text: # Copyright 2014 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.
  
  from tempest.api.network import base
  from tempest import config
  from tempest.lib import exceptions as lib_exc
  from tempest import test
  
  CONF = config.CONF
  
  
  class ExternalNetworksAdminNegativeTestJSON(base.BaseAdminNetworkTest):
  
      @test.attr(type=['negative'])
      @test.idempotent_id('d402ae6c-0be0-4d8e-833b-a738895d98d0')
      def test_create_port_with_precreated_floatingip_as_fixed_ip(self):
          # NOTE: External networks can be used to create both floating-ip as
          # well as instance-ip. So, creating an instance-ip with a value of a
          # pre-created floating-ip should be denied.
  
          # create a floating ip
          body = self.admin_floating_ips_client.create_floatingip(
              floating_network_id=CONF.network.public_network_id)
          created_floating_ip = body['floatingip']
          self.addCleanup(self._try_delete_resource,
                          self.admin_floating_ips_client.delete_floatingip,
                          created_floating_ip['id'])
          floating_ip_address = created_floating_ip['floating_ip_address']
          self.assertIsNotNone(floating_ip_address)
  
          # use the same value of floatingip as fixed-ip to create_port()
          fixed_ips = [{'ip_address': floating_ip_address}]
  
          # create a port which will internally create an instance-ip
          self.assertRaises(lib_exc.Conflict,
                            self.admin_ports_client.create_port,
                            network_id=CONF.network.public_network_id,
                            fixed_ips=fixed_ips)
  