Index: vncdotool-1.0.0/tests/unit/test_command.py
===================================================================
--- vncdotool-1.0.0.orig/tests/unit/test_command.py
+++ vncdotool-1.0.0/tests/unit/test_command.py
@@ -1,5 +1,6 @@
 from vncdotool import command
 
+import os.path
 import socket
 import unittest
 import mock
@@ -207,8 +208,8 @@ class TestParseServer(object):
         assert port == 1111
 
     def test_unix_socket(self):
-        command.os.path.exists.return_value = True
-        family, host, port = command.parse_server('/some/path/unix.skt')
+        with mock.patch.object(os.path, 'exists', return_value=True):
+            family, host, port = command.parse_server('/some/path/unix.skt')
         assert family == socket.AF_UNIX
         assert host == '/some/path/unix.skt'
         assert port == 5900