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##############################################################################
#
# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Traverser Adapter tests (adapter.py)
"""
import unittest
import zope.component
from zope.component.testing import PlacelessSetup
from zope.interface import directlyProvides, implementedBy
from zope.interface.verify import verifyClass
from zope.location.traversing \
import LocationPhysicallyLocatable, RootPhysicallyLocatable
from zope.location.interfaces \
import ILocationInfo, IRoot, LocationError
from zope.security.interfaces import Unauthorized
from zope.security.checker \
import ProxyFactory, defineChecker, CheckerPublic, Checker
from zope.security.management import newInteraction, endInteraction
from zope.traversing.adapters import Traverser, DefaultTraversable
from zope.traversing import adapters
from zope.traversing.interfaces import ITraversable, ITraverser
from zope.traversing.testing import contained, Contained
class ParticipationStub(object):
def __init__(self, principal):
self.principal = principal
self.interaction = None
class C(Contained):
def __init__(self, name):
self.name = name
class TraverserTests(PlacelessSetup, unittest.TestCase):
def setUp(self):
PlacelessSetup.setUp(self)
# Build up a wrapper chain
self.root = C('root')
self.folder = contained(C('folder'), self.root, name='folder')
self.item = contained(C('item'), self.folder, name='item')
self.tr = Traverser(self.item)
def testImplementsITraverser(self):
self.assertTrue(ITraverser.providedBy(self.tr))
def testVerifyInterfaces(self):
for interface in implementedBy(Traverser):
verifyClass(interface, Traverser)
def test_traverse_empty_path_is_context(self):
self.assertIs(self.item, self.tr.traverse(''))
class UnrestrictedNoTraverseTests(unittest.TestCase):
def setUp(self):
self.root = root = C('root')
directlyProvides(self.root, IRoot)
self.folder = folder = C('folder')
self.item = item = C('item')
root.folder = folder
folder.item = item
self.tr = Traverser(root)
def testNoTraversable(self):
self.assertRaises(LocationError, self.tr.traverse,
'folder')
class UnrestrictedTraverseTests(PlacelessSetup, unittest.TestCase):
def setUp(self):
PlacelessSetup.setUp(self)
zope.component.provideAdapter(DefaultTraversable, (None,), ITraversable)
zope.component.provideAdapter(LocationPhysicallyLocatable, (None,),
ILocationInfo)
zope.component.provideAdapter(RootPhysicallyLocatable,
(IRoot,), ILocationInfo)
# Build up a wrapper chain
self.root = root = C('root')
directlyProvides(self.root, IRoot)
self.folder = folder = contained(C('folder'), root, 'folder')
self.item = item = contained(C('item'), folder, 'item')
root.folder = folder
folder.item = item
self.tr = Traverser(root)
def testSimplePathString(self):
tr = self.tr
item = self.item
self.assertEqual(tr.traverse('/folder/item'), item)
self.assertEqual(tr.traverse('folder/item'), item)
self.assertEqual(tr.traverse('/folder/item/'), item)
def testSimplePathUnicode(self):
tr = self.tr
item = self.item
self.assertEqual(tr.traverse(u'/folder/item'), item)
self.assertEqual(tr.traverse(u'folder/item'), item)
self.assertEqual(tr.traverse(u'/folder/item/'), item)
def testSimplePathTuple(self):
tr = self.tr
item = self.item
self.assertEqual(tr.traverse(('', 'folder', 'item')), item)
self.assertEqual(tr.traverse(('folder', 'item')), item)
def testComplexPathString(self):
tr = self.tr
item = self.item
self.assertEqual(tr.traverse('/folder/../folder/./item'), item)
def testNotFoundDefault(self):
self.assertEqual(self.tr.traverse('foo', 'notFound'), 'notFound')
def testNotFoundNoDefault(self):
self.assertRaises(LocationError, self.tr.traverse, 'foo')
def testTraverseOldStyleClass(self):
class AnOldStyleClass:
x = object()
container = {}
container['theclass'] = AnOldStyleClass
tr = Traverser(container)
self.assertTrue(tr.traverse('theclass/x') is AnOldStyleClass.x)
def testTraversingDictSeesDictAPI(self):
adict = {
'foo': 'bar',
'anotherdict': {'bar': 'foo'},
'items': '123',
}
tr = Traverser(adict)
self.assertEqual(tr.traverse('items'), adict.items)
self.assertEqual(tr.traverse('anotherdict/bar'), 'foo')
self.assertEqual(tr.traverse('anotherdict/items'),
adict['anotherdict'].items)
def testTraversingDoesntFailOnStrings(self):
adict = {'foo': 'bar'}
tr = Traverser(adict)
# This used to raise type error before
self.assertRaises(LocationError, tr.traverse, 'foo/baz')
class ExceptionRaiser(C):
@property
def valueerror(self):
raise ValueError('booom')
@property
def attributeerror(self):
raise AttributeError('booom')
class RestrictedTraverseTests(PlacelessSetup, unittest.TestCase):
_oldPolicy = None
_deniedNames = ()
def setUp(self):
PlacelessSetup.setUp(self)
zope.component.provideAdapter(DefaultTraversable, (None,), ITraversable)
zope.component.provideAdapter(LocationPhysicallyLocatable, (None,),
ILocationInfo)
zope.component.provideAdapter(RootPhysicallyLocatable,
(IRoot,), ILocationInfo)
self.root = root = C('root')
directlyProvides(root, IRoot)
self.folder = folder = contained(C('folder'), root, 'folder')
self.item = item = contained(C('item'), folder, 'item')
root.folder = folder
folder.item = item
self.tr = Traverser(ProxyFactory(root))
def testAllAllowed(self):
defineChecker(C,
Checker({
'folder': CheckerPublic,
'item': CheckerPublic,
}))
tr = Traverser(ProxyFactory(self.root))
item = self.item
self.assertEqual(tr.traverse(('', 'folder', 'item')), item)
self.assertEqual(tr.traverse(('folder', 'item')), item)
def testItemDenied(self):
endInteraction()
newInteraction(ParticipationStub('no one'))
defineChecker(C, Checker({'item': 'Waaaa', 'folder': CheckerPublic}))
tr = Traverser(ProxyFactory(self.root))
folder = self.folder
self.assertRaises(Unauthorized, tr.traverse,
('', 'folder', 'item'))
self.assertRaises(Unauthorized, tr.traverse,
('folder', 'item'))
self.assertEqual(tr.traverse(('', 'folder')), folder)
self.assertEqual(tr.traverse(('folder', '..', 'folder')),
folder)
self.assertEqual(tr.traverse(('folder',)), folder)
def testException(self):
# nail the fact that AttributeError raised in a @property
# decorated method gets masked by traversal
self.root.foobar = ExceptionRaiser('foobar')
endInteraction()
newInteraction(ParticipationStub('no one'))
tr = Traverser(self.root)
# AttributeError becomes LocationError if there's no __getitem__
# on the object
self.assertRaises(LocationError, tr.traverse,
('foobar', 'attributeerror'))
# Other exceptions raised as usual
self.assertRaises(ValueError, tr.traverse,
('foobar', 'valueerror'))
class DefaultTraversableTests(unittest.TestCase):
def testImplementsITraversable(self):
self.assertTrue(ITraversable.providedBy(DefaultTraversable(None)))
def testVerifyInterfaces(self):
for interface in implementedBy(DefaultTraversable):
verifyClass(interface, DefaultTraversable)
def testAttributeTraverse(self):
root = C('root')
item = C('item')
root.item = item
df = DefaultTraversable(root)
further = []
next = df.traverse('item', further)
self.assertTrue(next is item)
self.assertEqual(further, [])
def testDictionaryTraverse(self):
dict = {}
foo = C('foo')
dict['foo'] = foo
df = DefaultTraversable(dict)
further = []
next = df.traverse('foo', further)
self.assertTrue(next is foo)
self.assertEqual(further, [])
def testNotFound(self):
df = DefaultTraversable(C('dummy'))
self.assertRaises(LocationError, df.traverse, 'bar', [])
def testUnicodeTraversal(self):
df = DefaultTraversable(object())
self.assertRaises(LocationError, df.traverse, u'\u2019', ())
class TestFunctions(unittest.TestCase):
def test_traversePathElement_UnicodeEncodeError_with_default(self):
test = self
class Traversable(object):
called = False
fail = test.fail
def traverse(self, nm, further_path):
self.called = True
u'\xff'.encode("ascii")
self.fail("Should not be reached")
t = Traversable()
self.assertIs(self,
adapters.traversePathElement(None, None, (),
default=self,
traversable=t))
self.assertTrue(t.called)
def test_traversePathElement_LocationError_with_default(self):
class Traversable(object):
called = False
def traverse(self, nm, further_path):
self.called = True
raise LocationError()
t = Traversable()
self.assertIs(self,
adapters.traversePathElement(None, None, (),
default=self,
traversable=t))
self.assertTrue(t.called)
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