public void ShouldCalculateTaxOnPerfume2()
        {
            var perfume = new Perfume {
                Id = 6, Name = "perfume", Price = 27.99m, IsImported = true
            };

            Assert.AreEqual(4.2m, Taxes.ComputeSalesTax(perfume));
        }
        public void ShouldCalculateTaxOnImportedChocolates()
        {
            var chocolates = new Food {
                Id = 4, Name = "chocolates", Price = 10.0m, IsImported = true
            };

            Assert.AreEqual(0.5m, Taxes.ComputeSalesTax(chocolates));
        }
        public void ShouldCalculateTaxOnPerfume()
        {
            var perfume = new Perfume {
                Id = 5, Name = "perfume", Price = 47.5m, IsImported = true
            };

            Assert.AreEqual(7.15m, Taxes.ComputeSalesTax(perfume));
        }
        public void ShouldCalculateTaxOnMusic()
        {
            var musicCd = new Music {
                Id = 2, Name = "music CD", Price = 14.99m
            };

            Assert.AreEqual(1.5m, Taxes.ComputeSalesTax(musicCd));
        }