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Commit 2ad69fde authored by Tres Seaver's avatar Tres Seaver
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Remove ancient BBB cruft module.

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src/persistent/tests/persistenttestbase.py deleted 100644 → 0
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##############################################################################
#
# Copyright (c) 2001, 2002 Zope Corporation 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.
#
##############################################################################
import unittest
from persistent import Persistent
from persistent.interfaces import IPersistent
# Confusing: ZODB doesn't use this file. It appears to be used only
# by Zope3, where it's imported by zope/app/schema/tests/test_wrapper.py.
try:
import zope.interface
except ImportError:
interfaces = False
else:
interfaces = True
class Test(unittest.TestCase):
klass = None # override in subclass
def testSaved(self):
p = self.klass()
p._p_oid = '\0\0\0\0\0\0hi'
dm = DM()
p._p_jar = dm
self.assertEqual(p._p_changed, 0)
self.assertEqual(dm.called, 0)
p.inc()
self.assertEqual(p._p_changed, 1)
self.assertEqual(dm.called, 1)
p.inc()
self.assertEqual(p._p_changed, 1)
self.assertEqual(dm.called, 1)
p._p_deactivate()
self.assertEqual(p._p_changed, 1)
self.assertEqual(dm.called, 1)
p._p_deactivate()
self.assertEqual(p._p_changed, 1)
self.assertEqual(dm.called, 1)
del p._p_changed
# deal with current cPersistence implementation
if p._p_changed != 3:
self.assertEqual(p._p_changed, None)
self.assertEqual(dm.called, 1)
p.inc()
self.assertEqual(p.x, 43)
self.assertEqual(p._p_changed, 1)
self.assertEqual(dm.called, 2)
p._p_changed = 0
self.assertEqual(p._p_changed, 0)
self.assertEqual(dm.called, 2)
self.assertEqual(p.x, 43)
p.inc()
self.assertEqual(p._p_changed, 1)
self.assertEqual(dm.called, 3)
def testUnsaved(self):
p = self.klass()
self.assertEqual(p.x, 0)
self.assertEqual(p._p_changed, 0)
self.assertEqual(p._p_jar, None)
self.assertEqual(p._p_oid, None)
p.inc()
p.inc()
self.assertEqual(p.x, 2)
self.assertEqual(p._p_changed, 0)
p._p_deactivate()
self.assertEqual(p._p_changed, 0)
p._p_changed = 1
self.assertEqual(p._p_changed, 0)
p._p_deactivate()
self.assertEqual(p._p_changed, 0)
del p._p_changed
self.assertEqual(p._p_changed, 0)
if self.has_dict:
self.failUnless(p.__dict__)
self.assertEqual(p.x, 2)
def testState(self):
p = self.klass()
self.assertEqual(p.__getstate__(), {'x': 0})
self.assertEqual(p._p_changed, 0)
p.__setstate__({'x':5})
self.assertEqual(p._p_changed, 0)
if self.has_dict:
p._v_foo = 2
self.assertEqual(p.__getstate__(), {'x': 5})
self.assertEqual(p._p_changed, 0)
def testSetStateSerial(self):
p = self.klass()
p._p_serial = '00000012'
p.__setstate__(p.__getstate__())
self.assertEqual(p._p_serial, '00000012')
def testDirectChanged(self):
p = self.klass()
p._p_oid = 1
dm = DM()
p._p_jar = dm
self.assertEqual(p._p_changed, 0)
self.assertEqual(dm.called, 0)
p._p_changed = 1
self.assertEqual(dm.called, 1)
def testGhostChanged(self):
# If an object is a ghost and its _p_changed is set to True (any
# true value), it should activate (unghostify) the object. This
# behavior is new in ZODB 3.6; before then, an attempt to do
# "ghost._p_changed = True" was ignored.
p = self.klass()
p._p_oid = 1
dm = DM()
p._p_jar = dm
p._p_deactivate()
self.assertEqual(p._p_changed, None)
p._p_changed = True
self.assertEqual(p._p_changed, 1)
def testRegistrationFailure(self):
p = self.klass()
p._p_oid = 1
dm = BrokenDM()
p._p_jar = dm
self.assertEqual(p._p_changed, 0)
self.assertEqual(dm.called, 0)
try:
p._p_changed = 1
except NotImplementedError:
pass
else:
raise AssertionError("Exception not propagated")
self.assertEqual(dm.called, 1)
self.assertEqual(p._p_changed, 0)
def testLoadFailure(self):
p = self.klass()
p._p_oid = 1
dm = BrokenDM()
p._p_jar = dm
p._p_deactivate() # make it a ghost
try:
p._p_activate()
except NotImplementedError:
pass
else:
raise AssertionError("Exception not propagated")
self.assertEqual(p._p_changed, None)
def testActivate(self):
p = self.klass()
dm = DM()
p._p_oid = 1
p._p_jar = dm
p._p_changed = 0
p._p_deactivate()
# Unsure: does this really test the activate method?
p._p_activate()
self.assertEqual(p._p_changed, 0)
self.assertEqual(p.x, 42)
def testDeactivate(self):
p = self.klass()
dm = DM()
p._p_oid = 1
p._p_deactivate() # this deactive has no effect
self.assertEqual(p._p_changed, 0)
p._p_jar = dm
p._p_changed = 0
p._p_deactivate()
self.assertEqual(p._p_changed, None)
p._p_activate()
self.assertEqual(p._p_changed, 0)
self.assertEqual(p.x, 42)
if interfaces:
def testInterface(self):
self.assert_(IPersistent.implementedBy(Persistent),
"%s does not implement IPersistent" % Persistent)
p = Persistent()
self.assert_(IPersistent.providedBy(p),
"%s does not implement IPersistent" % p)
self.assert_(IPersistent.implementedBy(P),
"%s does not implement IPersistent" % P)
p = self.klass()
self.assert_(IPersistent.providedBy(p),
"%s does not implement IPersistent" % p)
def testDataManagerAndAttributes(self):
# Test to cover an odd bug where the instance __dict__ was
# set at the same location as the data manager in the C type.
p = P()
p.inc()
p.inc()
self.assert_('x' in p.__dict__)
self.assert_(p._p_jar is None)
def testMultipleInheritance(self):
# make sure it is possible to inherit from two different
# subclasses of persistent.
class A(Persistent):
pass
class B(Persistent):
pass
class C(A, B):
pass
class D(object):
pass
class E(D, B):
pass
def testMultipleMeta(self):
# make sure it's possible to define persistent classes
# with a base whose metaclass is different
class alternateMeta(type):
pass
class alternate(object):
__metaclass__ = alternateMeta
class mixedMeta(alternateMeta, type):
pass
class mixed(alternate,Persistent):
__metaclass__ = mixedMeta
def testSlots(self):
# Verify that Persistent classes behave the same way
# as pure Python objects where '__slots__' and '__dict__'
# are concerned.
class noDict(object):
__slots__ = ['foo']
class shouldHaveDict(noDict):
pass
class p_noDict(Persistent):
__slots__ = ['foo']
class p_shouldHaveDict(p_noDict):
pass
self.assertEqual(noDict.__dictoffset__, 0)
self.assertEqual(p_noDict.__dictoffset__, 0)
self.assert_(shouldHaveDict.__dictoffset__ <> 0)
self.assert_(p_shouldHaveDict.__dictoffset__ <> 0)
def testBasicTypeStructure(self):
# test that a persistent class has a sane C type structure
# use P (defined below) as simplest example
self.assertEqual(Persistent.__dictoffset__, 0)
self.assertEqual(Persistent.__weakrefoffset__, 0)
self.assert_(Persistent.__basicsize__ > object.__basicsize__)
self.assert_(P.__dictoffset__)
self.assert_(P.__weakrefoffset__)
self.assert_(P.__dictoffset__ < P.__weakrefoffset__)
self.assert_(P.__basicsize__ > Persistent.__basicsize__)
# Unsure: Can anyone defend/explain the test below? The tests classes defined
# here don't define __call__, so this weird test will always pass, but to what
# end? If a klass is given that happens to define __call__, the test *may*
# mysteriously fail. Who cares?
## def testDeactivateErrors(self):
## p = self.klass()
## p._p_oid = '\0\0\0\0\0\0hi'
## dm = DM()
## p._p_jar = dm
## def typeerr(*args, **kwargs):
## self.assertRaises(TypeError, p, *args, **kwargs)
## typeerr(1)
## typeerr(1, 2)
## typeerr(spam=1)
## typeerr(spam=1, force=1)
## p._p_changed = True
## class Err(object):
## def __nonzero__(self):
## raise RuntimeError
## typeerr(force=Err())
class P(Persistent):
def __init__(self):
self.x = 0
def inc(self):
self.x += 1
class P2(P):
def __getstate__(self):
return 42
def __setstate__(self, v):
self.v = v
class B(Persistent):
__slots__ = ["x", "_p_serial"]
def __init__(self):
self.x = 0
def inc(self):
self.x += 1
def __getstate__(self):
return {'x': self.x}
def __setstate__(self, state):
self.x = state['x']
class DM:
def __init__(self):
self.called = 0
def register(self, ob):
self.called += 1
def setstate(self, ob):
ob.__setstate__({'x': 42})
class BrokenDM(DM):
def register(self,ob):
self.called += 1
raise NotImplementedError
def setstate(self,ob):
raise NotImplementedError
class PersistentTest(Test):
klass = P
has_dict = 1
def testPicklable(self):
import pickle
p = self.klass()
p.inc()
p2 = pickle.loads(pickle.dumps(p))
self.assertEqual(p2.__class__, self.klass)
# verify that the inc is reflected:
self.assertEqual(p2.x, p.x)
# This assertion would be invalid. Interfaces
# are compared by identity and copying doesn't
# preserve identity. We would get false negatives due
# to the differing identities of the original and copied
# PersistentInterface:
# self.assertEqual(p2.__dict__, p.__dict__)
def testPicklableWCustomState(self):
import pickle
p = P2()
p2 = pickle.loads(pickle.dumps(p))
self.assertEqual(p2.__class__, P2);
self.assertEqual(p2.__dict__, {'v': 42})
class BasePersistentTest(Test):
klass = B
has_dict = 0
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