Files in this folder:
```

list_folder.py:
---
The purpose of this file is to:

1. Import necessary modules and libraries.
2. Define and run tests for the "list_folder" action.
3. Use the `pytest.mark.parametrize` decorator to specify different test inputs and expected outputs.
4. Mock the `openai.ChatCompletion.create` function using the `mock_openai` function.
5. Assert the expected outputs of the action and compare them with the provided expected list of files.
---

```

What's this folder all about? Respond in 3-5 sentences.