public void VerifyNumberTest()
        {
            GuessGame game = new GuessGame();

            Assert.AreEqual(game.VerifyNumber(game.numberToChoice - 1), -1);
            Assert.AreEqual(game.VerifyNumber(game.numberToChoice + 1), 1);
            Assert.AreEqual(game.VerifyNumber(game.numberToChoice), 0);
        }