using System;

namespace ConsoleApp1
{
    internal class Program
    {
        static void Main(string[] args)
        {
            for (var i = 0; i < 100; i++)
            {
                bool should = Should();
                Test? test = ShouldTest();
                int? testId = should ? (int?)test : null; // incorrect IDE0004

                Console.WriteLine($"should: {should}, test: {test}, testId: {testId}");
            }
        }

        private static bool Should()
        {
            return new Random().Next() % 2 == 0;
        }

        private static Test? ShouldTest()
        {
            var value = new Random().Next(3);
            if (Enum.IsDefined(typeof(Test), value))
                return (Test)value;

            return null;
        }
    }

    public enum Test
    {
        Foo = 1,

        Bar = 2,
    }
}