test_serializers.py 文件源码

def test_serialize_invalid_length_permission_string(self):
        serializer = self.Serializer(data={'perm': 'add_user'})
        self.assertFalse(serializer.is_valid())
        self.assertTrue('perm' in serializer.errors)

        try:
            serializer.is_valid(raise_exception=True)
            self.fail('Did not raise ValidationError when serializing invalid permission '
                      'string using `raise_exception=True`')
        except serializers.ValidationError as e:
            self.assertEqual(str(e), "{'perm': ['Incorrect length. Expected permission string identifier, "
                                     "separated by punctuation. Received \"add_user\".']}")