diff -r e5ad51352eb3 -r be5f68f9314e test/unittest_selectors.py
--- a/test/unittest_selectors.py	Mon Jul 04 16:46:29 2011 +0200
+++ b/test/unittest_selectors.py	Tue Jul 05 10:52:34 2011 +0200
@@ -26,7 +26,7 @@
 from cubicweb.appobject import Selector, AndSelector, OrSelector
 from cubicweb.selectors import (is_instance, adaptable, match_user_groups,
                                 multi_lines_rset, score_entity, is_in_state,
-                                on_transition, rql_condition)
+                                on_transition, rql_condition, relation_possible)
 from cubicweb.web import action
 
 
@@ -144,35 +144,6 @@
         self.assertEqual(selector(None), 0)
 
 
-class IsInStateSelectorTC(CubicWebTC):
-    def setup_database(self):
-        wf = self.shell().add_workflow("testwf", 'StateFull', default=True)
-        initial = wf.add_state(u'initial', initial=True)
-        final = wf.add_state(u'final')
-        wf.add_transition(u'forward', (initial,), final)
-
-    def test_initial_state(self):
-        req = self.request()
-        entity = req.create_entity('StateFull')
-        selector = is_in_state(u'initial')
-        self.commit()
-        score = selector(entity.__class__, None, entity=entity)
-        self.assertEqual(score, 1)
-
-    def test_final_state(self):
-        req = self.request()
-        entity = req.create_entity('StateFull')
-        selector = is_in_state(u'initial')
-        self.commit()
-        entity.cw_adapt_to('IWorkflowable').fire_transition(u'forward')
-        self.commit()
-        score = selector(entity.__class__, None, entity=entity)
-        self.assertEqual(score, 0)
-        selector = is_in_state(u'final')
-        score = selector(entity.__class__, None, entity=entity)
-        self.assertEqual(score, 1)
-
-
 class ImplementsSelectorTC(CubicWebTC):
     def test_etype_priority(self):
         req = self.request()
@@ -319,6 +290,27 @@
         self.assertEqual(selector(None, self.req, rset=self.rset), 0)
 
 
+class RelationPossibleTC(CubicWebTC):
+
+    def test_rqlst_1(self):
+        req = self.request()
+        selector = relation_possible('in_group')
+        select = self.vreg.parse(req, 'Any X WHERE X is CWUser').children[0]
+        score = selector(None, req, rset=1,
+                         select=select, filtered_variable=select.defined_vars['X'])
+        self.assertEqual(score, 1)
+
+    def test_rqlst_2(self):
+        req = self.request()
+        selector = relation_possible('in_group')
+        select = self.vreg.parse(req, 'Any 1, COUNT(X) WHERE X is CWUser, X creation_date XD, '
+                                 'Y creation_date YD, Y is CWGroup '
+                                 'HAVING DAY(XD)=DAY(YD)').children[0]
+        score = selector(None, req, rset=1,
+                         select=select, filtered_variable=select.defined_vars['X'])
+        self.assertEqual(score, 1)
+
+
 class MatchUserGroupsTC(CubicWebTC):
     def test_owners_group(self):
         """tests usage of 'owners' group with match_user_group"""