now i feel silly - that comes back with 0% because it’s not testing decision_tree/core.py (o: it runs 00_core.ipynb from top to bottom.
To get good coverage measures, we need to use the modules that nbdev built and run just the non-exported cells as tests.
If we added a little callback to nbdev.test.test_nb we could easily implement callback handlers to run tests in this way: https://github.com/pete88b/decision_tree/blob/master/test_nbs.py - while making it easy for nbdev to keep current behavior.
Now when I run
pytest --cov=decision_tree
I see
collected 1 item
test_nbs.py .
----------- coverage: platform linux, python 3.7.7-final-0 -----------
Name Stmts Miss Cover
---------------------------------------------------------------
decision_tree/__init__.py 1 0 100%
decision_tree/_nbdev.py 6 0 100%
decision_tree/core.py 34 3 91%
decision_tree/data.py 52 52 0%