new_contents: # Copyright 2020 Google LLC
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     https://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License
  
  """Testing for custom_utils.py."""
  
  import unittest
  from unittest import TestCase
  import custom_utils
      
      
  class CustomUtilsTestCase(TestCase):
      def test_convert_to_POS(self):
          result = custom_utils.convert_to_POS(["This is a test string"])
          self.assertTrue(max(result) <= 40 and min(result) >= 3)
      
      
  if __name__ == '__main__':
      unittest.main()
  
subject: Create custom_utils_test.py