PersistentMapping was inadvertently pickling volatile attributes...

PersistentMapping was inadvertently pickling volatile attributes (http://www.zope.org/Collectors/Zope/2052).

NEWS.txt

@@ -10,6 +10,9 @@ development) since ZODB 3.4's last public release:
 PersistentMapping
 -----------------
 
+- (3.4.3b1) PersistentMapping was inadvertently pickling volatile attributes
+  (http://www.zope.org/Collectors/Zope/2052).
+
 - (3.4.3b1) Suppressed warnings about signedness of characters when compiling
   under GCC 4.0.x (http://www.zope.org/Collectors/Zope/2027).
 

src/persistent/mapping.py

@@ -98,8 +98,8 @@ class PersistentMapping(UserDict, persistent.Persistent):
     # actual internal dictionary using the name _container.
 
     def __getstate__(self):
-        state = {}
-        state.update(self.__dict__)
+        state = dict([x for x in self.__dict__.items()
+                        if not x[0].startswith('_v_')])
         state['_container'] = state['data']
         del state['data']
         return state

src/persistent/tests/test_list.py

@@ -11,11 +11,10 @@
 # FOR A PARTICULAR PURPOSE.
 #
 ##############################################################################
-"""Test the list interface to PersistentList
+"""Tests for PersistentList
 """
 
 import unittest
-from persistent.list import PersistentList
 
 l0 = []
 l1 = [0]
@@ -23,19 +22,33 @@ l2 = [0, 1]
 
 class TestPList(unittest.TestCase):
 
-    def testTheWorld(self):
-        # Test constructors
-        u = PersistentList()
-        u0 = PersistentList(l0)
-        u1 = PersistentList(l1)
-        u2 = PersistentList(l2)
+    def _getTargetClass(self):
+        from persistent.list import PersistentList
+        return PersistentList
 
-        uu = PersistentList(u)
-        uu0 = PersistentList(u0)
-        uu1 = PersistentList(u1)
-        uu2 = PersistentList(u2)
+    def test_volatile_attributes_not_persisted(self):
+        # http://www.zope.org/Collectors/Zope/2052
+        m = self._getTargetClass()()
+        m.foo = 'bar'
+        m._v_baz = 'qux'
+        state = m.__getstate__()
+        self.failUnless('foo' in state)
+        self.failIf('_v_baz' in state)
 
-        v = PersistentList(tuple(u))
+    def testTheWorld(self):
+        # Test constructors
+        pl = self._getTargetClass()
+        u = pl()
+        u0 = pl(l0)
+        u1 = pl(l1)
+        u2 = pl(l2)
+
+        uu = pl(u)
+        uu0 = pl(u0)
+        uu1 = pl(u1)
+        uu2 = pl(u2)
+
+        v = pl(tuple(u))
         class OtherList:
             def __init__(self, initlist):
                 self.__data = initlist
@@ -43,8 +56,8 @@ class TestPList(unittest.TestCase):
                 return len(self.__data)
             def __getitem__(self, i):
                 return self.__data[i]
-        v0 = PersistentList(OtherList(u0))
-        vv = PersistentList("this is also a sequence")
+        v0 = pl(OtherList(u0))
+        vv = pl("this is also a sequence")
 
         # Test __repr__
         eq = self.assertEqual
@@ -160,7 +173,7 @@ class TestPList(unittest.TestCase):
 
         # Test pop
 
-        u = PersistentList([0, -1, 1])
+        u = pl([0, -1, 1])
         u.pop()
         eq(u, [0, -1], "u == [0, -1]")
         u.pop(0)
@@ -200,7 +213,7 @@ class TestPList(unittest.TestCase):
 
         # Test sort
 
-        u = PersistentList([1, 0])
+        u = pl([1, 0])
         u.sort()
         eq(u, u2, "u == u2")
 

src/persistent/tests/test_mapping.py

 ##############################################################################
 #
-# Copyright (c) 2005 Zope Corporation and Contributors.
+# Copyright (c) 2006 Zope Corporation and Contributors.
 # All Rights Reserved.
 #
 # This software is subject to the provisions of the Zope Public License,
@@ -11,29 +11,42 @@
 # FOR A PARTICULAR PURPOSE.
 #
 ##############################################################################
-"""Test the mapping interface to PersistentMapping
+"""Test PersistentMapping
 """
 
 import unittest
-from persistent.mapping import PersistentMapping
 
 l0 = {}
 l1 = {0:0}
 l2 = {0:0, 1:1}
 
-class TestPMapping(unittest.TestCase):
+class MappingTests(unittest.TestCase):
+
+    def _getTargetClass(self):
+        from persistent.mapping import PersistentMapping
+        return PersistentMapping
+
+    def test_volatile_attributes_not_persisted(self):
+        # http://www.zope.org/Collectors/Zope/2052
+        m = self._getTargetClass()()
+        m.foo = 'bar'
+        m._v_baz = 'qux'
+        state = m.__getstate__()
+        self.failUnless('foo' in state)
+        self.failIf('_v_baz' in state)
 
     def testTheWorld(self):
         # Test constructors
-        u = PersistentMapping()
-        u0 = PersistentMapping(l0)
-        u1 = PersistentMapping(l1)
-        u2 = PersistentMapping(l2)
+        pm = self._getTargetClass()
+        u = pm()
+        u0 = pm(l0)
+        u1 = pm(l1)
+        u2 = pm(l2)
 
-        uu = PersistentMapping(u)
-        uu0 = PersistentMapping(u0)
-        uu1 = PersistentMapping(u1)
-        uu2 = PersistentMapping(u2)
+        uu = pm(u)
+        uu0 = pm(u0)
+        uu1 = pm(u1)
+        uu2 = pm(u2)
 
         class OtherMapping:
             def __init__(self, initmapping):
@@ -42,8 +55,8 @@ class TestPMapping(unittest.TestCase):
                 return self.__data.keys()
             def items(self):
                 return self.__data.items()
-        v0 = PersistentMapping(OtherMapping(u0))
-        vv = PersistentMapping([(0, 0), (1, 1)])
+        v0 = pm(OtherMapping(u0))
+        vv = pm([(0, 0), (1, 1)])
 
         # Test __repr__
         eq = self.assertEqual
@@ -107,7 +120,7 @@ class TestPMapping(unittest.TestCase):
         # Test update
 
         l = {"a":"b"}
-        u = PersistentMapping(l)
+        u = pm(l)
         u.update(u2)
         for i in u:
             self.failUnless(i in l or i in u2, "i in l or i in u2")
@@ -153,10 +166,8 @@ class TestPMapping(unittest.TestCase):
         u2.clear()
         eq(u2, {}, "u2 == {}")
 
-
 def test_suite():
-    return unittest.makeSuite(TestPMapping)
+    return unittest.makeSuite(MappingTests)
 
-if __name__ == "__main__":
-    loader = unittest.TestLoader()
-    unittest.main(testLoader=loader)
+if __name__ == '__main__':
+    unittest.main(defaultTest='test_suite')