public void Calculate_Cart_Total()
{
// Arrange
Product p1 = new Product {
ProductId = 1, Name = "P1", Price = 100m
};
Product p2 = new Product {
ProductId = 2, Name = "P2", Price = 50m
};
CartModel cart = new CartModel();
cart.AddItem(p1, 1);
cart.AddItem(p2, 1);
cart.AddItem(p1, 10);
// Act
decimal total = cart.ComputeTotalValue();
// Assert
Assert.Equal(1150, total);
}
