static void Main(string[] args) { var clients = Mocker.Mocker <Client> .Mock() as List <Client>; var products = Mocker.Mocker <Product> .Mock() as List <Product>; var shoppingCart = Mocker.Mocker <ShoppingCart> .Mock(clients, products, 10) as ShoppingCart; var soma = shoppingCart.Products.Sum(p => p.Price); var somaDesconto = ProductBusiness.CalculateTotal(shoppingCart.Products); }