def METHOD_NAME(proto_ver, per_listener, username):
    conf_file = os.path.basename(__file__).replace('.py', '.conf')
    write_config(conf_file, port1, port2, per_listener)
    persistence_file = os.path.basename(__file__).replace('.py', '.db')
    try:
        os.remove(persistence_file)
    except OSError:
        pass
    acl_file = os.path.basename(__file__).replace('.py', '.acl')
    write_acl_1(acl_file, username)
    rc = 1
    keepalive = 60
    connect_packet = mosq_test.gen_connect("retain-check", keepalive=keepalive, username=username, proto_ver=proto_ver)
    connack_packet = mosq_test.gen_connack(rc=0, proto_ver=proto_ver)
    if per_listener == "true":
        u = None
    else:
        # If per listener is false, then the second client will be denied
        # unless we provide a username
        u = username
    connect2_packet = mosq_test.gen_connect("retain-recv", keepalive=keepalive, username=u, proto_ver=proto_ver)
    connack2_packet = mosq_test.gen_connack(rc=0, proto_ver=proto_ver)
    mid = 1
    publish_packet = mosq_test.gen_publish("test/topic", qos=0, payload="retained message", retain=True, proto_ver=proto_ver)
    subscribe_packet = mosq_test.gen_subscribe(mid, "test/topic", 0, proto_ver=proto_ver)
    suback_packet = mosq_test.gen_suback(mid, 0, proto_ver=proto_ver)
    broker = mosq_test.start_broker(filename=os.path.basename(__file__), use_conf=True, port=port1)
    try:
        sock = mosq_test.do_client_connect(connect_packet, connack_packet, port=port1)
        sock.send(publish_packet)
        sock.close()
        sock = mosq_test.do_client_connect(connect2_packet, connack2_packet, port=port2)
        mosq_test.do_send_receive(sock, subscribe_packet, suback_packet, "suback 1")
        mosq_test.expect_packet(sock, "publish", publish_packet)
        sock.close()
        # Remove "write" ability
        write_acl_2(acl_file, username)
        broker.terminate()
        broker.wait()
        if os.path.isfile(persistence_file) == False:
            raise FileNotFoundError("Persistence file not written")
        broker = mosq_test.start_broker(filename=os.path.basename(__file__), use_conf=True, port=port1)
        sock = mosq_test.do_client_connect(connect2_packet, connack2_packet, port=port2)
        mosq_test.do_send_receive(sock, subscribe_packet, suback_packet, "suback 2")
        # If we receive the retained message here, it is a failure.
        mosq_test.do_ping(sock)
        rc = 0
        sock.close()
    except mosq_test.TestError:
        pass
    finally:
        broker.terminate()
        broker.wait()
        os.remove(conf_file)
        os.remove(acl_file)
        try:
            os.remove(persistence_file)
        except FileNotFoundError:
            pass
        (stdo, stde) = broker.communicate()
        if rc:
            print(stde.decode('utf-8'))
            exit(rc)