public void TestMethod_CoinDetail()
        {
            VendingMachineProcess vendingMachingProcess = new VendingMachineProcess();
            int       coinSNo = 3;
            CoinModel result  = vendingMachingProcess.FindAndReturnCoin(coinSNo);

            Assert.AreEqual(result.Coin, "Quarters");
        }
        public void TestMethod_CoinDetail_Negative()
        {
            VendingMachineProcess vendingMachingProcess = new VendingMachineProcess();
            int       coinSNo     = 5;
            CoinModel result      = vendingMachingProcess.FindAndReturnCoin(coinSNo);
            string    finalResult = null;

            if (result != null)
            {
                finalResult = result.Coin;
            }
            Assert.AreEqual(finalResult, null);
        }