tests: posix: add a compile-and-run-only test for syslog

/*

 * Copyright (c) 2024, Meta

 *

 * SPDX-License-Identifier: Apache-2.0

 */

#include <zephyr/posix/syslog.h>

#include <zephyr/posix/unistd.h>

#undef LOG_ERR

#include <zephyr/ztest.h>

#define N_PRIOS 8

/* avoid clashing with Zephyr's LOG_ERR() */

#define _LOG_ERR 3

ZTEST(syslog, test_syslog)

{

	int prios[N_PRIOS] = {

		LOG_EMERG,   LOG_ALERT,  LOG_CRIT, _LOG_ERR,

		LOG_WARNING, LOG_NOTICE, LOG_INFO, LOG_DEBUG,

	};

	openlog("syslog", LOG_PID | LOG_CONS | LOG_NOWAIT, LOG_LOCAL7);

	(void)setlogmask(LOG_MASK(-1));

	for (size_t i = 0; i < N_PRIOS; ++i) {

		syslog(i, "syslog priority %d", prios[i]);

	}

	closelog();

	/* yield briefly to logging thread */

	usleep(100000);

}

ZTEST_SUITE(syslog, NULL, NULL, NULL, NULL, NULL);