def __setitem__(self, key, value):
checkObject(self, key, value)
value.__parent__ = self
value.__name__ = key
alsoProvides(value, IContained)
OOBTree.__setitem__(self, key, value)
notify(events.RelationAddedEvent(value))
def test_moving_failure():
"""The constraints prevent us from moving a container beneath
itself (either into itself or another folder beneath it).
"""
container = Container()
with pytest.raises(TypeError):
checkObject(container, 'x', container)
subcontainer = Container()
interface.directlyProvides(subcontainer, ILocation)
subcontainer.__parent__ = container
with pytest.raises(TypeError):
checkObject(subcontainer, 'x', container)
def test_constraints_order():
"""In the previous tests, we defined the container first and
then the items. We can define these in the opposite order.
"""
@interface.implementer(IContact)
class Contact:
pass
@interface.implementer(IContacts)
class Contacts:
pass
assert checkObject(Contacts(), 'x', Contact()) is None
with pytest.raises(InvalidItemType):
checkObject(Contacts(), 'x', object())
def test_contraints():
@interface.implementer(IBuddy)
class Buddy:
pass
@interface.implementer(IBuddyFolder)
class BuddyFolder:
pass
assert checkObject(BuddyFolder(), 'x', Buddy()) is None
@interface.implementer(IContained)
class Contained:
pass
with pytest.raises(InvalidContainerType):
checkObject(Container(), 'x', Buddy())
with pytest.raises(InvalidItemType):
checkObject(BuddyFolder(), 'x', Contained())
def test_contraints():
class Buddy:
interface.implements(IBuddy)
class BuddyFolder:
interface.implements(IBuddyFolder)
assert checkObject(BuddyFolder(), 'x', Buddy()) is None
assert checkFactory(BuddyFolder(), 'x', Factory(Buddy))
class Contained:
interface.implements(IContained)
with pytest.raises(InvalidContainerType):
checkObject(Container(), 'x', Buddy())
assert not checkFactory(Container(), 'x', Factory(Buddy))
with pytest.raises(InvalidItemType):
checkObject(BuddyFolder(), 'x', Contained())