old_contents: # -*- coding: utf-8 -*-
  
  # Import Python libs
  from __future__ import absolute_import
  
  # Import Salt Testing libs
  from tests.support.case import ModuleCase
  from tests.support.unit import skipIf
  from tests.support.helpers import destructiveTest
  
  # Import Salt libs
  import salt.utils.platform
  
  
  @skipIf(not salt.utils.platform.is_windows(), 'windows test only')
  class WinDNSTest(ModuleCase):
      '''
      Test for salt.modules.win_dns_client
      '''
      @destructiveTest
      def test_add_remove_dns(self):
          '''
          Test add and removing a dns server
          '''
          dns = '8.8.8.8'
          interface = 'Ethernet'
          # add dns server
          self.assertTrue(self.run_function('win_dns_client.add_dns', [dns, interface], index=42))
  
          srvs = self.run_function('win_dns_client.get_dns_servers', interface=interface)
          self.assertIn(dns, srvs)
  
          # remove dns server
          self.assertTrue(self.run_function('win_dns_client.rm_dns', [dns], interface=interface))
  
          srvs = self.run_function('win_dns_client.get_dns_servers', interface=interface)
          self.assertNotIn(dns, srvs)
  
new_contents: # -*- coding: utf-8 -*-
  
  # Import Python libs
  from __future__ import absolute_import
  
  # Import Salt Testing libs
  from tests.support.case import ModuleCase
  from tests.support.unit import skipIf
  from tests.support.helpers import destructiveTest
  
  # Import Salt libs
  import salt.utils.platform
  
  
  @skipIf(not salt.utils.platform.is_windows(), 'windows test only')
  class WinDNSTest(ModuleCase):
      '''
      Test for salt.modules.win_dns_client
      '''
      @destructiveTest
      def test_add_remove_dns(self):
          '''
          Test add and removing a dns server
          '''
          # Get a list of interfaces on the system
          interfaces = self.run_function('network.interfaces_names')
          skipIf(interfaces.count == 0, 'This test requires a network interface')
  
          interface = interfaces[0]
          dns = '8.8.8.8'
          # add dns server
          self.assertTrue(self.run_function('win_dns_client.add_dns', [dns, interface], index=42))
  
          srvs = self.run_function('win_dns_client.get_dns_servers', interface=interface)
          self.assertIn(dns, srvs)
  
          # remove dns server
          self.assertTrue(self.run_function('win_dns_client.rm_dns', [dns], interface=interface))
  
          srvs = self.run_function('win_dns_client.get_dns_servers', interface=interface)
          self.assertNotIn(dns, srvs)
  
subject: Fix the failing dns test on Windows