'When performing an update, the existing instance does not count
as a match against uniqueness.'

def test_updated_instance_excluded_from_unique_together(self):

    data = {'race_name': 'example', 'position': 1}
    serializer = UniquenessTogetherSerializer(self.instance, data=data)
    assert serializer.is_valid()
    assert (serializer.validated_data == {'race_name': 'example', 'position': 1})
