velopack/test/TestApp/ConsoleLogger.cs

using Microsoft.Extensions.Logging;

class ConsoleLogger : ILogger
{
    public IDisposable BeginScope<TState>(TState state) where TState : notnull
    {
        return null;
    }

    public bool IsEnabled(LogLevel logLevel)
    {
        return true;
    }

    public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception exception, Func<TState, Exception, string> formatter)
    {
        Console.WriteLine(formatter(state, exception));
    }
}