add a method to reset generating reference

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@33776 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/tests/testAdvancedInvoicing.py

@@ -391,6 +391,10 @@ class TestAdvancedSaleInvoice(TestAdvancedInvoice):
   RUN_ALL_TESTS = 1
   login = TestAdvancedInvoice.login
 
+  def afterSetUp(self):
+    super(TestAdvancedSaleInvoice, self).afterSetUp()
+    self.portal.portal_ids.setLastGeneratedId(0, id_group='Accounting_Transaction_Module-Sale_Invoice_Transaction')
+
   def stepCheckInvoicesAndTransactionsConsistency(self, sequence=None, sequence_list=None,
                                                   **kw):
     """