diff --git a/tests/base.py b/tests/base.py
new file mode 100644
index 0000000..b349f13
--- /dev/null
+++ b/tests/base.py
@@ -0,0 +1,39 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2013 eNovance SAS <licensing@enovance.com>
+#
+# Author: Chmouel Boudjnah <chmouel@enovance.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+"""Test base classes imported from ceilometer.
+"""
+
+import unittest2
+
+import mox
+import stubout
+
+
+class TestCase(unittest2.TestCase):
+
+    def setUp(self):
+        super(TestCase, self).setUp()
+        self.mox = mox.Mox()
+        self.stubs = stubout.StubOutForTesting()
+
+    def tearDown(self):
+        self.mox.UnsetStubs()
+        self.stubs.UnsetAll()
+        self.stubs.SmartUnsetAll()
+        self.mox.VerifyAll()
+        super(TestCase, self).tearDown()
diff --git a/tests/test_accounts.py b/tests/test_accounts.py
index a75921f..75028eb 100644
--- a/tests/test_accounts.py
+++ b/tests/test_accounts.py
@@ -14,27 +14,29 @@
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 # License for the specific language governing permissions and limitations
 # under the License.
-import unittest2
 import swiftclient
 import keystoneclient
 
+import base as test_base
 import sync.accounts
 from fakes import FakeSWConnection, TENANTS_LIST, STORAGE_ORIG, \
     STORAGE_DEST, FakeSWClient, FakeKS, CONFIGDICT, CONTAINERS_LIST, \
     fake_get_config
 
 
-class TestAccount(unittest2.TestCase):
+class TestAccount(test_base.TestCase):
     def setUp(self):
+        super(TestAccount, self).setUp()
         self.accounts_cls = sync.accounts.Accounts()
-        self._monkey_patch()
+        self._stubs()
 
-    def _monkey_patch(self):
-        keystoneclient.v2_0.client = FakeKS
-        swiftclient.get_account = FakeSWClient.get_account
-        swiftclient.http_connection = FakeSWClient.http_connection
-        swiftclient.client.Connection = FakeSWConnection
-        sync.accounts.get_config = fake_get_config
+    def _stubs(self):
+        self.stubs.Set(keystoneclient.v2_0, 'client', FakeKS)
+        self.stubs.Set(swiftclient.client, 'Connection', FakeSWConnection)
+        self.stubs.Set(sync.accounts, 'get_config', fake_get_config)
+        self.stubs.Set(swiftclient, 'get_account', FakeSWClient.get_account)
+        self.stubs.Set(swiftclient, 'http_connection',
+                       FakeSWClient.http_connection)
 
     def test_get_swift_auth(self):
         tenant_name = 'foo1'