wabbajack/Wabbajack.App.Test/Startup.cs

using System.Collections.Generic;
using Avalonia.Threading;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Wabbajack.App;
using Wabbajack.Networking.WabbajackClientApi;
using Wabbajack.Services.OSIntegrated;
using Xunit.DependencyInjection;
using Xunit.DependencyInjection.Logging;

namespace Wabbajack.App.Test
{
    public class Startup
    {
        public void ConfigureServices(IServiceCollection service)
        {
            service.AddAppServices();
        }

        public void Configure(ILoggerFactory loggerFactory, ITestOutputHelperAccessor accessor)
        {
            loggerFactory.AddProvider(new XunitTestOutputLoggerProvider(accessor, delegate { return true; }));
            MessageBus.Instance = new SimpleMessageBus();
        }
    }

    public class SimpleMessageBus : IMessageBus
    {
        public List<object> Messages { get; } = new();
        public void Send<T>(T message)
        {
            Messages.Add(message);
        }
    }
}