static void Main(string[] args)
{
Customer customer1 = new Customer("Kirsi Kernel");
customer1.AddItem(new InvoiceItem("Milk", 1.75f, 1));
customer1.AddItem(new InvoiceItem("Beer", 5.25f, 1));
customer1.AddItem(new InvoiceItem("Butter", 2.5f, 2));
Console.WriteLine(customer1.ToString());
}
public void TotalSumTest()
{
Customer customer1 = new Customer("Kirsi Kernel");
customer1.AddItem(new InvoiceItem("Milk", 1.75f, 1));
customer1.AddItem(new InvoiceItem("Beer", 5.25f, 2));
float price1 = 1.75f;
float price2 = 5.25f;
float amount1 = 1;
float amount2 = 2;
float expected = price1 * amount1 + price2 * amount2;
Assert.AreEqual(expected, customer1.TotalSum());
}