WSUniversalLib/UnitTestWSUniversalLib/UnitTest1.cs

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

namespace UnitTestWSUniversalLib
{
    [TestClass]
    public class UnitTest1
    {
        [TestMethod]
        public void TestGetQuantityForProductIsInstanceOfType()
        {
            Assert.IsInstanceOfType(Calculation.GetQuantityForProduct(3, 1, 15, 20, 45), typeof(int));
        }

        [TestMethod]
        public void TestGetQuantityForProductIsNotInstanceOfTypeString()
        {
            Assert.IsInstanceOfType(Calculation.GetQuantityForProduct(3, 1, 15, 20, 45), typeof(int));
        }

        [TestMethod]
        public void TestGetQuantityForProductAreEqual()
        { 
            Assert.AreEqual(Calculation.GetQuantityForProduct(3, 1, 15, 20, 45), 114146);
        }

        [TestMethod]
        public void TestGetQuantityForProductAreNotEqual()
        { 
            Assert.AreNotEqual(Calculation.GetQuantityForProduct(3, 1, 15, 20, 45),999999);
        }

        [TestMethod]
        public void TestGetQuantityForProductIsNotNull()
        {
            Assert.IsNotNull(Calculation.GetQuantityForProduct(3, 1, 15, 20, 45));
        }
    }
}