[R] Test suites

[Giles Heywood]

I have a collection of functions, class definitions and methods which I
would like to test systematically for their correctness after changes to
their code, and also after major R revisions.  I believe that the correct
term for these systematic tests (as opposed to more informal tests) is a
'test suite'.  Does anyone [apart from Pat Burns :-) ] have code, or
templates, or specific suggestions for the best approach to constructing
test suites?

Thanks in advance

Giles Heywood