diff -r c60c8dec0e0e -r aaf099172bb9 devtools/testlib.py
--- a/devtools/testlib.py	Mon Apr 07 14:15:35 2014 +0200
+++ b/devtools/testlib.py	Mon Apr 07 17:02:04 2014 +0200
@@ -704,11 +704,6 @@
         entity.cw_attr_cache.pop('modification_date', None)
         self.assertTrue(entity.modification_date > olddate)
 
-    def assertItemsEqual(self, it1, it2, *args, **kwargs):
-        it1 = set(getattr(x, 'eid', x) for x in it1)
-        it2 = set(getattr(x, 'eid', x) for x in it2)
-        super(CubicWebTC, self).assertItemsEqual(it1, it2, *args, **kwargs)
-
     def assertMessageEqual(self, req, params, expected_msg):
         msg = req.session.data[params['_cwmsgid']]
         self.assertEqual(expected_msg, msg)