test1/UnitTestProject1/UnitTest1.cs

using Microsoft.VisualStudio.TestTools.UnitTesting;
using System;
using WSUniversalLib;

namespace WSUniversalLib
{
    [TestClass]
    public class UnitTest1
    {
        [TestMethod]
        public void GetQuantityForProduct_NonExistentProductType1() 
        {
            Calculation calculation = new Calculation();
            Assert.AreEqual(1, calculation.GetQuantityForProduct(1,1,1,1,1));
        }
        [TestMethod]
        public void GetQuantityForProduct_NonExistentProductType2() 
        {
            Calculation calculation = new Calculation();
            Assert.AreEqual(2, calculation.GetQuantityForProduct(1,1,2,1,1));
        }



    }
}