If test_tales_expression is not set for a Predicate, then it will

always be equal to its default value, namely 'python: True'



git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@41823 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Core/Predicate.py

@@ -209,7 +209,7 @@ class Predicate(XMLObject):
           if not result:
             return result
     test_tales_expression = self.getTestTalesExpression()
-    if test_tales_expression not in (None, '', 'python: True'):
+    if test_tales_expression != 'python: True':
       expression = Expression(test_tales_expression)
       from Products.ERP5Type.Utils import createExpressionContext
       # evaluate a tales expression with the tested value as context