def test_no_implementations(self):
with mock.mask_modules('pylibmc', 'memcache'):
with mock.reset_modules('celery.backends.cache'):
from celery.backends import cache
cache._imp = [None]
with pytest.raises(ImproperlyConfigured):
cache.get_best_memcache()
def test_memcache(self):
with self.mock_memcache():
with mock.reset_modules('celery.backends.cache'):
with mock.mask_modules('pylibmc'):
from celery.backends import cache
cache._imp = [None]
assert (cache.get_best_memcache()[0]().__module__ ==
'memcache')
def test_no_cpickle(self):
prev = sys.modules.pop('celery.utils.serialization', None)
try:
with mock.mask_modules('cPickle'):
from celery.utils.serialization import pickle
import pickle as orig_pickle
assert pickle.dumps is orig_pickle.dumps
finally:
sys.modules['celery.utils.serialization'] = prev
def test_memcache_bytes_key(self):
with self.mock_memcache():
with mock.reset_modules('celery.backends.cache'):
with mock.mask_modules('pylibmc'):
from celery.backends import cache
cache._imp = [None]
task_id, result = str_to_bytes(uuid()), 42
b = cache.CacheBackend(backend='memcache', app=self.app)
b.store_result(task_id, result, state=states.SUCCESS)
assert b.get_result(task_id) == result
def test_fixup(self, patching):
with patch('celery.fixups.django.DjangoFixup') as Fixup:
patching.setenv('DJANGO_SETTINGS_MODULE', '')
fixup(self.app)
Fixup.assert_not_called()
patching.setenv('DJANGO_SETTINGS_MODULE', 'settings')
with mock.mask_modules('django'):
with pytest.warns(FixupWarning):
fixup(self.app)
Fixup.assert_not_called()
with mock.module_exists('django'):
fixup(self.app)
Fixup.assert_called()
def test_pool_no_multiprocessing(self):
with mock.mask_modules('multiprocessing.util'):
pool = self.app.pool
assert pool is self.app._pool
def test_setup_logging_subsystem_no_mputil(self):
with mock.mask_modules('billiard.util'):
self.app.log.setup_logging_subsystem()