diff -r 07d75be1bb88 -r 3ae16f70add4 cubicweb/hooks/test/unittest_hooks.py
--- a/cubicweb/hooks/test/unittest_hooks.py	Fri Mar 24 14:18:17 2017 +0100
+++ b/cubicweb/hooks/test/unittest_hooks.py	Mon Mar 27 17:57:27 2017 +0200
@@ -30,6 +30,7 @@
 
 from cubicweb import ValidationError
 from cubicweb.devtools.testlib import CubicWebTC
+from cubicweb.server.hook import Operation
 
 
 class CoreHooksTC(CubicWebTC):
@@ -217,6 +218,21 @@
                               'login': u'login is part of violated unicity constraint'})
 
 
+class OperationTC(CubicWebTC):
+
+    def test_bad_postcommit_event(self):
+
+        class BadOp(Operation):
+            def postcommit_event(self):
+                raise RuntimeError('this is bad')
+
+        with self.admin_access.cnx() as cnx:
+            BadOp(cnx)
+            with self.assertRaises(RuntimeError) as cm:
+                cnx.commit()
+            self.assertEqual(str(cm.exception), 'this is bad')
+
+
 if __name__ == '__main__':
     import unittest
     unittest.main()