CliFx/CliFx.Tests.Dummy/Commands/ConsoleTestCommand.cs

using System;
using System.Threading.Tasks;
using CliFx.Attributes;

namespace CliFx.Tests.Dummy.Commands
{
    [Command("console-test")]
    public class ConsoleTestCommand : ICommand
    {
        public ValueTask ExecuteAsync(IConsole console)
        {
            var input = console.Input.ReadToEnd();

            console.WithColors(ConsoleColor.Black, ConsoleColor.White, () =>
            {
                console.Output.WriteLine(input);
                console.Error.WriteLine(input);
            });

            return default;
        }
    }
}