text: # Copyright 2015 Hewlett Packard Enterprise Development Company LP
  #
  # 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 unittest import mock
  
  from oslo_utils import uuidutils
  
  from octavia.amphorae.backends.agent.api_server import keepalivedlvs
  from octavia.amphorae.backends.agent.api_server import util
  from octavia.tests.unit import base
  
  
  class KeepalivedLvsTestCase(base.TestCase):
      FAKE_ID = uuidutils.generate_uuid()
  
      def setUp(self):
          super().setUp()
          self.test_keepalivedlvs = keepalivedlvs.KeepalivedLvs()
  
      @mock.patch.object(keepalivedlvs, "webob")
      @mock.patch('os.path.exists')
      def test_delete_lvs_listener_not_exist(self, m_exist, m_webob):
          m_exist.return_value = False
          self.test_keepalivedlvs.delete_lvs_listener(self.FAKE_ID)
          calls = [
              mock.call(
                  json=dict(message='UDP Listener Not Found',
                            details="No UDP listener with UUID: "
                                    "{0}".format(self.FAKE_ID)), status=404),
              mock.call(json={'message': 'OK'})
          ]
          m_webob.Response.assert_has_calls(calls)
  
      @mock.patch('octavia.amphorae.backends.agent.api_server.util.'
                  'get_os_init_system')
      @mock.patch('octavia.amphorae.backends.agent.api_server.util.'
                  'get_keepalivedlvs_pid')
      @mock.patch('subprocess.check_output')
      @mock.patch('os.remove')
      @mock.patch('os.path.exists')
      def test_delete_lvs_listener_unsupported_sysinit(self, m_exist, m_remove,
                                                       m_check_output, mget_pid,
                                                       m_init_sys):
          m_exist.return_value = True
          mget_pid.return_value = '0'
          self.assertRaises(
              util.UnknownInitError,
              self.test_keepalivedlvs.delete_lvs_listener,
              self.FAKE_ID)
  