def test_order_adding_none(self):
# This is a regression test: adding None to an OrderedContainer
# used to corrupt its internal data structure (_order and _data
# would get out of sync, causing KeyErrors when you tried to iterate).
from zope.container.ordered import OrderedContainer
oc = OrderedContainer()
oc['foo'] = None
self.assertEqual(oc.keys(), ['foo'])
self.assertEqual(oc.values(), [None])
self.assertEqual(oc.items(), [('foo', None)])
# None got proxied, so 'is None is not true
self.assertIsNotNone(oc['foo'])
self.assertEqual(None, oc['foo'])
def test_order_adding_none(self):
# This is a regression test: adding None to an OrderedContainer
# used to corrupt its internal data structure (_order and _data
# would get out of sync, causing KeyErrors when you tried to iterate).
from zope.container.ordered import OrderedContainer
oc = OrderedContainer()
oc['foo'] = None
self.assertEqual(oc.keys(), ['foo'])
self.assertEqual(oc.values(), [None])
self.assertEqual(oc.items(),
[('foo', None)])
# None got proxied, so 'is None is not true
self.assertIsNotNone(oc['foo'])
self.assertEqual(None, oc['foo'])
def listItems(self):
# Now this is tricky: we want to construct a small object graph using
# old state pickles without ever calling __setstate__ on a real
# Persistent object, as _that_ would poison ZODB in-memory caches
# in a nasty way (LP #487243).
container = OrderedContainer()
container.__setstate__(self.state)
if isinstance(container._data, PersistentDict):
old_data_state = IObjectHistory(container._data).loadState(self.tid)
container._data = PersistentDict()
container._data.__setstate__(old_data_state)
if isinstance(container._order, PersistentList):
old_order_state = IObjectHistory(container._order).loadState(self.tid)
container._order = PersistentList()
container._order.__setstate__(old_order_state)
return container.items()
def listItems(self):
# Now this is tricky: we want to construct a small object graph using
# old state pickles without ever calling __setstate__ on a real
# Persistent object, as _that_ would poison ZODB in-memory caches
# in a nasty way (LP #487243).
container = OrderedContainer()
container.__setstate__(self.state)
if isinstance(container._data, PersistentDict):
old_data_state = IObjectHistory(container._data).loadState(
self.tid)
container._data = PersistentDict()
container._data.__setstate__(old_data_state)
if isinstance(container._order, PersistentList):
old_order_state = IObjectHistory(container._order).loadState(
self.tid)
container._order = PersistentList()
container._order.__setstate__(old_order_state)
return container.items()