def METHOD_NAME(self, file_description, group_name):
    user = fake_user()
    add_fake_group(user, group_name)
    response = self.app.post(
        reverse('data-file-list', kwargs={'version': 'v1'}),
        headers={
            'Authorization': 'Bearer {}'.format(AccessToken.for_user(user))
        },
        params=json.dumps({
            'file_description': file_description,
        }),
        content_type='application/json',
    )
    model = DataFile.objects.first()
    self.assertEqual(201, response.status_code)
    self.assertEqual(model.file_description, file_description)
    self.assertEqual([group_name], list(map(lambda m: m.name, model.groups.all())))