define start date on inventory group

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@8318 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Banking/tests/TestERP5BankingMixin.py

@@ -661,7 +661,8 @@ class TestERP5BankingMixin:
       inventory_group =  self.cash_inventory_module.newContent(id=inventory_group_id,
                                                                portal_type='Cash Inventory Group',
                                                                source=None,
-                                                               destination_value=destination)
+                                                               destination_value=destination,
+                                                               start_date=DateTime())
       setattr(self, inventory_group_id, inventory_group)
     else:
       inventory_group = getattr(self, inventory_group_id)