def testUnknown(self):
    response_dict = self._tester.QueryUsers(self._cookie, [100])
    self.assertEqual(len(response_dict['users']), 0)
Verify that non-existent user results in empty record.
dataset/ETHPy150Open viewfinderco/viewfinder/backend/www/test/query_users_test.py/QueryUsersTestCase.testUnknown