new_contents: import unittest
  import logging
  from brew_thermometer.logging import _get_log_level
  
  
  class TestLogging(unittest.TestCase):
      def test__get_log_level_debug(self):
          self.assertEqual(_get_log_level('debug'), logging.DEBUG,
                           msg="_get_log_level() should return logging.DEBUG if provided 'debug'")
  
      def test__get_log_level_info(self):
          self.assertEqual(_get_log_level('info'), logging.INFO,
                           msg="_get_log_level() should return logging.INFO if provided 'info'")
  
      def test__get_log_level_warning(self):
          self.assertEqual(_get_log_level('warning'), logging.WARNING,
                           msg="_get_log_level() should return logging.WARNING if provided 'warning'")
  
      def test__get_log_level_error(self):
          self.assertEqual(_get_log_level('error'), logging.ERROR,
                           msg="_get_log_level() should return logging.ERROR if provided 'error'")
  
      def test__get_log_level_critical(self):
          self.assertEqual(_get_log_level('critical'), logging.CRITICAL,
                           msg="_get_log_level() should return logging.CRITICAL if provided 'critical'")
  
  if __name__ == '__main__':
      unittest.main()
  
subject: add test for config log level conversion to logging module log levels