[GitHub] [airflow] mik-laj commented on pull request #8552: fix help message display for dags test subcommand

[GitBox <gi...@apache.org>]

mik-laj commented on pull request #8552:
URL: https://github.com/apache/airflow/pull/8552#issuecomment-619299600


   Can you add test to avoid regression? I think something similar to the one below is enough.
   ```
   tests/cli/test_cli_parser.py
   ```
   ```python
       def test_should_display_helps(self):
           parser = cli_parser.get_parser()
   
           all_command_as_args = sum([
               [[top_commaand.name]]
               if isinstance(top_commaand, cli_parser.ActionCommand)
               else [
                   [top_commaand.name, nested_command.name] for nested_command in top_commaand.subcommands
               ]
   
               for top_commaand in cli_parser.airflow_commands
           ], [])
           for cmd_args in all_command_as_args:
               with self.assertRaises(SystemExit):
                   parser.parse_args([*cmd_args, '--help'])
   ```


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