public void EditDiscount() { Discount expected = new Discount("D103", DiscountTypeEnum.Hidden, DateTime.Parse("01/01/2018"), DateTime.Parse("31/12/2018"), 50, true); handler.AddDiscount(expected); Discount find = handler.GetDiscount("D103"); Assert.AreEqual(expected, find); expected.DiscountAmount = 30; handler.EditDiscountInDatabase(expected); find = handler.GetDiscount("D103"); Assert.AreEqual(expected, find); }