Django test hits default database while running test - expecting `test_<defaultdatabasename>`

[Carlos Leite]

# models.py

class Disco(models.Model):
    nome = models.CharField('disco', max_length=50)

class Musica(models.Model):
    disco = models.ForeignKey(Disco, on_delete=models.CASCADE)
    nome = models.CharField('nome do disco', max_length=50)

# forms.py

class MusicForm(forms.Form):
     ''' ... like a search form, I need option from database '''
     disco = forms.ChoiceField(choices=Disco.objects.all())   # this cause the error, I dont like it , but supposed its a fair code to have choices.

# tests.py
# in the tests.py I just need to import the form to have the odd bahaviour

from django.test import TestCase
from .forms import MusicForm

... I just need to import the MusicForm to have the erros
# the error

    ...
    conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
   django.db.utils.OperationalError: FATAL:  database "disccollection" does not exist.   <<<-  database should be `test_dis...` <test_something>

I was trying to run tests, so the database to hit should be test_disccollection
but not disccollection (in my settings.py).

That may happends because django test framework only changes the settings.database.default alias after my form was initialized I supposed.

The problem I have was in Django 1.8 (Iknow its deprecated) ... then I tried django 3.1 , and error remains

I got some sample code here -> ​https://github.com/cadu-leite/django18py2testdb/tree/dj33py3test

[Mariusz Felisiak]

Thanks for this ticket, however you should use ModelChoiceField(queryset=Disco.objects.all()) instead of ChoiceField(choices=...).

Closing per TicketClosingReasons/UseSupportChannels.