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='signals.E001', ), 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='signals.E001', ) ] self.assertEqual(errors, expected) post_init.unresolved_references = unresolved_references