--- /dev/null
+# Copyright (C) 2010 by the Massachusetts Institute of Technology.
+# All rights reserved.
+
+# Export of this software from the United States of America may
+# require a specific license from the United States Government.
+# It is the responsibility of any person or organization contemplating
+# export to obtain such a license before exporting.
+#
+# WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+# distribute this software and its documentation for any purpose and
+# without fee is hereby granted, provided that the above copyright
+# notice appear in all copies and that both that copyright notice and
+# this permission notice appear in supporting documentation, and that
+# the name of M.I.T. not be used in advertising or publicity pertaining
+# to distribution of the software without specific, written prior
+# permission. Furthermore if you modify this software you must label
+# your software as modified software and not distribute it in such a
+# fashion that it might be confused with the original M.I.T. software.
+# M.I.T. makes no representations about the suitability of
+# this software for any purpose. It is provided "as is" without express
+# or implied warranty.
+
+#!/usr/bin/python
+from k5test import *
+
+realm = K5Realm(create_host=False)
+
+realm.run_kadminl('addpol -maxfailure 2 -failurecountinterval 5m lockout')
+realm.run_kadminl('modprinc +requires_preauth -policy lockout user')
+
+# kinit twice with the wrong password.
+output = realm.run_as_client([kinit, realm.user_princ], input='wrong\n',
+ expected_code=1)
+if 'Password incorrect while getting initial credentials' not in output:
+ fail('Expected error message not seen in kinit output')
+output = realm.run_as_client([kinit, realm.user_princ], input='wrong\n',
+ expected_code=1)
+if 'Password incorrect while getting initial credentials' not in output:
+ fail('Expected error message not seen in kinit output')
+
+# Now the account should be locked out.
+output = realm.run_as_client([kinit, realm.user_princ], expected_code=1)
+if 'Clients credentials have been revoked while getting initial credentials' \
+ not in output:
+ fail('Expected lockout error message not seen in kinit output')
+
+success('Account lockout.')
+