How to run unit tests?
Dear Python experts,
in trying to update the python-lark package [0] to the most recent
upstream version, an interesting issue regarding unit tests showed up
[1]. Depending on how one runs unit tests they either fail or not. Tried
options are:
1. PYTHONWARNINGS=d pythonX -m unittest discover -v tests
2. pythonX setup.py test
3. pythonX -m tests
Upstream uses option 3 in its CI testing [2] and did not see any issues
with lark release 0.11.1. dh_auto_test seems to use option 2 by default
(for the pybuild build system). For autopkgtest I have chosen to use
option 1. The latter two options both fail for version 0.11.1. After
applying a patch provided by upstream [3], also option 2 works but
option 1 still fails. Upstream suggested to change the way the
(autopkgtest) tests are run [4].
I am reluctant to do this without a better understanding of the
differences between the above three options. Can anybody shed some light
on the differences between them? Is there something like a general
recommendation on what is the best way to run Python unit tests?
Peter
[0] https://salsa.debian.org/python-team/packages/python-lark
[1] https://github.com/lark-parser/lark/issues/792
[2]
https://github.com/lark-parser/lark/blob/0.11.1/.github/workflows/tests.yml#L28
[3] https://github.com/lark-parser/lark/pull/782
[4] https://github.com/lark-parser/lark/issues/792#issuecomment-739504664
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