Finding class symbols dynamically

[jerseycat10]

Greetings.

We are in the midst of updating our automated test suite. One
capability we would like to add is to have n test methods per test
class. We faintly remembered there being some kind of struct that
could be iterated through, providing a list of class symbols
dynamically in realtime. Does such a thing exist? We would iterate
through the symbols, looking for ones beginning with "test_".

Thanks.