diff --git a/library/tests/mock.py b/library/tests/mock.py
new file mode 100644
index 0000000..f3f549b
--- /dev/null
+++ b/library/tests/mock.py
@@ -0,0 +1,71 @@
+#!/usr/bin/env python
+
+import os
+import sys
+import getopt
+import unittest
+
+import dbus
+import dbus.service
+import dbus.glib
+import gobject
+
+class NotSupported(dbus.exceptions.DBusException):
+	def __init__(self, msg):
+		dbus.exceptions.DBusException.__init__(self, msg, name="org.freedesktop.DBus.Error.NotSupported")
+
+unique_identifier = 0
+def next_identifier():
+	global unique_identifier
+	unique_identifier += 1
+	return unique_identifier
+
+class SecretSession(dbus.service.Object):
+	def __init__(self, service, key):
+		global unique_identifier
+		self.key = key
+		self.path = "/org/freedesktop/secrets/sessions/%d" % next_identifier()
+		dbus.service.Object.__init__(self, service.bus_name, self.path)
+
+class SecretService(dbus.service.Object):
+
+	def __init__(self, name):
+		self.bus_name = dbus.service.BusName(name, bus = dbus.SessionBus())
+		dbus.service.Object.__init__(self, self.bus_name, '/org/freedesktop/secrets')
+		self.sessions = { }
+
+	def listen(self):
+		loop = gobject.MainLoop()
+		loop.run()
+
+	@dbus.service.method('org.freedesktop.Secret.Service')
+	def OpenSession(self, algorithm, input):
+		assert type(algorithm) == dbus.String
+		# assert type(input) == dbus.ByteArray
+
+		if algorithm == "plain":
+			session = SecretSession(self, None)
+			self.sessions[session.path] = session
+			return (dbus.String("", variant_level=1), session)
+
+		elif algorithm == "dh-ietf1024-sha256-aes128-cbc-pkcs7":
+			raise NotSupported("algorithm %s is not supported" % algorithm)
+
+		else:
+			assert False, "algorithm %s not recognized" % algorithm
+
+if __name__ == '__main__':
+	try:
+		opts, args = getopt.getopt(sys.argv[1:], "name", ["name="])
+	except getopt.GetoptError, err:
+		print str(err)
+		sys.exit(2)
+	name = 'org.freedesktop.Secret.MockService'
+	for o, a in opts:
+		if o in ("--name"):
+			name = a
+		else:
+			assert False, "unhandled option"
+
+	myservice = SecretService(name)
+	myservice.listen()
\ No newline at end of file