--- a/cubicweb/server/test/unittest_ldapsource.py	Wed Apr 12 16:07:25 2017 +0200
+++ b/cubicweb/server/test/unittest_ldapsource.py	Wed Apr 12 16:10:57 2017 +0200
@@ -34,7 +34,7 @@
 from six import string_types
 from six.moves import range
 
-from cubicweb import AuthenticationError
+from cubicweb import AuthenticationError, ValidationError
 from cubicweb.devtools.testlib import CubicWebTC
 from cubicweb.devtools.httptest import get_available_port
 
@@ -307,6 +307,33 @@
             self.assertIsNotNone(pwd)
             self.assertTrue(str(pwd))
 
+    def test_bad_config(self):
+        with self.admin_access.cnx() as cnx:
+
+            with self.assertRaises(ValidationError) as cm:
+                cnx.create_entity(
+                    'CWSource', name=u'erroneous', type=u'ldapfeed', parser=u'ldapfeed',
+                    url=u'ldap.com', config=CONFIG_LDAPFEED)
+            self.assertIn('badly formatted url',
+                          str(cm.exception))
+            cnx.rollback()
+
+            with self.assertRaises(ValidationError) as cm:
+                cnx.create_entity(
+                    'CWSource', name=u'erroneous', type=u'ldapfeed', parser=u'ldapfeed',
+                    url=u'http://ldap.com', config=CONFIG_LDAPFEED)
+            self.assertIn('unsupported protocol',
+                          str(cm.exception))
+            cnx.rollback()
+
+            with self.assertRaises(ValidationError) as cm:
+                cnx.create_entity(
+                    'CWSource', name=u'erroneous', type=u'ldapfeed', parser=u'ldapfeed',
+                    url=u'ldap://host1\nldap://host2', config=CONFIG_LDAPFEED)
+            self.assertIn('can only have one url',
+                          str(cm.exception))
+            cnx.rollback()
+
 
 class LDAPGeneratePwdTC(LDAPFeedTestBase):
     """