django/tests/swappable_models/tests.py

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from __future__ import unicode_literals
from django.utils.six import StringIO
from django.contrib.auth.models import Permission
from django.contrib.contenttypes.models import ContentType
from django.core import management
from django.db.models.loading import cache
from django.test import TestCase
from django.test.utils import override_settings
from swappable_models.models import Article
class SwappableModelTests(TestCase):
available_apps = [
'swappable_models',
'django.contrib.auth',
'django.contrib.contenttypes',
]
def setUp(self):
# This test modifies the installed apps, so we need to make sure
# we're not dealing with a cached app list.
cache._get_models_cache.clear()
def tearDown(self):
# By fiddling with swappable models, we alter the installed models
# cache, so flush it to make sure there are no side effects.
cache._get_models_cache.clear()
@override_settings(TEST_ARTICLE_MODEL='swappable_models.AlternateArticle')
def test_generated_data(self):
"Permissions and content types are not created for a swapped model"
# Delete all permissions and content_types
Permission.objects.filter(content_type__app_label='swappable_models').delete()
ContentType.objects.filter(app_label='swappable_models').delete()
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# Re-run migrate. This will re-build the permissions and content types.
new_io = StringIO()
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management.call_command('migrate', load_initial_data=False, interactive=False, stdout=new_io)
# Check that content types and permissions exist for the swapped model,
# but not for the swappable model.
apps_models = [(p.content_type.app_label, p.content_type.model)
for p in Permission.objects.all()]
self.assertIn(('swappable_models', 'alternatearticle'), apps_models)
self.assertNotIn(('swappable_models', 'article'), apps_models)
apps_models = [(ct.app_label, ct.model)
for ct in ContentType.objects.all()]
self.assertIn(('swappable_models', 'alternatearticle'), apps_models)
self.assertNotIn(('swappable_models', 'article'), apps_models)
@override_settings(TEST_ARTICLE_MODEL='swappable_models.article')
def test_case_insensitive(self):
"Model names are case insensitive. Check that model swapping honors this."
try:
Article.objects.all()
except AttributeError:
self.fail('Swappable model names should be case insensitive.')
self.assertIsNone(Article._meta.swapped)