diff --git a/nova/tests/test_db_api.py b/nova/tests/test_db_api.py
new file mode 100644
index 00000000..107fd03e
--- /dev/null
+++ b/nova/tests/test_db_api.py
@@ -0,0 +1,86 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2010 United States Government as represented by the
+# Administrator of the National Aeronautics and Space Administration.
+# 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.
+
+"""Unit tests for the DB API"""
+
+from nova import test
+from nova import context
+from nova import db
+from nova import flags
+from nova.auth import manager
+
+FLAGS = flags.FLAGS
+
+
+def _setup_networking(instance_id, ip='1.2.3.4', flo_addr='1.2.1.2'):
+    ctxt = context.get_admin_context()
+    network_ref = db.project_get_networks(ctxt,
+                                           'fake',
+                                           associate=True)[0]
+    vif = {'address': '56:12:12:12:12:12',
+           'network_id': network_ref['id'],
+           'instance_id': instance_id}
+    vif_ref = db.virtual_interface_create(ctxt, vif)
+
+    fixed_ip = {'address': ip,
+                'network_id': network_ref['id'],
+                'virtual_interface_id': vif_ref['id'],
+                'allocated': True,
+                'instance_id': instance_id}
+    db.fixed_ip_create(ctxt, fixed_ip)
+    fix_ref = db.fixed_ip_get_by_address(ctxt, ip)
+    db.floating_ip_create(ctxt, {'address': flo_addr,
+                                        'fixed_ip_id': fix_ref.id})
+
+
+class DbApiTestCase(test.TestCase):
+    def setUp(self):
+        super(DbApiTestCase, self).setUp()
+        self.manager = manager.AuthManager()
+        self.user = self.manager.create_user('admin', 'admin', 'admin', True)
+        self.project = self.manager.create_project('proj', 'admin', 'proj')
+        self.context = context.RequestContext(user=self.user,
+                                              project=self.project)
+
+    def tearDown(self):
+        self.manager.delete_project(self.project)
+        self.manager.delete_user(self.user)
+        super(DbApiTestCase, self).tearDown()
+
+    def test_instance_get_project_vpn(self):
+        result = db.fixed_ip_get_all(self.context)
+        values = {'instance_type_id': FLAGS.default_instance_type,
+                  'image_ref': FLAGS.vpn_image_id,
+                  'project_id': self.project.id
+                 }
+        instance = db.instance_create(self.context, values)
+        result = db.instance_get_project_vpn(self.context, self.project.id)
+        self.assertEqual(instance.id, result.id)
+
+    def test_instance_get_project_vpn_joins(self):
+        result = db.fixed_ip_get_all(self.context)
+        values = {'instance_type_id': FLAGS.default_instance_type,
+                  'image_ref': FLAGS.vpn_image_id,
+                  'project_id': self.project.id
+                 }
+        instance = db.instance_create(self.context, values)
+        _setup_networking(instance.id)
+        result = db.instance_get_project_vpn(self.context, self.project.id)
+        self.assertEqual(instance.id, result.id)
+        self.assertEqual(result['fixed_ips'][0]['floating_ips'][0].address,
+                         '1.2.1.2')