I get errors when running rake test_units:
test_destroy(LocationTest):
ActiveRecord::StatementInvalid: Mysql::Error: #23000Cannot delete or
update a pa
rent row: a foreign key constraint fails (overblijf_tst/groups,
CONSTRAINT fk _groups_locations FOREIGN KEY (location_id) REFERENCES locations
(id)): D
ELETE FROM locations
Any pointers??