So it took me almost three hours to find out why my pipeline component does not work correctly in the design time. It turns out its constructor has problem while initialize the enterprise library due to the ESB 2.1 installation. The problem is easy to fix but hard to discover, just a note.

So I refactored the bizunit a bit to allow for the following test step, source code I really like the NUnit.That asserts, look much comfortable compared to the old ones