(bread, twoButtersDiscount, 1, 0.5m),
AppliedDiscount(milk, threeMilksDiscount, 2, 0)
};
a.ExpectedBasketPrice = 9.00m;
});
}