def test_save_empty_token(self):
        self.access.access_token = ''
        self.access.save()
        self.assertEqual(self.access.access_token, None)

        self.access.access_token = None
        self.access.save()
        self.assertEqual(self.access.access_token, None)
Unforced overwrite of existing file fails.
dataset/ETHPy150Open mlavin/django-all-access/allaccess/tests/test_models.py/AccountAccessTestCase.test_save_empty_token--crossover with--dataset/ETHPy150Open mapbox/rasterio/tests/test_rio_helpers.py/test_fail_overwrite