diff -r 000000000000 -r b97547f5f1fa server/test/unittest_hookhelper.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/server/test/unittest_hookhelper.py	Wed Nov 05 15:52:50 2008 +0100
@@ -0,0 +1,83 @@
+# -*- coding: utf-8 -*-
+"""unit/functional tests for cubicweb.server.hookhelper"""
+
+from logilab.common.testlib import unittest_main
+from cubicweb.devtools.apptest import RepositoryBasedTC
+
+from cubicweb.server.pool import LateOperation
+from cubicweb.server.hookhelper import *
+
+
+class HookHelpersTC(RepositoryBasedTC):
+    
+    def setUp(self):
+        RepositoryBasedTC.setUp(self)
+        self.hm = self.repo.hm
+    
+    def test_late_operation(self):
+        session = self.session
+        l1 = LateOperation(session)
+        l2 = LateOperation(session)
+        l3 = Operation(session)
+        self.assertEquals(session.pending_operations, [l3, l1, l2])
+        
+    def test_single_last_operation(self):
+        session = self.session
+        l0 = SingleLastOperation(session)
+        l1 = LateOperation(session)
+        l2 = LateOperation(session)
+        l3 = Operation(session)
+        self.assertEquals(session.pending_operations, [l3, l1, l2, l0])
+        l4 = SingleLastOperation(session)
+        self.assertEquals(session.pending_operations, [l3, l1, l2, l4])
+        
+    def test_global_operation_order(self):
+        from cubicweb.server import hooks, schemahooks
+        session = self.session
+        op1 = hooks.DelayedDeleteOp(session)
+        op2 = schemahooks.DelErdefOp(session)
+        # equivalent operation generated by op2 but replace it here by op3 so we
+        # can check the result...
+        op3 = schemahooks.UpdateSchemaOp(session)
+        op4 = hooks.DelayedDeleteOp(session)
+        op5 = hooks.CheckORelationOp(session)
+        self.assertEquals(session.pending_operations, [op1, op2, op4, op5, op3])
+                          
+       
+    def test_in_state_notification(self):
+        result = []
+        # test both email notification and transition_information
+        # whatever if we can connect to the default stmp server, transaction
+        # should not fail
+        def in_state_changed(session, eidfrom, rtype, eidto):
+            tr = previous_state(session, eidfrom)
+            if tr is None:
+                result.append(tr)
+                return
+            content = u'trÀnsition from %s to %s' % (tr.name, entity_name(session, eidto))
+            result.append(content)
+            SendMailOp(session, msg=content, recipients=['test@logilab.fr'])
+        self.hm.register_hook(in_state_changed,
+                             'before_add_relation', 'in_state')
+        self.execute('INSERT EUser X: X login "paf", X upassword "wouf", X in_state S, X in_group G WHERE S name "activated", G name "users"')
+        self.assertEquals(result, [None])
+        searchedops = [op for op in self.session.pending_operations
+                       if isinstance(op, SendMailOp)]
+        self.assertEquals(len(searchedops), 0,
+                          self.session.pending_operations)
+        self.commit()
+        self.execute('SET X in_state S WHERE X login "paf", S name "deactivated"')
+        self.assertEquals(result, [None, u'trÀnsition from activated to deactivated'])
+        # one to send the mail, one to close the smtp connection
+        searchedops = [op for op in self.session.pending_operations
+                       if isinstance(op, SendMailOp)]
+        self.assertEquals(len(searchedops), 1,
+                          self.session.pending_operations)
+        self.commit()
+        searchedops = [op for op in self.session.pending_operations
+                       if isinstance(op, SendMailOp)]
+        self.assertEquals(len(searchedops), 0,
+                          self.session.pending_operations)
+        
+if __name__ == '__main__':
+    unittest_main()