text: from __future__ import unicode_literals
  
  from django.test import tag
  
  from django_test_migrations.contrib.unittest_case import MigratorTestCase
  
  
  @tag('exclude', 'migration')
  class Migration0003UniqueFieldsTestCase(MigratorTestCase):
      migrate_from = ('file_metadata', '0002_documenttypesettings')
      migrate_to = ('file_metadata', '0003_auto_20191226_0606')
  
      def prepare(self):
          StoredDriver = self.old_state.apps.get_model(
              'file_metadata', 'StoredDriver'
          )
          StoredDriver.objects.create(
              driver_path='test.path', internal_name='test_internal_name'
          )
          StoredDriver.objects.create(
              driver_path='test.path', internal_name='test_internal_name'
          )
  
      def test_migration_0003(self):
          StoredDriver = self.new_state.apps.get_model(
              'file_metadata', 'StoredDriver'
          )
          self.assertEqual(StoredDriver.objects.count(), 1)
  