Check if the preference is present into the portal.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@33605 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/tests/ERP5TypeTestCase.py

@@ -566,7 +566,10 @@ class ERP5TypeTestCase(backportUnittest.TestCase, PortalTestCase):
       """Update conversion server (Oood) at default site preferences.
       """
       conversion_dict = _getConversionServerDict()
-      preference = self.portal.portal_preferences.default_site_preference
+
+      preference = getattr(self.portal.portal_preferences, 
+                           'default_site_preference', None)
+      if preference is not None:
         preference.setPreferredOoodocServerAddress(conversion_dict['hostname'])
         preference.setPreferredOoodocServerPortNumber(conversion_dict['port'])