new_contents: # -*- coding: utf-8 -*-
  '''
      :codeauthor: :email:`Bo Maryniuk <bo@suse.de>`
  '''
  
  # Import Python libs
  from __future__ import absolute_import
  
  # Import Salt Testing Libs
  from salttesting import TestCase
  from salt.cloud.clouds import openstack
  from salttesting.mock import MagicMock, patch
  from tests.unit.cloud.clouds import _preferred_ip
  
  
  class OpenstackTestCase(TestCase):
      '''
      Test case for openstack
      '''
      PRIVATE_IPS = ['0.0.0.0', '1.1.1.1', '2.2.2.2']
  
      @patch('salt.cloud.clouds.openstack.show_instance',
             MagicMock(return_value={'state': True,
                                     'public_ips': [],
                                     'private_ips': PRIVATE_IPS}))
      @patch('salt.cloud.clouds.openstack.rackconnect', MagicMock(return_value=False))
      @patch('salt.cloud.clouds.openstack.managedcloud', MagicMock(return_value=False))
      @patch('salt.cloud.clouds.openstack.preferred_ip', _preferred_ip(PRIVATE_IPS, ['0.0.0.0']))
      @patch('salt.cloud.clouds.openstack.ssh_interface', MagicMock(return_value=False))
      def test_query_node_data_filter_preferred_ip_addresses(self):
          '''
          Test if query node data is filtering out unpreferred IP addresses.
          '''
          openstack.NodeState = MagicMock()
          openstack.NodeState.RUNNING = True
          openstack.__opts__ = {}
  
          vm = {'name': None}
          data = MagicMock()
          data.public_ips = []
  
          with patch('salt.utils.cloud.is_public_ip', MagicMock(return_value=True)):
              assert openstack._query_node_data(vm, data, False).public_ips == ['0.0.0.0']
  
subject: Add initial unit test for openstack cloud module