diff -r 5ccc3bd8927e -r d260722f2453 dataimport/test/data/schema.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dataimport/test/data/schema.py	Fri Jun 26 16:09:27 2015 +0200
@@ -0,0 +1,29 @@
+# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
+#
+# This file is part of CubicWeb.
+#
+# CubicWeb is free software: you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation, either version 2.1 of the License, or (at your option)
+# any later version.
+#
+# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
+
+from yams.buildobjs import EntityType, String, SubjectRelation
+
+from cubicweb.schema import RQLConstraint
+
+
+class Personne(EntityType):
+    nom = String(required=True)
+    prenom = String()
+    enfant = SubjectRelation('Personne', inlined=True, cardinality='?*')
+    connait = SubjectRelation('Personne', symmetric=True,
+                              constraints=[RQLConstraint('NOT S identity O')])