      article = models.TextField()
      categories = models.ManyToManyField(Category, blank=True)
      status = models.PositiveIntegerField(choices=ARTICLE_STATUS, blank=True, null=True)
  
      def save(self):
          if not self.id:
              self.created = datetime.date.today()
          return super(Article, self).save()
  
      def __str__(self):
 
</s> remove         return super(Article, self).save()
 </s> add         return super(Article, self).save(*args, **kwargs) </s> remove class OldFormForXTests(TestCase):
 </s> add class ModelFormBasicTests(TestCase):
    def create_basic_data(self):
        self.c1 = Category.objects.create(
            name="Entertainment", slug="entertainment", url="entertainment")
        self.c2 = Category.objects.create(
            name="It's a test", slug="its-test", url="test")
        self.c3 = Category.objects.create(
            name="Third test", slug="third-test", url="third")
        self.w_royko = Writer.objects.create(name='Mike Royko')
        self.w_woodward = Writer.objects.create(name='Bob Woodward')
 </s> remove         f = TextFileForm(
            data={'description': 'Assistance'},
            files={'file': SimpleUploadedFile('test3.txt', b'hello world')})
        self.assertEqual(f.is_valid(), True)
        instance = f.save()
        self.assertEqual(instance.file.name, 'tests/test3.txt')

        # Delete the current file since this is not done by Django.
        instance.file.delete()
        instance.delete()

 </s> add  </s> remove         self.assertEqual(f.is_valid(), True)
 </s> add         self.assertTrue(f.is_valid())
    def save(self, *args, **kwargs):
      article = models.TextField()
      categories = models.ManyToManyField(Category, blank=True)
      status = models.PositiveIntegerField(choices=ARTICLE_STATUS, blank=True, null=True)
  
    def save(self, *args, **kwargs):
          if not self.id:
              self.created = datetime.date.today()
          return super(Article, self).save()
  
      def __str__(self):
keep keep keep keep replace keep keep keep keep keep
 Fixed #6103 -- Splitted tests in model_forms tests 
tests/model_forms/models.py