public void DiscountForEmptyCart()
{
var cart = CommonInstansesCreator.GetCart();
var discount = new CartDiscount(cart, 50);
Assert.Equal(0, discount.GetCost());
}
public void DiscountWorks()
{
var cart = CommonInstansesCreator.GetCart();
var productRepository = CommonInstansesCreator.GetProductRepo();
var product = productRepository.FirstOrDefault();
var item = new CartItem {
Count = 2, Product = product
};
cart.AddProduct(new ProductDiscount(item, 50));
Assert.Equal(product.Cost, cart.GetCost());
}