new_contents: # Copyright 2017 FiberHome Telecommunication Technologies CO.,LTD
  # 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.lib.services.volume.v2 import extensions_client
  from tempest.tests.lib import fake_auth_provider
  from tempest.tests.lib.services import base
  
  
  class TestExtensionsClient(base.BaseServiceTest):
  
      FAKE_EXTENSION_LIST = {
          "extensions": [
              {
                  "updated": "2012-03-12T00:00:00+00:00",
                  "name": "QuotaClasses",
                  "links": [],
                  "namespace": "fake-namespace-1",
                  "alias": "os-quota-class-sets",
                  "description": "Quota classes management support."
              },
              {
                  "updated": "2013-05-29T00:00:00+00:00",
                  "name": "VolumeTransfer",
                  "links": [],
                  "namespace": "fake-namespace-2",
                  "alias": "os-volume-transfer",
                  "description": "Volume transfer management support."
              },
              {
                  "updated": "2014-02-10T00:00:00+00:00",
                  "name": "VolumeManage",
                  "links": [],
                  "namespace": "fake-namespace-3",
                  "alias": "os-volume-manage",
                  "description": "Manage existing backend storage by Cinder."
              }
          ]
      }
  
      def setUp(self):
          super(TestExtensionsClient, self).setUp()
          fake_auth = fake_auth_provider.FakeAuthProvider()
          self.client = extensions_client.ExtensionsClient(fake_auth,
                                                           'volume',
                                                           'regionOne')
  
      def _test_list_extensions(self, bytes_body=False):
          self.check_service_client_function(
              self.client.list_extensions,
              'tempest.lib.common.rest_client.RestClient.get',
              self.FAKE_EXTENSION_LIST,
              bytes_body)
  
      def test_list_extensions_with_str_body(self):
          self._test_list_extensions()
  
      def test_list_extensions_with_bytes_body(self):
          self._test_list_extensions(bytes_body=True)
  
subject: Add unit test for volume extensions client