public void TestCancelOrder() { CurrentOrder <SushiItem> order = new CurrentOrder <SushiItem>(); SushiItem item = new SushiItem("name", 12.8); uint quantity = 12; order.OrderSomething(item, quantity); OrderEntity <SushiItem> thisOrder = new OrderEntity <SushiItem>(item, quantity); order.CancelOrder(thisOrder); Assert.IsTrue(order.TotalSum == 0.00 && order.Order.Count == 0); }