'Posting json to /json/users/me/pointer which does not contain a pointer key/value pair
returns a 400 and error message.'

def test_missing_pointer(self):

    self.login(self.example_email('hamlet'))
    self.assertEqual(self.example_user('hamlet').pointer, (-1))
    result = self.client_post('/json/users/me/pointer', {'foo': 1})
    self.assert_json_error(result, "Missing    'pointer'    argument")
    self.assertEqual(self.example_user('hamlet').pointer, (-1))
