def test_get_file(self):
        mixin = views.DownloadMixin()
        with self.assertRaises(NotImplementedError):
            mixin.get_file()
DownloadMixin.get_file() raise NotImplementedError.
dataset/ETHPy150Open benoitbryon/django-downloadview/tests/views.py/DownloadMixinTestCase.test_get_file