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_servers_negative.py b/tempest/api/compute/admin/test_servers_negative.py
index 2f0af72..345d340 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)
@@ -68,9 +68,9 @@
         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,
@@ -90,9 +90,9 @@
             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/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/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/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/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/cmd/cleanup_service.py b/tempest/cmd/cleanup_service.py
index a0bbb70..dbffc55 100644
--- a/tempest/cmd/cleanup_service.py
+++ b/tempest/cmd/cleanup_service.py
@@ -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..f4e749b 100755
--- a/tempest/cmd/javelin.py
+++ b/tempest/cmd/javelin.py
@@ -782,7 +782,7 @@
 
 
 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
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/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'])