diff -r 058bb3dc685f -r 0b59724cb3f2 cubicweb/server/test/unittest_ssplanner.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cubicweb/server/test/unittest_ssplanner.py	Sat Jan 16 13:48:51 2016 +0100
@@ -0,0 +1,66 @@
+# 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 cubicweb.devtools import TestServerConfiguration, get_test_db_handler
+from cubicweb.devtools.repotest import BasePlannerTC, test_plan
+from cubicweb.server.ssplanner import SSPlanner
+
+# keep cnx so it's not garbage collected and the associated session closed
+def setUpModule(*args):
+    global repo, cnx
+    handler = get_test_db_handler(TestServerConfiguration(
+            'data', apphome=SSPlannerTC.datadir))
+    handler.build_db_cache()
+    global repo, cnx
+    repo, cnx = handler.get_repo_and_cnx()
+
+def tearDownModule(*args):
+    global repo, cnx
+    del repo, cnx
+
+class SSPlannerTC(BasePlannerTC):
+    _test = test_plan
+
+    def setUp(self):
+        self.__class__.repo = repo
+        BasePlannerTC.setUp(self)
+        self.planner = SSPlanner(self.o.schema, self.repo.vreg.rqlhelper)
+        self.system = self.o._repo.system_source
+
+    def tearDown(self):
+        BasePlannerTC.tearDown(self)
+
+    def test_ordered_ambigous_sol(self):
+        self._test('Any XN ORDERBY XN WHERE X name XN, X is IN (Basket, State, Folder)',
+                   [('OneFetchStep', [('Any XN ORDERBY XN WHERE X name XN, X is IN(Basket, State, Folder)',
+                                       [{'X': 'Basket', 'XN': 'String'},
+                                        {'X': 'State', 'XN': 'String'},
+                                        {'X': 'Folder', 'XN': 'String'}])],
+                     None, [])])
+
+    def test_groupeded_ambigous_sol(self):
+        self._test('Any XN,COUNT(X) GROUPBY XN WHERE X name XN, X is IN (Basket, State, Folder)',
+                   [('OneFetchStep', [('Any XN,COUNT(X) GROUPBY XN WHERE X name XN, X is IN(Basket, State, Folder)',
+                                       [{'X': 'Basket', 'XN': 'String'},
+                                        {'X': 'State', 'XN': 'String'},
+                                        {'X': 'Folder', 'XN': 'String'}])],
+                     None, [])])
+
+if __name__ == '__main__':
+    from logilab.common.testlib import unittest_main
+    unittest_main()