testLegacySimulationAdvancedInvoicing wasn't creating all categories it used

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@45183 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Legacy/tests/testLegacySimulationInvoice.py

@@ -90,6 +90,7 @@ class TestInvoiceMixin(TestPackingListMixin,
   @UnrestrictedMethod
   def createCategories(self):
     """Create the categories for our test. """
+    super(TestInvoiceMixin, self).createCategories()
     for cat_string in self.getNeededCategoryList() :
       base_cat = cat_string.split("/")[0]
       path = self.getPortal().portal_categories[base_cat]