pytest-cov
pytest-cov copied to clipboard
pytest-dev
billiard.Pool support (like multiprocessing.Pool)
platform linux2 -- Python 2.7.14, pytest-4.6.5, py-1.8.0, pluggy-0.12.0
plugins: xdist-1.29.0, cov-2.8.1, lazy-fixture-0.5.2, randomly-1.2.3, forked-1.0.2, instafail-0.4.1.post0
coverage==5.0.2
def _smoke_test_in_process():
assert str(3) == "3"
def test_ham():
import billiard as multiprocessing
pool = multiprocessing.Pool(processes=1)
pool.apply(_smoke_test_in_process)
pool.join()
and I get a report that assert str(3) == "3" isn't covered
when swapping import billiard as multiprocessing for import multiprocessing I get 100% coverage
billiard is a fork of the Python 2.7 multiprocessing package. The multiprocessing package itself is a renamed and updated version of R Oudkerk’s pyprocessing package. This standalone variant draws its fixes/improvements from python-trunk and provides additional bug fixes and improvements.
so it's helpful when testing python3 apps that use Celery, and python2 apps that require a multiprocessing module that actually works
as a side note, running
def _initializer():
from pytest_cov.embed import cleanup_on_sigterm
cleanup_on_sigterm
def _smoke_test_in_process():
assert str(3) == "3"
def test_ham():
import billiard as multiprocessing
with multiprocessing.Pool(processes=1, initializer=_initializer) as pool:
pool.apply(_smoke_test_in_process)
pool.join()
also results in assert str(3) == "3" being missed
I do get 100% coverage when running the _initializer in the _smoke_test_in_process
def _initializer():
from pytest_cov.embed import cleanup_on_sigterm
cleanup_on_sigterm
def _smoke_test_in_process():
_initializer()
assert str(3) == "3"
def test_ham():
import billiard as multiprocessing
with multiprocessing.Pool(processes=1) as pool:
pool.apply(_smoke_test_in_process)
pool.join()
Well ok but does anyone except celery actually use billiard? I'd rather look at how celery is supported than its internals that no one else uses.
