Not critical and it should be an easy fix, but I don't see what the problem is. File appears to be in proper format and matches the regex (?:^|[b_.-])[Tt]est). Running nosetests behaviorSim on my laptop just doesn't find it. nosetests -v and nosetests -vv are also of no help. The file in question is currently at ./behaviorSim/_util/tests/dataObject_test.py