❔ How do I can use my class objects in UnitTest project?

using <projectName>;

// See https://aka.ms/new-console-template for more information
using System;
using System.Drawing;
using System.Numerics;
using System.Security.Cryptography;
using System.Text;
namespace testmati2709
{
    class Program
    {
        public class User
        {public Int64 ID;public String Name;public Boolean IsAdmin;}
        class Rezerwacja
        {
            public User MadeBy {get;set;}
            public Boolean CanBeCanceled(User u)
            {
                if(u.IsAdmin) { return true; }
                if(u == MadeBy) { return true; }
                return false;
            }
        }
        static void Main(string[] args)
        {
            User Karolina = new User();Karolina.IsAdmin = true;User Mateusz = new User();
            User Jurek = new User(); User Ola = new User();Ola.IsAdmin = true;
            Rezerwacja Reze = new Rezerwacja { MadeBy = Mateusz};
            Console.WriteLine(Reze.CanBeCanceled(Jurek));
        }
    }
}

using System.Reflection.Metadata;
namespace testmati2709.UnitTest
{
    public class Tests
    {
        [SetUp]
        public void Setup()
        {
        }
        [Test]
        public void Test1()
        {
            //a
            var uzytkownik1 = new User();
            //a
            //a
        }
    }
}

global using NUnit.Framework;
global using testmati2709;