[Zope3-checkins] SVN: Zope3/branches/3.2/ Ensured that 'zope.interface.ImplementedBy' is picklable.

[Tres Seaver]

Log message for revision 76390:
  Ensured that 'zope.interface.ImplementedBy' is picklable.
  
  o Fixes obscure ZClass test bug in Zope 2.9).
  

Changed:
  U   Zope3/branches/3.2/doc/CHANGES.txt
  U   Zope3/branches/3.2/src/zope/interface/declarations.py
  U   Zope3/branches/3.2/src/zope/interface/tests/test_declarations.py

-=-
Modified: Zope3/branches/3.2/doc/CHANGES.txt
===================================================================
--- Zope3/branches/3.2/doc/CHANGES.txt	2007-06-06 09:23:18 UTC (rev 76389)
+++ Zope3/branches/3.2/doc/CHANGES.txt	2007-06-06 09:27:08 UTC (rev 76390)
@@ -10,6 +10,9 @@
 
     Bug fixes
 
+      - Ensured that 'zope.interface.ImplementedBy' is picklable
+        (fixes obscure ZClass test bug in Zope 2.9).
+
       - #98111: z.a.form.browser.itemswidget.MultiDataHelper._toFieldValue()
         context._type attribute was being ignored when the result was an empty
         collection.

Modified: Zope3/branches/3.2/src/zope/interface/declarations.py
===================================================================
--- Zope3/branches/3.2/src/zope/interface/declarations.py	2007-06-06 09:23:18 UTC (rev 76389)
+++ Zope3/branches/3.2/src/zope/interface/declarations.py	2007-06-06 09:27:08 UTC (rev 76390)
@@ -271,6 +271,8 @@
     def __repr__(self):
         return '<implementedBy %s>' % (self.__name__)
 
+    def __reduce__(self):
+        return implementedBy, (self.inherit, )
 
 def implementedByFallback(cls):
     """Return the interfaces implemented for a class' instances

Modified: Zope3/branches/3.2/src/zope/interface/tests/test_declarations.py
===================================================================
--- Zope3/branches/3.2/src/zope/interface/tests/test_declarations.py	2007-06-06 09:23:18 UTC (rev 76389)
+++ Zope3/branches/3.2/src/zope/interface/tests/test_declarations.py	2007-06-06 09:27:08 UTC (rev 76390)
@@ -298,6 +298,12 @@
       >>> import zope.interface.declarations
       >>> impl = zope.interface.declarations.Implements(I1, I2)
 
+    Verify that we can pickle it:
+
+      >>> from cPickle import dumps, loads
+      >>> dilly = dumps(impl)
+      >>> new_impl = loads(dilly)
+
     Now, we'll emulate a declaration for a built-in type by putting
     it in BuiltinImplementationSpecifications: