public void BillWithNonGroseryItems() { //act _billingService.AddItem(new OtherItem { Name = "Laptop", Price = 50000 }); _billingService.AddItem(new OtherItem { Name = "Mobile", Price = 20000 }); var result = _billingService.GetBillDetails(); //assert Assert.AreEqual(result.TotalAmount, 70000.00m); Assert.AreEqual(result.TotalDiscount, 3500.00m); Assert.AreEqual(result.TotalAmount - result.TotalDiscount, 66500.00m); Assert.AreEqual(result.BillDiscount, 3500.00m); Assert.AreEqual(result.TotalBill, 63000.00m); }