[Zodb-checkins] CVS: ZODB3/persistent/tests -
test_pickle.py:1.2.8.1 testPersistent.py:1.2.8.1 __init__.py:1.2.8.1
Jeremy Hylton
jeremy at zope.com
Tue Dec 23 14:05:51 EST 2003
Update of /cvs-repository/ZODB3/persistent/tests
In directory cvs.zope.org:/tmp/cvs-serv26665/persistent/tests
Added Files:
Tag: ZODB3-mvcc-2-branch
test_pickle.py testPersistent.py __init__.py
Log Message:
Merge the head to the mvcc branch.
This merge should be the final preparation for merging the branch to
the trunk.
=== Added File ZODB3/persistent/tests/test_pickle.py ===
##############################################################################
#
# Copyright (c) 2003 Zope Corporation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.0 (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.
#
##############################################################################
"""Basic pickling tests
$Id: test_pickle.py,v 1.2.8.1 2003/12/23 19:05:48 jeremy Exp $
"""
from persistent import Persistent
import pickle
def print_dict(d):
d = d.items()
d.sort()
print '{%s}' % (', '.join(
[('%r: %r' % (k, v)) for (k, v) in d]
))
def cmpattrs(self, other, *attrs):
for attr in attrs:
if attr[:3] in ('_v_', '_p_'):
continue
c = cmp(getattr(self, attr, None), getattr(other, attr, None))
if c:
return c
return 0
class Simple(Persistent):
def __init__(self, name, **kw):
self.__name__ = name
self.__dict__.update(kw)
self._v_favorite_color = 'blue'
self._p_foo = 'bar'
def __cmp__(self, other):
return cmpattrs(self, other, '__class__', *(self.__dict__.keys()))
def test_basic_pickling():
"""
>>> x = Simple('x', aaa=1, bbb='foo')
>>> x.__getnewargs__()
()
>>> print_dict(x.__getstate__())
{'__name__': 'x', 'aaa': 1, 'bbb': 'foo'}
>>> f, (c,), state = x.__reduce__()
>>> f.__name__
'__newobj__'
>>> f.__module__
'copy_reg'
>>> c.__name__
'Simple'
>>> print_dict(state)
{'__name__': 'x', 'aaa': 1, 'bbb': 'foo'}
>>> pickle.loads(pickle.dumps(x)) == x
1
>>> pickle.loads(pickle.dumps(x, 0)) == x
1
>>> pickle.loads(pickle.dumps(x, 1)) == x
1
>>> pickle.loads(pickle.dumps(x, 2)) == x
1
>>> x.__setstate__({'z': 1})
>>> x.__dict__
{'z': 1}
"""
class Custom(Simple):
def __new__(cls, x, y):
r = Persistent.__new__(cls)
r.x, r.y = x, y
return r
def __init__(self, x, y):
self.a = 42
def __getnewargs__(self):
return self.x, self.y
def __getstate__(self):
return self.a
def __setstate__(self, a):
self.a = a
def test_pickling_w_overrides():
"""
>>> x = Custom('x', 'y')
>>> x.a = 99
>>> (f, (c, ax, ay), a) = x.__reduce__()
>>> f.__name__
'__newobj__'
>>> f.__module__
'copy_reg'
>>> c.__name__
'Custom'
>>> ax, ay, a
('x', 'y', 99)
>>> pickle.loads(pickle.dumps(x)) == x
1
>>> pickle.loads(pickle.dumps(x, 0)) == x
1
>>> pickle.loads(pickle.dumps(x, 1)) == x
1
>>> pickle.loads(pickle.dumps(x, 2)) == x
1
"""
class Slotted(Persistent):
__slots__ = 's1', 's2', '_p_splat', '_v_eek'
def __init__(self, s1, s2):
self.s1, self.s2 = s1, s2
self._v_eek = 1
self._p_splat = 2
class SubSlotted(Slotted):
__slots__ = 's3', 's4'
def __init__(self, s1, s2, s3):
Slotted.__init__(self, s1, s2)
self.s3 = s3
def __cmp__(self, other):
return cmpattrs(self, other, '__class__', 's1', 's2', 's3', 's4')
def test_pickling_w_slots_only():
"""
>>> x = SubSlotted('x', 'y', 'z')
>>> x.__getnewargs__()
()
>>> d, s = x.__getstate__()
>>> d
>>> print_dict(s)
{'s1': 'x', 's2': 'y', 's3': 'z'}
>>> pickle.loads(pickle.dumps(x)) == x
1
>>> pickle.loads(pickle.dumps(x, 0)) == x
1
>>> pickle.loads(pickle.dumps(x, 1)) == x
1
>>> pickle.loads(pickle.dumps(x, 2)) == x
1
>>> x.s4 = 'spam'
>>> d, s = x.__getstate__()
>>> d
>>> print_dict(s)
{'s1': 'x', 's2': 'y', 's3': 'z', 's4': 'spam'}
>>> pickle.loads(pickle.dumps(x)) == x
1
>>> pickle.loads(pickle.dumps(x, 0)) == x
1
>>> pickle.loads(pickle.dumps(x, 1)) == x
1
>>> pickle.loads(pickle.dumps(x, 2)) == x
1
"""
class SubSubSlotted(SubSlotted):
def __init__(self, s1, s2, s3, **kw):
SubSlotted.__init__(self, s1, s2, s3)
self.__dict__.update(kw)
self._v_favorite_color = 'blue'
self._p_foo = 'bar'
def __cmp__(self, other):
return cmpattrs(self, other,
'__class__', 's1', 's2', 's3', 's4',
*(self.__dict__.keys()))
def test_pickling_w_slots():
"""
>>> x = SubSubSlotted('x', 'y', 'z', aaa=1, bbb='foo')
>>> x.__getnewargs__()
()
>>> d, s = x.__getstate__()
>>> print_dict(d)
{'aaa': 1, 'bbb': 'foo'}
>>> print_dict(s)
{'s1': 'x', 's2': 'y', 's3': 'z'}
>>> pickle.loads(pickle.dumps(x)) == x
1
>>> pickle.loads(pickle.dumps(x, 0)) == x
1
>>> pickle.loads(pickle.dumps(x, 1)) == x
1
>>> pickle.loads(pickle.dumps(x, 2)) == x
1
>>> x.s4 = 'spam'
>>> d, s = x.__getstate__()
>>> print_dict(d)
{'aaa': 1, 'bbb': 'foo'}
>>> print_dict(s)
{'s1': 'x', 's2': 'y', 's3': 'z', 's4': 'spam'}
>>> pickle.loads(pickle.dumps(x)) == x
1
>>> pickle.loads(pickle.dumps(x, 0)) == x
1
>>> pickle.loads(pickle.dumps(x, 1)) == x
1
>>> pickle.loads(pickle.dumps(x, 2)) == x
1
"""
def test_pickling_w_slots_w_empty_dict():
"""
>>> x = SubSubSlotted('x', 'y', 'z')
>>> x.__getnewargs__()
()
>>> d, s = x.__getstate__()
>>> print_dict(d)
{}
>>> print_dict(s)
{'s1': 'x', 's2': 'y', 's3': 'z'}
>>> pickle.loads(pickle.dumps(x)) == x
1
>>> pickle.loads(pickle.dumps(x, 0)) == x
1
>>> pickle.loads(pickle.dumps(x, 1)) == x
1
>>> pickle.loads(pickle.dumps(x, 2)) == x
1
>>> x.s4 = 'spam'
>>> d, s = x.__getstate__()
>>> print_dict(d)
{}
>>> print_dict(s)
{'s1': 'x', 's2': 'y', 's3': 'z', 's4': 'spam'}
>>> pickle.loads(pickle.dumps(x)) == x
1
>>> pickle.loads(pickle.dumps(x, 0)) == x
1
>>> pickle.loads(pickle.dumps(x, 1)) == x
1
>>> pickle.loads(pickle.dumps(x, 2)) == x
1
"""
from doctest import DocTestSuite
import unittest
def test_suite():
return unittest.TestSuite((
DocTestSuite(),
))
if __name__ == '__main__': unittest.main()
=== Added File ZODB3/persistent/tests/testPersistent.py ===
#############################################################################
#
# Copyright (c) 2003 Zope Corporation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.0 (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 pickle
import time
import unittest
from persistent import Persistent
from persistent.cPickleCache import PickleCache
from persistent.TimeStamp import TimeStamp
from ZODB.utils import p64
class Jar(object):
"""Testing stub for _p_jar attribute."""
def __init__(self):
self.cache = PickleCache(self)
self.oid = 1
self.registered = {}
def add(self, obj):
obj._p_oid = p64(self.oid)
self.oid += 1
obj._p_jar = self
self.cache[obj._p_oid] = obj
def close(self):
pass
# the following methods must be implemented to be a jar
def setklassstate(self):
# I don't know what this method does, but the pickle cache
# constructor calls it.
pass
def register(self, obj):
self.registered[obj] = 1
def setstate(self, obj):
# Trivial setstate() implementation that just re-initializes
# the object. This isn't what setstate() is supposed to do,
# but it suffices for the tests.
obj.__class__.__init__(obj)
class P(Persistent):
pass
class H1(Persistent):
def __init__(self):
self.n = 0
def __getattr__(self, attr):
self.n += 1
return self.n
class H2(Persistent):
def __init__(self):
self.n = 0
def __getattribute__(self, attr):
supergetattr = super(H2, self).__getattribute__
try:
return supergetattr(attr)
except AttributeError:
n = supergetattr("n")
self.n = n + 1
return n + 1
class PersistenceTest(unittest.TestCase):
def setUp(self):
self.jar = Jar()
def tearDown(self):
self.jar.close()
def testOidAndJarAttrs(self):
obj = P()
self.assertEqual(obj._p_oid, None)
obj._p_oid = 12
self.assertEqual(obj._p_oid, 12)
del obj._p_oid
self.jar.add(obj)
# Can't change oid of cache object.
def deloid():
del obj._p_oid
self.assertRaises(ValueError, deloid)
def setoid():
obj._p_oid = 12
self.assertRaises(ValueError, setoid)
def deloid():
del obj._p_jar
self.assertRaises(ValueError, deloid)
def setoid():
obj._p_jar = 12
self.assertRaises(ValueError, setoid)
def testChanged(self):
obj = P()
self.jar.add(obj)
# The value returned for _p_changed can be one of:
# 0 -- it is not changed
# 1 -- it is changed
# None -- it is a ghost
obj.x = 1
self.assertEqual(obj._p_changed, 1)
self.assert_(obj in self.jar.registered)
obj._p_changed = 0
self.assertEqual(obj._p_changed, 0)
self.jar.registered.clear()
obj._p_changed = 1
self.assertEqual(obj._p_changed, 1)
self.assert_(obj in self.jar.registered)
# setting obj._p_changed to None ghostifies if the
# object is in the up-to-date state, but not otherwise.
obj._p_changed = None
self.assertEqual(obj._p_changed, 1)
obj._p_changed = 0
# Now it's a ghost.
obj._p_changed = None
self.assertEqual(obj._p_changed, None)
obj = P()
self.jar.add(obj)
obj._p_changed = 1
# You can transition directly from modified to ghost if
# you delete the _p_changed attribute.
del obj._p_changed
self.assertEqual(obj._p_changed, None)
def testSerial(self):
noserial = "\000" * 8
obj = P()
self.assertEqual(obj._p_serial, noserial)
def set(val):
obj._p_serial = val
self.assertRaises(ValueError, set, 1)
self.assertRaises(ValueError, set, "0123")
self.assertRaises(ValueError, set, "012345678")
self.assertRaises(ValueError, set, u"01234567")
obj._p_serial = "01234567"
del obj._p_serial
self.assertEqual(obj._p_serial, noserial)
def testMTime(self):
obj = P()
self.assertEqual(obj._p_mtime, None)
t = int(time.time())
ts = TimeStamp(*time.gmtime(t)[:6])
obj._p_serial = repr(ts)
self.assertEqual(obj._p_mtime, t)
self.assert_(isinstance(obj._p_mtime, float))
def testPicklable(self):
obj = P()
obj.attr = "test"
s = pickle.dumps(obj)
obj2 = pickle.loads(s)
self.assertEqual(obj.attr, obj2.attr)
def testGetattr(self):
obj = H1()
self.assertEqual(obj.larry, 1)
self.assertEqual(obj.curly, 2)
self.assertEqual(obj.moe, 3)
self.jar.add(obj)
obj._p_deactivate()
# The simple Jar used for testing re-initializes the object.
self.assertEqual(obj.larry, 1)
# The getattr hook modified the object, so it should now be
# in the changed state.
self.assertEqual(obj._p_changed, 1)
self.assertEqual(obj.curly, 2)
self.assertEqual(obj.moe, 3)
def testGetattribute(self):
obj = H2()
self.assertEqual(obj.larry, 1)
self.assertEqual(obj.curly, 2)
self.assertEqual(obj.moe, 3)
self.jar.add(obj)
obj._p_deactivate()
# The simple Jar used for testing re-initializes the object.
self.assertEqual(obj.larry, 1)
# The getattr hook modified the object, so it should now be
# in the changed state.
self.assertEqual(obj._p_changed, 1)
self.assertEqual(obj.curly, 2)
self.assertEqual(obj.moe, 3)
# XXX Need to decide how __setattr__ and __delattr__ should work,
# then write tests.
def test_suite():
return unittest.makeSuite(PersistenceTest)
=== Added File ZODB3/persistent/tests/__init__.py ===
# package
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