unit/test-random.c

/*
 *
 *  Embedded Linux library
 *
 *  Copyright (C) 2015  Intel Corporation. All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <assert.h>
#include <stdio.h>

#include <ell/ell.h>

static void test_random(const void *data)
{
	uint8_t buf1[128];
	uint8_t buf2[128];
	char *str;

	assert(l_getrandom(buf1, 128));
	str = l_util_hexstring(buf1, 128);
	printf("buf1: %s\n", str);
	l_free(str);

	assert(l_getrandom(buf2, 128));
	str = l_util_hexstring(buf2, 128);
	printf("buf2: %s\n", str);
	l_free(str);

	assert(memcmp(buf1, buf2, 128));
}

int main(int argc, char *argv[])
{
	l_test_init(&argc, &argv);

	if (!l_getrandom_is_supported()) {
		printf("getrandom syscall missing, skipping...");
		goto done;
	}

	l_test_add("l_getrandom sanity check", test_random, NULL);

done:
	return l_test_run();
}