Forward-port test fix from 2.7 branch.

doc/CHANGES.txt

@@ -58,6 +58,9 @@ Zope Changes
 
     Bugs fixed
  
+      - Forward ported fix for OFS.CopySupport tests which corrected
+        signature of a faux security policy's 'validate' method.
+        
       - 'setup.py' did not install the 'Zope' compatibility module
         (the old 'Zope' package has been renamed to 'Zope2').
 

lib/python/OFS/tests/testCopySupport.py

@@ -281,7 +281,12 @@ class _SensitiveSecurityPolicy:
         self._lambdas = ( validate_lambda, checkPermission_lambda )
 
     def validate( self, *args, **kw ):
-        return self._lambdas[ 0 ]( *args, **kw )
+        from zExceptions import Unauthorized
+
+        allowed = self._lambdas[ 0 ]( *args, **kw )
+        if not allowed:
+            raise Unauthorized
+        return 1
 
     def checkPermission( self, *args, **kw ) :
         return self._lambdas[ 1 ]( *args, **kw )