public void WolfhoundDogBarkTest()
        {
            IDog   dog  = new Wolfhound();
            String bark = dog.Bark();

            Assert.AreEqual("The Wolfhound says Woof Woof", bark);
        }
        public void WolfHoundDogCreateTest()
        {
            IDog dog = new Wolfhound();

            Assert.IsInstanceOfType(dog, typeof(Wolfhound));
        }