MbUnit now supports a simple way of running a single fixture (the one you are working on) without the need of a GUI or NUnitAddIn. The method is simple: tag your fixture class with the CurrentFixtureAttribute and launch it with the auto-runner:

Consider this little example:

[TestFixture]
public class MyFixture
{
   ...
}

1. Tag MyFixture with CurrentFixtureAttribute:
2. Convert the test assembly to a console application and add the following code to your main function:

   using System;
   namespace MbUnit.Tests
   {
       using MbUnit.Core;
       using MbUnit.Core.Filters;
       public class AutoRunTest
       {
           public static void Main(string[] args)
           {
               using(AutoRunner auto = new AutoRunner()) 
               {
                   auto.Domain.Filter = FixtureFilters.Current;
                   auto.Run();
                   auto.ReportToHtml();
               }
           }
       }
   }
   

3. Launch the console. The fixture will be executed and a HTML report of the tests will pop-out automatically.

(available in 2.18.1)