--source not working like in Coverage.py

[jaltmayerpizzorno]

In Coverage.py, --source matches package names as well. I saw some discrepancies in coverage results while running the flask test suite.

[jaltmayerpizzorno]

Note to self: https://coverage.readthedocs.io/en/6.3.2/source.html#source

[toxadx]

It does not support multiple sources as well.

[emeryberger]

Can you provide a test case that shows the issue?

[toxadx]

Assume that you have sources in bases/ and components/ (polilyth architecture).
Running slipcover with multiple sources filters results only for the last one.

$ uv run slipcover --skip-covered --source bases --source components -m pytest
File                                                 #lines    #l.miss    Cover%    Missing
---------------------------------------------------  --------  ---------  --------  -------------
components/<filtered>/communication/email.py           26        12         54        21, 23, 39-48
components/<filtered>/communication/sms/<filtered>.py  21        21         0         1-33
components/<filtered>/communication/sms/<filtered>.py    19        10         47        19-31
components/<filtered>/telemetry/__init__.py            1         1          0         1
---
(summary)        

[jaltmayerpizzorno]

Assume that you have sources in bases/ and components/ (polilyth architecture). Running slipcover with multiple sources filters results only for the last one.

You can comma-separate multiple paths in --source. I believe that is the same behavior as coverage.py.

[jaltmayerpizzorno]

What's missing is source-by-package-name.