'Test username cannot be more than 30 characters long.'

def test_long_username(self):

    self.url_params['username'] = ('username' * 4)
    response = self.client.post(self.url, self.url_params)
    self.assertEqual(response.status_code, 400)
    obj = json.loads(response.content)
    self.assertEqual(obj['value'], USERNAME_BAD_LENGTH_MSG)
