new_contents: #!/usr/bin/env python
  # -------------------------------------------------------------------------------
  # Name:        test_comp.py
  # Purpose:     testing file for the wradlib.comp module
  #
  # Authors:     wradlib developers
  #
  # Created:     26.02.2016
  # Copyright:   (c) wradlib developers
  # Licence:     The MIT License
  # -------------------------------------------------------------------------------
  
  import unittest
  
  import wradlib.vpr as vpr
  import wradlib.georef as georef
  import numpy as np
  
  class ComposeTest(unittest.TestCase):
      def test_extract_circle(self):
          pass
  
      def test_togrid(self):
          pass
  
      def compose_ko(self):
          pass
  
      def compose_weighted(self):
          pass
  
  
  if __name__ == '__main__':
      unittest.main()
  
subject: add test_comp.py, add test function stubs