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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