A related but different bug: instead of a syntax error (that would raise during import time) cause an invalid test_suite to be returned (e.g. return None) and try bin/test -D. Same error, different place.
A related but different bug: instead of a syntax error (that would raise during import time) cause an invalid test_suite to be returned (e.g. return None) and try bin/test -D. Same error, different place.