public void AddToppingsTest()
 {
     Assert.True(Utility.AreEqual(cheesePizza.AddToppings(), CheesePizzaAddToppingString));
 }
 public void AddToppingsTest()
 {
     Assert.True(Utility.AreEqual(pepperoniPizza.AddToppings(), PepperoniPizzaAddToppingsString));
 }
 public void AddToppingsTest()
 {
     Assert.True(Utility.AreEqual(vegiePizza.AddToppings(), VeggiePizzaAddToppingsString));
 }