          bif = BigIntForm({'biggie': '-9223372036854775809'})
          self.assertEqual(bif.is_valid(), False)
          self.assertEqual(bif.errors, {'biggie': ['Ensure this value is greater than or equal to -9223372036854775808.']})
          bif = BigIntForm({'biggie': '9223372036854775807'})
          self.assertEqual(bif.is_valid(), True)
          bif = BigIntForm({'biggie': '9223372036854775808'})
          self.assertEqual(bif.is_valid(), False)
          self.assertEqual(bif.errors, {'biggie': ['Ensure this value is less than or equal to 9223372036854775807.']})
  
      @skipUnless(test_images, "Pillow/PIL not installed")
 
</s> remove         self.assertEqual(bif.is_valid(), False)
 </s> add         self.assertFalse(bif.is_valid()) </s> remove         self.assertEqual(bif.is_valid(), False)
 </s> add         self.assertFalse(bif.is_valid()) </s> remove         self.assertEqual(bif.is_valid(), True)
 </s> add         self.assertTrue(bif.is_valid()) </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(), False)
 </s> add         self.assertFalse(f.is_valid())
        self.assertTrue(bif.is_valid())
          bif = BigIntForm({'biggie': '-9223372036854775809'})
          self.assertEqual(bif.is_valid(), False)
          self.assertEqual(bif.errors, {'biggie': ['Ensure this value is greater than or equal to -9223372036854775808.']})
          bif = BigIntForm({'biggie': '9223372036854775807'})
        self.assertTrue(bif.is_valid())
          bif = BigIntForm({'biggie': '9223372036854775808'})
          self.assertEqual(bif.is_valid(), False)
          self.assertEqual(bif.errors, {'biggie': ['Ensure this value is less than or equal to 9223372036854775807.']})
  
      @skipUnless(test_images, "Pillow/PIL not installed")
keep keep keep keep replace keep keep keep keep keep
 Fixed #6103 -- Splitted tests in model_forms tests 
tests/model_forms/tests.py