check that the list of acknowledgement is empty before calling tic

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27473 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/tests/testAcknowledgementTool.py

@@ -102,6 +102,7 @@ class TestAcknowledgementTool(ERP5TypeTestCase):
     # transaction, this means that we look if the mechanism that looks at
     # activity tags is working or not
     event_acknowledgement_list = getEventAcknowlegementList()
+    self.assertEqual(0, len(event_acknowledgement_list))
     # We should not have any acknowledgements, tic is finished
     # the code should look directly for acnowledgement documents
     self.tic()