I just uploaded my first release of an automated test harness for the
openACS3.x code base. Its based largely on Lars Pinds acs-test-harness
code for the ACS4.0 (dating from august of 2000).
its available in the new-file-storage module:
https://openacs.org/new-file-storage/one-file?file_id=348
Let me know if you like it, or if you find bugs.
Cheers,