MyClassTest.cs

using dotnet_ci_sample;
using System;
using Xunit;

namespace test
{
    public class UnitTest1
    {
        [Fact]
        public void SayTest()
        {
            var expected = "Hello yuta!!";
            var actual = MyClass.Say("yuta");
            Assert.Equal(expected, actual);
        }
    }
}