def test_missing_app(self):
"""
Test that repeated app loading doesn't succeed in case there is an
error. Refs #17667.
"""
app_cache = AppCache()
# Pretend we're the master app cache to test the population process.
app_cache._apps_loaded = False
app_cache._models_loaded = False
with warnings.catch_warnings():
warnings.filterwarnings("ignore", "Overriding setting INSTALLED_APPS")
with override_settings(INSTALLED_APPS=['notexists']):
with self.assertRaises(ImportError):
app_cache.get_model('notexists', 'nomodel')
with self.assertRaises(ImportError):
app_cache.get_model('notexists', 'nomodel')
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)