More info about docstrings

I wonder how docstrings usage should work. I run tests from a nested folder like `pytest path/path/path/package/tests`, I have docstrings in my tests, but I see this in Azure DevOps:

One test has a one-line docstring `"""description"""`, where another one is:
```python
def test_simple_script(datafiles: str):
"""Test description

Longer description

Args:
datafiles (str): directory with test data
"""
```