def test_order_events(self):
# Prepare the setup::
from zope.container.contained import ContainerModifiedEvent
# Prepare some objects::
from zope.container.ordered import OrderedContainer
oc = OrderedContainer()
oc['foo'] = 'bar'
oc['baz'] = 'quux'
oc['zork'] = 'grue'
self.assertEqual(oc.keys(), ['foo', 'baz', 'zork'])
# Now change the order::
clearEvents()
oc.updateOrder(['baz', 'foo', 'zork'])
self.assertEqual(oc.keys(), ['baz', 'foo', 'zork'])
# Check what events have been sent::
events = getEvents()
self.assertEqual(1, len(events))
self.assertIsInstance(events[0], ContainerModifiedEvent)
# This is in fact a specialized modification event::
from zope.lifecycleevent.interfaces import IObjectModifiedEvent
self.assertTrue(IObjectModifiedEvent.providedBy(events[0]))
def test_order_events(self):
# Prepare the setup::
from zope.container.contained import ContainerModifiedEvent
# Prepare some objects::
from zope.container.ordered import OrderedContainer
oc = OrderedContainer()
oc['foo'] = 'bar'
oc['baz'] = 'quux'
oc['zork'] = 'grue'
self.assertEqual(oc.keys(),
['foo', 'baz', 'zork'])
# Now change the order::
clearEvents()
oc.updateOrder(['baz', 'foo', 'zork'])
self.assertEqual(oc.keys(),
['baz', 'foo', 'zork'])
# Check what events have been sent::
events = getEvents()
self.assertEqual(1, len(events))
self.assertIsInstance(events[0], ContainerModifiedEvent)
# This is in fact a specialized modification event::
from zope.lifecycleevent.interfaces import IObjectModifiedEvent
self.assertTrue(IObjectModifiedEvent.providedBy(events[0]))
def test_order_updateOrder_bytes(self):
# https://github.com/zopefoundation/zope.container/issues/21
from zope.container.ordered import OrderedContainer
keys = [u'a', u'b']
oc = OrderedContainer()
oc[keys[0]] = 0
oc[keys[1]] = 1
self.assertEqual(keys, oc.keys())
# Updating with bytes keys...
oc.updateOrder((b'b', b'a'))
# still produces text keys
text_type = str if str is not bytes else unicode
self.assertEqual(list(reversed(keys)), oc.keys())
self.assertIsInstance(oc.keys()[0], text_type)
def test_order_updateOrder_bytes(self):
# https://github.com/zopefoundation/zope.container/issues/21
from zope.container.ordered import OrderedContainer
keys = [u'a', u'b']
oc = OrderedContainer()
oc[keys[0]] = 0
oc[keys[1]] = 1
self.assertEqual(keys, oc.keys())
# Updating with bytes keys...
oc.updateOrder((b'b', b'a'))
# still produces text keys
text_type = str if str is not bytes else unicode
self.assertEqual(list(reversed(keys)), oc.keys())
self.assertIsInstance(oc.keys()[0], text_type)
def test_namechooser_rename_preserve_order(self):
# Test for OrderedContainerItemRenamer.renameItem
# This is a regression test for
# http://www.zope.org/Collectors/Zope3-dev/658
# Also: https://bugs.launchpad.net/zope.copypastemove/+bug/98385
provideAdapter(ObjectMover)
# There's an ordered container
from zope.container.ordered import OrderedContainer
container = OrderedContainer()
class Obj(Contained):
def __init__(self, title):
self.title = title
objects = [Obj('Foo'), Obj('Bar'), Obj('Baz')]
container['foo'] = objects[0]
container['bar'] = objects[1]
container['baz'] = objects[2]
# with a custom name chooser
import codecs
from zope.interface import implementer, Interface
from zope.container.interfaces import INameChooser
class IMyContainer(Interface):
"An interface"
@adapter(IMyContainer)
@implementer(INameChooser)
class MyNameChooser(object):
def __init__(self, container):
self.container = container
def chooseName(self, name, obj):
return codecs.getencoder('rot-13')(name)[0]
provideAdapter(MyNameChooser)
from zope.interface import alsoProvides
alsoProvides(container, IMyContainer)
# OrderedContainerItemRenamer renames and preserves the order of items
from zope.copypastemove import OrderedContainerItemRenamer
renamer = OrderedContainerItemRenamer(container)
self.assertEqual(renamer.renameItem('bar', 'quux'),
u'dhhk')
self.assertEqual(list(container.keys()),
[u'foo', u'dhhk', u'baz'])
self.assertEqual(container.values(),
objects)
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'])
