Django q with pytest

[ashleych]

Many thanks for a great package. Works excellent for my use case.
I was beginning to write some tests that involve async tasks, and I realised these tests (pytests) were failing because the async job isnt looking at the right database. How does one point django-q /qcluster to look at the test database that pytest uses.
im mostly using the default settings from Django.
DATABASE related settings.py looks like this
'default': { 'ENGINE': 'django.db.backends.sqlite3', 'NAME': BASE_DIR / 'db.sqlite3', 'TEST': { 'NAME': BASE_DIR / 'testdb.sqlite3', }, },
I am running this to check what is the db being connected to.
from django.db import connection db_name = connection.settings_dict['NAME']
When the function is being run in non async mode - it rightly points to the testdb.sqlite3.
When run using async mode, it points to the db.sqlite3.
How do i make the async task to refer to the testdb.
Any pointers would be very helpful.

PS: If I call the async function with sync=True, then everything works fine.

[NickVeld]

Met this problem too. (And I do not think that the pytest is one to blame here. However, I use pytest too.)
Moreover, I believe it is the same problem that cause #490

Django-Q uses default DATABASES setting but django.test.utils.setup_databases called by test runners add test_ before the configured database name. So Django-Q (which runs in separate worker/django environment) adds the tasks into the default database from the settings but Django test runner tries to read task list (and so on) from the newly created test database.

[NickVeld]

So it is possible to make Django-Q read task list in the test from a test database.

It is possible to override the settings file for QCluster like this:
python src/manage.py qcluster --settings some_package,some_module_with_settings

Then some_module_with_settings.py located in the some_package directory must be something like this:

from .settings import *   # Imports original settings including DATABASES

# If you have some more complex setup than `DATABASES = { "default": {"ENGINE": ... , "NAME": ... , ...}}`
# you may need something smarter than the following line
DATABASES["default"]["NAME"] = "test_" + DATABASES["default']["NAME"]