diff --git a/tempest/api/compute/admin/test_simple_tenant_usage.py b/tempest/api/compute/admin/test_simple_tenant_usage.py
index a599f06..c416ad2 100644
--- a/tempest/api/compute/admin/test_simple_tenant_usage.py
+++ b/tempest/api/compute/admin/test_simple_tenant_usage.py
@@ -18,7 +18,6 @@
 import datetime
 
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest.test import attr
 import time
 
@@ -83,33 +82,6 @@
         self.assertEqual(200, resp.status)
         self.assertEqual(len(tenant_usage), 8)
 
-    @attr(type=['negative', 'gate'])
-    def test_get_usage_tenant_with_empty_tenant_id(self):
-        # Get usage for a specific tenant empty
-        params = {'start': self.start,
-                  'end': self.end}
-        self.assertRaises(exceptions.NotFound,
-                          self.adm_client.get_tenant_usage,
-                          '', params)
-
-    @attr(type=['negative', 'gate'])
-    def test_get_usage_tenant_with_invalid_date(self):
-        # Get usage for tenant with invalid date
-        params = {'start': self.end,
-                  'end': self.start}
-        self.assertRaises(exceptions.BadRequest,
-                          self.adm_client.get_tenant_usage,
-                          self.tenant_id, params)
-
-    @attr(type=['negative', 'gate'])
-    def test_list_usage_all_tenants_with_non_admin_user(self):
-        # Get usage for all tenants with non admin user
-        params = {'start': self.start,
-                  'end': self.end,
-                  'detailed': int(bool(True))}
-        self.assertRaises(exceptions.Unauthorized,
-                          self.client.list_tenant_usages, params)
-
 
 class TenantUsagesTestXML(TenantUsagesTestJSON):
     _interface = 'xml'
diff --git a/tempest/api/compute/admin/test_simple_tenant_usage_negative.py b/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
new file mode 100644
index 0000000..7e5168e
--- /dev/null
+++ b/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
@@ -0,0 +1,76 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2013 NEC Corporation
+# 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.
+
+import datetime
+
+from tempest.api.compute import base
+from tempest import exceptions
+from tempest.test import attr
+
+
+class TenantUsagesNegativeTestJSON(base.BaseV2ComputeAdminTest):
+
+    _interface = 'json'
+
+    @classmethod
+    def setUpClass(cls):
+        super(TenantUsagesNegativeTestJSON, cls).setUpClass()
+        cls.adm_client = cls.os_adm.tenant_usages_client
+        cls.client = cls.os.tenant_usages_client
+        cls.identity_client = cls._get_identity_admin_client()
+        now = datetime.datetime.now()
+        cls.start = cls._parse_strtime(now - datetime.timedelta(days=1))
+        cls.end = cls._parse_strtime(now + datetime.timedelta(days=1))
+
+    @classmethod
+    def _parse_strtime(cls, at):
+        # Returns formatted datetime
+        return at.strftime('%Y-%m-%dT%H:%M:%S.%f')
+
+    @attr(type=['negative', 'gate'])
+    def test_get_usage_tenant_with_empty_tenant_id(self):
+        # Get usage for a specific tenant empty
+        params = {'start': self.start,
+                  'end': self.end}
+        self.assertRaises(exceptions.NotFound,
+                          self.adm_client.get_tenant_usage,
+                          '', params)
+
+    @attr(type=['negative', 'gate'])
+    def test_get_usage_tenant_with_invalid_date(self):
+        # Get usage for tenant with invalid date
+        params = {'start': self.end,
+                  'end': self.start}
+        resp, tenants = self.identity_client.list_tenants()
+        tenant_id = [tnt['id'] for tnt in tenants if tnt['name'] ==
+                     self.client.tenant_name][0]
+        self.assertRaises(exceptions.BadRequest,
+                          self.adm_client.get_tenant_usage,
+                          tenant_id, params)
+
+    @attr(type=['negative', 'gate'])
+    def test_list_usage_all_tenants_with_non_admin_user(self):
+        # Get usage for all tenants with non admin user
+        params = {'start': self.start,
+                  'end': self.end,
+                  'detailed': int(bool(True))}
+        self.assertRaises(exceptions.Unauthorized,
+                          self.client.list_tenant_usages, params)
+
+
+class TenantUsagesNegativeTestXML(TenantUsagesNegativeTestJSON):
+    _interface = 'xml'
diff --git a/tempest/api/compute/v3/admin/test_simple_tenant_usage.py b/tempest/api/compute/v3/admin/test_simple_tenant_usage.py
index 3fc58eb..99f2c52 100644
--- a/tempest/api/compute/v3/admin/test_simple_tenant_usage.py
+++ b/tempest/api/compute/v3/admin/test_simple_tenant_usage.py
@@ -18,7 +18,6 @@
 import datetime
 
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest.test import attr
 import time
 
@@ -83,33 +82,6 @@
         self.assertEqual(200, resp.status)
         self.assertEqual(len(tenant_usage), 8)
 
-    @attr(type=['negative', 'gate'])
-    def test_get_usage_tenant_with_empty_tenant_id(self):
-        # Get usage for a specific tenant empty
-        params = {'start': self.start,
-                  'end': self.end}
-        self.assertRaises(exceptions.NotFound,
-                          self.adm_client.get_tenant_usage,
-                          '', params)
-
-    @attr(type=['negative', 'gate'])
-    def test_get_usage_tenant_with_invalid_date(self):
-        # Get usage for tenant with invalid date
-        params = {'start': self.end,
-                  'end': self.start}
-        self.assertRaises(exceptions.BadRequest,
-                          self.adm_client.get_tenant_usage,
-                          self.tenant_id, params)
-
-    @attr(type=['negative', 'gate'])
-    def test_list_usage_all_tenants_with_non_admin_user(self):
-        # Get usage for all tenants with non admin user
-        params = {'start': self.start,
-                  'end': self.end,
-                  'detailed': int(bool(True))}
-        self.assertRaises(exceptions.Unauthorized,
-                          self.client.list_tenant_usages, params)
-
 
 class TenantUsagesV3TestXML(TenantUsagesV3TestJSON):
     _interface = 'xml'
diff --git a/tempest/api/compute/v3/admin/test_simple_tenant_usage_negative.py b/tempest/api/compute/v3/admin/test_simple_tenant_usage_negative.py
new file mode 100644
index 0000000..ef49ed7
--- /dev/null
+++ b/tempest/api/compute/v3/admin/test_simple_tenant_usage_negative.py
@@ -0,0 +1,76 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2013 NEC Corporation
+# 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.
+
+import datetime
+
+from tempest.api.compute import base
+from tempest import exceptions
+from tempest.test import attr
+
+
+class TenantUsagesNegativeV3TestJSON(base.BaseV3ComputeAdminTest):
+
+    _interface = 'json'
+
+    @classmethod
+    def setUpClass(cls):
+        super(TenantUsagesNegativeV3TestJSON, cls).setUpClass()
+        cls.adm_client = cls.os_adm.tenant_usages_client
+        cls.client = cls.os.tenant_usages_client
+        cls.identity_client = cls._get_identity_admin_client()
+        now = datetime.datetime.now()
+        cls.start = cls._parse_strtime(now - datetime.timedelta(days=1))
+        cls.end = cls._parse_strtime(now + datetime.timedelta(days=1))
+
+    @classmethod
+    def _parse_strtime(cls, at):
+        # Returns formatted datetime
+        return at.strftime('%Y-%m-%dT%H:%M:%S.%f')
+
+    @attr(type=['negative', 'gate'])
+    def test_get_usage_tenant_with_empty_tenant_id(self):
+        # Get usage for a specific tenant empty
+        params = {'start': self.start,
+                  'end': self.end}
+        self.assertRaises(exceptions.NotFound,
+                          self.adm_client.get_tenant_usage,
+                          '', params)
+
+    @attr(type=['negative', 'gate'])
+    def test_get_usage_tenant_with_invalid_date(self):
+        # Get usage for tenant with invalid date
+        params = {'start': self.end,
+                  'end': self.start}
+        resp, tenants = self.identity_client.list_tenants()
+        tenant_id = [tnt['id'] for tnt in tenants if tnt['name'] ==
+                     self.client.tenant_name][0]
+        self.assertRaises(exceptions.BadRequest,
+                          self.adm_client.get_tenant_usage,
+                          tenant_id, params)
+
+    @attr(type=['negative', 'gate'])
+    def test_list_usage_all_tenants_with_non_admin_user(self):
+        # Get usage for all tenants with non admin user
+        params = {'start': self.start,
+                  'end': self.end,
+                  'detailed': int(bool(True))}
+        self.assertRaises(exceptions.Unauthorized,
+                          self.client.list_tenant_usages, params)
+
+
+class TenantUsagesNegativeV3TestXML(TenantUsagesNegativeV3TestJSON):
+    _interface = 'xml'
diff --git a/tempest/api/identity/admin/v3/test_trusts.py b/tempest/api/identity/admin/v3/test_trusts.py
index 5e13a5a..242be2b 100644
--- a/tempest/api/identity/admin/v3/test_trusts.py
+++ b/tempest/api/identity/admin/v3/test_trusts.py
@@ -220,3 +220,22 @@
         self.assertRaises(exceptions.BadRequest,
                           self.create_trust,
                           expires=expires_str)
+
+    @attr(type='smoke')
+    def test_get_trusts_query(self):
+        self.create_trust()
+        resp, trusts_get = self.trustor_v3_client.get_trusts(
+            trustor_user_id=self.trustor_user_id)
+        self.assertEqual('200', resp['status'])
+        self.assertEqual(1, len(trusts_get))
+        self.validate_trust(trusts_get[0], summary=True)
+
+    @attr(type='smoke')
+    def test_get_trusts_all(self):
+        self.create_trust()
+        resp, trusts_get = self.v3_client.get_trusts()
+        self.assertEqual('200', resp['status'])
+        trusts = [t for t in trusts_get
+                  if t['id'] == self.trust_id]
+        self.assertEqual(1, len(trusts))
+        self.validate_trust(trusts[0], summary=True)
diff --git a/tempest/api/volume/base.py b/tempest/api/volume/base.py
index 643d021..9c841cc 100644
--- a/tempest/api/volume/base.py
+++ b/tempest/api/volume/base.py
@@ -16,6 +16,7 @@
 #    under the License.
 
 from tempest import clients
+from tempest.common.utils import data_utils
 from tempest.openstack.common import log as logging
 import tempest.test
 
@@ -71,7 +72,10 @@
     @classmethod
     def create_volume(cls, size=1, **kwargs):
         """Wrapper utility that returns a test volume."""
-        resp, volume = cls.volumes_client.create_volume(size, **kwargs)
+        vol_name = data_utils.rand_name('Volume')
+        resp, volume = cls.volumes_client.create_volume(size,
+                                                        display_name=vol_name,
+                                                        **kwargs)
         assert 200 == resp.status
         cls.volumes.append(volume)
         cls.volumes_client.wait_for_volume_status(volume['id'], 'available')
diff --git a/tempest/api/volume/test_volume_transfers.py b/tempest/api/volume/test_volume_transfers.py
index 71e9f85..34eab00 100644
--- a/tempest/api/volume/test_volume_transfers.py
+++ b/tempest/api/volume/test_volume_transfers.py
@@ -17,7 +17,6 @@
 
 from tempest.api.volume import base
 from tempest import clients
-from tempest.common.utils.data_utils import rand_name
 from tempest.test import attr
 
 
@@ -61,10 +60,7 @@
     @attr(type='gate')
     def test_create_get_list_accept_volume_transfer(self):
         # Create a volume first
-        vol_name = rand_name('-Volume-')
-        _, volume = self.client.create_volume(size=1, display_name=vol_name)
-        self.addCleanup(self.adm_client.delete_volume, volume['id'])
-        self.client.wait_for_volume_status(volume['id'], 'available')
+        volume = self.create_volume()
 
         # Create a volume transfer
         resp, transfer = self.client.create_volume_transfer(volume['id'])
@@ -93,10 +89,7 @@
 
     def test_create_list_delete_volume_transfer(self):
         # Create a volume first
-        vol_name = rand_name('-Volume-')
-        _, volume = self.client.create_volume(size=1, display_name=vol_name)
-        self.addCleanup(self.adm_client.delete_volume, volume['id'])
-        self.client.wait_for_volume_status(volume['id'], 'available')
+        volume = self.create_volume()
 
         # Create a volume transfer
         resp, body = self.client.create_volume_transfer(volume['id'])
diff --git a/tempest/api/volume/test_volumes_actions.py b/tempest/api/volume/test_volumes_actions.py
index 61f1bda..7a7ead6 100644
--- a/tempest/api/volume/test_volumes_actions.py
+++ b/tempest/api/volume/test_volumes_actions.py
@@ -31,24 +31,19 @@
         cls.client = cls.volumes_client
         cls.image_client = cls.os.image_client
 
-        # Create a test shared instance and volume for attach/detach tests
+        # Create a test shared instance
         srv_name = data_utils.rand_name(cls.__name__ + '-Instance-')
-        vol_name = data_utils.rand_name(cls.__name__ + '-Volume-')
         resp, cls.server = cls.servers_client.create_server(srv_name,
                                                             cls.image_ref,
                                                             cls.flavor_ref)
         cls.servers_client.wait_for_server_status(cls.server['id'], 'ACTIVE')
 
-        resp, cls.volume = cls.client.create_volume(size=1,
-                                                    display_name=vol_name)
-        cls.client.wait_for_volume_status(cls.volume['id'], 'available')
+        # Create a test shared volume for attach/detach tests
+        cls.volume = cls.create_volume()
 
     @classmethod
     def tearDownClass(cls):
-        # Delete the test instance and volume
-        cls.client.delete_volume(cls.volume['id'])
-        cls.client.wait_for_resource_deletion(cls.volume['id'])
-
+        # Delete the test instance
         cls.servers_client.delete_server(cls.server['id'])
         cls.client.wait_for_resource_deletion(cls.server['id'])
 
diff --git a/tempest/api/volume/test_volumes_get.py b/tempest/api/volume/test_volumes_get.py
index 6d1c25a..e342563 100644
--- a/tempest/api/volume/test_volumes_get.py
+++ b/tempest/api/volume/test_volumes_get.py
@@ -117,17 +117,10 @@
     @attr(type='gate')
     def test_volume_get_metadata_none(self):
         # Create a volume without passing metadata, get details, and delete
-        volume = {}
-        v_name = data_utils.rand_name('Volume-')
+
         # Create a volume without metadata
-        resp, volume = self.client.create_volume(size=1,
-                                                 display_name=v_name,
-                                                 metadata={})
-        self.assertEqual(200, resp.status)
-        self.assertIn('id', volume)
-        self.addCleanup(self._delete_volume, volume['id'])
-        self.assertIn('display_name', volume)
-        self.client.wait_for_volume_status(volume['id'], 'available')
+        volume = self.create_volume(metadata={})
+
         # GET Volume
         resp, fetched_volume = self.client.get_volume(volume['id'])
         self.assertEqual(200, resp.status)
@@ -145,8 +138,7 @@
 
     @attr(type='gate')
     def test_volume_create_get_update_delete_as_clone(self):
-        origin = self.create_volume(size=1,
-                                    display_name="Volume Origin")
+        origin = self.create_volume()
         self._volume_create_get_update_delete(source_volid=origin['id'])
 
 
diff --git a/tempest/api/volume/test_volumes_list.py b/tempest/api/volume/test_volumes_list.py
index c624a3a..be735a4 100644
--- a/tempest/api/volume/test_volumes_list.py
+++ b/tempest/api/volume/test_volumes_list.py
@@ -66,12 +66,9 @@
         cls.volume_id_list = []
         cls.metadata = {'Type': 'work'}
         for i in range(3):
-            v_name = data_utils.rand_name('volume')
             try:
-                resp, volume = cls.client.create_volume(size=1,
-                                                        display_name=v_name,
-                                                        metadata=cls.metadata)
-                cls.client.wait_for_volume_status(volume['id'], 'available')
+                volume = cls.create_volume(metadata=cls.metadata)
+
                 resp, volume = cls.client.get_volume(volume['id'])
                 cls.volume_list.append(volume)
                 cls.volume_id_list.append(volume['id'])
diff --git a/tempest/api/volume/test_volumes_negative.py b/tempest/api/volume/test_volumes_negative.py
index 869aedb..f14cfdc 100644
--- a/tempest/api/volume/test_volumes_negative.py
+++ b/tempest/api/volume/test_volumes_negative.py
@@ -32,10 +32,7 @@
         cls.client = cls.volumes_client
 
         # Create a test shared instance and volume for attach/detach tests
-        vol_name = data_utils.rand_name('Volume-')
-
-        cls.volume = cls.create_volume(size=1, display_name=vol_name)
-        cls.client.wait_for_volume_status(cls.volume['id'], 'available')
+        cls.volume = cls.create_volume()
         cls.mountpoint = "/dev/vdc"
 
     @attr(type=['negative', 'gate'])