Standard idiom for testing individual functions?

[Jeremy Fincher]

I've read Diving Into Python, but I'd rather get a second opinion on
Unit Testing.  I have a module that's basically a collection of useful
functions, and I'd like to write some unit tests (based on the
unittest module, of course :)) for them.  Right now, I have an
individual TestCase for each function, but is there an easier way?  If
there is, can someone show me an example of it?

Thanks!

Jeremy