How do I diagnose test errors?

[Peter Arrenbrecht]

>> OK, I'll think about this. I also have ideas on how I can change some
>> of the tests to use doctest or unittest (without altering the
>> whole-operation testing approach, just to make it easier to run them
>> on Windows without special support), I might look at the whole area of
>> testing next, once the case folding changes are OK. But I won't mess
>> with anything without discussing it.
>
> We already have a few doctests, I think. Not sure what Matt would
> think about using unittests.

Having a way to cite actual tested input and output in documentation
would be great!
(See http://arrenbrecht.ch/jcite/ for my take on this for Java.)

-parren