old_contents: # Copyright 2012 OpenStack Foundation
  # 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 testtools
  
  from tacker.tests import base
  from tacker import wsgi
  
  
  class ExpectedException(testtools.ExpectedException):
      def __enter__(self):
          return self
  
      def __exit__(self, exc_type, exc_value, traceback):
          if super(ExpectedException, self).__exit__(exc_type,
                                                     exc_value,
                                                     traceback):
              self.exception = exc_value
              return True
          return False
  
  
  def create_request(path, body, content_type, method='GET',
                     query_string=None, context=None):
      if query_string:
          url = "%s?%s" % (path, query_string)
      else:
          url = path
      req = wsgi.Request.blank(url)
      req.method = method
      req.headers = {}
      req.headers['Accept'] = content_type
      req.body = body
      if context:
          req.environ['tacker.context'] = context
      return req
  
  
  class WebTestCase(base.BaseTestCase):
      fmt = 'json'
  
      def setUp(self):
          super(WebTestCase, self).setUp()
          json_deserializer = wsgi.JSONDeserializer()
          self._deserializers = {
              'application/json': json_deserializer,
          }
  
      def deserialize(self, response):
          ctype = 'application/%s' % self.fmt
          data = self._deserializers[ctype].deserialize(response.body)['body']
          return data
  
      def serialize(self, data):
          ctype = 'application/%s' % self.fmt
          result = wsgi.Serializer().serialize(data, ctype)
          return result
  
  
  class SubDictMatch(object):
  
      def __init__(self, sub_dict):
          self.sub_dict = sub_dict
  
      def __eq__(self, super_dict):
          return all(item in super_dict.items()
                     for item in self.sub_dict.items())
  
new_contents: # Copyright 2012 OpenStack Foundation
  # 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 testtools
  
  from tacker.tests import base
  from tacker import wsgi
  
  
  class ExpectedException(testtools.ExpectedException):
      def __enter__(self):
          return self
  
      def __exit__(self, exc_type, exc_value, traceback):
          if super(ExpectedException, self).__exit__(exc_type,
                                                     exc_value,
                                                     traceback):
              self.exception = exc_value
              return True
          return False
  
  
  def create_request(path, body, content_type, method='GET',
                     query_string=None, context=None):
      if query_string:
          url = "%s?%s" % (path, query_string)
      else:
          url = path
      req = wsgi.Request.blank(url)
      req.method = method
      req.headers = {}
      req.headers['Accept'] = content_type
      req.body = body
      if context:
          req.environ['tacker.context'] = context
      return req
  
  
  class WebTestCase(base.BaseTestCase):
      fmt = 'json'
  
      def setUp(self):
          super(WebTestCase, self).setUp()
          json_deserializer = wsgi.JSONDeserializer()
          self._deserializers = {
              'application/json': json_deserializer,
          }
  
      def deserialize(self, response):
          ctype = 'application/%s' % self.fmt
          data = self._deserializers[ctype].deserialize(response.body)['body']
          return data
  
      def serialize(self, data):
          ctype = 'application/%s' % self.fmt
          result = wsgi.Serializer().serialize(data, ctype)
          return result
  
  
  class SubDictMatch(object):
  
      def __init__(self, sub_dict):
          self.sub_dict = sub_dict
  
      def __eq__(self, super_dict):
          return all(item in super_dict.items()
                     for item in self.sub_dict.items())
  
      def __ne__(self, super_dict):
          return not self.__eq__(super_dict)
  
subject: Add __ne__ built-in function