def test_get_by(self):
     self.assertEqual(self.john, User.get_by(userid='john'))
     self.assertIsNone(User.get_by(firstname='blabla'))
 def test_get_by(self):
     self.assertEqual(self.john, User.get_by(userid='john'))
     self.assertIsNone(User.get_by(firstname='blabla'))