- conftest.py: registra --preprocess-dir via pytest_addoption
- test_preprocessors.py: usa pytest_generate_tests per leggere i casi
a collection time con accesso a config; _content e _fixtures_dir
accettano path dinamico
Usage: pytest tests/test_preprocessors.py --preprocess-dir /my/folder
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>