public void ClubMember10PercentDiscountTest()
        {
            // Arrange
            var priceCalculator = new PriceCalculator();
            var customer        = new Customer()
            {
                ClubMember = true
            };
            var product = new Product()
            {
                Price = 10.00M
            };


            // Act
            var price = priceCalculator.GetPrice(product, customer);

            // Assert
            Assert.AreEqual(9.00M, price);
        }