Do not use ActionMethod, which were removed.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@17647 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/tests/testWorklist.py

@@ -98,7 +98,7 @@ class TestWorklist(ERP5TypeTestCase):
         start_date = '01/01/1900',
         stop_date = '01/01/2900',
       )
-      assignment.openAction()
+      assignment.open()
     # Reindexing is required for the security to work
     get_transaction().commit()
     self.tic()