private bool GetIsValidPromotion(ComboPromotion promotion)
{
var result = comboPromotions
.FirstOrDefault(i => new ComboComparer().Compare(i, promotion) == 0);
return(result == null);
}
public double CalculateTotalOrderAmount(List <Cart> cartItems)
{
double result = 0;
var cartWithPromotion = AllocatePromotions(cartItems);
// quantity promotion
IPromotionStrategy qunatityPromotion = new QuantityPromotion(_query);
result += qunatityPromotion.ApplyPromotion(cartWithPromotion);
// quantity promotion
IPromotionStrategy comboPromotion = new ComboPromotion(_query);
result += comboPromotion.ApplyPromotion(cartWithPromotion);
return(result);
}
public void Setup()
{
CartScenario1 = new Cart();
CartScenario2 = new Cart();
CartScenario3 = new Cart();
var a = new Item("A", 50);
var b = new Item("B", 30);
var c = new Item("C", 20);
var d = new Item("D", 15);
var promotion1 = new PriceForQuantityPromotion(a, 3, 130);
var promotion2 = new PriceForQuantityPromotion(b, 2, 45);
var promotion3 = new ComboPromotion(new List <Tuple <Item, int> > {
Tuple.Create(c, 1), Tuple.Create(d, 1)
}, 30);
var promotions = new List <Promotion>()
{
promotion1, promotion2, promotion3
};
CartScenario1.AddPromotions(promotions);
CartScenario2.AddPromotions(promotions);
CartScenario3.AddPromotions(promotions);
CartScenario1.AddItem(new CartItem(a, 1));
CartScenario1.AddItem(new CartItem(b, 1));
CartScenario1.AddItem(new CartItem(c, 1));
CartScenario2.AddItem(new CartItem(a, 5));
CartScenario2.AddItem(new CartItem(b, 5));
CartScenario2.AddItem(new CartItem(c, 1));
CartScenario3.AddItem(new CartItem(a, 3));
CartScenario3.AddItem(new CartItem(b, 5));
CartScenario3.AddItem(new CartItem(c, 1));
CartScenario3.AddItem(new CartItem(d, 1));
}
public ComboPromotionService(ComboPromotion promotion)
{
Promotion = promotion;
}
