public void Test_SupremePizza()
        {
            var sut = new SupremePizza();

            Assert.NotNull(sut.Crust);
            Assert.NotNull(sut.Size);
            Assert.NotNull(sut.Toppings);
        }
        private void Test_SupremePizzaExists()
        {
            // arrange
            Size         size         = new Size("Small");
            string       crust        = "Garlic";
            SupremePizza supremepizza = new SupremePizza(size, crust);

            Assert.Equal(size, supremepizza.Size);
            Assert.Equal(crust, supremepizza.Crust);
        }