public void AddTest()
{
var product1 = new ProductModel {
Id = Guid.NewGuid(), Name = "product1", Price = 1m
};
var product2 = new ProductModel {
Id = Guid.NewGuid(), Name = "product2", Price = 2m
};
var discount1 = new DiscountModel {
Code = "discount1", Percents = 0.50m
};
var discount2 = new DiscountModel {
Code = "discount2", Percents = 0.25m
};
_shoppingCartService.AddProduct(product1);
_shoppingCartService.AddProduct(product2);
_shoppingCartService.AddProductDiscount(product1, discount1);
_shoppingCartService.AddProductDiscount(product2, discount2);
var shoppingCart = _shoppingCartService.GetShoppingCart();
Assert.AreEqual(shoppingCart.Products.ElementAt(0), product1);
Assert.AreEqual(shoppingCart.Products.ElementAt(1), product2);
Assert.AreEqual(shoppingCart.Products.ElementAt(0).Discount, discount1);
Assert.AreEqual(shoppingCart.Products.ElementAt(1).Discount, discount2);
}