text: #!/usr/bin/env python3
  # -*- coding: utf-8 -*-
  """Tests for the dynamic output module CLI arguments helper."""
  
  import argparse
  import unittest
  
  from plaso.cli.helpers import dynamic_output
  from plaso.lib import errors
  from plaso.output import dynamic
  
  from tests.cli import test_lib as cli_test_lib
  from tests.cli.helpers import test_lib
  
  
  class DynamicOutputArgumentsHelperTest(
      test_lib.OutputModuleArgumentsHelperTest):
    """Tests the dynamic output module CLI arguments helper."""
  
    # pylint: disable=no-member,protected-access
  
    _EXPECTED_OUTPUT = """\
  usage: cli_helper.py [--fields FIELDS] [--additional_fields ADDITIONAL_FIELDS]
  
  Test argument parser.
  
  optional arguments:
    --additional_fields ADDITIONAL_FIELDS
                          Defines extra fields to be included in the output, in
                          addition to the default fields, which are datetime,
                          timestamp_desc, source, source_long, message, parser,
                          display_name, tag.
    --fields FIELDS       Defines which fields should be included in the output.
  """
  
    def testAddArguments(self):
      """Tests the AddArguments function."""
      argument_parser = argparse.ArgumentParser(
          prog='cli_helper.py',
          description='Test argument parser.', add_help=False,
          formatter_class=cli_test_lib.SortedArgumentsHelpFormatter)
  
      dynamic_output.DynamicOutputArgumentsHelper.AddArguments(argument_parser)
  
      output = self._RunArgparseFormatHelp(argument_parser)
      self.assertEqual(output, self._EXPECTED_OUTPUT)
  
    def testParseOptions(self):
      """Tests the ParseOptions function."""
      options = cli_test_lib.TestOptions()
  
      output_mediator = self._CreateOutputMediator()
      output_module = dynamic.DynamicOutputModule(output_mediator)
      dynamic_output.DynamicOutputArgumentsHelper.ParseOptions(
          options, output_module)
  
      with self.assertRaises(errors.BadConfigObject):
        dynamic_output.DynamicOutputArgumentsHelper.ParseOptions(options, None)
  
  
  if __name__ == '__main__':
    unittest.main()
  