old_contents: def configuration(parent_package='',top_path=None, package_name='models'):
      from numpy.distutils.misc_util import Configuration
      config = Configuration(package_name,parent_package,top_path)
  
      config.add_subpackage('*')
     
      return config
  
  if __name__ == '__main__':
  
      from numpy.distutils.core import setup
      setup(**configuration(top_path='', package_name='scipy.sandbox.models').todict())
  
new_contents: def configuration(parent_package='',top_path=None, package_name='models'):
      from numpy.distutils.misc_util import Configuration
      config = Configuration(package_name,parent_package,top_path)
  
      config.add_subpackage('*')
  
      config.add_data_dir('tests')
  
     
      return config
  
  if __name__ == '__main__':
  
      from numpy.distutils.core import setup
      setup(**configuration(top_path='', package_name='scipy.sandbox.models').todict())
  
subject: add the tests directory to setup.py