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django/tests/model_validation/tests.py
Russell Keith-Magee d818e0c9b2 Fixed #16905 -- Added extensible checks (nee validation) framework
This is the result of Christopher Medrela's 2013 Summer of Code project.

Thanks also to Preston Holmes, Tim Graham, Anssi Kääriäinen, Florian
Apolloner, and Alex Gaynor for review notes along the way.

Also: Fixes #8579, fixes #3055, fixes #19844.
2014-01-20 10:45:21 +08:00

54 lines
1.8 KiB
Python

from django.core import management
from django.core.checks import run_checks, Error
from django.db.models.signals import post_init
from django.test import TestCase
from django.utils import six
class OnPostInit(object):
def __call__(self, **kwargs):
pass
def on_post_init(**kwargs):
pass
class ModelValidationTest(TestCase):
def test_models_validate(self):
# All our models should validate properly
# Validation Tests:
# * choices= Iterable of Iterables
# See: https://code.djangoproject.com/ticket/20430
# * related_name='+' doesn't clash with another '+'
# See: https://code.djangoproject.com/ticket/21375
management.call_command("check", stdout=six.StringIO())
def test_model_signal(self):
unresolved_references = post_init.unresolved_references.copy()
post_init.connect(on_post_init, sender='missing-app.Model')
post_init.connect(OnPostInit(), sender='missing-app.Model')
errors = run_checks()
expected = [
Error(
"The `on_post_init` function was connected to the `post_init` "
"signal with a lazy reference to the 'missing-app.Model' "
"sender, which has not been installed.",
hint=None,
obj='model_validation.tests',
id='E014',
),
Error(
"An instance of the `OnPostInit` class was connected to "
"the `post_init` signal with a lazy reference to the "
"'missing-app.Model' sender, which has not been installed.",
hint=None,
obj='model_validation.tests',
id='E014',
)
]
self.assertEqual(errors, expected)
post_init.unresolved_references = unresolved_references