--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cubicweb/server/test/unittest_utils.py	Sat Jan 16 13:48:51 2016 +0100
@@ -0,0 +1,43 @@
+# copyright 2012 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
+#
+# This file is part of CubicWeb.
+#
+# CubicWeb is free software: you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation, either version 2.1 of the License, or (at your option)
+# any later version.
+#
+# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
+"""
+
+"""
+from logilab.common.testlib import TestCase, unittest_main
+
+from cubicweb.server import utils
+
+class UtilsTC(TestCase):
+    def test_crypt(self):
+        for hash in (
+            utils.crypt_password('xxx'), # default sha512
+            b'ab$5UsKFxRKKN.d8iBIFBnQ80', # custom md5
+            b'ab4Vlm81ZUHlg', # DES
+            ):
+            self.assertEqual(utils.crypt_password('xxx', hash), hash)
+            self.assertEqual(utils.crypt_password(u'xxx', hash), hash)
+            self.assertEqual(utils.crypt_password(u'xxx', hash.decode('ascii')), hash.decode('ascii'))
+            self.assertEqual(utils.crypt_password('yyy', hash), b'')
+
+        # accept any password for empty hashes (is it a good idea?)
+        self.assertEqual(utils.crypt_password('xxx', ''), '')
+        self.assertEqual(utils.crypt_password('yyy', ''), '')
+
+
+if __name__ == '__main__':
+    unittest_main()