A barely functional logger to standard out for xunit

XunitLogger.cs

using System;
using Microsoft.Extensions.Logging;
using Xunit.Abstractions;

namespace Example
{
    public class XunitLogger<T> : ILogger<T>
    {
        private readonly ITestOutputHelper _outputHelper;

        public XunitLogger(ITestOutputHelper outputHelper)
        {
            _outputHelper = outputHelper;
        }

        public IDisposable BeginScope<TState>(TState state) => throw new NotImplementedException();

        public bool IsEnabled(LogLevel logLevel) => true;

        public void Log<TState>(
            LogLevel logLevel,
            EventId eventId,
            TState state,
            Exception exception,
            Func<TState, Exception, string> formatter
        ) =>
            _outputHelper.WriteLine(
                $"{logLevel.ToString()[..3]}] {formatter.Invoke(state, exception)}\n\n{exception}");
    }
}

A similar hack around xunit's determined hostility:

using System.IO;
using System.Text;
using Xunit.Abstractions;

namespace Example
{
    public class XunitTextWriter : TextWriter
    {
        private readonly ITestOutputHelper _output;
        public XunitTextWriter(ITestOutputHelper output) => _output = output;
        public override Encoding Encoding { get; } = Encoding.UTF8;
        public override void WriteLine(string value) => _output.WriteLine(value);
    }
}