Bootstrap_Kata.cs

using Castle.Core;
using Castle.Core.Internal;
using Castle.MicroKernel;
using Castle.MicroKernel.Facilities;
using Castle.MicroKernel.Registration;
using Castle.Windsor;

using System;
using System.Collections.Generic;
using System.Threading;
using Castle.DynamicProxy;

namespace Prover.SpecWriter {
  public static class WindsorContainerFactory {
    public static IWindsorContainer GetTracingContainer(params IRegistration[] registrations) {
      var container = new WindsorContainer();
      container.AddFacility<SpecWriterFacility>();
      if (registrations != null) container.Register(registrations);
      return container;
    }
  }
  /// <summary>
  ///   Bootstrapper for the integration test tracing infrastructure
  /// </summary>
  public class SpecWriterFacility
    : AbstractFacility {
    public const string InterceptorKey = "tracert-interceptor";

    protected override void Init() {
      Kernel.Register(Component.For<RecordingInterceptor>().Named(InterceptorKey)
                               .LifeStyle.Singleton);
      Kernel.ComponentRegistered += Kernel_ComponentRegistered;
    }

    void Kernel_ComponentRegistered(string key, IHandler handler) {
      if (handler.ComponentModel.Implementation.HasAttribute<RecordInteractionsAttribute>()) {
        handler.ComponentModel.Interceptors.Add(new InterceptorReference(InterceptorKey));
      }
    }
  }
  public class RecordingInterceptor
    : IInterceptor {
    void IInterceptor.Intercept(IInvocation invocation) {
      invocation.Proceed();
    }
  }
  [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = false)]
  public class RecordInteractionsAttribute
    : Attribute {
  }
}

gistfile1.txt

PS C:\Users\haf\Documents\Visual Studio 2012\Projects\MSpecSample> .\packages\Machine.Specifications.0.5.10\tools\mspec-clr4.exe .\bin\Debug\MSpecSample.dll

Specs in MSpecSample:

When getting random number
» should return less than ten

Contexts: 1, Specifications: 1, Time: 0.14 seconds

Usage.cs

container.Register(Component.For<MyServiceInterface>().ImplementedBy<MyClass>());

// using code above:
WindsorContainerFactory.GetTracingContainer(Component.For<MyServiceInterface>().ImplementedBy<MyClass>());

// using MSpec

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Machine.Specifications;

namespace MSpecSample
{
    public class FiveFactory
    {
  	public static int GetRandomNumber()
		{
			return 5;
		}
    }

	public class When_getting_random_number
	{
		It should_return_less_than_ten =
			() => FiveFactory.GetRandomNumber()
			                 .ShouldBeLessThan(10);
	}
}