old_contents: from django.test import TestCase
  
  # Create your tests here.
  
new_contents: from django.test import TestCase
  from .models import Board
  
  
  class BoardTest(TestCase):
      def test_slugs(self):
          names = ['Birds & Bees', 'TheWatchtower',
                   'Cooking', 'We Love Cats!', 'The A As']
          slugs = ['birdsandbees', 'thewatchtower',
                   'cooking', 'welovecats', 'theaas']
  
          for name, slug in zip(names, slugs):
              board = Board(name=name,
                            description='test')
              board.full_clean()
              board.save()
              self.assertEquals(board.slug, slug,
                                msg=f'Expected "{name}" to be slugified to "{slug}" but got "{board.slug}"')
  
subject: add test for board model.