old_contents: from factories import post_factory, post
  
new_contents: from factories import post_factory, post
  import os
  import sys
  
  
  root = os.path.join(os.path.dirname(__file__))
  package = os.path.join(root, '..')
  sys.path.insert(0, os.path.abspath(package))
  
subject: Make the tests run just via py.test