def test_with_no_manager(self):
manager = ChainManager(None)
with self.assertRaises(Exception):
manager.retrieve("none")
self.assertFalse(manager.exists("id"))
self.assertFalse(manager.delete("id"))
def test_with_managers_exists(self):
m = mock.Mock()
m.exists.return_value = True
manager = ChainManager([("fs", m)])
self.assertTrue(manager.exists("hello"))
