'Generate a request, invoke the view, and assert success.
The request will be a POST request from the given `user`, with the given
`fields` in the POST body. The response should have a 200 (success)
status code.'

def _test_success(self, user, fields):

    resp = self._build_and_run_request(user, fields)
    self.assertEqual(resp.status_code, 200)
