tests/lib/libc/gen/t_time.c

   1 /*      $NetBSD: t_time.c,v 1.2 2011/11/11 05:03:38 jruoho Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jukka Ruohonen.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 #include <sys/cdefs.h>
  32 __RCSID("$NetBSD: t_time.c,v 1.2 2011/11/11 05:03:38 jruoho Exp $");
  33
  34 #include <atf-c.h>
  35 #include <errno.h>
  36 #include <inttypes.h>
  37 #include <stdint.h>
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <time.h>
  41 #include <unistd.h>
  42
  43 ATF_TC(time_copy);
  44 ATF_TC_HEAD(time_copy, tc)
  45 {
  46         atf_tc_set_md_var(tc, "descr", "Test the return values of time(3)");
  47 }
  48
  49 ATF_TC_BODY(time_copy, tc)
  50 {
  51         time_t t1, t2 = 0;
  52
  53         t1 = time(&t2);
  54
  55         if (t1 != t2)
  56                 atf_tc_fail("incorrect return values from time(3)");
  57 }
  58
  59 ATF_TC(time_mono);
  60 ATF_TC_HEAD(time_mono, tc)
  61 {
  62         atf_tc_set_md_var(tc, "descr", "Test monotonicity of time(3)");
  63 }
  64
  65 ATF_TC_BODY(time_mono, tc)
  66 {
  67         const size_t maxiter = 10;
  68         time_t t1, t2;
  69         size_t i;
  70
  71         for (i = 0; i < maxiter; i++) {
  72
  73                 t1 = time(NULL);
  74                 (void)sleep(1);
  75                 t2 = time(NULL);
  76
  77                 (void)fprintf(stderr, "%"PRId64" vs. %"PRId64"\n",
  78                     (int64_t)t1, (int64_t)t2);
  79
  80                 if (t1 >= t2)
  81                         atf_tc_fail("time(3) is not monotonic");
  82         }
  83 }
  84
  85 ATF_TC(time_timeofday);
  86 ATF_TC_HEAD(time_timeofday, tc)
  87 {
  88         atf_tc_set_md_var(tc, "descr", "Test time(3) vs. gettimeofday(2)");
  89 }
  90
  91 ATF_TC_BODY(time_timeofday, tc)
  92 {
  93         struct timeval tv = { 0, 0 };
  94         time_t t;
  95
  96         t = time(NULL);
  97         ATF_REQUIRE(gettimeofday(&tv, NULL) == 0);
  98
  99         (void)fprintf(stderr, "%"PRId64" vs. %"PRId64"\n",
 100             (int64_t)t, (int64_t)tv.tv_sec);
 101
 102         if (t != tv.tv_sec)
 103                 atf_tc_fail("time(3) and gettimeofday(2) differ");
 104 }
 105
 106 ATF_TP_ADD_TCS(tp)
 107 {
 108
 109         ATF_TP_ADD_TC(tp, time_copy);
 110         ATF_TP_ADD_TC(tp, time_mono);
 111         ATF_TP_ADD_TC(tp, time_timeofday);
 112
 113         return atf_no_error();
 114 }