old_contents: from django.test import TestCase
  from unittest import skipIf
  
  from django.conf import settings
  
  from geotrek.core.factories import PathFactory
  from geotrek.signage.factories import SignageFactory, SealingFactory, BladeTypeFactory, BladeFactory
  from geotrek.infrastructure.factories import InfrastructureFactory
  from django.contrib.gis.geos import LineString, Point
  
  
  class SealingModelTest(TestCase):
      def test_sealing_value(self):
          sealing = SealingFactory.create(label='sealing_1', structure=None)
          self.assertEqual(str(sealing), 'sealing_1')
  
  
  class BladeTypeModelTest(TestCase):
      def test_bladetype_value(self):
          type = BladeTypeFactory.create(label='type_1', structure=None)
          self.assertEqual(str(type), 'type_1')
  
  
  class BladeModelTest(TestCase):
      def test_set_topology_other_error(self):
          blade = BladeFactory.create()
          infra = InfrastructureFactory.create()
          with self.assertRaisesRegexp(ValueError, "Expecting a signage"):
              blade.set_topology(infra)
  
new_contents: from django.test import TestCase
  
  from geotrek.signage.factories import SealingFactory, BladeTypeFactory, BladeFactory
  from geotrek.infrastructure.factories import InfrastructureFactory
  
  
  class SealingModelTest(TestCase):
      def test_sealing_value(self):
          sealing = SealingFactory.create(label='sealing_1', structure=None)
          self.assertEqual(str(sealing), 'sealing_1')
  
  
  class BladeTypeModelTest(TestCase):
      def test_bladetype_value(self):
          type = BladeTypeFactory.create(label='type_1', structure=None)
          self.assertEqual(str(type), 'type_1')
  
  
  class BladeModelTest(TestCase):
      def test_set_topology_other_error(self):
          blade = BladeFactory.create()
          infra = InfrastructureFactory.create()
          with self.assertRaisesRegexp(ValueError, "Expecting a signage"):
              blade.set_topology(infra)
  
subject: remove unused imports