using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.Serialization.Formatters;

using System.IO;

using System.Data;

using System.ComponentModel.DataAnnotations;

using System.Globalization;

using System.Reflection;

using System.Collections.ObjectModel;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

using NUnit.Framework; // Throws NUnit.Framework.AssertionException

​

//https://stackoverflow.com/questions/62079961/why-does-jsonconvert-treat-default-constructors-and-other-constructors-inherentl

​

    [JsonObject(IsReference = true)]

    public class Scenario

    {

        // Remainder unchanged

    }

​

    public class ReferenceTesting

    {

        public List<Scenario> scenarios = new List<Scenario>();

        private Dictionary<Scenario, float> _Dict = new Dictionary<Scenario, float>();

​

        public KeyValuePair<Scenario, float> [] SerializedDict

        {

            get { return _Dict.ToArray(); }

            set { _Dict = value.ToDictionary(x => x.Key, x => x.Value);  }

        }

​

        public ReferenceTesting() : this(0) { }

        public ReferenceTesting(int number = 0)

        {

            for (int i = 0; i < number; i++)

            {

                Scenario s1 = new Scenario();

                scenarios.Add(s1);

                _Dict.Add(s1, i);

            }

        }

        public override string ToString()

        {

            string s = "";

            for (int i = 0; i < scenarios.Count; i++)

            {

                Scenario scenario = scenarios[i];

                s += $"scenario{i} \n";

            }

            foreach (KeyValuePair<Scenario, float> scenario in SerializedDict)

            {

                s += $"Key: {scenario.Key}, Value: {scenario.Value} \n";

            }

            return s;

        }

    }

​

    class TestClass

    {

        public static void Test()

        {

            var test = new ReferenceTesting(3);

            foreach (var item in test.SerializedDict.Select(p => p.Key))

                Assert.IsTrue(test.scenarios.Contains(item));

            var json = JsonConvert.SerializeObject(test, Formatting.Indented);

            Console.WriteLine(json);

            var test2 = JsonConvert.DeserializeAnonymousType(json, test);

            Console.WriteLine("Deserialized {0}:", test2.GetType());

            Console.WriteLine(test2);

            foreach (var item in test2.SerializedDict.Select(p => p.Key))

                Assert.IsTrue(test2.scenarios.Contains(item));

            Assert.IsTrue(test.SerializedDict.Length == test2.SerializedDict.Length);

            Assert.IsTrue(test.scenarios.Count == test2.scenarios.Count);

        }   

    }

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: {0} ({1})", System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription , GetNetCoreVersion());

            Console.WriteLine("{0} version: {1}", typeof(JsonSerializer).Assembly.GetName().Name,  typeof(JsonSerializer).Assembly.FullName);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

                Console.WriteLine("Failed with unhandled exception: ");

                Console.WriteLine(ex);

                throw;

            }

        }

        public static string GetNetCoreVersion()

        {

            //https://techblog.dorogin.com/how-to-detect-net-core-version-in-runtime-ecd65ad695be

            //

            var assembly = typeof(System.Runtime.GCSettings).GetTypeInfo().Assembly;

            var assemblyPath = assembly.CodeBase.Split(new[] { '/', '\\' }, StringSplitOptions.RemoveEmptyEntries);

            int netCoreAppIndex = Array.IndexOf(assemblyPath, "Microsoft.NETCore.App");

            if (netCoreAppIndex > 0 && netCoreAppIndex < assemblyPath.Length - 2)

                return assemblyPath[netCoreAppIndex + 1];

            return null;

        }

    }

​