diff --git a/neutron/common/test_lib.py b/neutron/common/test_lib.py
new file mode 100644
index 00000000000..994de30f09f
--- /dev/null
+++ b/neutron/common/test_lib.py
@@ -0,0 +1,42 @@
+# Copyright (c) 2010 OpenStack Foundation
+# All Rights Reserved.
+#
+#    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.
+
+# Colorizer Code is borrowed from Twisted:
+# Copyright (c) 2001-2010 Twisted Matrix Laboratories.
+#
+#    Permission is hereby granted, free of charge, to any person obtaining
+#    a copy of this software and associated documentation files (the
+#    "Software"), to deal in the Software without restriction, including
+#    without limitation the rights to use, copy, modify, merge, publish,
+#    distribute, sublicense, and/or sell copies of the Software, and to
+#    permit persons to whom the Software is furnished to do so, subject to
+#    the following conditions:
+#
+#    The above copyright notice and this permission notice shall be
+#    included in all copies or substantial portions of the Software.
+#
+#    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+#    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+#    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+#    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+#    LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+#    OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+#    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+# describes parameters used by different unit/functional tests
+# a plugin-specific testing mechanism should import this dictionary
+# and override the values in it if needed (e.g., run_tests.py in
+# neutron/plugins/openvswitch/ )
+test_config = {}
diff --git a/neutron/tests/unit/db/test_db_base_plugin_v2.py b/neutron/tests/unit/db/test_db_base_plugin_v2.py
index 62f774053da..ba99aa62487 100644
--- a/neutron/tests/unit/db/test_db_base_plugin_v2.py
+++ b/neutron/tests/unit/db/test_db_base_plugin_v2.py
@@ -22,6 +22,7 @@ import netaddr
 from oslo_config import cfg
 from oslo_db import exception as db_exc
 from oslo_utils import importutils
+import six
 from sqlalchemy import orm
 from testtools import matchers
 import webob.exc
@@ -36,6 +37,7 @@ from neutron.callbacks import registry
 from neutron.common import constants
 from neutron.common import exceptions as n_exc
 from neutron.common import ipv6_utils
+from neutron.common import test_lib
 from neutron.common import utils
 from neutron import context
 from neutron.db import db_base_plugin_v2
@@ -104,8 +106,11 @@ class NeutronDbPluginV2TestCase(testlib_api.WebTestCase):
 
         # Update the plugin
         self.setup_coreplugin(plugin)
-        service_plugins = (service_plugins or {}).values()
-        cfg.CONF.set_override('service_plugins', list(service_plugins))
+        cfg.CONF.set_override(
+            'service_plugins',
+            [test_lib.test_config.get(key, default)
+             for key, default in six.iteritems(service_plugins or {})]
+        )
 
         cfg.CONF.set_override('base_mac', "12:34:56:78:90:ab")
         cfg.CONF.set_override('max_dns_nameservers', 2)
@@ -157,6 +162,14 @@ class NeutronDbPluginV2TestCase(testlib_api.WebTestCase):
         self.ext_api = None
         super(NeutronDbPluginV2TestCase, self).tearDown()
 
+    def setup_config(self):
+        # Create the default configurations
+        args = ['--config-file', base.etcdir('neutron.conf')]
+        # If test_config specifies some config-file, use it, as well
+        for config_file in test_lib.test_config.get('config_files', []):
+            args.extend(['--config-file', config_file])
+        super(NeutronDbPluginV2TestCase, self).setup_config(args=args)
+
     def _req(self, method, resource, data=None, fmt=None, id=None, params=None,
              action=None, subresource=None, sub_id=None, context=None):
         fmt = fmt or self.fmt