def METHOD_NAME(interval):
    """
    Wait for a certain time interval and then confirm
    that the counter didn't go up
    :param interval: the time in seconds we expect the counter not to change
    :rases TestFail: if the counter increase despite test expectation
    """
    time.sleep(interval)
    err, out = get_forward_value()
    if err or int(out) != 0:
        raise TestFail("Counter wasn't zero although forward"
                       " was inactive. Value is %s" % out)