Testing Jupyter notebooks

[christian-oreilly]

I would like to add Jupyter notebook testing through my CI on GitHub. For this, I can use pytest --nb-test-files, which works fine. My understanding is that we can add whatever flags after hatch test and these will be passed to pytest. However, using hatch test --nb-test-files, I get the following error:

ERROR: usage: pytest [options] [file_or_dir] [file_or_dir] [...]
pytest: error: unrecognized arguments: --nb-test-files
  inifile: /Users/christian/Code/ipyniivue/pyproject.toml
  rootdir: /Users/christian/Code/ipyniivue

Any idea of what is going wrong there and how to fix it?