ConcurrentDictionary execution test

ConcurrentDictLogicTest.cs

namespace ConsoleApp1
{
    using System;
    using System.Collections.Concurrent;
    using System.Diagnostics;
    using System.Linq;
    using System.Threading;
    using System.Threading.Tasks;

    public class Program
    {
        public static void Main(string[] args)
        {
            Console.WriteLine("Test started:");
            ConcurrentReadWriteTest().Wait();
            Console.WriteLine("Press enter to exit");
            Console.ReadLine();
        }

        public static async Task ConcurrentReadWriteTest()
        {
            var dict = new ConcurrentDictionary<string, Metadata>();

            var count = 1000;

            dict.TryAdd(string.Empty, new Metadata());

            var updateTasks = Enumerable.Repeat(0, count).Select(
                _ => Task.Run(
                    () => dict.AddOrUpdate(
                        string.Empty,
                        (k) => new Metadata(),
                        (k, v) =>
                            {
                                // return new Metadata() { Version = v.Version + 1 };
                                v.Version++;
                                return v;
                            })));
            var deleteTasks = Enumerable.Repeat(0, count).Select(
                _ => Task.Run(
                    () => dict.AddOrUpdate(
                        string.Empty,
                        (k) => new Metadata(),
                        (k, v) =>
                            {
                                // return new Metadata() { Version = v.Version - 1 };
                                v.Version--;
                                return v;
                            })));

            await Task.WhenAll(updateTasks);
            await Task.WhenAll(deleteTasks);

            Metadata result;
            while (!dict.TryGetValue(string.Empty, out result))
            {
            }

            Console.WriteLine($"Results {result.Version}");
        }

        private class Metadata
        {
            public int Version { get; set; } = 0;
        }
    }
}