Thought this might be useful. On a new project where you're using the Castle Windsor container for Dependency Injection, this is a handy spec to have:
public class When_starting_the_application : Spec
public void verify_Castle_Windsor_mappings_are_correct()
IWindsorContainer container = new WindsorContainer("castle.xml");
foreach (IHandler handler in container.Kernel.GetAssignableHandlers(typeof(object)))
It doesn't guarantee that someone missed adding something to your configuration, but this way anytime someone adds a type to the configuration this will verify the mapping is right. Very often I move things around in the domain into different namespaces and forget to update Castle. I supposed you *could* use reflection on your assembly as another test and verify the mapping is there, but not every type in the system is going to be dependency injected so that's probably not feasible.
Thanks to the Castle guys for helping me get the simplest syntax going for this.