def test_uncontained():
item = Item()
container = {u'foo': item}
x, event = containedEvent(item, container, u'foo')
assert item.__parent__ is container
assert item.__name__ == u'foo'
uncontained(item, container, u'foo')
assert item.__parent__ is None
assert item.__name__ is None
assert len(getEvents(IObjectRemovedEvent)) == 1
event = getEvents(IObjectRemovedEvent)[-1]
assert event.object is item
assert event.oldParent is container
assert event.oldName == u'foo'
assert event.newParent is None
assert event.newName is None
assert len(getEvents(IObjectModifiedEvent)) == 1
assert getEvents(IObjectModifiedEvent)[-1].object is container
# Events are never triggered twice
uncontained(item, container, u'foo')
assert len(getEvents(IObjectRemovedEvent)) == 1
assert len(getEvents(IObjectModifiedEvent)) == 1
item.__parent__, item.__name__ = container, None
uncontained(item, container, u'foo')
assert len(getEvents(IObjectRemovedEvent)) == 1
assert len(getEvents(IObjectModifiedEvent)) == 2
item.__parent__, item.__name__ = None, u'bar'
uncontained(item, container, u'foo')
assert len(getEvents(IObjectRemovedEvent)) == 1
assert len(getEvents(IObjectModifiedEvent)) == 3
def __delitem__(self, key):
# make sure our lazy property gets set
l = self.__len
uncontained(self._data[key], self, key)
del self._data[key]
l.change(-1)
def __delitem__(self, key):
"""See interface `IWriteContainer`.
"""
uncontained(self._data[key], self, key)
del self._data[key]
