diff --git a/tests/unit/test_eventlet_backdoor.py b/tests/unit/test_eventlet_backdoor.py
index 2577f6f..eb166da 100644
--- a/tests/unit/test_eventlet_backdoor.py
+++ b/tests/unit/test_eventlet_backdoor.py
@@ -21,14 +21,14 @@ import errno
 import socket
 
 import eventlet
+from oslotest import base as test_base
 
 from openstack.common import eventlet_backdoor
 from openstack.common.fixture import config
 from openstack.common.fixture import moxstubout
-from openstack.common import test
 
 
-class BackdoorPortTest(test.BaseTestCase):
+class BackdoorPortTest(test_base.BaseTestCase):
 
     def setUp(self):
         super(BackdoorPortTest, self).setUp()
diff --git a/tests/unit/test_loopingcall.py b/tests/unit/test_loopingcall.py
index 5030974..ab57674 100644
--- a/tests/unit/test_loopingcall.py
+++ b/tests/unit/test_loopingcall.py
@@ -15,14 +15,14 @@
 import datetime
 
 from eventlet import greenthread
+from oslotest import base as test_base
 from six.moves import mox
 
 from openstack.common import loopingcall
-from openstack.common import test
 from openstack.common import timeutils
 
 
-class LoopingCallTestCase(test.BaseTestCase):
+class LoopingCallTestCase(test_base.BaseTestCase):
 
     def setUp(self):
         super(LoopingCallTestCase, self).setUp()
diff --git a/tests/unit/test_periodic.py b/tests/unit/test_periodic.py
index f8313ff..423065e 100644
--- a/tests/unit/test_periodic.py
+++ b/tests/unit/test_periodic.py
@@ -19,10 +19,10 @@ Unit Tests for periodic_task decorator and PeriodicTasks class.
 """
 
 import mock
+from oslotest import base as test_base
 
 from openstack.common.fixture import config
 from openstack.common import periodic_task
-from openstack.common import test
 from testtools import matchers
 
 
@@ -54,7 +54,7 @@ class AService(periodic_task.PeriodicTasks):
         self.called['tocks'] += 1
 
 
-class PeriodicTasksTestCase(test.BaseTestCase):
+class PeriodicTasksTestCase(test_base.BaseTestCase):
     """Test cases for PeriodicTasks."""
 
     @mock.patch('time.time')
@@ -92,7 +92,7 @@ class PeriodicTasksTestCase(test.BaseTestCase):
                           None, raise_on_error=True)
 
 
-class ManagerMetaTestCase(test.BaseTestCase):
+class ManagerMetaTestCase(test_base.BaseTestCase):
     """Tests for the meta class which manages the creation of periodic tasks.
     """
 
@@ -119,7 +119,7 @@ class ManagerMetaTestCase(test.BaseTestCase):
             m._periodic_spacing, matchers.Not(matchers.Contains('baz')))
 
 
-class ManagerTestCase(test.BaseTestCase):
+class ManagerTestCase(test_base.BaseTestCase):
     """Tests the periodic tasks portion of the manager class."""
     def setUp(self):
         super(ManagerTestCase, self).setUp()
diff --git a/tests/unit/test_service.py b/tests/unit/test_service.py
index c54351d..cf9fe8e 100644
--- a/tests/unit/test_service.py
+++ b/tests/unit/test_service.py
@@ -32,6 +32,7 @@ import eventlet
 from eventlet import event
 import mock
 import mox
+from oslotest import base as test_base
 
 from openstack.common import eventlet_backdoor
 from openstack.common.fixture import config
@@ -39,7 +40,6 @@ from openstack.common.fixture import moxstubout
 from openstack.common import log as logging
 from openstack.common.notifier import api as notifier_api
 from openstack.common import service
-from openstack.common import test
 
 
 LOG = logging.getLogger(__name__)
@@ -50,7 +50,7 @@ class ExtendedService(service.Service):
         return 'service'
 
 
-class ServiceManagerTestCase(test.BaseTestCase):
+class ServiceManagerTestCase(test_base.BaseTestCase):
     """Test cases for Services."""
     def test_override_manager_method(self):
         serv = ExtendedService()
@@ -68,7 +68,7 @@ class ServiceWithTimer(service.Service):
         self.timer_fired = self.timer_fired + 1
 
 
-class ServiceTestBase(test.BaseTestCase):
+class ServiceTestBase(test_base.BaseTestCase):
     """A base class for ServiceLauncherTest and ServiceRestartTest."""
 
     def _wait(self, cond, timeout):
@@ -285,7 +285,7 @@ class _Service(service.Service):
         super(_Service, self).stop()
 
 
-class LauncherTest(test.BaseTestCase):
+class LauncherTest(test_base.BaseTestCase):
 
     def setUp(self):
         super(LauncherTest, self).setUp()
diff --git a/tests/unit/test_sslutils.py b/tests/unit/test_sslutils.py
index f68e4a1..0c5b2a5 100644
--- a/tests/unit/test_sslutils.py
+++ b/tests/unit/test_sslutils.py
@@ -14,11 +14,12 @@
 
 import ssl
 
+from oslotest import base as test_base
+
 from openstack.common import sslutils
-from openstack.common import test
 
 
-class SSLUtilsTest(test.BaseTestCase):
+class SSLUtilsTest(test_base.BaseTestCase):
     def test_valid_versions(self):
         self.assertEqual(sslutils.validate_ssl_version("SSLv3"),
                          ssl.PROTOCOL_SSLv3)
diff --git a/tests/unit/test_systemd.py b/tests/unit/test_systemd.py
index 6d027e5..c89a3e4 100644
--- a/tests/unit/test_systemd.py
+++ b/tests/unit/test_systemd.py
@@ -15,12 +15,13 @@
 import os
 import socket
 
+from oslotest import base as test_base
+
 from openstack.common.fixture import moxstubout
 from openstack.common import systemd
-from openstack.common import test
 
 
-class SystemdTestCase(test.BaseTestCase):
+class SystemdTestCase(test_base.BaseTestCase):
     """Test case for Systemd service readiness."""
     def setUp(self):
         super(SystemdTestCase, self).setUp()
diff --git a/tests/unit/test_threadgroup.py b/tests/unit/test_threadgroup.py
index c42394a..08446e2 100644
--- a/tests/unit/test_threadgroup.py
+++ b/tests/unit/test_threadgroup.py
@@ -17,11 +17,12 @@
 Unit Tests for thread groups
 """
 
-from openstack.common import test
+from oslotest import base as test_base
+
 from openstack.common import threadgroup
 
 
-class ThreadGroupTestCase(test.BaseTestCase):
+class ThreadGroupTestCase(test_base.BaseTestCase):
     """Test cases for thread group."""
     def setUp(self):
         super(ThreadGroupTestCase, self).setUp()