Why is pytest aggressively escaping the message string provided to pytest.mark.filterwarnings? #3785
Description
I'd like to silence the warnings for a specific test which currently raises warnings about naive DateTimes in Django. The reason is because the test is creating noise which I don't have time to fix the underlying cause of.
My initial idea was to silence the warning, leave a comment explaining the silencing, and a comment in the offending code as a TODO.
I've run into issues, as I'd like to specifically ignore the warning about naive DateTimes. If other warnings turn up in the future, I want to see them.
From what I'm understand, pytest.mark.filterwarnings() takes a single string argument, which it splits on colons, escapes aggressively, and passes the results to warnings.filterwarnings().
My question is why is the escaping happening? My warning is as follows:
DateTimeField Model.field received a naive datetime (2018-08-04 00:00:00) while time zone support is active.My .filterwarnings() mark is as follows:
@pytest.mark.filterwarnings(
'ignore:'
'DateTimeField.*received a naive datetime.*while time zone'
' support is active:'
'RuntimeWarning'
)The arguments that make it through to warnings.filterwarnings() are:
(Pdb) action
'ignore'
(Pdb) message
'DateTimeField\\.\\*received\\ a\\ naive\\ datetime\\.\\*while\\ time\\ zone\\ support\\ is\\ active'
(Pdb) category
<type 'exceptions.RuntimeWarning'>
(Pdb)The message is re.compile()d in warnings.filterwarnings(), and that's what I'd like to leverage, but it appears pytest.mark.filterwarnings() has other ideas. Is there a reason for this? How do I get around this?
Pip list:
Package Version Location
------------------------ ------- ---------------------------------------------------------------------------------
alabaster 0.7.11
apipkg 1.5
asn1crypto 0.24.0
atomicwrites 1.1.5
attrs 18.1.0
Babel 2.6.0
bcrypt 3.1.4
beautifulsoup4 4.6.1
cffi 1.11.5
cov-core 1.15.0
coverage 3.7.1
coveralls 0.5
cryptography 2.3
Django 1.7.6
django-braces 1.8.0
django-colorful 1.1.0
django-configurations 0.8
django-dbbackup 2.3.2
django-extensions 1.5.2
django-fancypages 0.3.0
django-model-utils 3.1.2
django-phonenumber-field 1.3.0
django-qurl 0.1.1
django-redis-cache 0.13.1
django-rest-swagger 0.3.2
django-secure 1.0.1
django-sendfile 0.3.6
django-shortuuidfield 0.1.3
django-sslserver 0.15
django-treebeard 4.3
django-webtest 1.7.8
django-widget-tweaks 1.3
djangorestframework 2.4.5
docopt 0.6.2
docutils 0.12
dropbox 3.42
enum34 1.1.6
execnet 1.5.0
Fabric 1.14.0
factory-boy 2.8.1
Faker 0.8.17
fluffy 0.0.0 /home/asday/code/src/github.com/[...]
funcsigs 1.0.2
futures 3.2.0
haversine 0.4.5
idna 2.7
ipaddress 1.0.22
ipython 3.1.0
Jinja2 2.10
MarkupSafe 1.0
mock 1.0.1
more-itertools 4.3.0
paramiko 2.4.1
pathlib2 2.3.2
pep8 1.7.1
phonenumberslite 8.9.10
Pillow 2.8.1
pip 18.0
piprot 0.9.10
pkg-resources 0.0.0
pluggy 0.7.1
psycopg2 2.7.5
pudb 2015.2
purl 1.0.3
py 1.5.4
pyasn1 0.4.4
pycparser 2.18
Pygments 2.2.0
PyNaCl 1.2.1
pytest 3.7.1
pytest-cache 1.0
pytest-cov 1.8.1
pytest-django 3.1.2
pytest-pep8 1.0.6
pytest-splinter 1.7.7
python-dateutil 2.4.2
python-ntlm 1.1.0
pytz 2018.5
PyYAML 3.13
qrcode 5.1
raven 5.2.0
redis 2.10.6
requests 2.6.0
requests-futures 0.9.7
scandir 1.8
selenium 2.53.5
setuptools 40.0.0
shortuuid 0.5.0
six 1.11.0
snowballstemmer 1.2.1
sorl-thumbnail 12.2
Sphinx 1.3.1
sphinx-rtd-theme 0.1.7
splinter 0.7.3
structlog 15.1.0
text-unidecode 1.2
unicodecsv 0.14.1
Unidecode 1.0.22
urllib3 1.23
urwid 2.0.1
uWSGI 2.0.15
waitress 1.1.0
WebOb 1.8.2
WebTest 2.0.18
Werkzeug 0.10.4
wheel 0.31.1 pytest version 3.7.1. Operating system Linux Mint 18.