/* $NetBSD: t_randomid.c,v 1.5 2015/03/07 09:59:15 isaki Exp $ */ /*- * Copyright (c) 2010 The NetBSD Foundation, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <atf-c.h> #include <sys/types.h> #include <assert.h> #include <inttypes.h> #include <randomid.h> #include <stdio.h> #include <string.h> #define PERIOD 30000 uint32_t last[65536]; ATF_TC(randomid_basic); ATF_TC_HEAD(randomid_basic, tc) { atf_tc_set_md_var(tc, "descr", "Check randomid(3)"); } ATF_TC_BODY(randomid_basic, tc) { static randomid_t ctx = NULL; uint32_t lowest, n, diff; uint16_t id; memset(last, 0, sizeof(last)); ctx = randomid_new(16, (long)3600); lowest = UINT32_MAX; for (n = 0; n < 100000; n++) { id = randomid(ctx); if (last[id] > 0) { diff = n - last[id]; if (diff <= lowest) { if (lowest != UINT32_MAX) printf("id %5d: last call at %9"PRIu32 ", current call %9"PRIu32 " (diff %5"PRIu32"), " "lowest %"PRIu32"\n", id, last[id], n, diff, lowest); ATF_REQUIRE_MSG(diff >= PERIOD, "diff (%"PRIu32") less than minimum " "period (%d)", diff, PERIOD); lowest = diff; } } last[id] = n; } } ATF_TP_ADD_TCS(tp) { ATF_TP_ADD_TC(tp, randomid_basic); return atf_no_error(); }