diff -r 058bb3dc685f -r 0b59724cb3f2 cubicweb/test/data/rrqlexpr_on_attr.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cubicweb/test/data/rrqlexpr_on_attr.py	Sat Jan 16 13:48:51 2016 +0100
@@ -0,0 +1,36 @@
+# copyright 2003-2014 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, RelationType, String
+from cubicweb.schema import RRQLExpression
+
+class ToTo(EntityType):
+    __permissions__ = {
+        'read': ('managers',),
+        'add': ('managers',),
+        'update': ('managers',),
+        'delete': ('managers',),
+        }
+    attr = String()
+
+class attr(RelationType):
+    __permissions__ = {
+        'read': ('managers', ),
+        'update': ('managers', RRQLExpression('S bla Y'),),
+        'add': ('managers', RRQLExpression('S bla Y'),),
+        }