diff --git a/etc/tempest.conf.sample b/etc/tempest.conf.sample
index 949302f..0eeb738 100644
--- a/etc/tempest.conf.sample
+++ b/etc/tempest.conf.sample
@@ -439,6 +439,9 @@
 # running instances? (boolean value)
 #snapshot = true
 
+# Does the test environment have the ec2 api running? (boolean value)
+#ec2_api = true
+
 
 [dashboard]
 
diff --git a/tempest/api/baremetal/admin/test_ports.py b/tempest/api/baremetal/admin/test_ports.py
index 4aedaa4..89447e0 100644
--- a/tempest/api/baremetal/admin/test_ports.py
+++ b/tempest/api/baremetal/admin/test_ports.py
@@ -10,6 +10,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.baremetal.admin import base
 from tempest.common.utils import data_utils
 from tempest import exceptions as exc
@@ -57,7 +59,7 @@
         _, body = self.client.show_port(uuid)
         self._assertExpected(port, body)
 
-    @test.skip_because(bug='1398350')
+    @decorators.skip_because(bug='1398350')
     @test.attr(type='smoke')
     def test_create_port_with_extra(self):
         node_id = self.node['uuid']
@@ -231,7 +233,7 @@
         _, body = self.client.show_port(port['uuid'])
         self.assertEqual(extra, body['extra'])
 
-    @test.skip_because(bug='1398350')
+    @decorators.skip_because(bug='1398350')
     @test.attr(type='smoke')
     def test_update_port_mixed_ops(self):
         node_id = self.node['uuid']
diff --git a/tempest/api/compute/admin/test_flavors.py b/tempest/api/compute/admin/test_flavors.py
index 1953040..360bcf7 100644
--- a/tempest/api/compute/admin/test_flavors.py
+++ b/tempest/api/compute/admin/test_flavors.py
@@ -45,8 +45,7 @@
         cls.rxtx = 2
 
     def flavor_clean_up(self, flavor_id):
-        resp, body = self.client.delete_flavor(flavor_id)
-        self.assertEqual(resp.status, 202)
+        self.client.delete_flavor(flavor_id)
         self.client.wait_for_resource_deletion(flavor_id)
 
     def _create_flavor(self, flavor_id):
@@ -55,15 +54,14 @@
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
 
         # Create the flavor
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 flavor_id,
-                                                 ephemeral=self.ephemeral,
-                                                 swap=self.swap,
-                                                 rxtx=self.rxtx)
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           flavor_id,
+                                           ephemeral=self.ephemeral,
+                                           swap=self.swap,
+                                           rxtx=self.rxtx)
         self.addCleanup(self.flavor_clean_up, flavor['id'])
-        self.assertEqual(200, resp.status)
         self.assertEqual(flavor['name'], flavor_name)
         self.assertEqual(flavor['vcpus'], self.vcpus)
         self.assertEqual(flavor['disk'], self.disk)
@@ -75,8 +73,7 @@
         self.assertEqual(flavor['os-flavor-access:is_public'], True)
 
         # Verify flavor is retrieved
-        resp, flavor = self.client.get_flavor_details(flavor['id'])
-        self.assertEqual(resp.status, 200)
+        flavor = self.client.get_flavor_details(flavor['id'])
         self.assertEqual(flavor['name'], flavor_name)
 
         return flavor['id']
@@ -109,18 +106,17 @@
         new_flavor_id = data_utils.rand_int_id(start=1000)
 
         # Create the flavor
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 new_flavor_id,
-                                                 ephemeral=self.ephemeral,
-                                                 swap=self.swap,
-                                                 rxtx=self.rxtx)
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           new_flavor_id,
+                                           ephemeral=self.ephemeral,
+                                           swap=self.swap,
+                                           rxtx=self.rxtx)
         self.addCleanup(self.flavor_clean_up, flavor['id'])
         flag = False
         # Verify flavor is retrieved
-        resp, flavors = self.client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.client.list_flavors_with_detail()
         for flavor in flavors:
             if flavor['name'] == flavor_name:
                 flag = True
@@ -142,12 +138,11 @@
         new_flavor_id = data_utils.rand_int_id(start=1000)
 
         # Create the flavor
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 new_flavor_id)
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           new_flavor_id)
         self.addCleanup(self.flavor_clean_up, flavor['id'])
-        self.assertEqual(200, resp.status)
         self.assertEqual(flavor['name'], flavor_name)
         self.assertEqual(flavor['ram'], self.ram)
         self.assertEqual(flavor['vcpus'], self.vcpus)
@@ -156,14 +151,12 @@
         verify_flavor_response_extension(flavor)
 
         # Verify flavor is retrieved
-        resp, flavor = self.client.get_flavor_details(new_flavor_id)
-        self.assertEqual(resp.status, 200)
+        flavor = self.client.get_flavor_details(new_flavor_id)
         self.assertEqual(flavor['name'], flavor_name)
         verify_flavor_response_extension(flavor)
 
         # Check if flavor is present in list
-        resp, flavors = self.user_client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.user_client.list_flavors_with_detail()
         for flavor in flavors:
             if flavor['name'] == flavor_name:
                 verify_flavor_response_extension(flavor)
@@ -180,16 +173,15 @@
         new_flavor_id = data_utils.rand_int_id(start=1000)
 
         # Create the flavor
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 new_flavor_id,
-                                                 is_public="False")
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           new_flavor_id,
+                                           is_public="False")
         self.addCleanup(self.flavor_clean_up, flavor['id'])
         # Verify flavor is retrieved
         flag = False
-        resp, flavors = self.client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.client.list_flavors_with_detail()
         for flavor in flavors:
             if flavor['name'] == flavor_name:
                 flag = True
@@ -197,8 +189,7 @@
 
         # Verify flavor is not retrieved with other user
         flag = False
-        resp, flavors = self.user_client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.user_client.list_flavors_with_detail()
         for flavor in flavors:
             if flavor['name'] == flavor_name:
                 flag = True
@@ -211,13 +202,12 @@
         new_flavor_id = data_utils.rand_int_id(start=1000)
 
         # Create the flavor
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 new_flavor_id,
-                                                 is_public="False")
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           new_flavor_id,
+                                           is_public="False")
         self.addCleanup(self.flavor_clean_up, flavor['id'])
-        self.assertEqual(200, resp.status)
 
         # Verify flavor is not used by other user
         self.assertRaises(exceptions.BadRequest,
@@ -232,17 +222,16 @@
         new_flavor_id = data_utils.rand_int_id(start=1000)
 
         # Create the flavor
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 new_flavor_id,
-                                                 is_public="True")
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           new_flavor_id,
+                                           is_public="True")
         self.addCleanup(self.flavor_clean_up, flavor['id'])
         flag = False
         self.new_client = self.flavors_client
         # Verify flavor is retrieved with new user
-        resp, flavors = self.new_client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.new_client.list_flavors_with_detail()
         for flavor in flavors:
             if flavor['name'] == flavor_name:
                 flag = True
@@ -256,19 +245,19 @@
         flavor_name_public = data_utils.rand_name(self.flavor_name_prefix)
 
         # Create a non public flavor
-        resp, flavor = self.client.create_flavor(flavor_name_not_public,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 flavor_id_not_public,
-                                                 is_public="False")
+        flavor = self.client.create_flavor(flavor_name_not_public,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           flavor_id_not_public,
+                                           is_public="False")
         self.addCleanup(self.flavor_clean_up, flavor['id'])
 
         # Create a public flavor
-        resp, flavor = self.client.create_flavor(flavor_name_public,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 flavor_id_public,
-                                                 is_public="True")
+        flavor = self.client.create_flavor(flavor_name_public,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           flavor_id_public,
+                                           is_public="True")
         self.addCleanup(self.flavor_clean_up, flavor['id'])
 
         def _flavor_lookup(flavors, flavor_name):
@@ -280,8 +269,7 @@
         def _test_string_variations(variations, flavor_name):
             for string in variations:
                 params = {'is_public': string}
-                r, flavors = self.client.list_flavors_with_detail(params)
-                self.assertEqual(r.status, 200)
+                flavors = self.client.list_flavors_with_detail(params)
                 flavor = _flavor_lookup(flavors, flavor_name)
                 self.assertIsNotNone(flavor)
 
@@ -297,12 +285,11 @@
         new_flavor_id = data_utils.rand_int_id(start=1000)
 
         ram = "1024"
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 ram, self.vcpus,
-                                                 self.disk,
-                                                 new_flavor_id)
+        flavor = self.client.create_flavor(flavor_name,
+                                           ram, self.vcpus,
+                                           self.disk,
+                                           new_flavor_id)
         self.addCleanup(self.flavor_clean_up, flavor['id'])
-        self.assertEqual(200, resp.status)
         self.assertEqual(flavor['name'], flavor_name)
         self.assertEqual(flavor['vcpus'], self.vcpus)
         self.assertEqual(flavor['disk'], self.disk)
diff --git a/tempest/api/compute/admin/test_flavors_access.py b/tempest/api/compute/admin/test_flavors_access.py
index 19707d0..8a33ce7 100644
--- a/tempest/api/compute/admin/test_flavors_access.py
+++ b/tempest/api/compute/admin/test_flavors_access.py
@@ -49,15 +49,13 @@
         # private flavor will return an empty access list
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='False')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
-        self.assertEqual(resp.status, 200)
-        resp, flavor_access = self.client.list_flavor_access(new_flavor_id)
-        self.assertEqual(resp.status, 200)
+        flavor_access = self.client.list_flavor_access(new_flavor_id)
         self.assertEqual(len(flavor_access), 0, str(flavor_access))
 
     @test.attr(type='gate')
@@ -65,34 +63,30 @@
         # Test to add and remove flavor access to a given tenant.
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='False')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
         # Add flavor access to a tenant.
         resp_body = {
             "tenant_id": str(self.tenant_id),
             "flavor_id": str(new_flavor['id']),
         }
-        add_resp, add_body = \
+        add_body = \
             self.client.add_flavor_access(new_flavor['id'], self.tenant_id)
-        self.assertEqual(add_resp.status, 200)
         self.assertIn(resp_body, add_body)
 
         # The flavor is present in list.
-        resp, flavors = self.flavors_client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.flavors_client.list_flavors_with_detail()
         self.assertIn(new_flavor['id'], map(lambda x: x['id'], flavors))
 
         # Remove flavor access from a tenant.
-        remove_resp, remove_body = \
+        remove_body = \
             self.client.remove_flavor_access(new_flavor['id'], self.tenant_id)
-        self.assertEqual(remove_resp.status, 200)
         self.assertNotIn(resp_body, remove_body)
 
         # The flavor is not present in list.
-        resp, flavors = self.flavors_client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.flavors_client.list_flavors_with_detail()
         self.assertNotIn(new_flavor['id'], map(lambda x: x['id'], flavors))
diff --git a/tempest/api/compute/admin/test_flavors_access_negative.py b/tempest/api/compute/admin/test_flavors_access_negative.py
index c49652d..4ba9eb2 100644
--- a/tempest/api/compute/admin/test_flavors_access_negative.py
+++ b/tempest/api/compute/admin/test_flavors_access_negative.py
@@ -47,13 +47,12 @@
         # Test to list flavor access with exceptions by querying public flavor
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='True')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='True')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
-        self.assertEqual(resp.status, 200)
         self.assertRaises(exceptions.NotFound,
                           self.client.list_flavor_access,
                           new_flavor_id)
@@ -63,11 +62,11 @@
         # Test to add flavor access as a user without admin privileges.
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='False')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
         self.assertRaises(exceptions.Unauthorized,
                           self.flavors_client.add_flavor_access,
@@ -79,11 +78,11 @@
         # Test to remove flavor access as a user without admin privileges.
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='False')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
         # Add flavor access to a tenant.
         self.client.add_flavor_access(new_flavor['id'], self.tenant_id)
@@ -99,11 +98,11 @@
         # Create a new flavor.
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='False')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
 
         # Add flavor access to a tenant.
@@ -123,11 +122,11 @@
         # Create a new flavor.
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='False')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
 
         # An exception should be raised when flavor access is not found
diff --git a/tempest/api/compute/admin/test_flavors_extra_specs.py b/tempest/api/compute/admin/test_flavors_extra_specs.py
index 5157d2e..55c3358 100644
--- a/tempest/api/compute/admin/test_flavors_extra_specs.py
+++ b/tempest/api/compute/admin/test_flavors_extra_specs.py
@@ -43,16 +43,16 @@
         swap = 1024
         rxtx = 1
         # Create a flavor so as to set/get/unset extra specs
-        resp, cls.flavor = cls.client.create_flavor(flavor_name,
-                                                    ram, vcpus,
-                                                    disk,
-                                                    cls.new_flavor_id,
-                                                    ephemeral=ephemeral,
-                                                    swap=swap, rxtx=rxtx)
+        cls.flavor = cls.client.create_flavor(flavor_name,
+                                              ram, vcpus,
+                                              disk,
+                                              cls.new_flavor_id,
+                                              ephemeral=ephemeral,
+                                              swap=swap, rxtx=rxtx)
 
     @classmethod
     def resource_cleanup(cls):
-        resp, body = cls.client.delete_flavor(cls.flavor['id'])
+        cls.client.delete_flavor(cls.flavor['id'])
         cls.client.wait_for_resource_deletion(cls.flavor['id'])
         super(FlavorsExtraSpecsTestJSON, cls).resource_cleanup()
 
@@ -63,47 +63,34 @@
         # Assigning extra specs values that are to be set
         specs = {"key1": "value1", "key2": "value2"}
         # SET extra specs to the flavor created in setUp
-        set_resp, set_body = \
+        set_body = \
             self.client.set_flavor_extra_spec(self.flavor['id'], specs)
-        self.assertEqual(set_resp.status, 200)
         self.assertEqual(set_body, specs)
         # GET extra specs and verify
-        get_resp, get_body = \
-            self.client.get_flavor_extra_spec(self.flavor['id'])
-        self.assertEqual(get_resp.status, 200)
+        get_body = self.client.get_flavor_extra_spec(self.flavor['id'])
         self.assertEqual(get_body, specs)
 
         # UPDATE the value of the extra specs key1
-        update_resp, update_body = \
+        update_body = \
             self.client.update_flavor_extra_spec(self.flavor['id'],
                                                  "key1",
                                                  key1="value")
-        self.assertEqual(update_resp.status, 200)
         self.assertEqual({"key1": "value"}, update_body)
 
         # GET extra specs and verify the value of the key2
         # is the same as before
-        get_resp, get_body = \
-            self.client.get_flavor_extra_spec(self.flavor['id'])
-        self.assertEqual(get_resp.status, 200)
+        get_body = self.client.get_flavor_extra_spec(self.flavor['id'])
         self.assertEqual(get_body, {"key1": "value", "key2": "value2"})
 
         # UNSET extra specs that were set in this test
-        unset_resp, _ = \
-            self.client.unset_flavor_extra_spec(self.flavor['id'], "key1")
-        self.assertEqual(unset_resp.status, 200)
-        unset_resp, _ = \
-            self.client.unset_flavor_extra_spec(self.flavor['id'], "key2")
-        self.assertEqual(unset_resp.status, 200)
+        self.client.unset_flavor_extra_spec(self.flavor['id'], "key1")
+        self.client.unset_flavor_extra_spec(self.flavor['id'], "key2")
 
     @test.attr(type='gate')
     def test_flavor_non_admin_get_all_keys(self):
         specs = {"key1": "value1", "key2": "value2"}
-        set_resp, set_body = self.client.set_flavor_extra_spec(
-            self.flavor['id'], specs)
-        resp, body = self.flavors_client.get_flavor_extra_spec(
-            self.flavor['id'])
-        self.assertEqual(resp.status, 200)
+        self.client.set_flavor_extra_spec(self.flavor['id'], specs)
+        body = self.flavors_client.get_flavor_extra_spec(self.flavor['id'])
 
         for key in specs:
             self.assertEqual(body[key], specs[key])
@@ -111,13 +98,10 @@
     @test.attr(type='gate')
     def test_flavor_non_admin_get_specific_key(self):
         specs = {"key1": "value1", "key2": "value2"}
-        resp, body = self.client.set_flavor_extra_spec(
-            self.flavor['id'], specs)
-        self.assertEqual(resp.status, 200)
+        body = self.client.set_flavor_extra_spec(self.flavor['id'], specs)
         self.assertEqual(body['key1'], 'value1')
         self.assertIn('key2', body)
-        resp, body = self.flavors_client.get_flavor_extra_spec_with_key(
+        body = self.flavors_client.get_flavor_extra_spec_with_key(
             self.flavor['id'], 'key1')
-        self.assertEqual(resp.status, 200)
         self.assertEqual(body['key1'], 'value1')
         self.assertNotIn('key2', body)
diff --git a/tempest/api/compute/admin/test_flavors_extra_specs_negative.py b/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
index 20860c8..2663e25 100644
--- a/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
+++ b/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
@@ -44,16 +44,16 @@
         swap = 1024
         rxtx = 1
         # Create a flavor
-        resp, cls.flavor = cls.client.create_flavor(flavor_name,
-                                                    ram, vcpus,
-                                                    disk,
-                                                    cls.new_flavor_id,
-                                                    ephemeral=ephemeral,
-                                                    swap=swap, rxtx=rxtx)
+        cls.flavor = cls.client.create_flavor(flavor_name,
+                                              ram, vcpus,
+                                              disk,
+                                              cls.new_flavor_id,
+                                              ephemeral=ephemeral,
+                                              swap=swap, rxtx=rxtx)
 
     @classmethod
     def resource_cleanup(cls):
-        resp, body = cls.client.delete_flavor(cls.flavor['id'])
+        cls.client.delete_flavor(cls.flavor['id'])
         cls.client.wait_for_resource_deletion(cls.flavor['id'])
         super(FlavorsExtraSpecsNegativeTestJSON, cls).resource_cleanup()
 
@@ -70,9 +70,8 @@
     def test_flavor_non_admin_update_specific_key(self):
         # non admin user is not allowed to update flavor extra spec
         specs = {"key1": "value1", "key2": "value2"}
-        resp, body = self.client.set_flavor_extra_spec(
+        body = self.client.set_flavor_extra_spec(
             self.flavor['id'], specs)
-        self.assertEqual(resp.status, 200)
         self.assertEqual(body['key1'], 'value1')
         self.assertRaises(exceptions.Unauthorized,
                           self.flavors_client.
@@ -84,8 +83,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_flavor_non_admin_unset_keys(self):
         specs = {"key1": "value1", "key2": "value2"}
-        set_resp, set_body = self.client.set_flavor_extra_spec(
-            self.flavor['id'], specs)
+        self.client.set_flavor_extra_spec(self.flavor['id'], specs)
 
         self.assertRaises(exceptions.Unauthorized,
                           self.flavors_client.unset_flavor_extra_spec,
diff --git a/tempest/api/compute/admin/test_flavors_negative.py b/tempest/api/compute/admin/test_flavors_negative.py
index fb27360..86125fb 100644
--- a/tempest/api/compute/admin/test_flavors_negative.py
+++ b/tempest/api/compute/admin/test_flavors_negative.py
@@ -59,27 +59,23 @@
 
         # no need to specify flavor_id, we can get the flavor_id from a
         # response of create_flavor() call.
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram,
-                                                 self.vcpus, self.disk,
-                                                 None,
-                                                 ephemeral=self.ephemeral,
-                                                 swap=self.swap,
-                                                 rxtx=self.rxtx)
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram,
+                                           self.vcpus, self.disk,
+                                           None,
+                                           ephemeral=self.ephemeral,
+                                           swap=self.swap,
+                                           rxtx=self.rxtx)
         # Delete the flavor
         new_flavor_id = flavor['id']
-        resp_delete, body = self.client.delete_flavor(new_flavor_id)
-        self.assertEqual(200, resp.status)
-        self.assertEqual(202, resp_delete.status)
+        self.client.delete_flavor(new_flavor_id)
 
         # Deleted flavors can be seen via detailed GET
-        resp, flavor = self.client.get_flavor_details(new_flavor_id)
-        self.assertEqual(resp.status, 200)
+        flavor = self.client.get_flavor_details(new_flavor_id)
         self.assertEqual(flavor['name'], flavor_name)
 
         # Deleted flavors should not show up in a list however
-        resp, flavors = self.client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.client.list_flavors_with_detail()
         flag = True
         for flavor in flavors:
             if flavor['name'] == flavor_name:
diff --git a/tempest/api/compute/admin/test_quotas.py b/tempest/api/compute/admin/test_quotas.py
index fc70fdb..b0fcf94 100644
--- a/tempest/api/compute/admin/test_quotas.py
+++ b/tempest/api/compute/admin/test_quotas.py
@@ -54,9 +54,8 @@
     def test_get_default_quotas(self):
         # Admin can get the default resource quota set for a tenant
         expected_quota_set = self.default_quota_set | set(['id'])
-        resp, quota_set = self.adm_client.get_default_quota_set(
+        quota_set = self.adm_client.get_default_quota_set(
             self.demo_tenant_id)
-        self.assertEqual(200, resp.status)
         self.assertEqual(quota_set['id'], self.demo_tenant_id)
         for quota in expected_quota_set:
             self.assertIn(quota, quota_set.keys())
@@ -64,7 +63,7 @@
     @test.attr(type='gate')
     def test_update_all_quota_resources_for_tenant(self):
         # Admin can update all the resource quota limits for a tenant
-        resp, default_quota_set = self.adm_client.get_default_quota_set(
+        default_quota_set = self.adm_client.get_default_quota_set(
             self.demo_tenant_id)
         new_quota_set = {'injected_file_content_bytes': 20480,
                          'metadata_items': 256, 'injected_files': 10,
@@ -73,7 +72,7 @@
                          'instances': 20, 'security_group_rules': 20,
                          'cores': 2, 'security_groups': 20}
         # Update limits for all quota resources
-        resp, quota_set = self.adm_client.update_quota_set(
+        quota_set = self.adm_client.update_quota_set(
             self.demo_tenant_id,
             force=True,
             **new_quota_set)
@@ -88,7 +87,6 @@
             default_quota_set.pop('server_group_members')
         self.addCleanup(self.adm_client.update_quota_set,
                         self.demo_tenant_id, **default_quota_set)
-        self.assertEqual(200, resp.status)
         for quota in new_quota_set:
             self.assertIn(quota, quota_set.keys())
 
@@ -105,8 +103,7 @@
         self.addCleanup(identity_client.delete_tenant, tenant_id)
 
         self.adm_client.update_quota_set(tenant_id, ram='5120')
-        resp, quota_set = self.adm_client.get_quota_set(tenant_id)
-        self.assertEqual(200, resp.status)
+        quota_set = self.adm_client.get_quota_set(tenant_id)
         self.assertEqual(5120, quota_set['ram'])
 
         # Verify that GET shows the updated quota set of user
@@ -123,9 +120,8 @@
         self.adm_client.update_quota_set(tenant_id,
                                          user_id=user_id,
                                          ram='2048')
-        resp, quota_set = self.adm_client.get_quota_set(tenant_id,
-                                                        user_id=user_id)
-        self.assertEqual(200, resp.status)
+        quota_set = self.adm_client.get_quota_set(tenant_id,
+                                                  user_id=user_id)
         self.assertEqual(2048, quota_set['ram'])
 
     @test.attr(type='gate')
@@ -138,17 +134,14 @@
                                                description=tenant_desc)
         tenant_id = tenant['id']
         self.addCleanup(identity_client.delete_tenant, tenant_id)
-        resp, quota_set_default = self.adm_client.get_quota_set(tenant_id)
+        quota_set_default = self.adm_client.get_quota_set(tenant_id)
         ram_default = quota_set_default['ram']
 
-        resp, body = self.adm_client.update_quota_set(tenant_id, ram='5120')
-        self.assertEqual(200, resp.status)
+        self.adm_client.update_quota_set(tenant_id, ram='5120')
 
-        resp, body = self.adm_client.delete_quota_set(tenant_id)
-        self.assertEqual(202, resp.status)
+        self.adm_client.delete_quota_set(tenant_id)
 
-        resp, quota_set_new = self.adm_client.get_quota_set(tenant_id)
-        self.assertEqual(200, resp.status)
+        quota_set_new = self.adm_client.get_quota_set(tenant_id)
         self.assertEqual(ram_default, quota_set_new['ram'])
 
 
@@ -169,9 +162,8 @@
 
     def _restore_default_quotas(self, original_defaults):
         LOG.debug("restoring quota class defaults")
-        resp, body = self.adm_client.update_quota_class_set(
+        self.adm_client.update_quota_class_set(
             'default', **original_defaults)
-        self.assertEqual(200, resp.status)
 
     # NOTE(sdague): this test is problematic as it changes
     # global state, and possibly needs to be part of a set of
@@ -179,8 +171,7 @@
     # 'danger' flag.
     def test_update_default_quotas(self):
         LOG.debug("get the current 'default' quota class values")
-        resp, body = self.adm_client.get_quota_class_set('default')
-        self.assertEqual(200, resp.status)
+        body = self.adm_client.get_quota_class_set('default')
         self.assertIn('id', body)
         self.assertEqual('default', body.pop('id'))
         # restore the defaults when the test is done
@@ -192,9 +183,8 @@
             # to a very small number which causes issues.
             body[quota] = default + 100
         LOG.debug("update limits for the default quota class set")
-        resp, update_body = self.adm_client.update_quota_class_set('default',
-                                                                   **body)
-        self.assertEqual(200, resp.status)
+        update_body = self.adm_client.update_quota_class_set('default',
+                                                             **body)
         LOG.debug("assert that the response has all of the changed values")
         self.assertThat(update_body.items(),
                         matchers.ContainsAll(body.items()))
diff --git a/tempest/api/compute/admin/test_quotas_negative.py b/tempest/api/compute/admin/test_quotas_negative.py
index 532f195..7cefe90 100644
--- a/tempest/api/compute/admin/test_quotas_negative.py
+++ b/tempest/api/compute/admin/test_quotas_negative.py
@@ -12,6 +12,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
@@ -47,13 +49,13 @@
     @test.attr(type=['negative', 'gate'])
     def test_create_server_when_cpu_quota_is_full(self):
         # Disallow server creation when tenant's vcpu quota is full
-        resp, quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
+        quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
         default_vcpu_quota = quota_set['cores']
         vcpu_quota = 0  # Set the quota to zero to conserve resources
 
-        resp, quota_set = self.adm_client.update_quota_set(self.demo_tenant_id,
-                                                           force=True,
-                                                           cores=vcpu_quota)
+        quota_set = 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)
@@ -63,7 +65,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_create_server_when_memory_quota_is_full(self):
         # Disallow server creation when tenant's memory quota is full
-        resp, quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
+        quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
         default_mem_quota = quota_set['ram']
         mem_quota = 0  # Set the quota to zero to conserve resources
 
@@ -79,7 +81,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_create_server_when_instances_quota_is_full(self):
         # Once instances quota limit is reached, disallow server creation
-        resp, quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
+        quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
         default_instances_quota = quota_set['instances']
         instances_quota = 0  # Set quota to zero to disallow server creation
 
@@ -91,18 +93,18 @@
         self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
                           self.create_test_server)
 
-    @test.skip_because(bug="1186354",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1186354",
+                             condition=CONF.service_available.neutron)
     @test.attr(type='gate')
     @test.services('network')
     def test_security_groups_exceed_limit(self):
         # Negative test: Creation Security Groups over limit should FAIL
 
-        resp, quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
+        quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
         default_sg_quota = quota_set['security_groups']
         sg_quota = 0  # Set the quota to zero to conserve resources
 
-        resp, quota_set =\
+        quota_set =\
             self.adm_client.update_quota_set(self.demo_tenant_id,
                                              force=True,
                                              security_groups=sg_quota)
@@ -118,19 +120,19 @@
                           self.sg_client.create_security_group,
                           "sg-overlimit", "sg-desc")
 
-    @test.skip_because(bug="1186354",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1186354",
+                             condition=CONF.service_available.neutron)
     @test.attr(type=['negative', 'gate'])
     @test.services('network')
     def test_security_groups_rules_exceed_limit(self):
         # Negative test: Creation of Security Group Rules should FAIL
         # when we reach limit maxSecurityGroupRules
 
-        resp, quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
+        quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
         default_sg_rules_quota = quota_set['security_group_rules']
         sg_rules_quota = 0  # Set the quota to zero to conserve resources
 
-        resp, quota_set =\
+        quota_set =\
             self.adm_client.update_quota_set(
                 self.demo_tenant_id,
                 force=True,
@@ -142,7 +144,7 @@
 
         s_name = data_utils.rand_name('securitygroup-')
         s_description = data_utils.rand_name('description-')
-        resp, securitygroup =\
+        securitygroup =\
             self.sg_client.create_security_group(s_name, s_description)
         self.addCleanup(self.sg_client.delete_security_group,
                         securitygroup['id'])
diff --git a/tempest/api/compute/admin/test_security_group_default_rules.py b/tempest/api/compute/admin/test_security_group_default_rules.py
index 4c0bd47..563d517 100644
--- a/tempest/api/compute/admin/test_security_group_default_rules.py
+++ b/tempest/api/compute/admin/test_security_group_default_rules.py
@@ -40,7 +40,7 @@
                                              from_port=22, to_port=22,
                                              cidr='10.10.0.0/24'):
         # Create Security Group default rule
-        _, rule = self.adm_client.create_security_default_group_rule(
+        rule = self.adm_client.create_security_default_group_rule(
             ip_protocol,
             from_port,
             to_port,
@@ -68,7 +68,7 @@
         ip_protocol = 'udp'
         from_port = 80
         to_port = 80
-        _, rule = self.adm_client.create_security_default_group_rule(
+        rule = self.adm_client.create_security_default_group_rule(
             ip_protocol,
             from_port,
             to_port)
@@ -83,7 +83,7 @@
         from_port = 10
         to_port = 10
         cidr = ''
-        _, rule = self.adm_client.create_security_default_group_rule(
+        rule = self.adm_client.create_security_default_group_rule(
             ip_protocol,
             from_port,
             to_port,
@@ -105,7 +105,7 @@
                                                          cidr)
         self.addCleanup(self.adm_client.delete_security_group_default_rule,
                         rule['id'])
-        _, rules = self.adm_client.list_security_group_default_rules()
+        rules = self.adm_client.list_security_group_default_rules()
         self.assertNotEqual(0, len(rules))
         self.assertIn(rule, rules)
 
@@ -121,6 +121,6 @@
                                                          cidr)
         self.addCleanup(self.adm_client.delete_security_group_default_rule,
                         rule['id'])
-        _, fetched_rule = self.adm_client.get_security_group_default_rule(
+        fetched_rule = self.adm_client.get_security_group_default_rule(
             rule['id'])
         self.assertEqual(rule, fetched_rule)
diff --git a/tempest/api/compute/admin/test_security_groups.py b/tempest/api/compute/admin/test_security_groups.py
index b4615f2..82cb26e 100644
--- a/tempest/api/compute/admin/test_security_groups.py
+++ b/tempest/api/compute/admin/test_security_groups.py
@@ -33,11 +33,9 @@
 
     def _delete_security_group(self, securitygroup_id, admin=True):
         if admin:
-            resp, _ = self.adm_client.delete_security_group(securitygroup_id)
+            self.adm_client.delete_security_group(securitygroup_id)
         else:
-            resp, _ = self.client.delete_security_group(securitygroup_id)
-
-        self.assertEqual(202, resp.status)
+            self.client.delete_security_group(securitygroup_id)
 
     @testtools.skipIf(CONF.service_available.neutron,
                       "Skipped because neutron do not support all_tenants"
@@ -52,9 +50,8 @@
         for i in range(2):
             name = data_utils.rand_name('securitygroup-')
             description = data_utils.rand_name('description-')
-            resp, securitygroup = (self.client
-                                   .create_security_group(name, description))
-            self.assertEqual(200, resp.status)
+            securitygroup = (self.client
+                             .create_security_group(name, description))
             self.addCleanup(self._delete_security_group,
                             securitygroup['id'], admin=False)
             security_group_list.append(securitygroup)
@@ -64,18 +61,16 @@
         for i in range(2):
             name = data_utils.rand_name('securitygroup-')
             description = data_utils.rand_name('description-')
-            resp, adm_securitygroup = (self.adm_client
-                                       .create_security_group(name,
-                                                              description))
-            self.assertEqual(200, resp.status)
+            adm_securitygroup = (self.adm_client
+                                 .create_security_group(name,
+                                                        description))
             self.addCleanup(self._delete_security_group,
                             adm_securitygroup['id'])
             security_group_list.append(adm_securitygroup)
 
         # Fetch all security groups based on 'all_tenants' search filter
         param = {'all_tenants': 'true'}
-        resp, fetched_list = self.adm_client.list_security_groups(params=param)
-        self.assertEqual(200, resp.status)
+        fetched_list = self.adm_client.list_security_groups(params=param)
         sec_group_id_list = map(lambda sg: sg['id'], fetched_list)
         # Now check if all created Security Groups are present in fetched list
         for sec_group in security_group_list:
@@ -83,8 +78,7 @@
 
         # Fetch all security groups for non-admin user with 'all_tenants'
         # search filter
-        resp, fetched_list = self.client.list_security_groups(params=param)
-        self.assertEqual(200, resp.status)
+        fetched_list = self.client.list_security_groups(params=param)
         # Now check if all created Security Groups are present in fetched list
         for sec_group in fetched_list:
             self.assertEqual(sec_group['tenant_id'], client_tenant_id,
diff --git a/tempest/api/compute/admin/test_servers.py b/tempest/api/compute/admin/test_servers.py
index 5210077..cff9a43 100644
--- a/tempest/api/compute/admin/test_servers.py
+++ b/tempest/api/compute/admin/test_servers.py
@@ -12,6 +12,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import test
@@ -142,7 +144,7 @@
         self.assertEqual(server['status'], 'ACTIVE')
 
     @test.attr(type='gate')
-    @test.skip_because(bug="1240043")
+    @decorators.skip_because(bug="1240043")
     def test_get_server_diagnostics_by_admin(self):
         # Retrieve server diagnostics by admin user
         resp, diagnostic = self.client.get_server_diagnostics(self.s1_id)
diff --git a/tempest/api/compute/admin/test_servers_negative.py b/tempest/api/compute/admin/test_servers_negative.py
index 2f0af72..0dddc76 100644
--- a/tempest/api/compute/admin/test_servers_negative.py
+++ b/tempest/api/compute/admin/test_servers_negative.py
@@ -49,7 +49,7 @@
         flavor_id = data_utils.rand_int_id(start=1000)
         while True:
             try:
-                resp, body = self.flavors_client.get_flavor_details(flavor_id)
+                self.flavors_client.get_flavor_details(flavor_id)
             except exceptions.NotFound:
                 break
             flavor_id = data_utils.rand_int_id(start=1000)
@@ -63,14 +63,13 @@
         self.useFixture(fixtures.LockFixture('compute_quotas'))
         flavor_name = data_utils.rand_name("flavor-")
         flavor_id = self._get_unused_flavor_id()
-        resp, quota_set = self.quotas_client.get_default_quota_set(
-            self.tenant_id)
+        quota_set = self.quotas_client.get_default_quota_set(self.tenant_id)
         ram = int(quota_set['ram']) + 1
         vcpus = 8
         disk = 10
-        resp, flavor_ref = self.flavors_client.create_flavor(flavor_name,
-                                                             ram, vcpus, disk,
-                                                             flavor_id)
+        flavor_ref = self.flavors_client.create_flavor(flavor_name,
+                                                       ram, vcpus, disk,
+                                                       flavor_id)
         self.addCleanup(self.flavors_client.delete_flavor, flavor_id)
         self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
                           self.client.resize,
@@ -86,13 +85,12 @@
         flavor_name = data_utils.rand_name("flavor-")
         flavor_id = self._get_unused_flavor_id()
         ram = 512
-        resp, quota_set = self.quotas_client.get_default_quota_set(
-            self.tenant_id)
+        quota_set = self.quotas_client.get_default_quota_set(self.tenant_id)
         vcpus = int(quota_set['cores']) + 1
         disk = 10
-        resp, flavor_ref = self.flavors_client.create_flavor(flavor_name,
-                                                             ram, vcpus, disk,
-                                                             flavor_id)
+        flavor_ref = self.flavors_client.create_flavor(flavor_name,
+                                                       ram, vcpus, disk,
+                                                       flavor_id)
         self.addCleanup(self.flavors_client.delete_flavor, flavor_id)
         self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
                           self.client.resize,
diff --git a/tempest/api/compute/base.py b/tempest/api/compute/base.py
index c245eb4..3e80bf2 100644
--- a/tempest/api/compute/base.py
+++ b/tempest/api/compute/base.py
@@ -159,8 +159,7 @@
             str(sg['id']) for sg in cls.security_groups))
         for sg in cls.security_groups:
             try:
-                resp, body =\
-                    cls.security_groups_client.delete_security_group(sg['id'])
+                cls.security_groups_client.delete_security_group(sg['id'])
             except exceptions.NotFound:
                 # The security group may have already been deleted which is OK.
                 pass
@@ -235,12 +234,12 @@
             name = data_utils.rand_name(cls.__name__ + "-securitygroup")
         if description is None:
             description = data_utils.rand_name('description-')
-        resp, body = \
+        body = \
             cls.security_groups_client.create_security_group(name,
                                                              description)
         cls.security_groups.append(body)
 
-        return resp, body
+        return body
 
     @classmethod
     def create_test_server_group(cls, name="", policy=None):
diff --git a/tempest/api/compute/flavors/test_flavors.py b/tempest/api/compute/flavors/test_flavors.py
index 992f86a..c91ce17 100644
--- a/tempest/api/compute/flavors/test_flavors.py
+++ b/tempest/api/compute/flavors/test_flavors.py
@@ -31,8 +31,8 @@
     @test.attr(type='smoke')
     def test_list_flavors(self):
         # List of all flavors should contain the expected flavor
-        resp, flavors = self.client.list_flavors()
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavors = self.client.list_flavors()
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_min_detail = {'id': flavor['id'], 'links': flavor['links'],
                              'name': flavor['name']}
         self.assertIn(flavor_min_detail, flavors)
@@ -40,88 +40,88 @@
     @test.attr(type='smoke')
     def test_list_flavors_with_detail(self):
         # Detailed list of all flavors should contain the expected flavor
-        resp, flavors = self.client.list_flavors_with_detail()
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavors = self.client.list_flavors_with_detail()
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         self.assertIn(flavor, flavors)
 
     @test.attr(type='smoke')
     def test_get_flavor(self):
         # The expected flavor details should be returned
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         self.assertEqual(self.flavor_ref, flavor['id'])
 
     @test.attr(type='gate')
     def test_list_flavors_limit_results(self):
         # Only the expected number of flavors should be returned
         params = {'limit': 1}
-        resp, flavors = self.client.list_flavors(params)
+        flavors = self.client.list_flavors(params)
         self.assertEqual(1, len(flavors))
 
     @test.attr(type='gate')
     def test_list_flavors_detailed_limit_results(self):
         # Only the expected number of flavors (detailed) should be returned
         params = {'limit': 1}
-        resp, flavors = self.client.list_flavors_with_detail(params)
+        flavors = self.client.list_flavors_with_detail(params)
         self.assertEqual(1, len(flavors))
 
     @test.attr(type='gate')
     def test_list_flavors_using_marker(self):
         # The list of flavors should start from the provided marker
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_id = flavor['id']
 
         params = {'marker': flavor_id}
-        resp, flavors = self.client.list_flavors(params)
+        flavors = self.client.list_flavors(params)
         self.assertFalse(any([i for i in flavors if i['id'] == flavor_id]),
                          'The list of flavors did not start after the marker.')
 
     @test.attr(type='gate')
     def test_list_flavors_detailed_using_marker(self):
         # The list of flavors should start from the provided marker
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_id = flavor['id']
 
         params = {'marker': flavor_id}
-        resp, flavors = self.client.list_flavors_with_detail(params)
+        flavors = self.client.list_flavors_with_detail(params)
         self.assertFalse(any([i for i in flavors if i['id'] == flavor_id]),
                          'The list of flavors did not start after the marker.')
 
     @test.attr(type='gate')
     def test_list_flavors_detailed_filter_by_min_disk(self):
         # The detailed list of flavors should be filtered by disk space
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_id = flavor['id']
 
         params = {self._min_disk: flavor['disk'] + 1}
-        resp, flavors = self.client.list_flavors_with_detail(params)
+        flavors = self.client.list_flavors_with_detail(params)
         self.assertFalse(any([i for i in flavors if i['id'] == flavor_id]))
 
     @test.attr(type='gate')
     def test_list_flavors_detailed_filter_by_min_ram(self):
         # The detailed list of flavors should be filtered by RAM
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_id = flavor['id']
 
         params = {self._min_ram: flavor['ram'] + 1}
-        resp, flavors = self.client.list_flavors_with_detail(params)
+        flavors = self.client.list_flavors_with_detail(params)
         self.assertFalse(any([i for i in flavors if i['id'] == flavor_id]))
 
     @test.attr(type='gate')
     def test_list_flavors_filter_by_min_disk(self):
         # The list of flavors should be filtered by disk space
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_id = flavor['id']
 
         params = {self._min_disk: flavor['disk'] + 1}
-        resp, flavors = self.client.list_flavors(params)
+        flavors = self.client.list_flavors(params)
         self.assertFalse(any([i for i in flavors if i['id'] == flavor_id]))
 
     @test.attr(type='gate')
     def test_list_flavors_filter_by_min_ram(self):
         # The list of flavors should be filtered by RAM
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_id = flavor['id']
 
         params = {self._min_ram: flavor['ram'] + 1}
-        resp, flavors = self.client.list_flavors(params)
+        flavors = self.client.list_flavors(params)
         self.assertFalse(any([i for i in flavors if i['id'] == flavor_id]))
diff --git a/tempest/api/compute/floating_ips/test_floating_ips_actions.py b/tempest/api/compute/floating_ips/test_floating_ips_actions.py
index 19f5fba..e6f4fb0 100644
--- a/tempest/api/compute/floating_ips/test_floating_ips_actions.py
+++ b/tempest/api/compute/floating_ips/test_floating_ips_actions.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute.floating_ips import base
 from tempest.common.utils import data_utils
 from tempest import exceptions
@@ -135,7 +137,7 @@
 
         # Make sure no longer associated with old server
         self.assertRaises((exceptions.NotFound,
-                           exceptions.UnprocessableEntity,
+                           lib_exc.UnprocessableEntity,
                            exceptions.Conflict),
                           self.client.disassociate_floating_ip_from_server,
                           self.floating_ip, self.server_id)
diff --git a/tempest/api/compute/images/test_images_oneserver.py b/tempest/api/compute/images/test_images_oneserver.py
index 6156c5a..79cd27a 100644
--- a/tempest/api/compute/images/test_images_oneserver.py
+++ b/tempest/api/compute/images/test_images_oneserver.py
@@ -63,7 +63,7 @@
         cls.server_id = server['id']
 
     def _get_default_flavor_disk_size(self, flavor_id):
-        resp, flavor = self.flavors_client.get_flavor_details(flavor_id)
+        flavor = self.flavors_client.get_flavor_details(flavor_id)
         return flavor['disk']
 
     @test.attr(type='smoke')
diff --git a/tempest/api/compute/keypairs/test_keypairs.py b/tempest/api/compute/keypairs/test_keypairs.py
index ce10fbe..d7884ab 100644
--- a/tempest/api/compute/keypairs/test_keypairs.py
+++ b/tempest/api/compute/keypairs/test_keypairs.py
@@ -28,12 +28,12 @@
         cls.client = cls.keypairs_client
 
     def _delete_keypair(self, keypair_name):
-        resp, _ = self.client.delete_keypair(keypair_name)
+        self.client.delete_keypair(keypair_name)
 
     def _create_keypair(self, keypair_name, pub_key=None):
-        resp, body = self.client.create_keypair(keypair_name, pub_key)
+        body = self.client.create_keypair(keypair_name, pub_key)
         self.addCleanup(self._delete_keypair, keypair_name)
-        return resp, body
+        return body
 
     @test.attr(type='gate')
     def test_keypairs_create_list_delete(self):
@@ -42,7 +42,7 @@
         key_list = list()
         for i in range(3):
             k_name = data_utils.rand_name('keypair-')
-            resp, keypair = self._create_keypair(k_name)
+            keypair = self._create_keypair(k_name)
             # Need to pop these keys so that our compare doesn't fail later,
             # as the keypair dicts from list API doesn't have them.
             keypair.pop('private_key')
@@ -50,8 +50,7 @@
             key_list.append(keypair)
         # Fetch all keypairs and verify the list
         # has all created keypairs
-        resp, fetched_list = self.client.list_keypairs()
-        self.assertEqual(200, resp.status)
+        fetched_list = self.client.list_keypairs()
         # We need to remove the extra 'keypair' element in the
         # returned dict. See comment in keypairs_client.list_keypairs()
         new_list = list()
@@ -68,7 +67,7 @@
     def test_keypair_create_delete(self):
         # Keypair should be created, verified and deleted
         k_name = data_utils.rand_name('keypair-')
-        resp, keypair = self._create_keypair(k_name)
+        keypair = self._create_keypair(k_name)
         private_key = keypair['private_key']
         key_name = keypair['name']
         self.assertEqual(key_name, k_name,
@@ -81,9 +80,8 @@
     def test_get_keypair_detail(self):
         # Keypair should be created, Got details by name and deleted
         k_name = data_utils.rand_name('keypair-')
-        resp, keypair = self._create_keypair(k_name)
-        resp, keypair_detail = self.client.get_keypair(k_name)
-        self.assertEqual(200, resp.status)
+        self._create_keypair(k_name)
+        keypair_detail = self.client.get_keypair(k_name)
         self.assertIn('name', keypair_detail)
         self.assertIn('public_key', keypair_detail)
         self.assertEqual(keypair_detail['name'], k_name,
@@ -106,7 +104,7 @@
                    "LOeB1kYMOBaiUPLQTWXR3JpckqFIQwhIH0zoHlJvZE8hh90"
                    "XcPojYN56tI0OlrGqojbediJYD0rUsJu4weZpbn8vilb3JuDY+jws"
                    "snSA8wzBx3A/8y9Pp1B nova@ubuntu")
-        resp, keypair = self._create_keypair(k_name, pub_key)
+        keypair = self._create_keypair(k_name, pub_key)
         self.assertFalse('private_key' in keypair,
                          "Field private_key is not empty!")
         key_name = keypair['name']
diff --git a/tempest/api/compute/keypairs/test_keypairs_negative.py b/tempest/api/compute/keypairs/test_keypairs_negative.py
index 2cc6f00..4e06d6c 100644
--- a/tempest/api/compute/keypairs/test_keypairs_negative.py
+++ b/tempest/api/compute/keypairs/test_keypairs_negative.py
@@ -66,13 +66,11 @@
     def test_create_keypair_with_duplicate_name(self):
         # Keypairs with duplicate names should not be created
         k_name = data_utils.rand_name('keypair-')
-        resp, _ = self.client.create_keypair(k_name)
-        self.assertEqual(200, resp.status)
+        self.client.create_keypair(k_name)
         # Now try the same keyname to create another key
         self.assertRaises(exceptions.Conflict, self._create_keypair,
                           k_name)
-        resp, _ = self.client.delete_keypair(k_name)
-        self.assertEqual(202, resp.status)
+        self.client.delete_keypair(k_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_keypair_with_empty_name_string(self):
diff --git a/tempest/api/compute/limits/test_absolute_limits.py b/tempest/api/compute/limits/test_absolute_limits.py
index 4420ac7..520dfa9 100644
--- a/tempest/api/compute/limits/test_absolute_limits.py
+++ b/tempest/api/compute/limits/test_absolute_limits.py
@@ -27,7 +27,7 @@
     @test.attr(type='gate')
     def test_absLimits_get(self):
         # To check if all limits are present in the response
-        resp, absolute_limits = self.client.get_absolute_limits()
+        absolute_limits = self.client.get_absolute_limits()
         expected_elements = ['maxImageMeta', 'maxPersonality',
                              'maxPersonalitySize',
                              'maxServerMeta', 'maxTotalCores',
diff --git a/tempest/api/compute/security_groups/test_security_group_rules.py b/tempest/api/compute/security_groups/test_security_group_rules.py
index be06213..527f2dd 100644
--- a/tempest/api/compute/security_groups/test_security_group_rules.py
+++ b/tempest/api/compute/security_groups/test_security_group_rules.py
@@ -61,10 +61,10 @@
         # Positive test: Creation of Security Group rule
         # should be successful
         # Creating a Security Group to add rules to it
-        _, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         securitygroup_id = security_group['id']
         # Adding rules to the created Security Group
-        _, rule = \
+        rule = \
             self.client.create_security_group_rule(securitygroup_id,
                                                    self.ip_protocol,
                                                    self.from_port,
@@ -81,12 +81,12 @@
         # should be successful
 
         # Creating a Security Group to add rules to it
-        _, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         parent_group_id = security_group['id']
 
         # Adding rules to the created Security Group with optional cidr
         cidr = '10.2.3.124/24'
-        _, rule = \
+        rule = \
             self.client.create_security_group_rule(parent_group_id,
                                                    self.ip_protocol,
                                                    self.from_port,
@@ -104,16 +104,16 @@
         # should be successful
 
         # Creating a Security Group to add rules to it
-        _, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         parent_group_id = security_group['id']
 
         # Creating a Security Group so as to assign group_id to the rule
-        _, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         group_id = security_group['id']
         group_name = security_group['name']
 
         # Adding rules to the created Security Group with optional group_id
-        _, rule = \
+        rule = \
             self.client.create_security_group_rule(parent_group_id,
                                                    self.ip_protocol,
                                                    self.from_port,
@@ -130,11 +130,11 @@
         # Positive test: Created Security Group rules should be
         # in the list of all rules
         # Creating a Security Group to add rules to it
-        resp, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         securitygroup_id = security_group['id']
 
         # Add a first rule to the created Security Group
-        resp, rule = \
+        rule = \
             self.client.create_security_group_rule(securitygroup_id,
                                                    self.ip_protocol,
                                                    self.from_port,
@@ -145,7 +145,7 @@
         ip_protocol2 = 'icmp'
         from_port2 = -1
         to_port2 = -1
-        resp, rule = \
+        rule = \
             self.client.create_security_group_rule(securitygroup_id,
                                                    ip_protocol2,
                                                    from_port2, to_port2)
@@ -154,7 +154,7 @@
         self.addCleanup(self.client.delete_security_group_rule, rule2_id)
 
         # Get rules of the created Security Group
-        resp, rules = \
+        rules = \
             self.client.list_security_group_rules(securitygroup_id)
         self.assertTrue(any([i for i in rules if i['id'] == rule1_id]))
         self.assertTrue(any([i for i in rules if i['id'] == rule2_id]))
@@ -164,25 +164,22 @@
     def test_security_group_rules_delete_when_peer_group_deleted(self):
         # Positive test:rule will delete when peer group deleting
         # Creating a Security Group to add rules to it
-        resp, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         sg1_id = security_group['id']
         # Creating other Security Group to access to group1
-        resp, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         sg2_id = security_group['id']
         # Adding rules to the Group1
-        resp, rule = \
-            self.client.create_security_group_rule(sg1_id,
-                                                   self.ip_protocol,
-                                                   self.from_port,
-                                                   self.to_port,
-                                                   group_id=sg2_id)
+        self.client.create_security_group_rule(sg1_id,
+                                               self.ip_protocol,
+                                               self.from_port,
+                                               self.to_port,
+                                               group_id=sg2_id)
 
-        self.assertEqual(200, resp.status)
         # Delete group2
-        resp, body = self.client.delete_security_group(sg2_id)
-        self.assertEqual(202, resp.status)
+        self.client.delete_security_group(sg2_id)
         # Get rules of the Group1
-        resp, rules = \
+        rules = \
             self.client.list_security_group_rules(sg1_id)
         # The group1 has no rules because group2 has deleted
         self.assertEqual(0, len(rules))
diff --git a/tempest/api/compute/security_groups/test_security_group_rules_negative.py b/tempest/api/compute/security_groups/test_security_group_rules_negative.py
index 88a99b9..d97c404 100644
--- a/tempest/api/compute/security_groups/test_security_group_rules_negative.py
+++ b/tempest/api/compute/security_groups/test_security_group_rules_negative.py
@@ -69,20 +69,19 @@
     def test_create_security_group_rule_duplicate(self):
         # Negative test: Create Security Group rule duplicate should fail
         # Creating a Security Group to add rule to it
-        resp, sg = self.create_security_group()
+        sg = self.create_security_group()
         # Adding rules to the created Security Group
         parent_group_id = sg['id']
         ip_protocol = 'tcp'
         from_port = 22
         to_port = 22
 
-        resp, rule = \
+        rule = \
             self.client.create_security_group_rule(parent_group_id,
                                                    ip_protocol,
                                                    from_port,
                                                    to_port)
         self.addCleanup(self.client.delete_security_group_rule, rule['id'])
-        self.assertEqual(200, resp.status)
         # Add the same rule to the group should fail
         self.assertRaises(exceptions.BadRequest,
                           self.client.create_security_group_rule,
@@ -94,7 +93,7 @@
         # Negative test: Creation of Security Group rule should FAIL
         # with invalid ip_protocol
         # Creating a Security Group to add rule to it
-        resp, sg = self.create_security_group()
+        sg = self.create_security_group()
         # Adding rules to the created Security Group
         parent_group_id = sg['id']
         ip_protocol = data_utils.rand_name('999')
@@ -111,7 +110,7 @@
         # Negative test: Creation of Security Group rule should FAIL
         # with invalid from_port
         # Creating a Security Group to add rule to it
-        resp, sg = self.create_security_group()
+        sg = self.create_security_group()
         # Adding rules to the created Security Group
         parent_group_id = sg['id']
         ip_protocol = 'tcp'
@@ -127,7 +126,7 @@
         # Negative test: Creation of Security Group rule should FAIL
         # with invalid to_port
         # Creating a Security Group to add rule to it
-        resp, sg = self.create_security_group()
+        sg = self.create_security_group()
         # Adding rules to the created Security Group
         parent_group_id = sg['id']
         ip_protocol = 'tcp'
@@ -143,7 +142,7 @@
         # Negative test: Creation of Security Group rule should FAIL
         # with invalid port range.
         # Creating a Security Group to add rule to it.
-        resp, sg = self.create_security_group()
+        sg = self.create_security_group()
         # Adding a rule to the created Security Group
         secgroup_id = sg['id']
         ip_protocol = 'tcp'
diff --git a/tempest/api/compute/security_groups/test_security_groups.py b/tempest/api/compute/security_groups/test_security_groups.py
index 1cfb16b..909d444 100644
--- a/tempest/api/compute/security_groups/test_security_groups.py
+++ b/tempest/api/compute/security_groups/test_security_groups.py
@@ -33,13 +33,11 @@
         # Create 3 Security Groups
         security_group_list = []
         for i in range(3):
-            resp, body = self.create_security_group()
-            self.assertEqual(200, resp.status)
+            body = self.create_security_group()
             security_group_list.append(body)
         # Fetch all Security Groups and verify the list
         # has all created Security Groups
-        resp, fetched_list = self.client.list_security_groups()
-        self.assertEqual(200, resp.status)
+        fetched_list = self.client.list_security_groups()
         # Now check if all the created Security Groups are in fetched list
         missing_sgs = \
             [sg for sg in security_group_list if sg not in fetched_list]
@@ -49,11 +47,10 @@
                                             for m_group in missing_sgs))
         # Delete all security groups
         for sg in security_group_list:
-            resp, _ = self.client.delete_security_group(sg['id'])
-            self.assertEqual(202, resp.status)
+            self.client.delete_security_group(sg['id'])
             self.client.wait_for_resource_deletion(sg['id'])
         # Now check if all the created Security Groups are deleted
-        resp, fetched_list = self.client.list_security_groups()
+        fetched_list = self.client.list_security_groups()
         deleted_sgs = \
             [sg for sg in security_group_list if sg in fetched_list]
         self.assertFalse(deleted_sgs,
@@ -68,22 +65,19 @@
         # with char space between name along with
         # leading and trailing spaces
         s_name = ' %s ' % data_utils.rand_name('securitygroup ')
-        resp, securitygroup = self.create_security_group(name=s_name)
-        self.assertEqual(200, resp.status)
+        securitygroup = self.create_security_group(name=s_name)
         self.assertIn('name', securitygroup)
         securitygroup_name = securitygroup['name']
         self.assertEqual(securitygroup_name, s_name,
                          "The created Security Group name is "
                          "not equal to the requested name")
         # Now fetch the created Security Group by its 'id'
-        resp, fetched_group = \
+        fetched_group = \
             self.client.get_security_group(securitygroup['id'])
-        self.assertEqual(200, resp.status)
         self.assertEqual(securitygroup, fetched_group,
                          "The fetched Security Group is different "
                          "from the created Group")
-        resp, _ = self.client.delete_security_group(securitygroup['id'])
-        self.assertEqual(202, resp.status)
+        self.client.delete_security_group(securitygroup['id'])
         self.client.wait_for_resource_deletion(securitygroup['id'])
 
     @test.attr(type='smoke')
@@ -93,8 +87,8 @@
         # and not deleted if the server is active.
         # Create a couple security groups that we will use
         # for the server resource this test creates
-        resp, sg = self.create_security_group()
-        resp, sg2 = self.create_security_group()
+        sg = self.create_security_group()
+        sg2 = self.create_security_group()
 
         # Create server and add the security group created
         # above to the server we just created
@@ -128,30 +122,25 @@
         self.servers_client.delete_server(server_id)
         self.servers_client.wait_for_server_termination(server_id)
 
-        resp, _ = self.client.delete_security_group(sg['id'])
-        self.assertEqual(202, resp.status)
-        resp, _ = self.client.delete_security_group(sg2['id'])
-        self.assertEqual(202, resp.status)
+        self.client.delete_security_group(sg['id'])
+        self.client.delete_security_group(sg2['id'])
 
     @test.attr(type='smoke')
     @test.services('network')
     def test_update_security_groups(self):
         # Update security group name and description
         # Create a security group
-        resp, securitygroup = self.create_security_group()
-        self.assertEqual(200, resp.status)
+        securitygroup = self.create_security_group()
         self.assertIn('id', securitygroup)
         securitygroup_id = securitygroup['id']
         # Update the name and description
         s_new_name = data_utils.rand_name('sg-hth-')
         s_new_des = data_utils.rand_name('description-hth-')
-        resp, sg_new = \
-            self.client.update_security_group(securitygroup_id,
-                                              name=s_new_name,
-                                              description=s_new_des)
-        self.assertEqual(200, resp.status)
+        self.client.update_security_group(securitygroup_id,
+                                          name=s_new_name,
+                                          description=s_new_des)
         # get the security group
-        resp, fetched_group = \
+        fetched_group = \
             self.client.get_security_group(securitygroup_id)
         self.assertEqual(s_new_name, fetched_group['name'])
         self.assertEqual(s_new_des, fetched_group['description'])
diff --git a/tempest/api/compute/security_groups/test_security_groups_negative.py b/tempest/api/compute/security_groups/test_security_groups_negative.py
index ce06180..ee9f78b 100644
--- a/tempest/api/compute/security_groups/test_security_groups_negative.py
+++ b/tempest/api/compute/security_groups/test_security_groups_negative.py
@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
 import testtools
 
 from tempest.api.compute.security_groups import base
@@ -34,7 +35,7 @@
 
     def _generate_a_non_existent_security_group_id(self):
         security_group_id = []
-        resp, body = self.client.list_security_groups()
+        body = self.client.list_security_groups()
         for i in range(len(body)):
             security_group_id.append(body[i]['id'])
         # Generate a non-existent security group id
@@ -55,8 +56,8 @@
         self.assertRaises(exceptions.NotFound, self.client.get_security_group,
                           non_exist_id)
 
-    @test.skip_because(bug="1161411",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1161411",
+                             condition=CONF.service_available.neutron)
     @test.attr(type=['negative', 'smoke'])
     @test.services('network')
     def test_security_group_create_with_invalid_group_name(self):
@@ -76,8 +77,8 @@
                           self.client.create_security_group, s_name,
                           s_description)
 
-    @test.skip_because(bug="1161411",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1161411",
+                             condition=CONF.service_available.neutron)
     @test.attr(type=['negative', 'smoke'])
     @test.services('network')
     def test_security_group_create_with_invalid_group_description(self):
@@ -105,9 +106,7 @@
         # be created
         s_name = data_utils.rand_name('securitygroup-')
         s_description = data_utils.rand_name('description-')
-        resp, security_group =\
-            self.create_security_group(s_name, s_description)
-        self.assertEqual(200, resp.status)
+        self.create_security_group(s_name, s_description)
         # Now try the Security Group with the same 'Name'
         self.assertRaises(exceptions.BadRequest,
                           self.client.create_security_group, s_name,
@@ -118,7 +117,7 @@
     def test_delete_the_default_security_group(self):
         # Negative test:Deletion of the "default" Security Group should Fail
         default_security_group_id = None
-        resp, body = self.client.list_security_groups()
+        body = self.client.list_security_groups()
         for i in range(len(body)):
             if body[i]['name'] == 'default':
                 default_security_group_id = body[i]['id']
@@ -164,8 +163,7 @@
     @test.services('network')
     def test_update_security_group_with_invalid_sg_name(self):
         # Update security_group with invalid sg_name should fail
-        resp, securitygroup = self.create_security_group()
-        self.assertEqual(200, resp.status)
+        securitygroup = self.create_security_group()
         self.assertIn('id', securitygroup)
         securitygroup_id = securitygroup['id']
         # Update Security Group with group name longer than 255 chars
@@ -180,8 +178,7 @@
     @test.services('network')
     def test_update_security_group_with_invalid_sg_des(self):
         # Update security_group with invalid sg_des should fail
-        resp, securitygroup = self.create_security_group()
-        self.assertEqual(200, resp.status)
+        securitygroup = self.create_security_group()
         self.assertIn('id', securitygroup)
         securitygroup_id = securitygroup['id']
         # Update Security Group with group description longer than 255 chars
diff --git a/tempest/api/compute/servers/test_create_server.py b/tempest/api/compute/servers/test_create_server.py
index 13ec045..85eb049 100644
--- a/tempest/api/compute/servers/test_create_server.py
+++ b/tempest/api/compute/servers/test_create_server.py
@@ -89,7 +89,7 @@
     def test_verify_created_server_vcpus(self):
         # Verify that the number of vcpus reported by the instance matches
         # the amount stated by the flavor
-        resp, flavor = self.flavors_client.get_flavor_details(self.flavor_ref)
+        flavor = self.flavors_client.get_flavor_details(self.flavor_ref)
         linux_client = remote_client.RemoteClient(self.server, self.ssh_user,
                                                   self.password)
         self.assertEqual(flavor['vcpus'], linux_client.get_number_of_vcpus())
@@ -210,13 +210,12 @@
             disk = 0
 
             # Create a flavor with extra specs
-            resp, flavor = (self.flavor_client.
-                            create_flavor(flavor_with_eph_disk_name,
-                                          ram, vcpus, disk,
-                                          flavor_with_eph_disk_id,
-                                          ephemeral=1))
+            flavor = (self.flavor_client.
+                      create_flavor(flavor_with_eph_disk_name,
+                                    ram, vcpus, disk,
+                                    flavor_with_eph_disk_id,
+                                    ephemeral=1))
             self.addCleanup(flavor_clean_up, flavor['id'])
-            self.assertEqual(200, resp.status)
 
             return flavor['id']
 
@@ -229,18 +228,16 @@
             disk = 0
 
             # Create a flavor without extra specs
-            resp, flavor = (self.flavor_client.
-                            create_flavor(flavor_no_eph_disk_name,
-                                          ram, vcpus, disk,
-                                          flavor_no_eph_disk_id))
+            flavor = (self.flavor_client.
+                      create_flavor(flavor_no_eph_disk_name,
+                                    ram, vcpus, disk,
+                                    flavor_no_eph_disk_id))
             self.addCleanup(flavor_clean_up, flavor['id'])
-            self.assertEqual(200, resp.status)
 
             return flavor['id']
 
         def flavor_clean_up(flavor_id):
-            resp, body = self.flavor_client.delete_flavor(flavor_id)
-            self.assertEqual(resp.status, 202)
+            self.flavor_client.delete_flavor(flavor_id)
             self.flavor_client.wait_for_resource_deletion(flavor_id)
 
         flavor_with_eph_disk_id = create_flavor_with_extra_specs()
diff --git a/tempest/api/compute/servers/test_list_server_filters.py b/tempest/api/compute/servers/test_list_server_filters.py
index 7964cf7..375f441 100644
--- a/tempest/api/compute/servers/test_list_server_filters.py
+++ b/tempest/api/compute/servers/test_list_server_filters.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.compute import base
 from tempest.api import utils
 from tempest.common.utils import data_utils
@@ -269,8 +271,8 @@
         self.assertNotIn(self.s2_name, map(lambda x: x['name'], servers))
         self.assertNotIn(self.s3_name, map(lambda x: x['name'], servers))
 
-    @test.skip_because(bug="1182883",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1182883",
+                             condition=CONF.service_available.neutron)
     @test.attr(type='gate')
     def test_list_servers_filtered_by_ip_regex(self):
         # Filter servers by regex ip
diff --git a/tempest/api/compute/servers/test_server_actions.py b/tempest/api/compute/servers/test_server_actions.py
index 17e3669..9edaede 100644
--- a/tempest/api/compute/servers/test_server_actions.py
+++ b/tempest/api/compute/servers/test_server_actions.py
@@ -17,6 +17,7 @@
 import logging
 import urlparse
 
+from tempest_lib import decorators
 import testtools
 
 from tempest.api.compute import base
@@ -100,7 +101,7 @@
         # The server should be power cycled
         self._test_reboot_server('HARD')
 
-    @test.skip_because(bug="1014647")
+    @decorators.skip_because(bug="1014647")
     @test.attr(type='smoke')
     def test_reboot_server_soft(self):
         # The server should be signaled to reboot gracefully
diff --git a/tempest/api/compute/servers/test_server_group.py b/tempest/api/compute/servers/test_server_group.py
index 0af19c0..fe5dca0 100644
--- a/tempest/api/compute/servers/test_server_group.py
+++ b/tempest/api/compute/servers/test_server_group.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import test
@@ -74,7 +76,7 @@
         policy = ['anti-affinity']
         self._create_delete_server_group(policy)
 
-    @test.skip_because(bug="1324348")
+    @decorators.skip_because(bug="1324348")
     @test.attr(type='gate')
     def test_create_delete_server_group_with_multiple_policies(self):
         # Create and Delete the server-group with multiple policies
diff --git a/tempest/api/compute/servers/test_server_metadata_negative.py b/tempest/api/compute/servers/test_server_metadata_negative.py
index ee1e652..e193677 100644
--- a/tempest/api/compute/servers/test_server_metadata_negative.py
+++ b/tempest/api/compute/servers/test_server_metadata_negative.py
@@ -122,7 +122,7 @@
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised while exceeding metadata items limit for
         # tenant.
-        _, quota_set = self.quotas.get_quota_set(self.tenant_id)
+        quota_set = self.quotas.get_quota_set(self.tenant_id)
         quota_metadata = quota_set['metadata_items']
         if quota_metadata == -1:
             raise self.skipException("No limit for metadata_items")
diff --git a/tempest/api/compute/servers/test_server_rescue.py b/tempest/api/compute/servers/test_server_rescue.py
index ee1e268..b04fe69 100644
--- a/tempest/api/compute/servers/test_server_rescue.py
+++ b/tempest/api/compute/servers/test_server_rescue.py
@@ -40,7 +40,7 @@
         # Security group creation
         cls.sg_name = data_utils.rand_name('sg')
         cls.sg_desc = data_utils.rand_name('sg-desc')
-        resp, cls.sg = \
+        cls.sg = \
             cls.security_groups_client.create_security_group(cls.sg_name,
                                                              cls.sg_desc)
         cls.sg_id = cls.sg['id']
@@ -58,7 +58,7 @@
     def resource_cleanup(cls):
         # Deleting the floating IP which is created in this method
         cls.floating_ips_client.delete_floating_ip(cls.floating_ip_id)
-        resp, cls.sg = cls.security_groups_client.delete_security_group(
+        cls.sg = cls.security_groups_client.delete_security_group(
             cls.sg_id)
         super(ServerRescueTestJSON, cls).resource_cleanup()
 
diff --git a/tempest/api/compute/servers/test_servers.py b/tempest/api/compute/servers/test_servers.py
index aba6dff..d31b320 100644
--- a/tempest/api/compute/servers/test_servers.py
+++ b/tempest/api/compute/servers/test_servers.py
@@ -62,8 +62,8 @@
         # Specify a keypair while creating a server
 
         key_name = data_utils.rand_name('key')
-        resp, keypair = self.keypairs_client.create_keypair(key_name)
-        resp, body = self.keypairs_client.list_keypairs()
+        self.keypairs_client.create_keypair(key_name)
+        self.keypairs_client.list_keypairs()
         resp, server = self.create_test_server(key_name=key_name)
         self.assertEqual('202', resp['status'])
         self.client.wait_for_server_status(server['id'], 'ACTIVE')
diff --git a/tempest/api/compute/servers/test_virtual_interfaces.py b/tempest/api/compute/servers/test_virtual_interfaces.py
index 48af084..e07a7ed 100644
--- a/tempest/api/compute/servers/test_virtual_interfaces.py
+++ b/tempest/api/compute/servers/test_virtual_interfaces.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 import netaddr
+from tempest_lib import decorators
 
 from tempest.api.compute import base
 from tempest import config
@@ -33,8 +34,8 @@
         resp, server = cls.create_test_server(wait_until='ACTIVE')
         cls.server_id = server['id']
 
-    @test.skip_because(bug="1183436",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1183436",
+                             condition=CONF.service_available.neutron)
     @test.attr(type='gate')
     @test.services('network')
     def test_list_virtual_interfaces(self):
diff --git a/tempest/api/compute/test_authorization.py b/tempest/api/compute/test_authorization.py
index 60cb812..cdbaee8 100644
--- a/tempest/api/compute/test_authorization.py
+++ b/tempest/api/compute/test_authorization.py
@@ -68,19 +68,18 @@
         cls.image = cls.images_client.get_image(image_id)
 
         cls.keypairname = data_utils.rand_name('keypair')
-        resp, keypair = \
-            cls.keypairs_client.create_keypair(cls.keypairname)
+        cls.keypairs_client.create_keypair(cls.keypairname)
 
         name = data_utils.rand_name('security')
         description = data_utils.rand_name('description')
-        resp, cls.security_group = cls.security_client.create_security_group(
+        cls.security_group = cls.security_client.create_security_group(
             name, description)
 
         parent_group_id = cls.security_group['id']
         ip_protocol = 'tcp'
         from_port = 22
         to_port = 22
-        resp, cls.rule = cls.security_client.create_security_group_rule(
+        cls.rule = cls.security_client.create_security_group_rule(
             parent_group_id, ip_protocol, from_port, to_port)
 
     @classmethod
@@ -202,7 +201,7 @@
         finally:
             # Next request the base_url is back to normal
             if (resp['status'] is not None):
-                resp, _ = self.alt_keypairs_client.delete_keypair(k_name)
+                self.alt_keypairs_client.delete_keypair(k_name)
                 LOG.error("Create keypair request should not happen "
                           "if the tenant id does not match the current user")
 
diff --git a/tempest/api/compute/test_live_block_migration.py b/tempest/api/compute/test_live_block_migration.py
index 180dffd..eb71d6d 100644
--- a/tempest/api/compute/test_live_block_migration.py
+++ b/tempest/api/compute/test_live_block_migration.py
@@ -77,7 +77,7 @@
             return server_id
 
     def _volume_clean_up(self, server_id, volume_id):
-        resp, body = self.volumes_client.get_volume(volume_id)
+        body = self.volumes_client.get_volume(volume_id)
         if body['status'] == 'in-use':
             self.servers_client.detach_volume(server_id, volume_id)
             self.volumes_client.wait_for_volume_status(volume_id, 'available')
diff --git a/tempest/api/compute/test_quotas.py b/tempest/api/compute/test_quotas.py
index 4177751..db2e281 100644
--- a/tempest/api/compute/test_quotas.py
+++ b/tempest/api/compute/test_quotas.py
@@ -43,16 +43,14 @@
     def test_get_quotas(self):
         # User can get the quota set for it's tenant
         expected_quota_set = self.default_quota_set | set(['id'])
-        resp, quota_set = self.client.get_quota_set(self.tenant_id)
-        self.assertEqual(200, resp.status)
+        quota_set = self.client.get_quota_set(self.tenant_id)
         self.assertEqual(quota_set['id'], self.tenant_id)
         for quota in expected_quota_set:
             self.assertIn(quota, quota_set.keys())
 
         # get the quota set using user id
-        resp, quota_set = self.client.get_quota_set(self.tenant_id,
-                                                    self.user_id)
-        self.assertEqual(200, resp.status)
+        quota_set = self.client.get_quota_set(self.tenant_id,
+                                              self.user_id)
         self.assertEqual(quota_set['id'], self.tenant_id)
         for quota in expected_quota_set:
             self.assertIn(quota, quota_set.keys())
@@ -61,8 +59,7 @@
     def test_get_default_quotas(self):
         # User can get the default quota set for it's tenant
         expected_quota_set = self.default_quota_set | set(['id'])
-        resp, quota_set = self.client.get_default_quota_set(self.tenant_id)
-        self.assertEqual(200, resp.status)
+        quota_set = self.client.get_default_quota_set(self.tenant_id)
         self.assertEqual(quota_set['id'], self.tenant_id)
         for quota in expected_quota_set:
             self.assertIn(quota, quota_set.keys())
@@ -70,9 +67,7 @@
     @test.attr(type='smoke')
     def test_compare_tenant_quotas_with_default_quotas(self):
         # Tenants are created with the default quota values
-        resp, defualt_quota_set = \
+        defualt_quota_set = \
             self.client.get_default_quota_set(self.tenant_id)
-        self.assertEqual(200, resp.status)
-        resp, tenant_quota_set = self.client.get_quota_set(self.tenant_id)
-        self.assertEqual(200, resp.status)
+        tenant_quota_set = self.client.get_quota_set(self.tenant_id)
         self.assertEqual(defualt_quota_set, tenant_quota_set)
diff --git a/tempest/api/database/flavors/test_flavors.py b/tempest/api/database/flavors/test_flavors.py
index aed1abe..ed172e9 100644
--- a/tempest/api/database/flavors/test_flavors.py
+++ b/tempest/api/database/flavors/test_flavors.py
@@ -55,7 +55,7 @@
     @test.services('compute')
     def test_compare_db_flavors_with_os(self):
         _, db_flavors = self.client.list_db_flavors()
-        _, os_flavors = self.os_flavors_client.list_flavors_with_detail()
+        os_flavors = self.os_flavors_client.list_flavors_with_detail()
         self.assertEqual(len(os_flavors), len(db_flavors),
                          "OS flavors %s do not match DB flavors %s" %
                          (os_flavors, db_flavors))
diff --git a/tempest/api/messaging/test_claims.py b/tempest/api/messaging/test_claims.py
index 1b004dd..1aab8d2 100644
--- a/tempest/api/messaging/test_claims.py
+++ b/tempest/api/messaging/test_claims.py
@@ -16,6 +16,8 @@
 import logging
 import urlparse
 
+from tempest_lib import decorators
+
 from tempest.api.messaging import base
 from tempest.common.utils import data_utils
 from tempest import config
@@ -65,7 +67,7 @@
         # Delete Claimed message
         self.client.delete_messages(claimed_message_uri)
 
-    @test.skip_because(bug="1331517")
+    @decorators.skip_because(bug="1331517")
     @test.attr(type='smoke')
     def test_query_claim(self):
         # Post a Claim
@@ -79,7 +81,7 @@
         claimed_message_uri = body[0]['href']
         self.delete_messages(claimed_message_uri)
 
-    @test.skip_because(bug="1328111")
+    @decorators.skip_because(bug="1328111")
     @test.attr(type='smoke')
     def test_update_claim(self):
         # Post a Claim
diff --git a/tempest/api/network/test_load_balancer.py b/tempest/api/network/test_load_balancer.py
index b606115..df76757 100644
--- a/tempest/api/network/test_load_balancer.py
+++ b/tempest/api/network/test_load_balancer.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest import test
@@ -422,6 +424,6 @@
         self.assertEqual(2, member['weight'])
 
 
-@test.skip_because(bug="1402007")
+@decorators.skip_because(bug="1402007")
 class LoadBalancerIpV6TestJSON(LoadBalancerTestJSON):
     _ip_version = 6
diff --git a/tempest/api/network/test_service_type_management.py b/tempest/api/network/test_service_type_management.py
index 447c3f3..0492fe3 100644
--- a/tempest/api/network/test_service_type_management.py
+++ b/tempest/api/network/test_service_type_management.py
@@ -10,6 +10,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.network import base
 from tempest import test
 
@@ -24,7 +26,7 @@
             msg = "Neutron Service Type Management not enabled."
             raise cls.skipException(msg)
 
-    @test.skip_because(bug="1400370")
+    @decorators.skip_because(bug="1400370")
     @test.attr(type='smoke')
     def test_service_provider_list(self):
         body = self.client.list_service_providers()
diff --git a/tempest/api/object_storage/test_account_quotas_negative.py b/tempest/api/object_storage/test_account_quotas_negative.py
index a6ea6ee..5a0be54 100644
--- a/tempest/api/object_storage/test_account_quotas_negative.py
+++ b/tempest/api/object_storage/test_account_quotas_negative.py
@@ -14,6 +14,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.object_storage import base
 from tempest import clients
 from tempest.common.utils import data_utils
@@ -93,7 +95,7 @@
                           {"Quota-Bytes": "100"})
 
     @test.attr(type=["negative", "smoke"])
-    @test.skip_because(bug="1310597")
+    @decorators.skip_because(bug="1310597")
     @test.requires_ext(extension='account_quotas', service='object')
     def test_upload_large_object(self):
         object_name = data_utils.rand_name(name="TestObject")
diff --git a/tempest/api/object_storage/test_container_sync.py b/tempest/api/object_storage/test_container_sync.py
index 7f8cb8b..09b0ce0 100644
--- a/tempest/api/object_storage/test_container_sync.py
+++ b/tempest/api/object_storage/test_container_sync.py
@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
 import testtools
 import time
 import urlparse
@@ -112,7 +113,7 @@
                 self.assertEqual(object_content, obj_name[::-1])
 
     @test.attr(type='slow')
-    @test.skip_because(bug='1317133')
+    @decorators.skip_because(bug='1317133')
     @testtools.skipIf(
         not CONF.object_storage_feature_enabled.container_sync,
         'Old-style container sync function is disabled')
diff --git a/tempest/api/orchestration/base.py b/tempest/api/orchestration/base.py
index d3dffbf..97777db 100644
--- a/tempest/api/orchestration/base.py
+++ b/tempest/api/orchestration/base.py
@@ -97,7 +97,7 @@
     @classmethod
     def _create_keypair(cls, name_start='keypair-heat-'):
         kp_name = data_utils.rand_name(name_start)
-        _, body = cls.keypairs_client.create_keypair(kp_name)
+        body = cls.keypairs_client.create_keypair(kp_name)
         cls.keypairs.append(kp_name)
         return body
 
diff --git a/tempest/api/telemetry/base.py b/tempest/api/telemetry/base.py
index e840e3b..8885187 100644
--- a/tempest/api/telemetry/base.py
+++ b/tempest/api/telemetry/base.py
@@ -52,11 +52,11 @@
 
     @classmethod
     def create_alarm(cls, **kwargs):
-        resp, body = cls.telemetry_client.create_alarm(
+        body = cls.telemetry_client.create_alarm(
             name=data_utils.rand_name('telemetry_alarm'),
             type='threshold', **kwargs)
         cls.alarm_ids.append(body['alarm_id'])
-        return resp, body
+        return body
 
     @classmethod
     def create_server(cls):
@@ -100,10 +100,9 @@
         timeout = CONF.compute.build_timeout
         start = timeutils.utcnow()
         while timeutils.delta_seconds(start, timeutils.utcnow()) < timeout:
-            resp, body = self.telemetry_client.list_samples(metric, query)
-            self.assertEqual(resp.status, 200)
+            body = self.telemetry_client.list_samples(metric, query)
             if body:
-                return resp, body
+                return body
             time.sleep(CONF.compute.build_interval)
 
         raise exceptions.TimeoutException(
diff --git a/tempest/api/telemetry/test_telemetry_alarming_api.py b/tempest/api/telemetry/test_telemetry_alarming_api.py
index b45d545..97eb4eb 100644
--- a/tempest/api/telemetry/test_telemetry_alarming_api.py
+++ b/tempest/api/telemetry/test_telemetry_alarming_api.py
@@ -32,8 +32,7 @@
     @test.attr(type="gate")
     def test_alarm_list(self):
         # List alarms
-        resp, alarm_list = self.telemetry_client.list_alarms()
-        self.assertEqual(200, resp.status)
+        alarm_list = self.telemetry_client.list_alarms()
 
         # Verify created alarm in the list
         fetched_ids = [a['alarm_id'] for a in alarm_list]
@@ -47,9 +46,8 @@
     def test_create_update_get_delete_alarm(self):
         # Create an alarm
         alarm_name = data_utils.rand_name('telemetry_alarm')
-        resp, body = self.telemetry_client.create_alarm(
+        body = self.telemetry_client.create_alarm(
             name=alarm_name, type='threshold', threshold_rule=self.rule)
-        self.assertEqual(201, resp.status)
         self.assertEqual(alarm_name, body['name'])
         alarm_id = body['alarm_id']
         self.assertDictContainsSubset(self.rule, body['threshold_rule'])
@@ -59,39 +57,34 @@
                     'threshold': 70.0,
                     'period': 60}
         alarm_name = data_utils.rand_name('telemetry-alarm-update')
-        resp, body = self.telemetry_client.update_alarm(
+        body = self.telemetry_client.update_alarm(
             alarm_id,
             threshold_rule=new_rule,
             name=alarm_name,
             type='threshold')
-        self.assertEqual(200, resp.status)
         self.assertEqual(alarm_name, body['name'])
         self.assertDictContainsSubset(new_rule, body['threshold_rule'])
         # Get and verify details of an alarm after update
-        resp, body = self.telemetry_client.get_alarm(alarm_id)
-        self.assertEqual(200, resp.status)
+        body = self.telemetry_client.get_alarm(alarm_id)
         self.assertEqual(alarm_name, body['name'])
         self.assertDictContainsSubset(new_rule, body['threshold_rule'])
         # Delete alarm and verify if deleted
-        resp, _ = self.telemetry_client.delete_alarm(alarm_id)
-        self.assertEqual(204, resp.status)
+        self.telemetry_client.delete_alarm(alarm_id)
         self.assertRaises(exceptions.NotFound,
                           self.telemetry_client.get_alarm, alarm_id)
 
     @test.attr(type="gate")
     def test_set_get_alarm_state(self):
         alarm_states = ['ok', 'alarm', 'insufficient data']
-        _, alarm = self.create_alarm(threshold_rule=self.rule)
+        alarm = self.create_alarm(threshold_rule=self.rule)
         # Set alarm state and verify
         new_state =\
             [elem for elem in alarm_states if elem != alarm['state']][0]
-        resp, state = self.telemetry_client.alarm_set_state(alarm['alarm_id'],
-                                                            new_state)
-        self.assertEqual(200, resp.status)
+        _, state = self.telemetry_client.alarm_set_state(alarm['alarm_id'],
+                                                         new_state)
         self.assertEqual(new_state, state)
         # Get alarm state and verify
-        resp, state = self.telemetry_client.alarm_get_state(alarm['alarm_id'])
-        self.assertEqual(200, resp.status)
+        _, state = self.telemetry_client.alarm_get_state(alarm['alarm_id'])
         self.assertEqual(new_state, state)
 
     @test.attr(type="gate")
@@ -100,15 +93,13 @@
                 "operator": "or"}
         # Verifies alarm create
         alarm_name = data_utils.rand_name('combination_alarm')
-        resp, body = self.telemetry_client.create_alarm(name=alarm_name,
-                                                        combination_rule=rule,
-                                                        type='combination')
-        self.assertEqual(201, resp.status)
+        body = self.telemetry_client.create_alarm(name=alarm_name,
+                                                  combination_rule=rule,
+                                                  type='combination')
         self.assertEqual(alarm_name, body['name'])
         alarm_id = body['alarm_id']
         self.assertDictContainsSubset(rule, body['combination_rule'])
         # Verify alarm delete
-        resp, _ = self.telemetry_client.delete_alarm(alarm_id)
-        self.assertEqual(204, resp.status)
+        self.telemetry_client.delete_alarm(alarm_id)
         self.assertRaises(exceptions.NotFound,
                           self.telemetry_client.get_alarm, alarm_id)
diff --git a/tempest/api/telemetry/test_telemetry_notification_api.py b/tempest/api/telemetry/test_telemetry_notification_api.py
index e64cd4a..7e5d6ee 100644
--- a/tempest/api/telemetry/test_telemetry_notification_api.py
+++ b/tempest/api/telemetry/test_telemetry_notification_api.py
@@ -10,6 +10,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
 import testtools
 
 from tempest.api.telemetry import base
@@ -46,7 +47,7 @@
     @test.services("image")
     @testtools.skipIf(not CONF.image_feature_enabled.api_v1,
                       "Glance api v1 is disabled")
-    @test.skip_because(bug='1351627')
+    @decorators.skip_because(bug='1351627')
     def test_check_glance_v1_notifications(self):
         body = self.create_image(self.image_client)
         self.image_client.update_image(body['id'], data='data')
@@ -62,7 +63,7 @@
     @test.services("image")
     @testtools.skipIf(not CONF.image_feature_enabled.api_v2,
                       "Glance api v2 is disabled")
-    @test.skip_because(bug='1351627')
+    @decorators.skip_because(bug='1351627')
     def test_check_glance_v2_notifications(self):
         body = self.create_image(self.image_client_v2)
 
diff --git a/tempest/auth.py b/tempest/auth.py
index 9687905..6a92b5f 100644
--- a/tempest/auth.py
+++ b/tempest/auth.py
@@ -24,8 +24,8 @@
 
 from tempest import config
 from tempest.openstack.common import log as logging
-from tempest.services.identity.json import identity_client as json_id
-from tempest.services.identity.v3.json import identity_client as json_v3id
+from tempest.services.identity.json import token_client as json_id
+from tempest.services.identity.v3.json import token_client as json_v3id
 
 
 CONF = config.CONF
diff --git a/tempest/cli/simple_read_only/compute/test_nova.py b/tempest/cli/simple_read_only/compute/test_nova.py
index 5efeb75..aee92fa 100644
--- a/tempest/cli/simple_read_only/compute/test_nova.py
+++ b/tempest/cli/simple_read_only/compute/test_nova.py
@@ -13,13 +13,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
 from tempest_lib import exceptions
 import testtools
 
 from tempest import cli
 from tempest import config
 from tempest.openstack.common import log as logging
-import tempest.test
 
 CONF = config.CONF
 
@@ -82,7 +82,7 @@
     def test_admin_dns_domains(self):
         self.nova('dns-domains')
 
-    @tempest.test.skip_because(bug="1157349")
+    @decorators.skip_because(bug="1157349")
     def test_admin_dns_list(self):
         self.nova('dns-list')
 
@@ -120,7 +120,7 @@
     def test_admin_image_list(self):
         self.nova('image-list')
 
-    @tempest.test.skip_because(bug="1157349")
+    @decorators.skip_because(bug="1157349")
     def test_admin_interface_list(self):
         self.nova('interface-list')
 
@@ -145,7 +145,7 @@
     def test_admin_secgroup_list(self):
         self.nova('secgroup-list')
 
-    @tempest.test.skip_because(bug="1157349")
+    @decorators.skip_because(bug="1157349")
     def test_admin_secgroup_list_rules(self):
         self.nova('secgroup-list-rules')
 
diff --git a/tempest/clients.py b/tempest/clients.py
index 894bdb7..03928ba 100644
--- a/tempest/clients.py
+++ b/tempest/clients.py
@@ -72,18 +72,18 @@
 from tempest.services.database.json.versions_client import \
     DatabaseVersionsClientJSON
 from tempest.services.identity.json.identity_client import IdentityClientJSON
-from tempest.services.identity.json.identity_client import TokenClientJSON
+from tempest.services.identity.json.token_client import TokenClientJSON
 from tempest.services.identity.v3.json.credentials_client import \
     CredentialsClientJSON
 from tempest.services.identity.v3.json.endpoints_client import \
     EndPointClientJSON
 from tempest.services.identity.v3.json.identity_client import \
     IdentityV3ClientJSON
-from tempest.services.identity.v3.json.identity_client import V3TokenClientJSON
 from tempest.services.identity.v3.json.policy_client import PolicyClientJSON
 from tempest.services.identity.v3.json.region_client import RegionClientJSON
 from tempest.services.identity.v3.json.service_client import \
     ServiceClientJSON
+from tempest.services.identity.v3.json.token_client import V3TokenClientJSON
 from tempest.services.image.v1.json.image_client import ImageClientJSON
 from tempest.services.image.v2.json.image_client import ImageClientV2JSON
 from tempest.services.messaging.json.messaging_client import \
@@ -308,35 +308,53 @@
         self.credentials_client = CredentialsClientJSON(self.auth_provider)
 
     def _set_volume_clients(self):
-        self.volume_qos_client = QosSpecsClientJSON(self.auth_provider)
+        params = {
+            'service': CONF.volume.catalog_type,
+            'region': CONF.volume.region or CONF.identity.region,
+            'endpoint_type': CONF.volume.endpoint_type,
+            'build_interval': CONF.volume.build_interval,
+            'build_timeout': CONF.volume.build_timeout
+        }
+        params.update(self.default_params)
+
+        self.volume_qos_client = QosSpecsClientJSON(self.auth_provider,
+                                                    **params)
         self.volume_qos_v2_client = QosSpecsV2ClientJSON(
-            self.auth_provider)
+            self.auth_provider, **params)
         self.volume_services_v2_client = VolumesServicesV2ClientJSON(
-            self.auth_provider)
-        self.backups_client = BackupsClientJSON(self.auth_provider)
-        self.backups_v2_client = BackupsClientV2JSON(self.auth_provider)
-        self.snapshots_client = SnapshotsClientJSON(self.auth_provider)
-        self.snapshots_v2_client = SnapshotsV2ClientJSON(self.auth_provider)
-        self.volumes_client = VolumesClientJSON(self.auth_provider)
-        self.volumes_v2_client = VolumesV2ClientJSON(self.auth_provider)
-        self.volume_types_client = VolumeTypesClientJSON(self.auth_provider)
+            self.auth_provider, **params)
+        self.backups_client = BackupsClientJSON(self.auth_provider, **params)
+        self.backups_v2_client = BackupsClientV2JSON(self.auth_provider,
+                                                     **params)
+        self.snapshots_client = SnapshotsClientJSON(self.auth_provider,
+                                                    **params)
+        self.snapshots_v2_client = SnapshotsV2ClientJSON(self.auth_provider,
+                                                         **params)
+        self.volumes_client = VolumesClientJSON(self.auth_provider, **params)
+        self.volumes_v2_client = VolumesV2ClientJSON(self.auth_provider,
+                                                     **params)
+        self.volume_types_client = VolumeTypesClientJSON(self.auth_provider,
+                                                         **params)
         self.volume_services_client = VolumesServicesClientJSON(
-            self.auth_provider)
-        self.volume_hosts_client = VolumeHostsClientJSON(self.auth_provider)
+            self.auth_provider, **params)
+        self.volume_hosts_client = VolumeHostsClientJSON(self.auth_provider,
+                                                         **params)
         self.volume_hosts_v2_client = VolumeHostsV2ClientJSON(
-            self.auth_provider)
-        self.volume_quotas_client = VolumeQuotasClientJSON(self.auth_provider)
-        self.volume_quotas_v2_client = VolumeQuotasV2Client(self.auth_provider)
+            self.auth_provider, **params)
+        self.volume_quotas_client = VolumeQuotasClientJSON(self.auth_provider,
+                                                           **params)
+        self.volume_quotas_v2_client = VolumeQuotasV2Client(self.auth_provider,
+                                                            **params)
         self.volumes_extension_client = VolumeExtensionClientJSON(
-            self.auth_provider)
+            self.auth_provider, **params)
         self.volumes_v2_extension_client = VolumeV2ExtensionClientJSON(
-            self.auth_provider)
+            self.auth_provider, **params)
         self.volume_availability_zone_client = \
-            VolumeAvailabilityZoneClientJSON(self.auth_provider)
+            VolumeAvailabilityZoneClientJSON(self.auth_provider, **params)
         self.volume_v2_availability_zone_client = \
-            VolumeV2AvailabilityZoneClientJSON(self.auth_provider)
+            VolumeV2AvailabilityZoneClientJSON(self.auth_provider, **params)
         self.volume_types_v2_client = VolumeTypesV2ClientJSON(
-            self.auth_provider)
+            self.auth_provider, **params)
 
     def _set_object_storage_clients(self):
         params = {
diff --git a/tempest/cmd/cleanup_service.py b/tempest/cmd/cleanup_service.py
index a0bbb70..9c4a5dc 100644
--- a/tempest/cmd/cleanup_service.py
+++ b/tempest/cmd/cleanup_service.py
@@ -244,7 +244,7 @@
 
     def list(self):
         client = self.client
-        _, keypairs = client.list_keypairs()
+        keypairs = client.list_keypairs()
         LOG.debug("List count, %s Keypairs" % len(keypairs))
         return keypairs
 
@@ -271,7 +271,7 @@
 
     def list(self):
         client = self.client
-        _, secgrps = client.list_security_groups()
+        secgrps = client.list_security_groups()
         secgrp_del = [grp for grp in secgrps if grp['name'] != 'default']
         LOG.debug("List count, %s Security Groups" % len(secgrp_del))
         return secgrp_del
@@ -778,7 +778,7 @@
 
     def list(self):
         client = self.client
-        _, alarms = client.list_alarms()
+        alarms = client.list_alarms()
         LOG.debug("List count, %s Alarms" % len(alarms))
         return alarms
 
@@ -805,7 +805,7 @@
 
     def list(self):
         client = self.client
-        _, flavors = client.list_flavors({"is_public": None})
+        flavors = client.list_flavors({"is_public": None})
         if not self.is_save_state:
             # recreate list removing saved flavors
             flavors = [flavor for flavor in flavors if flavor['id']
diff --git a/tempest/cmd/javelin.py b/tempest/cmd/javelin.py
index 9fb982c..889b2dd 100755
--- a/tempest/cmd/javelin.py
+++ b/tempest/cmd/javelin.py
@@ -195,7 +195,14 @@
             CONF.identity.region,
             endpoint_type=CONF.telemetry.endpoint_type,
             **default_params_with_timeout_values)
-        self.volumes = volumes_client.VolumesClientJSON(_auth)
+        self.volumes = volumes_client.VolumesClientJSON(
+            _auth,
+            CONF.volume.catalog_type,
+            CONF.volume.region or CONF.identity.region,
+            endpoint_type=CONF.volume.endpoint_type,
+            build_interval=CONF.volume.build_interval,
+            build_timeout=CONF.volume.build_timeout,
+            **default_params)
         self.networks = network_client.NetworkClientJSON(
             _auth,
             CONF.network.catalog_type,
@@ -467,11 +474,10 @@
         LOG.info("checking telemetry")
         for server in self.res['servers']:
             client = client_for_user(server['owner'])
-            response, body = client.telemetry.list_samples(
+            body = client.telemetry.list_samples(
                 'instance',
                 query=('metadata.display_name', 'eq', server['name'])
             )
-            self.assertEqual(response.status, 200)
             self.assertTrue(len(body) >= 1, 'expecting at least one sample')
             self._confirm_telemetry_sample(server, body[-1])
 
@@ -782,7 +788,7 @@
 
 
 def _get_flavor_by_name(client, name):
-    r, body = client.flavors.list_flavors()
+    body = client.flavors.list_flavors()
     for flavor in body:
         if name == flavor['name']:
             return flavor
@@ -844,17 +850,14 @@
         # only create a security group if the name isn't here
         # i.e. a security group may be used by another server
         # only create a router if the name isn't here
-        r, body = client.secgroups.list_security_groups()
+        body = client.secgroups.list_security_groups()
         if any(item['name'] == secgroup['name'] for item in body):
             LOG.warning("Security group '%s' already exists" %
                         secgroup['name'])
             continue
 
-        resp, body = client.secgroups.create_security_group(
+        body = client.secgroups.create_security_group(
             secgroup['name'], secgroup['description'])
-        if not resp_ok(resp):
-            raise ValueError("Failed to create security group: [%s] %s" %
-                             (resp, body))
         secgroup_id = body['id']
         # for each security group, create the rules
         for rule in secgroup['rules']:
diff --git a/tempest/common/glance_http.py b/tempest/common/glance_http.py
index 92ed8f1..dd1448a 100644
--- a/tempest/common/glance_http.py
+++ b/tempest/common/glance_http.py
@@ -29,6 +29,7 @@
 
 import OpenSSL
 from six import moves
+from tempest_lib import exceptions as lib_exc
 
 from tempest import exceptions as exc
 from tempest.openstack.common import log as logging
@@ -164,7 +165,7 @@
         kwargs['headers'].setdefault('Content-Type', 'application/json')
         if kwargs['headers']['Content-Type'] != 'application/json':
             msg = "Only application/json content-type is supported."
-            raise exc.InvalidContentType(msg)
+            raise lib_exc.InvalidContentType(msg)
 
         if 'body' in kwargs:
             kwargs['body'] = json.dumps(kwargs['body'])
@@ -179,7 +180,7 @@
                 LOG.error('Could not decode response body as JSON')
         else:
             msg = "Only json/application content-type is supported."
-            raise exc.InvalidContentType(msg)
+            raise lib_exc.InvalidContentType(msg)
 
         return resp, body
 
diff --git a/tempest/common/service_client.py b/tempest/common/service_client.py
index dc634a1..69e25e2 100644
--- a/tempest/common/service_client.py
+++ b/tempest/common/service_client.py
@@ -69,10 +69,6 @@
             raise exceptions.Conflict(ex)
         except lib_exceptions.OverLimit as ex:
             raise exceptions.OverLimit(ex)
-        except lib_exceptions.InvalidContentType as ex:
-            raise exceptions.InvalidContentType(ex)
-        except lib_exceptions.UnprocessableEntity as ex:
-            raise exceptions.UnprocessableEntity(ex)
         # TODO(oomichi): This is just a workaround for failing gate tests
         # when separating Forbidden from Unauthorized in tempest-lib.
         # We will need to remove this translation and replace negative tests
diff --git a/tempest/config.py b/tempest/config.py
index 70f972f..c60434a 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -349,7 +349,10 @@
     cfg.BoolOpt('snapshot',
                 default=True,
                 help='Does the test environment support creating snapshot '
-                     'images of running instances?')
+                     'images of running instances?'),
+    cfg.BoolOpt('ec2_api',
+                default=True,
+                help='Does the test environment have the ec2 api running?')
 ]
 
 
diff --git a/tempest/exceptions.py b/tempest/exceptions.py
index 680b92a..7ddeeff 100644
--- a/tempest/exceptions.py
+++ b/tempest/exceptions.py
@@ -163,10 +163,6 @@
     message = "Bad request"
 
 
-class UnprocessableEntity(RestClientException):
-    message = "Unprocessable entity"
-
-
 class OverLimit(RestClientException):
     message = "Quota exceeded"
 
@@ -189,10 +185,6 @@
     message = "HTTP response header is invalid"
 
 
-class InvalidContentType(RestClientException):
-    message = "Invalid content type provided"
-
-
 class InvalidStructure(TempestException):
     message = "Invalid structure of table with details"
 
diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index 5b092c3..b1f5cce 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -160,7 +160,7 @@
             client = self.keypairs_client
         name = data_utils.rand_name(self.__class__.__name__)
         # We don't need to create a keypair by pubkey in scenario
-        resp, body = client.create_keypair(name)
+        body = client.create_keypair(name)
         self.addCleanup(client.delete_keypair, name)
         return body
 
@@ -236,7 +236,7 @@
     def _create_loginable_secgroup_rule(self, secgroup_id=None):
         _client = self.security_groups_client
         if secgroup_id is None:
-            _, sgs = _client.list_security_groups()
+            sgs = _client.list_security_groups()
             for sg in sgs:
                 if sg['name'] == 'default':
                     secgroup_id = sg['id']
@@ -263,8 +263,8 @@
         ]
         rules = list()
         for ruleset in rulesets:
-            _, sg_rule = _client.create_security_group_rule(secgroup_id,
-                                                            **ruleset)
+            sg_rule = _client.create_security_group_rule(secgroup_id,
+                                                         **ruleset)
             self.addCleanup(self.delete_wrapper,
                             _client.delete_security_group_rule,
                             sg_rule['id'])
@@ -275,7 +275,7 @@
         # Create security group
         sg_name = data_utils.rand_name(self.__class__.__name__)
         sg_desc = sg_name + " description"
-        _, secgroup = self.security_groups_client.create_security_group(
+        secgroup = self.security_groups_client.create_security_group(
             sg_name, sg_desc)
         self.assertEqual(secgroup['name'], sg_name)
         self.assertEqual(secgroup['description'], sg_desc)
diff --git a/tempest/scenario/orchestration/test_server_cfn_init.py b/tempest/scenario/orchestration/test_server_cfn_init.py
index 18b759e..6052e0b 100644
--- a/tempest/scenario/orchestration/test_server_cfn_init.py
+++ b/tempest/scenario/orchestration/test_server_cfn_init.py
@@ -12,6 +12,8 @@
 
 import json
 
+from tempest_lib import decorators
+
 from tempest import config
 from tempest import exceptions
 from tempest.openstack.common import log as logging
@@ -123,7 +125,7 @@
                                    log_console_of_servers=[server])
 
     @test.attr(type='slow')
-    @test.skip_because(bug='1374175')
+    @decorators.skip_because(bug='1374175')
     @test.services('orchestration', 'compute')
     def test_server_cfn_init(self):
         self.assign_keypair()
diff --git a/tempest/scenario/test_baremetal_basic_ops.py b/tempest/scenario/test_baremetal_basic_ops.py
index d59e31e..fd4449a 100644
--- a/tempest/scenario/test_baremetal_basic_ops.py
+++ b/tempest/scenario/test_baremetal_basic_ops.py
@@ -97,7 +97,7 @@
     def get_flavor_ephemeral_size(self):
         """Returns size of the ephemeral partition in GiB."""
         f_id = self.instance['flavor']['id']
-        _, flavor = self.flavors_client.get_flavor_details(f_id)
+        flavor = self.flavors_client.get_flavor_details(f_id)
         ephemeral = flavor.get('OS-FLV-EXT-DATA:ephemeral')
         if not ephemeral or ephemeral == 'N/A':
             return None
diff --git a/tempest/scenario/test_large_ops.py b/tempest/scenario/test_large_ops.py
index 60fd2bd..99a2023 100644
--- a/tempest/scenario/test_large_ops.py
+++ b/tempest/scenario/test_large_ops.py
@@ -74,7 +74,7 @@
         # Explicitly create secgroup to avoid cleanup at the end of testcases.
         # Since no traffic is tested, we don't need to actually add rules to
         # secgroup
-        _, secgroup = self.security_groups_client.create_security_group(
+        secgroup = self.security_groups_client.create_security_group(
             'secgroup-%s' % name, 'secgroup-desc-%s' % name)
         self.addCleanupClass(self.security_groups_client.delete_security_group,
                              secgroup['id'])
diff --git a/tempest/scenario/test_network_advanced_server_ops.py b/tempest/scenario/test_network_advanced_server_ops.py
index 194a0bd..598c6d1 100644
--- a/tempest/scenario/test_network_advanced_server_ops.py
+++ b/tempest/scenario/test_network_advanced_server_ops.py
@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
 import testtools
 
 from tempest.common.utils import data_utils
@@ -92,7 +93,7 @@
         self.servers_client.wait_for_server_status(self.server['id'], 'ACTIVE')
         self._check_network_connectivity()
 
-    @test.skip_because(bug="1323658")
+    @decorators.skip_because(bug="1323658")
     @test.services('compute', 'network')
     def test_server_connectivity_stop_start(self):
         self._setup_network_and_servers()
@@ -140,7 +141,7 @@
         self.servers_client.resume_server(self.server['id'])
         self._wait_server_status_and_check_network_connectivity()
 
-    @test.skip_because(bug="1323658")
+    @decorators.skip_because(bug="1323658")
     @testtools.skipUnless(CONF.compute_feature_enabled.resize,
                           'Resize is not available.')
     @test.services('compute', 'network')
diff --git a/tempest/scenario/test_network_basic_ops.py b/tempest/scenario/test_network_basic_ops.py
index de211fb..fc174cd 100644
--- a/tempest/scenario/test_network_basic_ops.py
+++ b/tempest/scenario/test_network_basic_ops.py
@@ -16,6 +16,7 @@
 import collections
 import re
 
+from tempest_lib import decorators
 import testtools
 
 from tempest.common.utils import data_utils
@@ -438,7 +439,7 @@
                                  act_serv=servers,
                                  trgt_serv=dns_servers))
 
-    @test.skip_because(bug="1412325")
+    @decorators.skip_because(bug="1412325")
     @testtools.skipUnless(CONF.scenario.dhcp_client,
                           "DHCP client is not available.")
     @test.attr(type='smoke')
diff --git a/tempest/scenario/test_stamp_pattern.py b/tempest/scenario/test_stamp_pattern.py
index cfc1d37..16f5283 100644
--- a/tempest/scenario/test_stamp_pattern.py
+++ b/tempest/scenario/test_stamp_pattern.py
@@ -15,6 +15,7 @@
 
 import time
 
+from tempest_lib import decorators
 import testtools
 
 from tempest.common.utils import data_utils
@@ -137,7 +138,7 @@
         got_timestamp = ssh_client.exec_command('sudo cat /mnt/timestamp')
         self.assertEqual(self.timestamp, got_timestamp)
 
-    @tempest.test.skip_because(bug="1205344")
+    @decorators.skip_because(bug="1205344")
     @testtools.skipUnless(CONF.compute_feature_enabled.snapshot,
                           'Snapshotting is not available.')
     @tempest.test.services('compute', 'network', 'volume', 'image')
diff --git a/tempest/scenario/test_swift_telemetry_middleware.py b/tempest/scenario/test_swift_telemetry_middleware.py
index e8eb45c..dce6023 100644
--- a/tempest/scenario/test_swift_telemetry_middleware.py
+++ b/tempest/scenario/test_swift_telemetry_middleware.py
@@ -71,7 +71,7 @@
             Otherwise returning False will case _check_samples to be
             called again.
             """
-            _, results = self.telemetry_client.list_samples(
+            results = self.telemetry_client.list_samples(
                 'storage.api.request')
             LOG.debug('got samples %s', results)
 
diff --git a/tempest/scenario/test_volume_boot_pattern.py b/tempest/scenario/test_volume_boot_pattern.py
index 910fd79..c8f438e 100644
--- a/tempest/scenario/test_volume_boot_pattern.py
+++ b/tempest/scenario/test_volume_boot_pattern.py
@@ -10,6 +10,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.common.utils import data_utils
 from tempest import config
 from tempest.openstack.common import log
@@ -130,7 +132,7 @@
         actual = self._get_content(ssh_client)
         self.assertEqual(expected, actual)
 
-    @test.skip_because(bug='1373513')
+    @decorators.skip_because(bug='1373513')
     @test.services('compute', 'volume', 'image')
     def test_volume_boot_pattern(self):
         keypair = self.create_keypair()
diff --git a/tempest/scenario/utils.py b/tempest/scenario/utils.py
index 7967949..f997a65 100644
--- a/tempest/scenario/utils.py
+++ b/tempest/scenario/utils.py
@@ -67,7 +67,7 @@
 
     def is_flavor_enough(self, flavor_id, image_id):
         _image = self.images_client.get_image(image_id)
-        _, _flavor = self.flavors_client.get_flavor_details(flavor_id)
+        _flavor = self.flavors_client.get_flavor_details(flavor_id)
         return self._is_flavor_enough(_flavor, _image)
 
 
@@ -134,7 +134,7 @@
         :return: a scenario with name and uuid of flavors
         """
         if not hasattr(self, '_scenario_flavors'):
-            _, flavors = self.flavors_client.list_flavors()
+            flavors = self.flavors_client.list_flavors()
             self._scenario_flavors = [
                 (self._normalize_name(f['name']), dict(flavor_ref=f['id']))
                 for f in flavors if re.search(self.flavor_pattern,
diff --git a/tempest/services/compute/json/flavors_client.py b/tempest/services/compute/json/flavors_client.py
index b42ea40..433c325 100644
--- a/tempest/services/compute/json/flavors_client.py
+++ b/tempest/services/compute/json/flavors_client.py
@@ -34,7 +34,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(common_schema.list_flavors, resp, body)
-        return resp, body['flavors']
+        return service_client.ResponseBodyList(resp, body['flavors'])
 
     def list_flavors_with_detail(self, params=None):
         url = 'flavors/detail'
@@ -44,13 +44,13 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(v2schema.list_flavors_details, resp, body)
-        return resp, body['flavors']
+        return service_client.ResponseBodyList(resp, body['flavors'])
 
     def get_flavor_details(self, flavor_id):
         resp, body = self.get("flavors/%s" % str(flavor_id))
         body = json.loads(body)
         self.validate_response(v2schema.create_get_flavor_details, resp, body)
-        return resp, body['flavor']
+        return service_client.ResponseBody(resp, body['flavor'])
 
     def create_flavor(self, name, ram, vcpus, disk, flavor_id, **kwargs):
         """Creates a new flavor or instance type."""
@@ -74,19 +74,19 @@
 
         body = json.loads(body)
         self.validate_response(v2schema.create_get_flavor_details, resp, body)
-        return resp, body['flavor']
+        return service_client.ResponseBody(resp, body['flavor'])
 
     def delete_flavor(self, flavor_id):
         """Deletes the given flavor."""
         resp, body = self.delete("flavors/{0}".format(flavor_id))
         self.validate_response(v2schema.delete_flavor, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def is_resource_deleted(self, id):
         # Did not use get_flavor_details(id) for verification as it gives
         # 200 ok even for deleted id. LP #981263
         # we can remove the loop here and use get by ID when bug gets sortedout
-        resp, flavors = self.list_flavors_with_detail()
+        flavors = self.list_flavors_with_detail()
         for flavor in flavors:
             if flavor['id'] == id:
                 return False
@@ -105,7 +105,7 @@
         body = json.loads(body)
         self.validate_response(schema_extra_specs.flavor_extra_specs,
                                resp, body)
-        return resp, body['extra_specs']
+        return service_client.ResponseBody(resp, body['extra_specs'])
 
     def get_flavor_extra_spec(self, flavor_id):
         """Gets extra Specs details of the mentioned flavor."""
@@ -113,7 +113,7 @@
         body = json.loads(body)
         self.validate_response(schema_extra_specs.flavor_extra_specs,
                                resp, body)
-        return resp, body['extra_specs']
+        return service_client.ResponseBody(resp, body['extra_specs'])
 
     def get_flavor_extra_spec_with_key(self, flavor_id, key):
         """Gets extra Specs key-value of the mentioned flavor and key."""
@@ -122,7 +122,7 @@
         body = json.loads(body)
         self.validate_response(schema_extra_specs.flavor_extra_specs_key,
                                resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def update_flavor_extra_spec(self, flavor_id, key, **kwargs):
         """Update specified extra Specs of the mentioned flavor and key."""
@@ -131,14 +131,14 @@
         body = json.loads(body)
         self.validate_response(schema_extra_specs.flavor_extra_specs_key,
                                resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def unset_flavor_extra_spec(self, flavor_id, key):
         """Unsets extra Specs from the mentioned flavor."""
         resp, body = self.delete('flavors/%s/os-extra_specs/%s' %
                                  (str(flavor_id), key))
         self.validate_response(v2schema.unset_flavor_extra_specs, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def list_flavor_access(self, flavor_id):
         """Gets flavor access information given the flavor id."""
@@ -146,7 +146,7 @@
         body = json.loads(body)
         self.validate_response(schema_access.add_remove_list_flavor_access,
                                resp, body)
-        return resp, body['flavor_access']
+        return service_client.ResponseBodyList(resp, body['flavor_access'])
 
     def add_flavor_access(self, flavor_id, tenant_id):
         """Add flavor access for the specified tenant."""
@@ -160,7 +160,7 @@
         body = json.loads(body)
         self.validate_response(schema_access.add_remove_list_flavor_access,
                                resp, body)
-        return resp, body['flavor_access']
+        return service_client.ResponseBodyList(resp, body['flavor_access'])
 
     def remove_flavor_access(self, flavor_id, tenant_id):
         """Remove flavor access from the specified tenant."""
@@ -174,4 +174,4 @@
         body = json.loads(body)
         self.validate_response(schema_access.add_remove_list_flavor_access,
                                resp, body)
-        return resp, body['flavor_access']
+        return service_client.ResponseBody(resp, body['flavor_access'])
diff --git a/tempest/services/compute/json/keypairs_client.py b/tempest/services/compute/json/keypairs_client.py
index 69dd9ae..18729c3 100644
--- a/tempest/services/compute/json/keypairs_client.py
+++ b/tempest/services/compute/json/keypairs_client.py
@@ -31,13 +31,13 @@
         # For now we shall adhere to the spec, but the spec for keypairs
         # is yet to be found
         self.validate_response(common_schema.list_keypairs, resp, body)
-        return resp, body['keypairs']
+        return service_client.ResponseBodyList(resp, body['keypairs'])
 
     def get_keypair(self, key_name):
         resp, body = self.get("os-keypairs/%s" % str(key_name))
         body = json.loads(body)
         self.validate_response(schema.get_keypair, resp, body)
-        return resp, body['keypair']
+        return service_client.ResponseBody(resp, body['keypair'])
 
     def create_keypair(self, name, pub_key=None):
         post_body = {'keypair': {'name': name}}
@@ -47,9 +47,9 @@
         resp, body = self.post("os-keypairs", body=post_body)
         body = json.loads(body)
         self.validate_response(schema.create_keypair, resp, body)
-        return resp, body['keypair']
+        return service_client.ResponseBody(resp, body['keypair'])
 
     def delete_keypair(self, key_name):
         resp, body = self.delete("os-keypairs/%s" % str(key_name))
         self.validate_response(schema.delete_keypair, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
diff --git a/tempest/services/compute/json/limits_client.py b/tempest/services/compute/json/limits_client.py
index 3a725ae..8769906 100644
--- a/tempest/services/compute/json/limits_client.py
+++ b/tempest/services/compute/json/limits_client.py
@@ -25,7 +25,7 @@
         resp, body = self.get("limits")
         body = json.loads(body)
         self.validate_response(schema.get_limit, resp, body)
-        return resp, body['limits']['absolute']
+        return service_client.ResponseBody(resp, body['limits']['absolute'])
 
     def get_specific_absolute_limit(self, absolute_limit):
         resp, body = self.get("limits")
diff --git a/tempest/services/compute/json/quotas_client.py b/tempest/services/compute/json/quotas_client.py
index f9f02a5..ea0f423 100644
--- a/tempest/services/compute/json/quotas_client.py
+++ b/tempest/services/compute/json/quotas_client.py
@@ -32,7 +32,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.quota_set, resp, body)
-        return resp, body['quota_set']
+        return service_client.ResponseBody(resp, body['quota_set'])
 
     def get_default_quota_set(self, tenant_id):
         """List the default quota set for a tenant."""
@@ -41,7 +41,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.quota_set, resp, body)
-        return resp, body['quota_set']
+        return service_client.ResponseBody(resp, body['quota_set'])
 
     def update_quota_set(self, tenant_id, user_id=None,
                          force=None, injected_file_content_bytes=None,
@@ -106,13 +106,13 @@
 
         body = json.loads(body)
         self.validate_response(schema.quota_set_update, resp, body)
-        return resp, body['quota_set']
+        return service_client.ResponseBody(resp, body['quota_set'])
 
     def delete_quota_set(self, tenant_id):
         """Delete the tenant's quota set."""
         resp, body = self.delete('os-quota-sets/%s' % str(tenant_id))
         self.validate_response(schema.delete_quota, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
 
 class QuotaClassesClientJSON(service_client.ServiceClient):
@@ -124,7 +124,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(classes_schema.quota_set, resp, body)
-        return resp, body['quota_class_set']
+        return service_client.ResponseBody(resp, body['quota_class_set'])
 
     def update_quota_class_set(self, quota_class_id, **kwargs):
         """
@@ -137,4 +137,4 @@
 
         body = json.loads(body)
         self.validate_response(classes_schema.quota_set_update, resp, body)
-        return resp, body['quota_class_set']
+        return service_client.ResponseBody(resp, body['quota_class_set'])
diff --git a/tempest/services/compute/json/security_group_default_rules_client.py b/tempest/services/compute/json/security_group_default_rules_client.py
index 5d0c16f..b370e00 100644
--- a/tempest/services/compute/json/security_group_default_rules_client.py
+++ b/tempest/services/compute/json/security_group_default_rules_client.py
@@ -43,7 +43,8 @@
         body = json.loads(body)
         self.validate_response(schema.create_get_security_group_default_rule,
                                resp, body)
-        return resp, body['security_group_default_rule']
+        rule = body['security_group_default_rule']
+        return service_client.ResponseBody(resp, rule)
 
     def delete_security_group_default_rule(self,
                                            security_group_default_rule_id):
@@ -52,7 +53,7 @@
             security_group_default_rule_id))
         self.validate_response(schema.delete_security_group_default_rule,
                                resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def list_security_group_default_rules(self):
         """List all Security Group default rules."""
@@ -60,7 +61,8 @@
         body = json.loads(body)
         self.validate_response(schema.list_security_group_default_rules,
                                resp, body)
-        return resp, body['security_group_default_rules']
+        rules = body['security_group_default_rules']
+        return service_client.ResponseBodyList(resp, rules)
 
     def get_security_group_default_rule(self, security_group_default_rule_id):
         """Return the details of provided Security Group default rule."""
@@ -69,4 +71,5 @@
         body = json.loads(body)
         self.validate_response(schema.create_get_security_group_default_rule,
                                resp, body)
-        return resp, body['security_group_default_rule']
+        rule = body['security_group_default_rule']
+        return service_client.ResponseBody(resp, rule)
diff --git a/tempest/services/compute/json/security_groups_client.py b/tempest/services/compute/json/security_groups_client.py
index 1ac52af..410ad60 100644
--- a/tempest/services/compute/json/security_groups_client.py
+++ b/tempest/services/compute/json/security_groups_client.py
@@ -33,7 +33,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_security_groups, resp, body)
-        return resp, body['security_groups']
+        return service_client.ResponseBodyList(resp, body['security_groups'])
 
     def get_security_group(self, security_group_id):
         """Get the details of a Security Group."""
@@ -41,7 +41,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.get_security_group, resp, body)
-        return resp, body['security_group']
+        return service_client.ResponseBody(resp, body['security_group'])
 
     def create_security_group(self, name, description):
         """
@@ -57,7 +57,7 @@
         resp, body = self.post('os-security-groups', post_body)
         body = json.loads(body)
         self.validate_response(schema.get_security_group, resp, body)
-        return resp, body['security_group']
+        return service_client.ResponseBody(resp, body['security_group'])
 
     def update_security_group(self, security_group_id, name=None,
                               description=None):
@@ -77,14 +77,14 @@
                               post_body)
         body = json.loads(body)
         self.validate_response(schema.update_security_group, resp, body)
-        return resp, body['security_group']
+        return service_client.ResponseBody(resp, body['security_group'])
 
     def delete_security_group(self, security_group_id):
         """Deletes the provided Security Group."""
         resp, body = self.delete(
             'os-security-groups/%s' % str(security_group_id))
         self.validate_response(schema.delete_security_group, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def create_security_group_rule(self, parent_group_id, ip_proto, from_port,
                                    to_port, **kwargs):
@@ -111,14 +111,14 @@
         resp, body = self.post(url, post_body)
         body = json.loads(body)
         self.validate_response(schema.create_security_group_rule, resp, body)
-        return resp, body['security_group_rule']
+        return service_client.ResponseBody(resp, body['security_group_rule'])
 
     def delete_security_group_rule(self, group_rule_id):
         """Deletes the provided Security Group rule."""
         resp, body = self.delete('os-security-group-rules/%s' %
                                  str(group_rule_id))
         self.validate_response(schema.delete_security_group_rule, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def list_security_group_rules(self, security_group_id):
         """List all rules for a security group."""
@@ -127,7 +127,7 @@
         self.validate_response(schema.list_security_groups, resp, body)
         for sg in body['security_groups']:
             if sg['id'] == security_group_id:
-                return resp, sg['rules']
+                return service_client.ResponseBodyList(resp, sg['rules'])
         raise exceptions.NotFound('No such Security Group')
 
     def is_resource_deleted(self, id):
diff --git a/tempest/services/identity/json/identity_client.py b/tempest/services/identity/json/identity_client.py
index a6c5049..d4f57e0 100644
--- a/tempest/services/identity/json/identity_client.py
+++ b/tempest/services/identity/json/identity_client.py
@@ -279,90 +279,3 @@
         body = json.loads(body)
         return service_client.ResponseBodyList(resp,
                                                body['extensions']['values'])
-
-
-class TokenClientJSON(IdentityClientJSON):
-
-    def __init__(self):
-        super(TokenClientJSON, self).__init__(None)
-        auth_url = CONF.identity.uri
-
-        # Normalize URI to ensure /tokens is in it.
-        if 'tokens' not in auth_url:
-            auth_url = auth_url.rstrip('/') + '/tokens'
-
-        self.auth_url = auth_url
-
-    def auth(self, user, password, tenant=None):
-        creds = {
-            'auth': {
-                'passwordCredentials': {
-                    'username': user,
-                    'password': password,
-                },
-            }
-        }
-
-        if tenant:
-            creds['auth']['tenantName'] = tenant
-
-        body = json.dumps(creds)
-        resp, body = self.post(self.auth_url, body=body)
-        self.expected_success(200, resp.status)
-
-        return service_client.ResponseBody(resp, body['access'])
-
-    def auth_token(self, token_id, tenant=None):
-        creds = {
-            'auth': {
-                'token': {
-                    'id': token_id,
-                },
-            }
-        }
-
-        if tenant:
-            creds['auth']['tenantName'] = tenant
-
-        body = json.dumps(creds)
-        resp, body = self.post(self.auth_url, body=body)
-        self.expected_success(200, resp.status)
-
-        return service_client.ResponseBody(resp, body['access'])
-
-    def request(self, method, url, extra_headers=False, headers=None,
-                body=None):
-        """A simple HTTP request interface."""
-        if headers is None:
-            headers = self.get_headers(accept_type="json")
-        elif extra_headers:
-            try:
-                headers.update(self.get_headers(accept_type="json"))
-            except (ValueError, TypeError):
-                headers = self.get_headers(accept_type="json")
-
-        resp, resp_body = self.raw_request(url, method,
-                                           headers=headers, body=body)
-        self._log_request(method, url, resp)
-
-        if resp.status in [401, 403]:
-            resp_body = json.loads(resp_body)
-            raise exceptions.Unauthorized(resp_body['error']['message'])
-        elif resp.status not in [200, 201]:
-            raise exceptions.IdentityError(
-                'Unexpected status code {0}'.format(resp.status))
-
-        if isinstance(resp_body, str):
-            resp_body = json.loads(resp_body)
-        return resp, resp_body
-
-    def get_token(self, user, password, tenant, auth_data=False):
-        """
-        Returns (token id, token data) for supplied credentials
-        """
-        body = self.auth(user, password, tenant)
-
-        if auth_data:
-            return body['token']['id'], body
-        else:
-            return body['token']['id']
diff --git a/tempest/services/identity/json/token_client.py b/tempest/services/identity/json/token_client.py
new file mode 100644
index 0000000..93936bc
--- /dev/null
+++ b/tempest/services/identity/json/token_client.py
@@ -0,0 +1,108 @@
+# Copyright 2015 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 json
+
+from tempest.common import service_client
+from tempest import config
+from tempest import exceptions
+
+CONF = config.CONF
+
+
+class TokenClientJSON(service_client.ServiceClient):
+
+    def __init__(self):
+        super(TokenClientJSON, self).__init__(None, None, None)
+        auth_url = CONF.identity.uri
+
+        # Normalize URI to ensure /tokens is in it.
+        if 'tokens' not in auth_url:
+            auth_url = auth_url.rstrip('/') + '/tokens'
+
+        self.auth_url = auth_url
+
+    def auth(self, user, password, tenant=None):
+        creds = {
+            'auth': {
+                'passwordCredentials': {
+                    'username': user,
+                    'password': password,
+                },
+            }
+        }
+
+        if tenant:
+            creds['auth']['tenantName'] = tenant
+
+        body = json.dumps(creds)
+        resp, body = self.post(self.auth_url, body=body)
+        self.expected_success(200, resp.status)
+
+        return service_client.ResponseBody(resp, body['access'])
+
+    def auth_token(self, token_id, tenant=None):
+        creds = {
+            'auth': {
+                'token': {
+                    'id': token_id,
+                },
+            }
+        }
+
+        if tenant:
+            creds['auth']['tenantName'] = tenant
+
+        body = json.dumps(creds)
+        resp, body = self.post(self.auth_url, body=body)
+        self.expected_success(200, resp.status)
+
+        return service_client.ResponseBody(resp, body['access'])
+
+    def request(self, method, url, extra_headers=False, headers=None,
+                body=None):
+        """A simple HTTP request interface."""
+        if headers is None:
+            headers = self.get_headers(accept_type="json")
+        elif extra_headers:
+            try:
+                headers.update(self.get_headers(accept_type="json"))
+            except (ValueError, TypeError):
+                headers = self.get_headers(accept_type="json")
+
+        resp, resp_body = self.raw_request(url, method,
+                                           headers=headers, body=body)
+        self._log_request(method, url, resp)
+
+        if resp.status in [401, 403]:
+            resp_body = json.loads(resp_body)
+            raise exceptions.Unauthorized(resp_body['error']['message'])
+        elif resp.status not in [200, 201]:
+            raise exceptions.IdentityError(
+                'Unexpected status code {0}'.format(resp.status))
+
+        if isinstance(resp_body, str):
+            resp_body = json.loads(resp_body)
+        return resp, resp_body
+
+    def get_token(self, user, password, tenant, auth_data=False):
+        """
+        Returns (token id, token data) for supplied credentials
+        """
+        body = self.auth(user, password, tenant)
+
+        if auth_data:
+            return body['token']['id'], body
+        else:
+            return body['token']['id']
diff --git a/tempest/services/identity/v3/json/identity_client.py b/tempest/services/identity/v3/json/identity_client.py
index 6010249..f3d9d2d 100644
--- a/tempest/services/identity/v3/json/identity_client.py
+++ b/tempest/services/identity/v3/json/identity_client.py
@@ -18,7 +18,6 @@
 
 from tempest.common import service_client
 from tempest import config
-from tempest import exceptions
 from tempest.services.identity.v3.json import base
 
 CONF = config.CONF
@@ -525,117 +524,3 @@
                                % (trust_id, role_id))
         self.expected_success(200, resp.status)
         return service_client.ResponseBody(resp, body)
-
-
-class V3TokenClientJSON(service_client.ServiceClient):
-
-    def __init__(self):
-        super(V3TokenClientJSON, self).__init__(None, None, None)
-        auth_url = CONF.identity.uri_v3
-        if not auth_url:
-            raise exceptions.InvalidConfiguration('you must specify a v3 uri '
-                                                  'if using the v3 identity '
-                                                  'api')
-        if 'auth/tokens' not in auth_url:
-            auth_url = auth_url.rstrip('/') + '/auth/tokens'
-
-        self.auth_url = auth_url
-
-    def auth(self, user=None, password=None, tenant=None, user_type='id',
-             domain=None, token=None):
-        """
-        :param user: user id or name, as specified in user_type
-        :param domain: the user and tenant domain
-        :param token: a token to re-scope.
-
-        Accepts different combinations of credentials. Restrictions:
-        - tenant and domain are only name (no id)
-        - user domain and tenant domain are assumed identical
-        - domain scope is not supported here
-        Sample sample valid combinations:
-        - token
-        - token, tenant, domain
-        - user_id, password
-        - username, password, domain
-        - username, password, tenant, domain
-        Validation is left to the server side.
-        """
-        creds = {
-            'auth': {
-                'identity': {
-                    'methods': [],
-                }
-            }
-        }
-        id_obj = creds['auth']['identity']
-        if token:
-            id_obj['methods'].append('token')
-            id_obj['token'] = {
-                'id': token
-            }
-        if user and password:
-            id_obj['methods'].append('password')
-            id_obj['password'] = {
-                'user': {
-                    'password': password,
-                }
-            }
-            if user_type == 'id':
-                id_obj['password']['user']['id'] = user
-            else:
-                id_obj['password']['user']['name'] = user
-            if domain is not None:
-                _domain = dict(name=domain)
-                id_obj['password']['user']['domain'] = _domain
-        if tenant is not None:
-            _domain = dict(name=domain)
-            project = dict(name=tenant, domain=_domain)
-            scope = dict(project=project)
-            creds['auth']['scope'] = scope
-
-        body = json.dumps(creds)
-        resp, body = self.post(self.auth_url, body=body)
-        self.expected_success(201, resp.status)
-        return service_client.ResponseBody(resp, body)
-
-    def request(self, method, url, extra_headers=False, headers=None,
-                body=None):
-        """A simple HTTP request interface."""
-        if headers is None:
-            # Always accept 'json', for xml token client too.
-            # Because XML response is not easily
-            # converted to the corresponding JSON one
-            headers = self.get_headers(accept_type="json")
-        elif extra_headers:
-            try:
-                headers.update(self.get_headers(accept_type="json"))
-            except (ValueError, TypeError):
-                headers = self.get_headers(accept_type="json")
-
-        resp, resp_body = self.raw_request(url, method,
-                                           headers=headers, body=body)
-        self._log_request(method, url, resp)
-
-        if resp.status in [401, 403]:
-            resp_body = json.loads(resp_body)
-            raise exceptions.Unauthorized(resp_body['error']['message'])
-        elif resp.status not in [200, 201, 204]:
-            raise exceptions.IdentityError(
-                'Unexpected status code {0}'.format(resp.status))
-
-        return resp, json.loads(resp_body)
-
-    def get_token(self, user, password, tenant, domain='Default',
-                  auth_data=False):
-        """
-        :param user: username
-        Returns (token id, token data) for supplied credentials
-        """
-        body = self.auth(user, password, tenant, user_type='name',
-                         domain=domain)
-
-        token = body.response.get('x-subject-token')
-        if auth_data:
-            return token, body['token']
-        else:
-            return token
diff --git a/tempest/services/identity/v3/json/token_client.py b/tempest/services/identity/v3/json/token_client.py
new file mode 100644
index 0000000..14c4a0a
--- /dev/null
+++ b/tempest/services/identity/v3/json/token_client.py
@@ -0,0 +1,135 @@
+# Copyright 2015 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 json
+
+from tempest.common import service_client
+from tempest import config
+from tempest import exceptions
+
+CONF = config.CONF
+
+
+class V3TokenClientJSON(service_client.ServiceClient):
+
+    def __init__(self):
+        super(V3TokenClientJSON, self).__init__(None, None, None)
+        auth_url = CONF.identity.uri_v3
+        if not auth_url:
+            raise exceptions.InvalidConfiguration('you must specify a v3 uri '
+                                                  'if using the v3 identity '
+                                                  'api')
+        if 'auth/tokens' not in auth_url:
+            auth_url = auth_url.rstrip('/') + '/auth/tokens'
+
+        self.auth_url = auth_url
+
+    def auth(self, user=None, password=None, tenant=None, user_type='id',
+             domain=None, token=None):
+        """
+        :param user: user id or name, as specified in user_type
+        :param domain: the user and tenant domain
+        :param token: a token to re-scope.
+
+        Accepts different combinations of credentials. Restrictions:
+        - tenant and domain are only name (no id)
+        - user domain and tenant domain are assumed identical
+        - domain scope is not supported here
+        Sample sample valid combinations:
+        - token
+        - token, tenant, domain
+        - user_id, password
+        - username, password, domain
+        - username, password, tenant, domain
+        Validation is left to the server side.
+        """
+        creds = {
+            'auth': {
+                'identity': {
+                    'methods': [],
+                }
+            }
+        }
+        id_obj = creds['auth']['identity']
+        if token:
+            id_obj['methods'].append('token')
+            id_obj['token'] = {
+                'id': token
+            }
+        if user and password:
+            id_obj['methods'].append('password')
+            id_obj['password'] = {
+                'user': {
+                    'password': password,
+                }
+            }
+            if user_type == 'id':
+                id_obj['password']['user']['id'] = user
+            else:
+                id_obj['password']['user']['name'] = user
+            if domain is not None:
+                _domain = dict(name=domain)
+                id_obj['password']['user']['domain'] = _domain
+        if tenant is not None:
+            _domain = dict(name=domain)
+            project = dict(name=tenant, domain=_domain)
+            scope = dict(project=project)
+            creds['auth']['scope'] = scope
+
+        body = json.dumps(creds)
+        resp, body = self.post(self.auth_url, body=body)
+        self.expected_success(201, resp.status)
+        return service_client.ResponseBody(resp, body)
+
+    def request(self, method, url, extra_headers=False, headers=None,
+                body=None):
+        """A simple HTTP request interface."""
+        if headers is None:
+            # Always accept 'json', for xml token client too.
+            # Because XML response is not easily
+            # converted to the corresponding JSON one
+            headers = self.get_headers(accept_type="json")
+        elif extra_headers:
+            try:
+                headers.update(self.get_headers(accept_type="json"))
+            except (ValueError, TypeError):
+                headers = self.get_headers(accept_type="json")
+
+        resp, resp_body = self.raw_request(url, method,
+                                           headers=headers, body=body)
+        self._log_request(method, url, resp)
+
+        if resp.status in [401, 403]:
+            resp_body = json.loads(resp_body)
+            raise exceptions.Unauthorized(resp_body['error']['message'])
+        elif resp.status not in [200, 201, 204]:
+            raise exceptions.IdentityError(
+                'Unexpected status code {0}'.format(resp.status))
+
+        return resp, json.loads(resp_body)
+
+    def get_token(self, user, password, tenant, domain='Default',
+                  auth_data=False):
+        """
+        :param user: username
+        Returns (token id, token data) for supplied credentials
+        """
+        body = self.auth(user, password, tenant, user_type='name',
+                         domain=domain)
+
+        token = body.response.get('x-subject-token')
+        if auth_data:
+            return token, body['token']
+        else:
+            return token
diff --git a/tempest/services/telemetry/json/telemetry_client.py b/tempest/services/telemetry/json/telemetry_client.py
index 2967cfa..dd899e4 100644
--- a/tempest/services/telemetry/json/telemetry_client.py
+++ b/tempest/services/telemetry/json/telemetry_client.py
@@ -45,8 +45,9 @@
         uri = "%s/meters/%s" % (self.uri_prefix, meter_name)
         body = self.serialize(sample_list)
         resp, body = self.post(uri, body)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def helper_list(self, uri, query=None, period=None):
         uri_dict = {}
@@ -59,8 +60,9 @@
         if uri_dict:
             uri += "?%s" % urllib.urlencode(uri_dict)
         resp, body = self.get(uri)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBodyList(resp, body)
 
     def list_resources(self, query=None):
         uri = '%s/resources' % self.uri_prefix
@@ -85,39 +87,45 @@
     def get_resource(self, resource_id):
         uri = '%s/resources/%s' % (self.uri_prefix, resource_id)
         resp, body = self.get(uri)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def get_alarm(self, alarm_id):
         uri = '%s/alarms/%s' % (self.uri_prefix, alarm_id)
         resp, body = self.get(uri)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def delete_alarm(self, alarm_id):
         uri = "%s/alarms/%s" % (self.uri_prefix, alarm_id)
         resp, body = self.delete(uri)
+        self.expected_success(204, resp.status)
         if body:
             body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def create_alarm(self, **kwargs):
         uri = "%s/alarms" % self.uri_prefix
         body = self.serialize(kwargs)
         resp, body = self.post(uri, body)
+        self.expected_success(201, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def update_alarm(self, alarm_id, **kwargs):
         uri = "%s/alarms/%s" % (self.uri_prefix, alarm_id)
         body = self.serialize(kwargs)
         resp, body = self.put(uri, body)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def alarm_get_state(self, alarm_id):
         uri = "%s/alarms/%s/state" % (self.uri_prefix, alarm_id)
         resp, body = self.get(uri)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
         return resp, body
 
@@ -125,5 +133,6 @@
         uri = "%s/alarms/%s/state" % (self.uri_prefix, alarm_id)
         body = self.serialize(state)
         resp, body = self.put(uri, body)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
         return resp, body
diff --git a/tempest/services/volume/json/admin/volume_hosts_client.py b/tempest/services/volume/json/admin/volume_hosts_client.py
index cf566f2..1cd92b7 100644
--- a/tempest/services/volume/json/admin/volume_hosts_client.py
+++ b/tempest/services/volume/json/admin/volume_hosts_client.py
@@ -17,10 +17,9 @@
 import urllib
 
 from tempest.common import service_client
-from tempest.services.volume.json import base
 
 
-class BaseVolumeHostsClientJSON(base.VolumeClient):
+class BaseVolumeHostsClientJSON(service_client.ServiceClient):
     """
     Client class to send CRUD Volume Hosts API requests to a Cinder endpoint
     """
diff --git a/tempest/services/volume/json/admin/volume_quotas_client.py b/tempest/services/volume/json/admin/volume_quotas_client.py
index 88df69f..19d320f 100644
--- a/tempest/services/volume/json/admin/volume_quotas_client.py
+++ b/tempest/services/volume/json/admin/volume_quotas_client.py
@@ -18,10 +18,9 @@
 
 from tempest.common import service_client
 from tempest.openstack.common import jsonutils
-from tempest.services.volume.json import base
 
 
-class BaseVolumeQuotasClientJSON(base.VolumeClient):
+class BaseVolumeQuotasClientJSON(service_client.ServiceClient):
     """
     Client class to send CRUD Volume Quotas API requests to a Cinder endpoint
     """
diff --git a/tempest/services/volume/json/admin/volume_services_client.py b/tempest/services/volume/json/admin/volume_services_client.py
index d258f3d..1c4433f 100644
--- a/tempest/services/volume/json/admin/volume_services_client.py
+++ b/tempest/services/volume/json/admin/volume_services_client.py
@@ -17,10 +17,9 @@
 import urllib
 
 from tempest.common import service_client
-from tempest.services.volume.json import base
 
 
-class BaseVolumesServicesClientJSON(base.VolumeClient):
+class BaseVolumesServicesClientJSON(service_client.ServiceClient):
 
     def list_services(self, params=None):
         url = 'os-services'
diff --git a/tempest/services/volume/json/admin/volume_types_client.py b/tempest/services/volume/json/admin/volume_types_client.py
index b3b4ae6..6049eb6 100644
--- a/tempest/services/volume/json/admin/volume_types_client.py
+++ b/tempest/services/volume/json/admin/volume_types_client.py
@@ -16,12 +16,13 @@
 import json
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.common import service_client
 from tempest import exceptions
-from tempest.services.volume.json import base
 
 
-class BaseVolumeTypesClientJSON(base.VolumeClient):
+class BaseVolumeTypesClientJSON(service_client.ServiceClient):
     """
     Client class to send CRUD Volume Types API requests to a Cinder endpoint
     """
@@ -40,7 +41,7 @@
                     return True
             else:
                 msg = (" resource value is either not defined or incorrect.")
-                raise exceptions.UnprocessableEntity(msg)
+                raise lib_exc.UnprocessableEntity(msg)
         except exceptions.NotFound:
             return True
         return False
diff --git a/tempest/services/volume/json/availability_zone_client.py b/tempest/services/volume/json/availability_zone_client.py
index 8a0257e..bb5e39b 100644
--- a/tempest/services/volume/json/availability_zone_client.py
+++ b/tempest/services/volume/json/availability_zone_client.py
@@ -16,10 +16,9 @@
 import json
 
 from tempest.common import service_client
-from tempest.services.volume.json import base
 
 
-class BaseVolumeAvailabilityZoneClientJSON(base.VolumeClient):
+class BaseVolumeAvailabilityZoneClientJSON(service_client.ServiceClient):
 
     def get_availability_zone_list(self):
         resp, body = self.get('os-availability-zone')
diff --git a/tempest/services/volume/json/backups_client.py b/tempest/services/volume/json/backups_client.py
index 102e823..dad5aff 100644
--- a/tempest/services/volume/json/backups_client.py
+++ b/tempest/services/volume/json/backups_client.py
@@ -18,10 +18,9 @@
 
 from tempest.common import service_client
 from tempest import exceptions
-from tempest.services.volume.json import base
 
 
-class BaseBackupsClientJSON(base.VolumeClient):
+class BaseBackupsClientJSON(service_client.ServiceClient):
     """
     Client class to send CRUD Volume backup API requests to a Cinder endpoint
     """
diff --git a/tempest/services/volume/json/base.py b/tempest/services/volume/json/base.py
deleted file mode 100644
index e6c72eb..0000000
--- a/tempest/services/volume/json/base.py
+++ /dev/null
@@ -1,33 +0,0 @@
-# Copyright 2014 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.
-
-from tempest.common import service_client
-from tempest import config
-
-CONF = config.CONF
-
-
-class VolumeClient(service_client.ServiceClient):
-    """
-    Base volume client class
-    """
-
-    def __init__(self, auth_provider):
-        super(VolumeClient, self).__init__(
-            auth_provider,
-            CONF.volume.catalog_type,
-            CONF.volume.region or CONF.identity.region,
-            endpoint_type=CONF.volume.endpoint_type,
-            build_interval=CONF.volume.build_interval,
-            build_timeout=CONF.volume.build_timeout)
diff --git a/tempest/services/volume/json/extensions_client.py b/tempest/services/volume/json/extensions_client.py
index ae79dad..8a7bce7 100644
--- a/tempest/services/volume/json/extensions_client.py
+++ b/tempest/services/volume/json/extensions_client.py
@@ -16,10 +16,9 @@
 import json
 
 from tempest.common import service_client
-from tempest.services.volume.json import base
 
 
-class BaseExtensionsClientJSON(base.VolumeClient):
+class BaseExtensionsClientJSON(service_client.ServiceClient):
 
     def list_extensions(self):
         url = 'extensions'
diff --git a/tempest/services/volume/json/qos_client.py b/tempest/services/volume/json/qos_client.py
index 32555eb..6aa56f7 100644
--- a/tempest/services/volume/json/qos_client.py
+++ b/tempest/services/volume/json/qos_client.py
@@ -15,12 +15,13 @@
 import json
 import time
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.common import service_client
 from tempest import exceptions
-from tempest.services.volume.json import base
 
 
-class BaseQosSpecsClientJSON(base.VolumeClient):
+class BaseQosSpecsClientJSON(service_client.ServiceClient):
     """Client class to send CRUD QoS API requests"""
 
     def is_resource_deleted(self, qos_id):
@@ -60,7 +61,7 @@
                     return
             else:
                 msg = (" operation value is either not defined or incorrect.")
-                raise exceptions.UnprocessableEntity(msg)
+                raise lib_exc.UnprocessableEntity(msg)
 
             if int(time.time()) - start_time >= self.build_timeout:
                 raise exceptions.TimeoutException
diff --git a/tempest/services/volume/json/snapshots_client.py b/tempest/services/volume/json/snapshots_client.py
index cd115df..100b34c 100644
--- a/tempest/services/volume/json/snapshots_client.py
+++ b/tempest/services/volume/json/snapshots_client.py
@@ -17,13 +17,12 @@
 from tempest.common import service_client
 from tempest import exceptions
 from tempest.openstack.common import log as logging
-from tempest.services.volume.json import base
 
 
 LOG = logging.getLogger(__name__)
 
 
-class BaseSnapshotsClientJSON(base.VolumeClient):
+class BaseSnapshotsClientJSON(service_client.ServiceClient):
     """Base Client class to send CRUD Volume API requests."""
 
     create_resp = 200
diff --git a/tempest/services/volume/json/volumes_client.py b/tempest/services/volume/json/volumes_client.py
index c0f81fe..d834905 100644
--- a/tempest/services/volume/json/volumes_client.py
+++ b/tempest/services/volume/json/volumes_client.py
@@ -20,12 +20,11 @@
 from tempest.common import service_client
 from tempest import config
 from tempest import exceptions
-from tempest.services.volume.json import base
 
 CONF = config.CONF
 
 
-class BaseVolumesClientJSON(base.VolumeClient):
+class BaseVolumesClientJSON(service_client.ServiceClient):
     """
     Base client class to send CRUD Volume API requests to a Cinder endpoint
     """
diff --git a/tempest/services/volume/v2/json/admin/volume_hosts_client.py b/tempest/services/volume/v2/json/admin/volume_hosts_client.py
index d631570..b93d031 100644
--- a/tempest/services/volume/v2/json/admin/volume_hosts_client.py
+++ b/tempest/services/volume/v2/json/admin/volume_hosts_client.py
@@ -21,8 +21,4 @@
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
-
-    def __init__(self, auth_provider):
-        super(VolumeHostsV2ClientJSON, self).__init__(auth_provider)
-
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/admin/volume_quotas_client.py b/tempest/services/volume/v2/json/admin/volume_quotas_client.py
index 64f4f33..1dc48cd 100644
--- a/tempest/services/volume/v2/json/admin/volume_quotas_client.py
+++ b/tempest/services/volume/v2/json/admin/volume_quotas_client.py
@@ -20,8 +20,4 @@
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
-
-    def __init__(self, auth_provider):
-        super(VolumeQuotasV2Client, self).__init__(auth_provider)
-
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/admin/volume_services_client.py b/tempest/services/volume/v2/json/admin/volume_services_client.py
index dc3c8ea..51224c5 100644
--- a/tempest/services/volume/v2/json/admin/volume_services_client.py
+++ b/tempest/services/volume/v2/json/admin/volume_services_client.py
@@ -20,7 +20,4 @@
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
-
-    def __init__(self, auth_provider):
-        super(VolumesServicesV2ClientJSON, self).__init__(auth_provider)
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/admin/volume_types_client.py b/tempest/services/volume/v2/json/admin/volume_types_client.py
index 76fa45d..24099b2 100644
--- a/tempest/services/volume/v2/json/admin/volume_types_client.py
+++ b/tempest/services/volume/v2/json/admin/volume_types_client.py
@@ -21,8 +21,4 @@
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
-
-    def __init__(self, auth_provider):
-        super(VolumeTypesV2ClientJSON, self).__init__(auth_provider)
-
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/availability_zone_client.py b/tempest/services/volume/v2/json/availability_zone_client.py
index 047ba1b..dc85634 100644
--- a/tempest/services/volume/v2/json/availability_zone_client.py
+++ b/tempest/services/volume/v2/json/availability_zone_client.py
@@ -18,9 +18,4 @@
 
 class VolumeV2AvailabilityZoneClientJSON(
         availability_zone_client.BaseVolumeAvailabilityZoneClientJSON):
-
-    def __init__(self, auth_provider):
-        super(VolumeV2AvailabilityZoneClientJSON, self).__init__(
-            auth_provider)
-
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/backups_client.py b/tempest/services/volume/v2/json/backups_client.py
index 9698075..30d9e8e 100644
--- a/tempest/services/volume/v2/json/backups_client.py
+++ b/tempest/services/volume/v2/json/backups_client.py
@@ -20,7 +20,4 @@
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
-
-    def __init__(self, auth_provider):
-        super(BackupsClientV2JSON, self).__init__(auth_provider)
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/extensions_client.py b/tempest/services/volume/v2/json/extensions_client.py
index cc5244c..8dda833 100644
--- a/tempest/services/volume/v2/json/extensions_client.py
+++ b/tempest/services/volume/v2/json/extensions_client.py
@@ -17,8 +17,4 @@
 
 
 class ExtensionsV2ClientJSON(extensions_client.BaseExtensionsClientJSON):
-
-    def __init__(self, auth_provider):
-        super(ExtensionsV2ClientJSON, self).__init__(auth_provider)
-
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/qos_client.py b/tempest/services/volume/v2/json/qos_client.py
index a734df8..d17da6d 100644
--- a/tempest/services/volume/v2/json/qos_client.py
+++ b/tempest/services/volume/v2/json/qos_client.py
@@ -16,8 +16,4 @@
 
 
 class QosSpecsV2ClientJSON(qos_client.BaseQosSpecsClientJSON):
-
-    def __init__(self, auth_provider):
-        super(QosSpecsV2ClientJSON, self).__init__(auth_provider)
-
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/snapshots_client.py b/tempest/services/volume/v2/json/snapshots_client.py
index 553176b..90580f9 100644
--- a/tempest/services/volume/v2/json/snapshots_client.py
+++ b/tempest/services/volume/v2/json/snapshots_client.py
@@ -15,9 +15,5 @@
 
 class SnapshotsV2ClientJSON(snapshots_client.BaseSnapshotsClientJSON):
     """Client class to send CRUD Volume V2 API requests."""
-
-    def __init__(self, auth_provider):
-        super(SnapshotsV2ClientJSON, self).__init__(auth_provider)
-
-        self.api_version = "v2"
-        self.create_resp = 202
+    api_version = "v2"
+    create_resp = 202
diff --git a/tempest/services/volume/v2/json/volumes_client.py b/tempest/services/volume/v2/json/volumes_client.py
index ac4342e..85ffb91 100644
--- a/tempest/services/volume/v2/json/volumes_client.py
+++ b/tempest/services/volume/v2/json/volumes_client.py
@@ -20,9 +20,5 @@
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
-
-    def __init__(self, auth_provider):
-        super(VolumesV2ClientJSON, self).__init__(auth_provider)
-
-        self.api_version = "v2"
-        self.create_resp = 202
+    api_version = "v2"
+    create_resp = 202
diff --git a/tempest/stress/actions/ssh_floating.py b/tempest/stress/actions/ssh_floating.py
index 5bc8cac..c473df6 100644
--- a/tempest/stress/actions/ssh_floating.py
+++ b/tempest/stress/actions/ssh_floating.py
@@ -92,8 +92,8 @@
         sec_grp_cli = self.manager.security_groups_client
         s_name = data_utils.rand_name('sec_grp-')
         s_description = data_utils.rand_name('desc-')
-        _, self.sec_grp = sec_grp_cli.create_security_group(s_name,
-                                                            s_description)
+        self.sec_grp = sec_grp_cli.create_security_group(s_name,
+                                                         s_description)
         create_rule = sec_grp_cli.create_security_group_rule
         create_rule(self.sec_grp['id'], 'tcp', 22, 22)
         create_rule(self.sec_grp['id'], 'icmp', -1, -1)
diff --git a/tempest/stress/actions/volume_attach_verify.py b/tempest/stress/actions/volume_attach_verify.py
index a13d890..3c052ac 100644
--- a/tempest/stress/actions/volume_attach_verify.py
+++ b/tempest/stress/actions/volume_attach_verify.py
@@ -24,7 +24,7 @@
 
     def _create_keypair(self):
         keyname = data_utils.rand_name("key")
-        _, self.key = self.manager.keypairs_client.create_keypair(keyname)
+        self.key = self.manager.keypairs_client.create_keypair(keyname)
 
     def _delete_keypair(self):
         self.manager.keypairs_client.delete_keypair(self.key['name'])
@@ -53,8 +53,8 @@
         sec_grp_cli = self.manager.security_groups_client
         s_name = data_utils.rand_name('sec_grp-')
         s_description = data_utils.rand_name('desc-')
-        _, self.sec_grp = sec_grp_cli.create_security_group(s_name,
-                                                            s_description)
+        self.sec_grp = sec_grp_cli.create_security_group(s_name,
+                                                         s_description)
         create_rule = sec_grp_cli.create_security_group_rule
         create_rule(self.sec_grp['id'], 'tcp', 22, 22)
         create_rule(self.sec_grp['id'], 'icmp', -1, -1)
diff --git a/tempest/stress/cleanup.py b/tempest/stress/cleanup.py
index b494db6..b52eca9 100644
--- a/tempest/stress/cleanup.py
+++ b/tempest/stress/cleanup.py
@@ -37,7 +37,7 @@
         except Exception:
             pass
 
-    _, keypairs = admin_manager.keypairs_client.list_keypairs()
+    keypairs = admin_manager.keypairs_client.list_keypairs()
     LOG.info("Cleanup::remove %s keypairs" % len(keypairs))
     for k in keypairs:
         try:
@@ -46,7 +46,7 @@
             pass
 
     secgrp_client = admin_manager.security_groups_client
-    _, secgrp = secgrp_client.list_security_groups({"all_tenants": True})
+    secgrp = secgrp_client.list_security_groups({"all_tenants": True})
     secgrp_del = [grp for grp in secgrp if grp['name'] != 'default']
     LOG.info("Cleanup::remove %s Security Group" % len(secgrp_del))
     for g in secgrp_del:
diff --git a/tempest/test.py b/tempest/test.py
index cc8370c..28e1e2c 100644
--- a/tempest/test.py
+++ b/tempest/test.py
@@ -39,9 +39,6 @@
 
 CONF = config.CONF
 
-# All the successful HTTP status codes from RFC 2616
-HTTP_SUCCESS = (200, 201, 202, 203, 204, 205, 206)
-
 
 def attr(*args, **kwargs):
     """A decorator which applies the  testtools attr decorator
@@ -140,35 +137,6 @@
     return decorator
 
 
-def skip_because(*args, **kwargs):
-    """A decorator useful to skip tests hitting known bugs
-
-    @param bug: bug number causing the test to skip
-    @param condition: optional condition to be True for the skip to have place
-    @param interface: skip the test if it is the same as self._interface
-    """
-    def decorator(f):
-        @functools.wraps(f)
-        def wrapper(self, *func_args, **func_kwargs):
-            skip = False
-            if "condition" in kwargs:
-                if kwargs["condition"] is True:
-                    skip = True
-            elif "interface" in kwargs:
-                if kwargs["interface"] == self._interface:
-                    skip = True
-            else:
-                skip = True
-            if "bug" in kwargs and skip is True:
-                if not kwargs['bug'].isdigit():
-                    raise ValueError('bug must be a valid bug number')
-                msg = "Skipped until Bug: %s is resolved." % kwargs["bug"]
-                raise testtools.TestCase.skipException(msg)
-            return f(self, *func_args, **func_kwargs)
-        return wrapper
-    return decorator
-
-
 def requires_ext(*args, **kwargs):
     """A decorator to skip tests if an extension is not enabled
 
diff --git a/tempest/tests/common/test_accounts.py b/tempest/tests/common/test_accounts.py
index 0800b47..f45f2cf 100644
--- a/tempest/tests/common/test_accounts.py
+++ b/tempest/tests/common/test_accounts.py
@@ -24,7 +24,7 @@
 from tempest.common import accounts
 from tempest import config
 from tempest import exceptions
-from tempest.services.identity.json import identity_client
+from tempest.services.identity.json import token_client
 from tempest.tests import base
 from tempest.tests import fake_config
 from tempest.tests import fake_identity
@@ -68,7 +68,7 @@
         return hash_list
 
     def test_get_hash(self):
-        self.stubs.Set(identity_client.TokenClientJSON, 'raw_request',
+        self.stubs.Set(token_client.TokenClientJSON, 'raw_request',
                        fake_identity._fake_v2_response)
         test_account_class = accounts.Accounts('test_name')
         hash_list = self._get_hash_list(self.test_accounts)
diff --git a/tempest/tests/common/test_service_clients.py b/tempest/tests/common/test_service_clients.py
index 8a2782d..2b31d6b 100644
--- a/tempest/tests/common/test_service_clients.py
+++ b/tempest/tests/common/test_service_clients.py
@@ -41,7 +41,8 @@
 from tempest.services.compute.json import servers_client
 from tempest.services.compute.json import services_client
 from tempest.services.compute.json import tenant_usages_client
-from tempest.services.compute.json import volumes_extensions_client
+from tempest.services.compute.json import volumes_extensions_client \
+    as compute_volumes_extensions_client
 from tempest.services.database.json import flavors_client as db_flavor_client
 from tempest.services.database.json import versions_client as db_version_client
 from tempest.services.messaging.json import messaging_client
@@ -51,6 +52,37 @@
 from tempest.services.object_storage import object_client
 from tempest.services.orchestration.json import orchestration_client
 from tempest.services.telemetry.json import telemetry_client
+from tempest.services.volume.json.admin import volume_hosts_client
+from tempest.services.volume.json.admin import volume_quotas_client
+from tempest.services.volume.json.admin import volume_services_client
+from tempest.services.volume.json.admin import volume_types_client
+from tempest.services.volume.json import availability_zone_client \
+    as volume_az_client
+from tempest.services.volume.json import backups_client
+from tempest.services.volume.json import extensions_client \
+    as volume_extensions_client
+from tempest.services.volume.json import qos_client
+from tempest.services.volume.json import snapshots_client
+from tempest.services.volume.json import volumes_client
+from tempest.services.volume.v2.json.admin import volume_hosts_client \
+    as volume_v2_hosts_client
+from tempest.services.volume.v2.json.admin import volume_quotas_client \
+    as volume_v2_quotas_client
+from tempest.services.volume.v2.json.admin import volume_services_client \
+    as volume_v2_services_client
+from tempest.services.volume.v2.json.admin import volume_types_client \
+    as volume_v2_types_client
+from tempest.services.volume.v2.json import availability_zone_client \
+    as volume_v2_az_client
+from tempest.services.volume.v2.json import backups_client \
+    as volume_v2_backups_client
+from tempest.services.volume.v2.json import extensions_client \
+    as volume_v2_extensions_client
+from tempest.services.volume.v2.json import qos_client as volume_v2_qos_client
+from tempest.services.volume.v2.json import snapshots_client \
+    as volume_v2_snapshots_client
+from tempest.services.volume.v2.json import volumes_client as \
+    volume_v2_volumes_client
 from tempest.tests import base
 
 
@@ -84,7 +116,7 @@
             servers_client.ServersClientJSON,
             services_client.ServicesClientJSON,
             tenant_usages_client.TenantUsagesClientJSON,
-            volumes_extensions_client.VolumesExtensionsClientJSON,
+            compute_volumes_extensions_client.VolumesExtensionsClientJSON,
             db_flavor_client.DatabaseFlavorsClientJSON,
             db_version_client.DatabaseVersionsClientJSON,
             messaging_client.MessagingClientJSON,
@@ -93,7 +125,28 @@
             container_client.ContainerClient,
             object_client.ObjectClient,
             orchestration_client.OrchestrationClient,
-            telemetry_client.TelemetryClientJSON]
+            telemetry_client.TelemetryClientJSON,
+            qos_client.QosSpecsClientJSON,
+            volume_hosts_client.VolumeHostsClientJSON,
+            volume_quotas_client.VolumeQuotasClientJSON,
+            volume_services_client.VolumesServicesClientJSON,
+            volume_types_client.VolumeTypesClientJSON,
+            volume_az_client.VolumeAvailabilityZoneClientJSON,
+            backups_client.BackupsClientJSON,
+            volume_extensions_client.ExtensionsClientJSON,
+            snapshots_client.SnapshotsClientJSON,
+            volumes_client.VolumesClientJSON,
+            volume_v2_hosts_client.VolumeHostsV2ClientJSON,
+            volume_v2_quotas_client.VolumeQuotasV2Client,
+            volume_v2_services_client.VolumesServicesV2ClientJSON,
+            volume_v2_types_client.VolumeTypesV2ClientJSON,
+            volume_v2_az_client.VolumeV2AvailabilityZoneClientJSON,
+            volume_v2_backups_client.BackupsClientV2JSON,
+            volume_v2_extensions_client.ExtensionsV2ClientJSON,
+            volume_v2_qos_client.QosSpecsV2ClientJSON,
+            volume_v2_snapshots_client.SnapshotsV2ClientJSON,
+            volume_v2_volumes_client.VolumesV2ClientJSON,
+        ]
 
         for client in test_clients:
             fake_string = six.text_type(random.randint(1, 0x7fffffff))
diff --git a/tempest/tests/test_auth.py b/tempest/tests/test_auth.py
index a191781..90bb8a7 100644
--- a/tempest/tests/test_auth.py
+++ b/tempest/tests/test_auth.py
@@ -21,8 +21,8 @@
 from tempest import auth
 from tempest import config
 from tempest import exceptions
-from tempest.services.identity.json import identity_client as v2_client
-from tempest.services.identity.v3.json import identity_client as v3_client
+from tempest.services.identity.json import token_client as v2_client
+from tempest.services.identity.v3.json import token_client as v3_client
 from tempest.tests import base
 from tempest.tests import fake_config
 from tempest.tests import fake_credentials
diff --git a/tempest/tests/test_credentials.py b/tempest/tests/test_credentials.py
index 1abb941..6e447d6 100644
--- a/tempest/tests/test_credentials.py
+++ b/tempest/tests/test_credentials.py
@@ -21,8 +21,8 @@
 from tempest.common import tempest_fixtures as fixtures
 from tempest import config
 from tempest import exceptions
-from tempest.services.identity.json import identity_client as v2_client
-from tempest.services.identity.v3.json import identity_client as v3_client
+from tempest.services.identity.json import token_client as v2_client
+from tempest.services.identity.v3.json import token_client as v3_client
 from tempest.tests import base
 from tempest.tests import fake_config
 from tempest.tests import fake_identity
diff --git a/tempest/tests/test_decorators.py b/tempest/tests/test_decorators.py
index 32cefd0..1f1835e 100644
--- a/tempest/tests/test_decorators.py
+++ b/tempest/tests/test_decorators.py
@@ -150,70 +150,6 @@
                                      allow_inheritance=True)
 
 
-class TestSkipBecauseDecorator(BaseDecoratorsTest):
-    def _test_skip_because_helper(self, expected_to_skip=True,
-                                  **decorator_args):
-        class TestFoo(test.BaseTestCase):
-            _interface = 'json'
-
-            @test.skip_because(**decorator_args)
-            def test_bar(self):
-                return 0
-
-        t = TestFoo('test_bar')
-        if expected_to_skip:
-            self.assertRaises(testtools.TestCase.skipException, t.test_bar)
-        else:
-            # assert that test_bar returned 0
-            self.assertEqual(TestFoo('test_bar').test_bar(), 0)
-
-    def test_skip_because_bug(self):
-        self._test_skip_because_helper(bug='12345')
-
-    def test_skip_because_bug_and_interface_match(self):
-        self._test_skip_because_helper(bug='12346', interface='json')
-
-    def test_skip_because_bug_interface_not_match(self):
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       bug='12347', interface='xml')
-
-    def test_skip_because_bug_and_condition_true(self):
-        self._test_skip_because_helper(bug='12348', condition=True)
-
-    def test_skip_because_bug_and_condition_false(self):
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       bug='12349', condition=False)
-
-    def test_skip_because_bug_condition_false_and_interface_match(self):
-        """
-        Assure that only condition will be evaluated if both parameters are
-        passed.
-        """
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       bug='12350', condition=False,
-                                       interface='json')
-
-    def test_skip_because_bug_condition_true_and_interface_not_match(self):
-        """
-        Assure that only condition will be evaluated if both parameters are
-        passed.
-        """
-        self._test_skip_because_helper(bug='12351', condition=True,
-                                       interface='xml')
-
-    def test_skip_because_bug_without_bug_never_skips(self):
-        """Never skip without a bug parameter."""
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       condition=True)
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       interface='json')
-
-    def test_skip_because_invalid_bug_number(self):
-        """Raise ValueError if with an invalid bug number"""
-        self.assertRaises(ValueError, self._test_skip_because_helper,
-                          bug='critical_bug')
-
-
 class TestRequiresExtDecorator(BaseDecoratorsTest):
     def setUp(self):
         super(TestRequiresExtDecorator, self).setUp()
diff --git a/tempest/tests/test_glance_http.py b/tempest/tests/test_glance_http.py
index c92a886..852dd4b 100644
--- a/tempest/tests/test_glance_http.py
+++ b/tempest/tests/test_glance_http.py
@@ -19,6 +19,7 @@
 
 import mock
 import six
+from tempest_lib import exceptions as lib_exc
 
 from tempest.common import glance_http
 from tempest import exceptions
@@ -57,18 +58,18 @@
 
     def test_json_request_without_content_type_header_in_response(self):
         self._set_response_fixture({}, 200, 'fake_response_body')
-        self.assertRaises(exceptions.InvalidContentType,
+        self.assertRaises(lib_exc.InvalidContentType,
                           self.client.json_request, 'GET', '/images')
 
     def test_json_request_with_xml_content_type_header_in_request(self):
-        self.assertRaises(exceptions.InvalidContentType,
+        self.assertRaises(lib_exc.InvalidContentType,
                           self.client.json_request, 'GET', '/images',
                           headers={'Content-Type': 'application/xml'})
 
     def test_json_request_with_xml_content_type_header_in_response(self):
         self._set_response_fixture({'content-type': 'application/xml'},
                                    200, 'fake_response_body')
-        self.assertRaises(exceptions.InvalidContentType,
+        self.assertRaises(lib_exc.InvalidContentType,
                           self.client.json_request, 'GET', '/images')
 
     def test_json_request_with_json_content_type_header_only_in_resp(self):
diff --git a/tempest/tests/test_tenant_isolation.py b/tempest/tests/test_tenant_isolation.py
index 58a8060..6c80496 100644
--- a/tempest/tests/test_tenant_isolation.py
+++ b/tempest/tests/test_tenant_isolation.py
@@ -21,6 +21,7 @@
 from tempest import exceptions
 from tempest.openstack.common.fixture import mockpatch
 from tempest.services.identity.json import identity_client as json_iden_client
+from tempest.services.identity.json import token_client as json_token_client
 from tempest.services.network.json import network_client as json_network_client
 from tempest.tests import base
 from tempest.tests import fake_config
@@ -35,7 +36,7 @@
         self.useFixture(fake_config.ConfigFixture())
         self.stubs.Set(config, 'TempestConfigPrivate', fake_config.FakePrivate)
         self.fake_http = fake_http.fake_httplib2(return_type=200)
-        self.stubs.Set(json_iden_client.TokenClientJSON, 'raw_request',
+        self.stubs.Set(json_token_client.TokenClientJSON, 'raw_request',
                        fake_identity._fake_v2_response)
         cfg.CONF.set_default('operator_role', 'FakeRole',
                              group='object-storage')
diff --git a/tempest/thirdparty/boto/test.py b/tempest/thirdparty/boto/test.py
index 62073bd..edd9de1 100644
--- a/tempest/thirdparty/boto/test.py
+++ b/tempest/thirdparty/boto/test.py
@@ -79,7 +79,7 @@
 
     except keystoneclient.exceptions.Unauthorized:
         EC2_CAN_CONNECT_ERROR = "AWS credentials not set," +\
-                                " faild to get them even by keystoneclient"
+                                " failed to get them even by keystoneclient"
     except Exception as exc:
         EC2_CAN_CONNECT_ERROR = str(exc)
 
@@ -96,7 +96,7 @@
         S3_CAN_CONNECT_ERROR = str(exc)
     except keystoneclient.exceptions.Unauthorized:
         S3_CAN_CONNECT_ERROR = "AWS credentials not set," +\
-                               " faild to get them even by keystoneclient"
+                               " failed to get them even by keystoneclient"
     boto_logger.logger.setLevel(level)
     return {'A_I_IMAGES_READY': A_I_IMAGES_READY,
             'S3_CAN_CONNECT_ERROR': S3_CAN_CONNECT_ERROR,
@@ -195,6 +195,12 @@
     """Recommended to use as base class for boto related test."""
 
     @classmethod
+    def skip_checks(cls):
+        super(BotoTestCase, cls).skip_checks()
+        if not CONF.compute_feature_enabled.ec2_api:
+            raise cls.skipException("The EC2 API is not available")
+
+    @classmethod
     def resource_setup(cls):
         super(BotoTestCase, cls).resource_setup()
         cls.conclusion = decision_maker()