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 mock
  
  from magnum.api import expose
  from magnum.tests import base
  
  
  class TestExpose(base.BaseTestCase):
  
      @mock.patch('wsmeext.pecan.wsexpose')
      def test_expose_with_rest_content_types(self, mock_pecan):
          self.assertTrue(expose.expose(rest_content_types='json'))
          mock_pecan.assert_called_with(rest_content_types='json')
  
      @mock.patch('wsmeext.pecan.wsexpose')
      def test_expose_without_rest_content_types(self, mock_pecan):
          self.assertTrue(expose.expose())
          mock_pecan.assert_called_once_with(rest_content_types=('json',))
  
subject: Increase test coverage