Make sure transaction is not committed yet before (re)creating new objects.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@4101 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/tests/testPreferences.py

@@ -57,6 +57,7 @@ class TestPreferences(ERP5TypeTestCase):
     uf._doAddUser('manager', '', ['Manager', 'Owner', 'Assignor'], [])
     user = uf.getUserById('manager').__of__(uf)
     newSecurityManager(None, user)
+    if getattr(self.getPreferenceTool(), 'person1', None) is None :
       self.createPreferences()
   
   def createPreferences(self) :