[Twisted-Python] How do I write AMP Command definitions TTD-edly?

Hi, I have no issue writing AMP responders TTD-edly, they work pretty much the way any other code would. However, I did notice that the only way I'd notice if my Command definitions themselves were broken were if my functional tests start failing. It would be nice if I could write unit test driven Command specifications, as well. The quickest I could come up with was to call makeArguments/makeResponse with a few known-good/known-bad dictionaries, and see if it blows up. Is there a smarter way to do it? -- cheers lvh