using System;

using System.Xml.Linq;

using FluentAssertions;

using FluentAssertions.Primitives;

public class Program

{

    public static void Main()

    {

        var str = "Hello, world!";

        var test = new TestClass

        {

            TestValue = "Hello, world!"

        };

        Program.Assert(test, test);

        Console.WriteLine("Pass");

        Program.Assert(test, new TestClass());

        Console.WriteLine("Fail");

    }

    public static AndConstraint<ObjectAssertions> Assert(object input, object expected)

    {

        return input.Should().Be(expected);

    }

    public class TestClass

    {

        public string TestValue { get; set; }

    }

}