C#中进行单元测试

namespace ForTest
{
    public class Program
    {
        static void Main(string[] args)
        {
        }
        public int Say(int a, int b)
        {
            if (a < 50 && b > 60)
            {
                return a + b;
            }
            else
            {
                return a;
            }
        }
    }
}

using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace ForTest.Tests
{
    [TestClass()]
    public class ProgramTests
    {
        [TestMethod()]
        public void SayTest()
        {
            Program p = new Program();
            int a = 20;
            int b = 80;
            int c = p.Say(a, b);
            Assert.AreEqual(c, a + b);
        }

        [TestMethod()]
        public void SayTest1()
        {
            Program p = new Program();
            int a = 80;
            int b = 80;
            int c = p.Say(a, b);
            Assert.AreEqual(c, a);
        }
    }
}