content: from django.test import RequestFactory, tag, TestCase
  
  from vpn.models import TunnelTermination
  from vpn.tables import TunnelTerminationTable
  
  
  @tag('regression')
  class TunnelTerminationTableTest(TestCase):
      def test_every_orderable_field_does_not_throw_exception(self):
          terminations = TunnelTermination.objects.all()
          fake_request = RequestFactory().get("/")
          disallowed = {'actions'}
  
          orderable_columns = [
              column.name for column in TunnelTerminationTable(terminations).columns
              if column.orderable and column.name not in disallowed
          ]
  
          for col in orderable_columns:
              for dir in ('-', ''):
                  table = TunnelTerminationTable(terminations)
                  table.order_by = f'{dir}{col}'
                  table.as_html(fake_request)
  