check if category is present before creating it

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@25774 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/tests/testERP5Type.py

@@ -1353,6 +1353,8 @@ class TestPropertySheet:
       self.assertEquals(self.getPersonModule(), copy.getParentValue())
 
       # Test category accessor
+      gender = self.getCategoryTool().gender._getOb('male', None)
+      if gender is None:
         gender = self.getCategoryTool().gender.newContent(
                             portal_type='Category', id='male')
       # Category can not be used as asContext parameter