new_contents: import extractor
  import unittest
  
  
  class ExtractUfoTest(unittest.TestCase):
  
      # TODO: replace this with real test cases
      def test_extractUFO_dummy_test(self):
          self.assertTrue(True)
  
  
  if __name__ == "__main__":
      unittest.main()
  
subject: add 'tests' folder for unit test modules (empty for now)