Custom SpecFlow listener and "logging" class to reduce noise when running SpecFlow tests from the command line.

SpecFlow.Hooks.cs

using TechTalk.SpecFlow;

namespace MyCompany.SpecFlowTests
{
    [Binding]
    public static class Hooks
    {
        [BeforeFeature]
        public static void BeforeFeature()
        {
            Console.WriteLine();
            Console.WriteLine("Feature: " + FeatureContext.Current.FeatureInfo.Title);
        }
    }
}

SpecFlow.ScenarioLog.cs

using System;
using System.Collections.Generic;
using TechTalk.SpecFlow;

namespace MyCompany.SpecFlowTests
{
    using LogBuffer = List<string>;

    [Binding]
    internal static class ScenarioLog
    {
        public static void Write(string format, params object[] args)
        {
            if (ScenarioContext.Current != null)
            {
                var message = String.Format(format, args);

                if (!ScenarioContext.Current.ContainsKey(ScenarioLogKey))
                    ScenarioContext.Current[ScenarioLogKey] = new LogBuffer();

                var log = (LogBuffer)ScenarioContext.Current[ScenarioLogKey];

                log.Add(message);
            }
        }

        [AfterScenario]
        public static void HandleScenarioFailure()
        {
            if (ScenarioContext.Current.TestError != null)
                DumpLog();
        }

        private static void DumpLog()
        {
            if (ScenarioContext.Current.ContainsKey(ScenarioLogKey))
            {
                Console.WriteLine("\nScenario: {0}", ScenarioContext.Current.ScenarioInfo.Title);

                var log = (LogBuffer)ScenarioContext.Current[ScenarioLogKey];

                foreach (var message in log)
                    Console.WriteLine(message);
            }
        }

        private const string ScenarioLogKey = "ScenarioLog";
    }
}

SpecFlow.TraceListener.cs

using System;
using TechTalk.SpecFlow;
using TechTalk.SpecFlow.Tracing;

// <specFlow>
//     <trace traceSuccessfulSteps="false" listener="MyCompany.SpecFlowTests.SpecFlowTestListener, MyCompany.SpecFlowTests" />
// </specFlow>

namespace MyCompany.SpecFlowTests
{
    public class SpecFlowTestListener : ITraceListener
    {
        public AcceptanceTestListener()
        {
            var disableTrace = Environment.GetEnvironmentVariable(DisableTraceVariable);

            if (String.IsNullOrWhiteSpace(disableTrace))
                _listener = new DefaultListener();
        }

        public void WriteTestOutput(string message)
        {
            if (_listener != null)
                _listener.WriteTestOutput(message);
        }

        public void WriteToolOutput(string message)
        {
            if (_listener != null)
                _listener.WriteToolOutput(message);
        }

        private readonly ITraceListener _listener;

        private const string DisableTraceVariable = "DISABLE_SPECFLOW_TRACE_OUTPUT";
    }
}

seems like this will not work any more with specflow 3