django/tests/app_cache/tests.py

52 lines
1.9 KiB
Python

from __future__ import absolute_import
from django.core.apps import app_cache
from django.core.apps.cache import AppCache
from django.db import models
from django.test import TestCase
from .models import TotallyNormal, SoAlternative, new_app_cache
class AppCacheTests(TestCase):
def test_models_py(self):
"""
Tests that the models in the models.py file were loaded correctly.
"""
self.assertEqual(app_cache.get_model("app_cache", "TotallyNormal"), TotallyNormal)
self.assertEqual(app_cache.get_model("app_cache", "SoAlternative"), None)
self.assertEqual(new_app_cache.get_model("app_cache", "TotallyNormal"), None)
self.assertEqual(new_app_cache.get_model("app_cache", "SoAlternative"), SoAlternative)
def test_dynamic_load(self):
"""
Makes a new model at runtime and ensures it goes into the right place.
"""
old_models = app_cache.get_models(app_cache.get_app_config("app_cache").models_module)
# Construct a new model in a new app cache
body = {}
new_app_cache = AppCache()
meta_contents = {
'app_label': "app_cache",
'app_cache': new_app_cache,
}
meta = type("Meta", tuple(), meta_contents)
body['Meta'] = meta
body['__module__'] = TotallyNormal.__module__
temp_model = type("SouthPonies", (models.Model,), body)
# Make sure it appeared in the right place!
self.assertEqual(
old_models,
app_cache.get_models(app_cache.get_app_config("app_cache").models_module),
)
self.assertEqual(new_app_cache.get_model("app_cache", "SouthPonies"), temp_model)
def test_singleton_master(self):
"""
Ensures that only one master app cache can exist.
"""
with self.assertRaises(RuntimeError):
AppCache(master=True)