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107 lines
4.1 KiB
Python
107 lines
4.1 KiB
Python
from __future__ import unicode_literals
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import os
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import sys
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import warnings
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from django.apps import apps
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from django.core.exceptions import ImproperlyConfigured
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from django.db import models
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from django.test import TestCase
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from django.test.utils import extend_sys_path
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from django.utils import six
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from django.utils._os import upath
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from django.utils.deprecation import RemovedInDjango19Warning
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class EggLoadingTest(TestCase):
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def setUp(self):
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self.egg_dir = '%s/eggs' % os.path.dirname(upath(__file__))
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def tearDown(self):
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apps.clear_cache()
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def test_egg1(self):
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"""Models module can be loaded from an app in an egg"""
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egg_name = '%s/modelapp.egg' % self.egg_dir
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with extend_sys_path(egg_name):
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with self.settings(INSTALLED_APPS=['app_with_models']):
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models_module = apps.get_app_config('app_with_models').models_module
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self.assertIsNotNone(models_module)
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del apps.all_models['app_with_models']
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def test_egg2(self):
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"""Loading an app from an egg that has no models returns no models (and no error)"""
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egg_name = '%s/nomodelapp.egg' % self.egg_dir
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with extend_sys_path(egg_name):
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with self.settings(INSTALLED_APPS=['app_no_models']):
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models_module = apps.get_app_config('app_no_models').models_module
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self.assertIsNone(models_module)
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del apps.all_models['app_no_models']
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def test_egg3(self):
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"""Models module can be loaded from an app located under an egg's top-level package"""
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egg_name = '%s/omelet.egg' % self.egg_dir
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with extend_sys_path(egg_name):
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with self.settings(INSTALLED_APPS=['omelet.app_with_models']):
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models_module = apps.get_app_config('app_with_models').models_module
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self.assertIsNotNone(models_module)
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del apps.all_models['app_with_models']
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def test_egg4(self):
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"""Loading an app with no models from under the top-level egg package generates no error"""
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egg_name = '%s/omelet.egg' % self.egg_dir
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with extend_sys_path(egg_name):
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with self.settings(INSTALLED_APPS=['omelet.app_no_models']):
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models_module = apps.get_app_config('app_no_models').models_module
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self.assertIsNone(models_module)
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del apps.all_models['app_no_models']
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def test_egg5(self):
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"""Loading an app from an egg that has an import error in its models module raises that error"""
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egg_name = '%s/brokenapp.egg' % self.egg_dir
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with extend_sys_path(egg_name):
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with six.assertRaisesRegex(self, ImportError, 'modelz'):
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with self.settings(INSTALLED_APPS=['broken_app']):
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pass
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class GetModelsTest(TestCase):
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def setUp(self):
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from .not_installed import models
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self.not_installed_module = models
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def test_get_model_only_returns_installed_models(self):
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with self.assertRaises(LookupError):
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apps.get_model("not_installed", "NotInstalledModel")
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def test_get_models_only_returns_installed_models(self):
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self.assertNotIn(
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"NotInstalledModel",
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[m.__name__ for m in apps.get_models()])
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def test_exception_raised_if_model_declared_outside_app(self):
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class FakeModule(models.Model):
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__name__ = str("models_that_do_not_live_in_an_app")
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sys.modules['models_not_in_app'] = FakeModule
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def declare_model_outside_app():
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models.base.ModelBase.__new__(
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models.base.ModelBase,
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str('Outsider'),
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(models.Model,),
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{'__module__': 'models_not_in_app'})
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msg = (
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'Unable to detect the app label for model "Outsider." '
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'Ensure that its module, "models_that_do_not_live_in_an_app", '
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'is located inside an installed app.'
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)
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with warnings.catch_warnings():
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warnings.filterwarnings('ignore', category=RemovedInDjango19Warning)
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with self.assertRaisesMessage(ImproperlyConfigured, msg):
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declare_model_outside_app()
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