public void DescribeIsCorrect(decimal baseAmount, decimal taxRate, decimal afterTax, string expectedDescription) { string filename = "The Little Prince"; int upc = 12345; PriceResult priceResult = new PriceResult(filename, upc, new MoneyCurrency(baseAmount), taxRate, new MoneyCurrency(afterTax)); Assert.Equal(expectedDescription, priceResult.Describe()); }