old_contents: import unittest
  from sparc.testing.fixture import test_suite_mixin
  
  
  class test_suite(test_suite_mixin):
      package = 'sparc.utils'
      module = 'attribute_copier'
  
  
  if __name__ == '__main__':
      unittest.main(defaultTest='test_suite')
new_contents: import os
  import zope.testrunner
  from sparc.testing.fixture import test_suite_mixin
  
  
  class test_suite(test_suite_mixin):
      package = 'sparc.utils'
      module = 'attribute_copier'
  
  
  if __name__ == '__main__':
      zope.testrunner.run([
                           '--path', os.path.dirname(__file__),
                           '--tests-pattern', os.path.splitext(
                                                  os.path.basename(__file__))[0]
                           ])
subject: update to fix standalone testing