new_contents: #    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 httpretty
  
  from keystoneclient.tests.v2_0 import utils
  from keystoneclient.v2_0 import extensions
  
  
  class ExtensionTests(utils.TestCase):
      def setUp(self):
          super(ExtensionTests, self).setUp()
          self.TEST_EXTENSIONS = {
              'extensions': {
                  "values": [
                      {
                          'name': 'OpenStack Keystone User CRUD',
                          'namespace': 'http://docs.openstack.org/'
                          'identity/api/ext/OS-KSCRUD/v1.0',
                          'updated': '2013-07-07T12:00:0-00:00',
                          'alias': 'OS-KSCRUD',
                          'description':
                          'OpenStack extensions to Keystone v2.0 API'
                          ' enabling User Operations.',
                          'links':
                          '[{"href":'
                          '"https://github.com/openstack/identity-api", "type":'
                          ' "text/html", "rel": "describedby"}]',
                      },
                      {
                          'name': 'OpenStack EC2 API',
                          'namespace': 'http://docs.openstack.org/'
                          'identity/api/ext/OS-EC2/v1.0',
                          'updated': '2013-09-07T12:00:0-00:00',
                          'alias': 'OS-EC2',
                          'description': 'OpenStack EC2 Credentials backend.',
                          'links': '[{"href":'
                          '"https://github.com/openstack/identity-api", "type":'
                          ' "text/html", "rel": "describedby"}]',
                      }
                  ]
              }
          }
  
      @httpretty.activate
      def test_list(self):
          self.stub_url(httpretty.GET, ['extensions'], json=self.TEST_EXTENSIONS)
          extensions_list = self.client.extensions.list()
          self.assertEqual(2, len(extensions_list))
          for extension in extensions_list:
              self.assertIsInstance(extension, extensions.Extension)
              self.assertIsNotNone(extension.alias)
              self.assertIsNotNone(extension.description)
              self.assertIsNotNone(extension.links)
              self.assertIsNotNone(extension.name)
              self.assertIsNotNone(extension.namespace)
              self.assertIsNotNone(extension.updated)
  
subject: Add support for extensions-list