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99 lines
3.9 KiB
Python
99 lines
3.9 KiB
Python
from django.core import management
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from django.core.checks import Error
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from django.core.checks.model_checks import _check_lazy_references
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from django.db import models
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from django.db.models.signals import post_init
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from django.test import SimpleTestCase
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from django.test.utils import isolate_apps, override_settings
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from django.utils import six
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@override_settings(
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INSTALLED_APPS=['django.contrib.auth', 'django.contrib.contenttypes'],
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SILENCED_SYSTEM_CHECKS=['fields.W342'], # ForeignKey(unique=True)
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)
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class ModelValidationTest(SimpleTestCase):
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def test_models_validate(self):
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# All our models should validate properly
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# Validation Tests:
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# * choices= Iterable of Iterables
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# See: https://code.djangoproject.com/ticket/20430
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# * related_name='+' doesn't clash with another '+'
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# See: https://code.djangoproject.com/ticket/21375
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management.call_command("check", stdout=six.StringIO())
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@isolate_apps('django.contrib.auth', kwarg_name='apps')
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def test_lazy_reference_checks(self, apps):
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class DummyModel(models.Model):
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author = models.ForeignKey('Author', models.CASCADE)
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class Meta:
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app_label = "model_validation"
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class DummyClass(object):
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def __call__(self, **kwargs):
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pass
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def dummy_method(self):
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pass
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def dummy_function(*args, **kwargs):
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pass
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apps.lazy_model_operation(dummy_function, ('auth', 'imaginarymodel'))
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apps.lazy_model_operation(dummy_function, ('fanciful_app', 'imaginarymodel'))
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post_init.connect(dummy_function, sender='missing-app.Model', apps=apps)
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post_init.connect(DummyClass(), sender='missing-app.Model', apps=apps)
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post_init.connect(DummyClass().dummy_method, sender='missing-app.Model', apps=apps)
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errors = _check_lazy_references(apps)
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expected = [
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Error(
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"%r contains a lazy reference to auth.imaginarymodel, "
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"but app 'auth' doesn't provide model 'imaginarymodel'." % dummy_function,
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obj=dummy_function,
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id='models.E022',
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),
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Error(
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"%r contains a lazy reference to fanciful_app.imaginarymodel, "
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"but app 'fanciful_app' isn't installed." % dummy_function,
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obj=dummy_function,
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id='models.E022',
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),
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Error(
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"An instance of class 'DummyClass' was connected to "
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"the 'post_init' signal with a lazy reference to the sender "
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"'missing-app.model', but app 'missing-app' isn't installed.",
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hint=None,
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obj='model_validation.tests',
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id='signals.E001',
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),
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Error(
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"Bound method 'DummyClass.dummy_method' was connected to the "
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"'post_init' signal with a lazy reference to the sender "
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"'missing-app.model', but app 'missing-app' isn't installed.",
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hint=None,
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obj='model_validation.tests',
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id='signals.E001',
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),
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Error(
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"The field model_validation.DummyModel.author was declared "
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"with a lazy reference to 'model_validation.author', but app "
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"'model_validation' isn't installed.",
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hint=None,
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obj=DummyModel.author.field,
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id='fields.E307',
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),
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Error(
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"The function 'dummy_function' was connected to the 'post_init' "
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"signal with a lazy reference to the sender "
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"'missing-app.model', but app 'missing-app' isn't installed.",
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hint=None,
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obj='model_validation.tests',
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id='signals.E001',
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),
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]
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self.assertEqual(errors, expected)
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