def METHOD_NAME(self, mock_conn):
    '''
    If the status stored on database is different of new value
    read must be 0
    '''
    mock_conn = mock_conn()
    self.default_expected_params.update({
        'read': 0,
        'task_status': 'OTHER'
    })
    mock_conn.hgetall.return_value = self.default_expected_params
    self._simulate_signal()
    args = mock_conn.hmset.call_args[0]
    self.assertEqual(args[1]['read'], 0)