new_contents: """Module for enhancement UI."""
  import logging
  import unittest
  
  import mock
  
  from letsencrypt.client import errors
  from letsencrypt.client.display import display_util
  
  
  class AskTest(unittest.TestCase):
      """Test the ask method."""
      def setUp(self):
          logging.disable(logging.CRITICAL)
  
      def tearDown(self):
          logging.disable(logging.NOTSET)
  
      @classmethod
      def _call(cls, enhancement):
          from letsencrypt.client.display.enhancements import ask
          return ask(enhancement)
  
      @mock.patch("letsencrypt.client.display.enhancements.util")
      def test_redirect(self, mock_util):
          mock_util().menu.return_value = (display_util.OK, 1)
          self.assertTrue(self._call("redirect"))
  
      def test_key_error(self):
          self.assertRaises(
              errors.LetsEncryptClientError, self._call, "unknown_enhancement")
  
  
  class RedirectTest(unittest.TestCase):
      """Test the redirect_by_default method."""
      @classmethod
      def _call(cls):
          from letsencrypt.client.display.enhancements import redirect_by_default
          return redirect_by_default()
  
      @mock.patch("letsencrypt.client.display.enhancements.util")
      def test_secure(self, mock_util):
          mock_util().menu.return_value = (display_util.OK, 1)
          self.assertTrue(self._call())
  
      @mock.patch("letsencrypt.client.display.enhancements.util")
      def test_cancel(self, mock_util):
          mock_util().menu.return_value = (display_util.CANCEL, 1)
          self.assertFalse(self._call())
  
      @mock.patch("letsencrypt.client.display.enhancements.util")
      def test_easy(self, mock_util):
          mock_util().menu.return_value = (display_util.OK, 0)
          self.assertFalse(self._call())
  
  
  if __name__ == "__main__":
      unittest.main()
  
subject: Add tests for enhancments UI