code: def test_command_line_interface_options(self):
      target_string = "Show this message and exit."
      runner = CliRunner()
      help_result = runner.invoke(face_recognition_cli.main, ["--help"])
      self.assertEqual(help_result.exit_code, 0)
      self.assertTrue(target_string in help_result.output)
  
imports: import unittest
  import os
  import numpy
  from click.testing import CliRunner
  from face_recognition import api
  from face_recognition import face_recognition_cli
  from face_recognition import face_detection_cli
label_desc: Use image node_id 21 for calling the Test_face_recognition obj's underlying member method code with example usage: obj.test_command_line_interface_options() without return types