diff --git a/tempest/api/compute/admin/test_aggregates_negative.py b/tempest/api/compute/admin/test_aggregates_negative.py
index 3c4e313..609eae6 100644
--- a/tempest/api/compute/admin/test_aggregates_negative.py
+++ b/tempest/api/compute/admin/test_aggregates_negative.py
@@ -40,6 +40,13 @@
                  for host in hosts_all if host['service'] == 'compute'])
         cls.host = hosts[0]
 
+    def _create_test_aggregate(self):
+        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
+        aggregate = (self.client.create_aggregate(name=aggregate_name)
+                     ['aggregate'])
+        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
+        return aggregate
+
     @test.attr(type=['negative'])
     @test.idempotent_id('86a1cb14-da37-4a70-b056-903fd56dfe29')
     def test_aggregate_create_as_user(self):
@@ -70,24 +77,16 @@
     @test.idempotent_id('9c23a291-b0b1-487b-b464-132e061151b3')
     def test_aggregate_create_with_existent_aggregate_name(self):
         # creating an aggregate with existent aggregate name is forbidden
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        aggregate = self.client.create_aggregate(name=aggregate_name)
-        self.addCleanup(self.client.delete_aggregate,
-                        aggregate['aggregate']['id'])
-
+        aggregate = self._create_test_aggregate()
         self.assertRaises(lib_exc.Conflict,
                           self.client.create_aggregate,
-                          name=aggregate_name)
+                          name=aggregate['name'])
 
     @test.attr(type=['negative'])
     @test.idempotent_id('cd6de795-c15d-45f1-8d9e-813c6bb72a3d')
     def test_aggregate_delete_as_user(self):
         # Regular user is not allowed to delete an aggregate.
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        aggregate = (self.client.create_aggregate(name=aggregate_name)
-                     ['aggregate'])
-        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
-
+        aggregate = self._create_test_aggregate()
         self.assertRaises(lib_exc.Forbidden,
                           self.user_client.delete_aggregate,
                           aggregate['id'])
@@ -103,11 +102,7 @@
     @test.idempotent_id('557cad12-34c9-4ff4-95f0-22f0dfbaf7dc')
     def test_aggregate_get_details_as_user(self):
         # Regular user is not allowed to get aggregate details.
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        aggregate = (self.client.create_aggregate(name=aggregate_name)
-                     ['aggregate'])
-        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
-
+        aggregate = self._create_test_aggregate()
         self.assertRaises(lib_exc.Forbidden,
                           self.user_client.show_aggregate,
                           aggregate['id'])
@@ -136,12 +131,7 @@
             non_exist_host = data_utils.rand_name('nonexist_host')
             if non_exist_host not in hosts:
                 break
-
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        aggregate = (self.client.create_aggregate(name=aggregate_name)
-                     ['aggregate'])
-        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
-
+        aggregate = self._create_test_aggregate()
         self.assertRaises(lib_exc.NotFound, self.client.add_host,
                           aggregate['id'], host=non_exist_host)
 
@@ -149,11 +139,7 @@
     @test.idempotent_id('7324c334-bd13-4c93-8521-5877322c3d51')
     def test_aggregate_add_host_as_user(self):
         # Regular user is not allowed to add a host to an aggregate.
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        aggregate = (self.client.create_aggregate(name=aggregate_name)
-                     ['aggregate'])
-        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
-
+        aggregate = self._create_test_aggregate()
         self.assertRaises(lib_exc.Forbidden,
                           self.user_client.add_host,
                           aggregate['id'], host=self.host)
@@ -162,10 +148,7 @@
     @test.idempotent_id('19dd44e1-c435-4ee1-a402-88c4f90b5950')
     def test_aggregate_add_existent_host(self):
         self.useFixture(fixtures.LockFixture('availability_zone'))
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        aggregate = (self.client.create_aggregate(name=aggregate_name)
-                     ['aggregate'])
-        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
+        aggregate = self._create_test_aggregate()
 
         self.client.add_host(aggregate['id'], host=self.host)
         self.addCleanup(self.client.remove_host, aggregate['id'],
@@ -179,10 +162,8 @@
     def test_aggregate_remove_host_as_user(self):
         # Regular user is not allowed to remove a host from an aggregate.
         self.useFixture(fixtures.LockFixture('availability_zone'))
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        aggregate = (self.client.create_aggregate(name=aggregate_name)
-                     ['aggregate'])
-        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
+        aggregate = self._create_test_aggregate()
+
         self.client.add_host(aggregate['id'], host=self.host)
         self.addCleanup(self.client.remove_host, aggregate['id'],
                         host=self.host)
@@ -194,11 +175,8 @@
     @test.attr(type=['negative'])
     @test.idempotent_id('95d6a6fa-8da9-4426-84d0-eec0329f2e4d')
     def test_aggregate_remove_nonexistent_host(self):
-        non_exist_host = data_utils.rand_name('nonexist_host')
-        aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        aggregate = (self.client.create_aggregate(name=aggregate_name)
-                     ['aggregate'])
-        self.addCleanup(self.client.delete_aggregate, aggregate['id'])
+        aggregate = self._create_test_aggregate()
 
+        non_exist_host = data_utils.rand_name('nonexist_host')
         self.assertRaises(lib_exc.NotFound, self.client.remove_host,
                           aggregate['id'], host=non_exist_host)
diff --git a/tempest/api/compute/admin/test_auto_allocate_network.py b/tempest/api/compute/admin/test_auto_allocate_network.py
index ee8ed14..4eb3376 100644
--- a/tempest/api/compute/admin/test_auto_allocate_network.py
+++ b/tempest/api/compute/admin/test_auto_allocate_network.py
@@ -66,7 +66,6 @@
     @classmethod
     def setup_clients(cls):
         super(AutoAllocateNetworkTest, cls).setup_clients()
-        cls.servers_client = cls.servers_client
         cls.networks_client = cls.os.networks_client
         cls.routers_client = cls.os.routers_client
         cls.subnets_client = cls.os.subnets_client
diff --git a/tempest/api/compute/admin/test_floating_ips_bulk.py b/tempest/api/compute/admin/test_floating_ips_bulk.py
index e207aed..a4695b0 100644
--- a/tempest/api/compute/admin/test_floating_ips_bulk.py
+++ b/tempest/api/compute/admin/test_floating_ips_bulk.py
@@ -17,6 +17,7 @@
 
 from tempest.api.compute import base
 from tempest import config
+from tempest.lib.common.utils import test_utils
 from tempest.lib import exceptions
 from tempest import test
 
@@ -54,12 +55,6 @@
                 raise exceptions.InvalidConfiguration(msg)
         return
 
-    def _delete_floating_ips_bulk(self, ip_range):
-        try:
-            self.client.delete_floating_ips_bulk(ip_range)
-        except Exception:
-            pass
-
     @test.idempotent_id('2c8f145f-8012-4cb8-ac7e-95a587f0e4ab')
     @test.services('network')
     def test_create_list_delete_floating_ips_bulk(self):
@@ -73,7 +68,8 @@
                                                      pool,
                                                      interface)
                 ['floating_ips_bulk_create'])
-        self.addCleanup(self._delete_floating_ips_bulk, self.ip_range)
+        self.addCleanup(test_utils.call_and_ignore_notfound_exc,
+                        self.client.delete_floating_ips_bulk, self.ip_range)
         self.assertEqual(self.ip_range, body['ip_range'])
         ips_list = self.client.list_floating_ips_bulk()['floating_ip_info']
         self.assertNotEqual(0, len(ips_list))
diff --git a/tempest/api/compute/admin/test_hosts_negative.py b/tempest/api/compute/admin/test_hosts_negative.py
index c270829..3821b22 100644
--- a/tempest/api/compute/admin/test_hosts_negative.py
+++ b/tempest/api/compute/admin/test_hosts_negative.py
@@ -13,7 +13,6 @@
 #    under the License.
 
 from tempest.api.compute import base
-from tempest.common.utils import data_utils
 from tempest.lib import exceptions as lib_exc
 from tempest import test
 
@@ -27,11 +26,13 @@
         cls.client = cls.os_adm.hosts_client
         cls.non_admin_client = cls.os.hosts_client
 
-    def _get_host_name(self):
-        hosts = self.client.list_hosts()['hosts']
-        self.assertGreaterEqual(len(hosts), 1)
-        hostname = hosts[0]['host_name']
-        return hostname
+    @classmethod
+    def resource_setup(cls):
+        super(HostsAdminNegativeTestJSON, cls).resource_setup()
+        hosts = cls.client.list_hosts()['hosts']
+        if not hosts:
+            raise lib_exc.NotFound("no host found")
+        cls.hostname = hosts[0]['host_name']
 
     @test.attr(type=['negative'])
     @test.idempotent_id('dd032027-0210-4d9c-860e-69b1b8deed5f')
@@ -42,27 +43,22 @@
     @test.attr(type=['negative'])
     @test.idempotent_id('e75b0a1a-041f-47a1-8b4a-b72a6ff36d3f')
     def test_show_host_detail_with_nonexistent_hostname(self):
-        nonexitent_hostname = data_utils.rand_name('rand_hostname')
         self.assertRaises(lib_exc.NotFound,
-                          self.client.show_host, nonexitent_hostname)
+                          self.client.show_host, 'nonexistent_hostname')
 
     @test.attr(type=['negative'])
     @test.idempotent_id('19ebe09c-bfd4-4b7c-81a2-e2e0710f59cc')
     def test_show_host_detail_with_non_admin_user(self):
-        hostname = self._get_host_name()
-
         self.assertRaises(lib_exc.Forbidden,
                           self.non_admin_client.show_host,
-                          hostname)
+                          self.hostname)
 
     @test.attr(type=['negative'])
     @test.idempotent_id('e40c72b1-0239-4ed6-ba21-81a184df1f7c')
     def test_update_host_with_non_admin_user(self):
-        hostname = self._get_host_name()
-
         self.assertRaises(lib_exc.Forbidden,
                           self.non_admin_client.update_host,
-                          hostname,
+                          self.hostname,
                           status='enable',
                           maintenance_mode='enable')
 
@@ -70,11 +66,9 @@
     @test.idempotent_id('fbe2bf3e-3246-4a95-a59f-94e4e298ec77')
     def test_update_host_with_invalid_status(self):
         # 'status' can only be 'enable' or 'disable'
-        hostname = self._get_host_name()
-
         self.assertRaises(lib_exc.BadRequest,
                           self.client.update_host,
-                          hostname,
+                          self.hostname,
                           status='invalid',
                           maintenance_mode='enable')
 
@@ -82,11 +76,9 @@
     @test.idempotent_id('ab1e230e-5e22-41a9-8699-82b9947915d4')
     def test_update_host_with_invalid_maintenance_mode(self):
         # 'maintenance_mode' can only be 'enable' or 'disable'
-        hostname = self._get_host_name()
-
         self.assertRaises(lib_exc.BadRequest,
                           self.client.update_host,
-                          hostname,
+                          self.hostname,
                           status='enable',
                           maintenance_mode='invalid')
 
@@ -94,73 +86,57 @@
     @test.idempotent_id('0cd85f75-6992-4a4a-b1bd-d11e37fd0eee')
     def test_update_host_without_param(self):
         # 'status' or 'maintenance_mode' needed for host update
-        hostname = self._get_host_name()
-
         self.assertRaises(lib_exc.BadRequest,
                           self.client.update_host,
-                          hostname)
+                          self.hostname)
 
     @test.attr(type=['negative'])
     @test.idempotent_id('23c92146-2100-4d68-b2d6-c7ade970c9c1')
     def test_update_nonexistent_host(self):
-        nonexitent_hostname = data_utils.rand_name('rand_hostname')
-
         self.assertRaises(lib_exc.NotFound,
                           self.client.update_host,
-                          nonexitent_hostname,
+                          'nonexistent_hostname',
                           status='enable',
                           maintenance_mode='enable')
 
     @test.attr(type=['negative'])
     @test.idempotent_id('0d981ac3-4320-4898-b674-82b61fbb60e4')
     def test_startup_nonexistent_host(self):
-        nonexitent_hostname = data_utils.rand_name('rand_hostname')
-
         self.assertRaises(lib_exc.NotFound,
                           self.client.startup_host,
-                          nonexitent_hostname)
+                          'nonexistent_hostname')
 
     @test.attr(type=['negative'])
     @test.idempotent_id('9f4ebb7e-b2ae-4e5b-a38f-0fd1bb0ddfca')
     def test_startup_host_with_non_admin_user(self):
-        hostname = self._get_host_name()
-
         self.assertRaises(lib_exc.Forbidden,
                           self.non_admin_client.startup_host,
-                          hostname)
+                          self.hostname)
 
     @test.attr(type=['negative'])
     @test.idempotent_id('9e637444-29cf-4244-88c8-831ae82c31b6')
     def test_shutdown_nonexistent_host(self):
-        nonexitent_hostname = data_utils.rand_name('rand_hostname')
-
         self.assertRaises(lib_exc.NotFound,
                           self.client.shutdown_host,
-                          nonexitent_hostname)
+                          'nonexistent_hostname')
 
     @test.attr(type=['negative'])
     @test.idempotent_id('a803529c-7e3f-4d3c-a7d6-8e1c203d27f6')
     def test_shutdown_host_with_non_admin_user(self):
-        hostname = self._get_host_name()
-
         self.assertRaises(lib_exc.Forbidden,
                           self.non_admin_client.shutdown_host,
-                          hostname)
+                          self.hostname)
 
     @test.attr(type=['negative'])
     @test.idempotent_id('f86bfd7b-0b13-4849-ae29-0322e83ee58b')
     def test_reboot_nonexistent_host(self):
-        nonexitent_hostname = data_utils.rand_name('rand_hostname')
-
         self.assertRaises(lib_exc.NotFound,
                           self.client.reboot_host,
-                          nonexitent_hostname)
+                          'nonexistent_hostname')
 
     @test.attr(type=['negative'])
     @test.idempotent_id('02d79bb9-eb57-4612-abf6-2cb38897d2f8')
     def test_reboot_host_with_non_admin_user(self):
-        hostname = self._get_host_name()
-
         self.assertRaises(lib_exc.Forbidden,
                           self.non_admin_client.reboot_host,
-                          hostname)
+                          self.hostname)
diff --git a/tempest/api/compute/admin/test_quotas.py b/tempest/api/compute/admin/test_quotas.py
index 7d97ce2..ce0adb4 100644
--- a/tempest/api/compute/admin/test_quotas.py
+++ b/tempest/api/compute/admin/test_quotas.py
@@ -74,7 +74,8 @@
                          'ram': 10240, 'floating_ips': 20, 'fixed_ips': 10,
                          'key_pairs': 200, 'injected_file_path_bytes': 512,
                          'instances': 20, 'security_group_rules': 20,
-                         'cores': 2, 'security_groups': 20}
+                         'cores': 2, 'security_groups': 20,
+                         'server_groups': 20, 'server_group_members': 20}
         # Update limits for all quota resources
         quota_set = self.adm_client.update_quota_set(
             self.demo_tenant_id,
@@ -82,13 +83,6 @@
             **new_quota_set)['quota_set']
 
         default_quota_set.pop('id')
-        # NOTE(PhilDay) The following is safe as we're not updating these
-        # two quota values yet.  Once the Nova change to add these is merged
-        # and the client updated to support them this can be removed
-        if 'server_groups' in default_quota_set:
-            default_quota_set.pop('server_groups')
-        if 'server_group_members' in default_quota_set:
-            default_quota_set.pop('server_group_members')
         self.addCleanup(self.adm_client.update_quota_set,
                         self.demo_tenant_id, **default_quota_set)
         for quota in new_quota_set:
diff --git a/tempest/api/compute/admin/test_quotas_negative.py b/tempest/api/compute/admin/test_quotas_negative.py
index d6aba5b..015e14d 100644
--- a/tempest/api/compute/admin/test_quotas_negative.py
+++ b/tempest/api/compute/admin/test_quotas_negative.py
@@ -40,6 +40,17 @@
         # tenant most of them should be skipped if we can't do that
         cls.demo_tenant_id = cls.client.tenant_id
 
+    def _update_quota(self, quota_item, quota_value):
+        quota_set = (self.adm_client.show_quota_set(self.demo_tenant_id)
+                     ['quota_set'])
+        default_quota_value = quota_set[quota_item]
+
+        self.adm_client.update_quota_set(self.demo_tenant_id,
+                                         force=True,
+                                         **{quota_item: quota_value})
+        self.addCleanup(self.adm_client.update_quota_set, self.demo_tenant_id,
+                        **{quota_item: default_quota_value})
+
     @test.attr(type=['negative'])
     @test.idempotent_id('733abfe8-166e-47bb-8363-23dbd7ff3476')
     def test_update_quota_normal_user(self):
@@ -54,17 +65,7 @@
     @test.idempotent_id('91058876-9947-4807-9f22-f6eb17140d9b')
     def test_create_server_when_cpu_quota_is_full(self):
         # Disallow server creation when tenant's vcpu quota is full
-        quota_set = (self.adm_client.show_quota_set(self.demo_tenant_id)
-                     ['quota_set'])
-        default_vcpu_quota = quota_set['cores']
-        vcpu_quota = 0  # Set the quota to zero to conserve resources
-
-        self.adm_client.update_quota_set(self.demo_tenant_id,
-                                         force=True,
-                                         cores=vcpu_quota)
-
-        self.addCleanup(self.adm_client.update_quota_set, self.demo_tenant_id,
-                        cores=default_vcpu_quota)
+        self._update_quota('cores', 0)
         self.assertRaises((lib_exc.Forbidden, lib_exc.OverLimit),
                           self.create_test_server)
 
@@ -72,17 +73,7 @@
     @test.idempotent_id('6fdd7012-584d-4327-a61c-49122e0d5864')
     def test_create_server_when_memory_quota_is_full(self):
         # Disallow server creation when tenant's memory quota is full
-        quota_set = (self.adm_client.show_quota_set(self.demo_tenant_id)
-                     ['quota_set'])
-        default_mem_quota = quota_set['ram']
-        mem_quota = 0  # Set the quota to zero to conserve resources
-
-        self.adm_client.update_quota_set(self.demo_tenant_id,
-                                         force=True,
-                                         ram=mem_quota)
-
-        self.addCleanup(self.adm_client.update_quota_set, self.demo_tenant_id,
-                        ram=default_mem_quota)
+        self._update_quota('ram', 0)
         self.assertRaises((lib_exc.Forbidden, lib_exc.OverLimit),
                           self.create_test_server)
 
@@ -90,16 +81,7 @@
     @test.idempotent_id('7c6be468-0274-449a-81c3-ac1c32ee0161')
     def test_create_server_when_instances_quota_is_full(self):
         # Once instances quota limit is reached, disallow server creation
-        quota_set = (self.adm_client.show_quota_set(self.demo_tenant_id)
-                     ['quota_set'])
-        default_instances_quota = quota_set['instances']
-        instances_quota = 0  # Set quota to zero to disallow server creation
-
-        self.adm_client.update_quota_set(self.demo_tenant_id,
-                                         force=True,
-                                         instances=instances_quota)
-        self.addCleanup(self.adm_client.update_quota_set, self.demo_tenant_id,
-                        instances=default_instances_quota)
+        self._update_quota('instances', 0)
         self.assertRaises((lib_exc.Forbidden, lib_exc.OverLimit),
                           self.create_test_server)
 
@@ -109,22 +91,10 @@
     @test.services('network')
     def test_security_groups_exceed_limit(self):
         # Negative test: Creation Security Groups over limit should FAIL
-
-        quota_set = (self.adm_client.show_quota_set(self.demo_tenant_id)
-                     ['quota_set'])
-        default_sg_quota = quota_set['security_groups']
-
         # Set the quota to number of used security groups
         sg_quota = self.limits_client.show_limits()['limits']['absolute'][
             'totalSecurityGroupsUsed']
-
-        self.adm_client.update_quota_set(self.demo_tenant_id,
-                                         force=True,
-                                         security_groups=sg_quota)
-
-        self.addCleanup(self.adm_client.update_quota_set,
-                        self.demo_tenant_id,
-                        security_groups=default_sg_quota)
+        self._update_quota('security_groups', sg_quota)
 
         # Check we cannot create anymore
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
@@ -141,19 +111,7 @@
     def test_security_groups_rules_exceed_limit(self):
         # Negative test: Creation of Security Group Rules should FAIL
         # when we reach limit maxSecurityGroupRules
-
-        quota_set = (self.adm_client.show_quota_set(self.demo_tenant_id)
-                     ['quota_set'])
-        default_sg_rules_quota = quota_set['security_group_rules']
-        sg_rules_quota = 0  # Set the quota to zero to conserve resources
-
-        self.adm_client.update_quota_set(self.demo_tenant_id,
-                                         force=True,
-                                         security_group_rules=sg_rules_quota)
-
-        self.addCleanup(self.adm_client.update_quota_set,
-                        self.demo_tenant_id,
-                        security_group_rules=default_sg_rules_quota)
+        self._update_quota('security_group_rules', 0)
 
         s_name = data_utils.rand_name('securitygroup')
         s_description = data_utils.rand_name('description')
diff --git a/tempest/api/compute/images/test_images.py b/tempest/api/compute/images/test_images.py
index 154d717..a06f4a7 100644
--- a/tempest/api/compute/images/test_images.py
+++ b/tempest/api/compute/images/test_images.py
@@ -38,7 +38,6 @@
     def setup_clients(cls):
         super(ImagesTestJSON, cls).setup_clients()
         cls.client = cls.compute_images_client
-        cls.servers_client = cls.servers_client
 
     @test.idempotent_id('aa06b52b-2db5-4807-b218-9441f75d74e3')
     def test_delete_saving_image(self):
diff --git a/tempest/api/compute/images/test_images_negative.py b/tempest/api/compute/images/test_images_negative.py
index 8db094d..7035401 100644
--- a/tempest/api/compute/images/test_images_negative.py
+++ b/tempest/api/compute/images/test_images_negative.py
@@ -39,7 +39,6 @@
     def setup_clients(cls):
         super(ImagesNegativeTestJSON, cls).setup_clients()
         cls.client = cls.compute_images_client
-        cls.servers_client = cls.servers_client
 
     @test.attr(type=['negative'])
     @test.idempotent_id('6cd5a89d-5b47-46a7-93bc-3916f0d84973')
diff --git a/tempest/api/compute/servers/test_server_metadata.py b/tempest/api/compute/servers/test_server_metadata.py
index cb66e81..847b7a1 100644
--- a/tempest/api/compute/servers/test_server_metadata.py
+++ b/tempest/api/compute/servers/test_server_metadata.py
@@ -23,7 +23,6 @@
     def setup_clients(cls):
         super(ServerMetadataTestJSON, cls).setup_clients()
         cls.client = cls.servers_client
-        cls.quotas = cls.quotas_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/compute/servers/test_server_metadata_negative.py b/tempest/api/compute/servers/test_server_metadata_negative.py
index aae9101..62b8962 100644
--- a/tempest/api/compute/servers/test_server_metadata_negative.py
+++ b/tempest/api/compute/servers/test_server_metadata_negative.py
@@ -25,7 +25,6 @@
     def setup_clients(cls):
         super(ServerMetadataNegativeTestJSON, cls).setup_clients()
         cls.client = cls.servers_client
-        cls.quotas = cls.quotas_client
 
     @classmethod
     def resource_setup(cls):
@@ -134,7 +133,8 @@
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised while exceeding metadata items limit for
         # tenant.
-        quota_set = self.quotas.show_quota_set(self.tenant_id)['quota_set']
+        quota_set = self.quotas_client.show_quota_set(
+            self.tenant_id)['quota_set']
         quota_metadata = quota_set['metadata_items']
         if quota_metadata == -1:
             raise self.skipException("No limit for metadata_items")
diff --git a/tempest/api/volume/admin/test_volume_types.py b/tempest/api/volume/admin/test_volume_types.py
index eb6500c..3098cab 100644
--- a/tempest/api/volume/admin/test_volume_types.py
+++ b/tempest/api/volume/admin/test_volume_types.py
@@ -51,8 +51,7 @@
                   'size': CONF.volume.volume_size}
 
         # Create volume
-        volume = self.volumes_client.create_volume(**params)['volume']
-        self.addCleanup(self.delete_volume, self.volumes_client, volume['id'])
+        volume = self.create_volume(**params)
         self.assertEqual(volume_types[0]['name'], volume["volume_type"])
         self.assertEqual(volume[self.name_field], vol_name,
                          "The created volume name is not equal "
diff --git a/tempest/api/volume/admin/v2/test_volume_type_access.py b/tempest/api/volume/admin/v2/test_volume_type_access.py
index 91ff5af..80dbf12 100644
--- a/tempest/api/volume/admin/v2/test_volume_type_access.py
+++ b/tempest/api/volume/admin/v2/test_volume_type_access.py
@@ -16,7 +16,6 @@
 import operator
 
 from tempest.api.volume import base
-from tempest.common import waiters
 from tempest import config
 from tempest.lib import exceptions as lib_exc
 from tempest import test
@@ -52,13 +51,7 @@
                         project=self.volumes_client.tenant_id)
 
         # Creating a volume from primary tenant
-        volume = self.volumes_client.create_volume(
-            volume_type=volume_type['id'],
-            size=CONF.volume.volume_size)['volume']
-        self.addCleanup(self.delete_volume, self.volumes_client, volume['id'])
-        waiters.wait_for_volume_status(self.volumes_client, volume['id'],
-                                       'available')
-
+        volume = self.create_volume(volume_type=volume_type['id'])
         # Validating the created volume is based on the volume type
         self.assertEqual(volume_type['name'], volume['volume_type'])
 
diff --git a/tempest/api/volume/admin/v3/test_user_messages.py b/tempest/api/volume/admin/v3/test_user_messages.py
index 39a5dfa..257a434 100755
--- a/tempest/api/volume/admin/v3/test_user_messages.py
+++ b/tempest/api/volume/admin/v3/test_user_messages.py
@@ -15,9 +15,7 @@
 
 from tempest.api.volume.v3 import base
 from tempest.common.utils import data_utils
-from tempest.common import waiters
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -47,21 +45,11 @@
                        'vendor_name': bad_vendor}
         vol_type_name = data_utils.rand_name(
             self.__class__.__name__ + '-volume-type')
-        bogus_type = self.admin_volume_types_client.create_volume_type(
-            name=vol_type_name,
-            extra_specs=extra_specs)['volume_type']
-        self.addCleanup(self.admin_volume_types_client.delete_volume_type,
-                        bogus_type['id'])
+        bogus_type = self.create_volume_type(
+            name=vol_type_name, extra_specs=extra_specs)
         params = {'volume_type': bogus_type['id'],
                   'size': CONF.volume.volume_size}
-        volume = self.volumes_client.create_volume(**params)['volume']
-        self.addCleanup(self.delete_volume, self.volumes_client, volume['id'])
-        try:
-            waiters.wait_for_volume_status(self.volumes_client, volume['id'],
-                                           'error')
-        except exceptions.VolumeBuildErrorException:
-            # Error state is expected and desired
-            pass
+        volume = self.create_volume(wait_until="error", **params)
         messages = self.messages_client.list_messages()['messages']
         message_id = None
         for message in messages:
diff --git a/tempest/api/volume/base.py b/tempest/api/volume/base.py
index b9aeb99..6db3807 100644
--- a/tempest/api/volume/base.py
+++ b/tempest/api/volume/base.py
@@ -108,8 +108,11 @@
         super(BaseVolumeTest, cls).resource_cleanup()
 
     @classmethod
-    def create_volume(cls, **kwargs):
-        """Wrapper utility that returns a test volume."""
+    def create_volume(cls, wait_until='available', **kwargs):
+        """Wrapper utility that returns a test volume.
+
+           :param wait_until: wait till volume status.
+        """
         if 'size' not in kwargs:
             kwargs['size'] = CONF.volume.volume_size
 
@@ -120,8 +123,8 @@
 
         volume = cls.volumes_client.create_volume(**kwargs)['volume']
         cls.volumes.append(volume)
-        waiters.wait_for_volume_status(cls.volumes_client,
-                                       volume['id'], 'available')
+        waiters.wait_for_volume_status(cls.volumes_client, volume['id'],
+                                       wait_until)
         return volume
 
     @classmethod
diff --git a/tempest/api/volume/v3/base.py b/tempest/api/volume/v3/base.py
index e38f947..31fc1eb 100644
--- a/tempest/api/volume/v3/base.py
+++ b/tempest/api/volume/v3/base.py
@@ -52,7 +52,8 @@
             self.request_microversion))
 
 
-class VolumesV3AdminTest(VolumesV3Test):
+class VolumesV3AdminTest(VolumesV3Test,
+                         base.BaseVolumeAdminTest):
     """Base test case class for all v3 Volume Admin API tests."""
 
     credentials = ['primary', 'admin']
diff --git a/tempest/common/waiters.py b/tempest/common/waiters.py
index 92bce5f..0cf8154 100644
--- a/tempest/common/waiters.py
+++ b/tempest/common/waiters.py
@@ -176,7 +176,7 @@
         time.sleep(client.build_interval)
         body = client.show_volume(volume_id)['volume']
         volume_status = body['status']
-        if volume_status == 'error':
+        if volume_status == 'error' and status != 'error':
             raise exceptions.VolumeBuildErrorException(volume_id=volume_id)
         if volume_status == 'error_restoring':
             raise exceptions.VolumeRestoreErrorException(volume_id=volume_id)
diff --git a/tempest/lib/services/compute/tenant_usages_client.py b/tempest/lib/services/compute/tenant_usages_client.py
index 5a748c7..d0eb1c9 100644
--- a/tempest/lib/services/compute/tenant_usages_client.py
+++ b/tempest/lib/services/compute/tenant_usages_client.py
@@ -24,6 +24,12 @@
 class TenantUsagesClient(base_compute_client.BaseComputeClient):
 
     def list_tenant_usages(self, **params):
+        """List Tenant Usage For All Tenants.
+
+        For a full list of available parameters, please refer to the official
+        API reference:
+        http://developer.openstack.org/api-ref/compute/#list-tenant-usage-for-all-tenants
+        """
         url = 'os-simple-tenant-usage'
         if params:
             url += '?%s' % urllib.urlencode(params)
@@ -34,6 +40,12 @@
         return rest_client.ResponseBody(resp, body)
 
     def show_tenant_usage(self, tenant_id, **params):
+        """Show Usage Details For Tenant.
+
+        For a full list of available parameters, please refer to the official
+        API reference:
+        http://developer.openstack.org/api-ref/compute/#show-usage-details-for-tenant
+        """
         url = 'os-simple-tenant-usage/%s' % tenant_id
         if params:
             url += '?%s' % urllib.urlencode(params)
diff --git a/tempest/tests/common/test_custom_matchers.py b/tempest/tests/common/test_custom_matchers.py
index 07867fc..1053d86 100644
--- a/tempest/tests/common/test_custom_matchers.py
+++ b/tempest/tests/common/test_custom_matchers.py
@@ -25,11 +25,11 @@
         matches = self.matches_matches
         mismatches = self.matches_mismatches
         for candidate in matches:
-            self.assertEqual(None, matcher.match(candidate))
+            self.assertIsNone(matcher.match(candidate))
         for candidate in mismatches:
             mismatch = matcher.match(candidate)
-            self.assertNotEqual(None, mismatch)
-            self.assertNotEqual(None, getattr(mismatch, 'describe', None))
+            self.assertIsNotNone(mismatch)
+            self.assertIsNotNone(getattr(mismatch, 'describe', None))
 
     def test__str__(self):
         # [(expected, object to __str__)].