Home | History | Annotate | Line # | Download | only in time 
      1 /* $NetBSD: t_mktime.c,v 1.6 2017/10/27 00:55:27 kre Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <atf-c.h>
     30 
     31 #include <err.h>
     32 #include <errno.h>
     33 #include <string.h>
     34 #include <time.h>
     35 
     36 ATF_TC(localtime_r_gmt);
     37 ATF_TC_HEAD(localtime_r_gmt, tc)
     38 {
     39 	atf_tc_set_md_var(tc, "descr", "Test that localtime_r(3) "
     40 	    "returns localtime, not GMT (PR lib/28324)");
     41 }
     42 
     43 ATF_TC_BODY(localtime_r_gmt, tc)
     44 {
     45 	struct tm *t;
     46 	struct tm tt;
     47 	time_t x;
     48 
     49 	x = time(NULL);
     50 	localtime_r(&x, &tt);
     51 	t = localtime(&x);
     52 
     53 	if (t->tm_sec != tt.tm_sec || t->tm_min != tt.tm_min ||
     54 	    t->tm_hour != tt.tm_hour || t->tm_mday != tt.tm_mday)
     55 		atf_tc_fail("inconsistencies between "
     56 		    "localtime(3) and localtime_r(3)");
     57 }
     58 
     59 ATF_TC(mktime_negyear);
     60 ATF_TC_HEAD(mktime_negyear, tc)
     61 {
     62 	atf_tc_set_md_var(tc, "descr", "Test mktime(3) with negative year");
     63 }
     64 
     65 ATF_TC_BODY(mktime_negyear, tc)
     66 {
     67 	struct tm tms;
     68 	time_t t;
     69 
     70 	(void)memset(&tms, 0, sizeof(tms));
     71 	tms.tm_year = -1;
     72 	tms.tm_mday = 1;
     73 
     74 	errno = 0;
     75 	t = mktime(&tms);
     76 	ATF_REQUIRE(t != (time_t)-1);
     77 }
     78 
     79 ATF_TC(timegm_epoch);
     80 ATF_TC_HEAD(timegm_epoch, tc)
     81 {
     82 	atf_tc_set_md_var(tc, "descr", "Test timegm(3) close to the epoch");
     83 }
     84 
     85 ATF_TC_BODY(timegm_epoch, tc)
     86 {
     87 	struct tm tms;
     88 	time_t t;
     89 
     90 	/* midnight on 1 Jan 1970 */
     91 	(void)memset(&tms, 0, sizeof(tms));
     92 	errno = 0;
     93 	tms.tm_year = 1970 - 1900;
     94 	tms.tm_mday = 1;
     95 	t = timegm(&tms);
     96 	ATF_REQUIRE(t == (time_t)0);
     97 
     98 	/* one second after midnight on 1 Jan 1970 */
     99 	(void)memset(&tms, 0, sizeof(tms));
    100 	errno = 0;
    101 	tms.tm_year = 1970 - 1900;
    102 	tms.tm_mday = 1;
    103 	tms.tm_sec = 1;
    104 	t = timegm(&tms);
    105 	ATF_REQUIRE(t == (time_t)1);
    106 
    107 	/*
    108 	 * 1969-12-31 23:59:59 = one second before the epoch.
    109 	 * Result should be -1 with errno = 0.
    110 	 */
    111 	(void)memset(&tms, 0, sizeof(tms));
    112 	errno = 0;
    113 	tms.tm_year = 1969 - 1900;
    114 	tms.tm_mon = 12 - 1;
    115 	tms.tm_mday = 31;
    116 	tms.tm_hour = 23;
    117 	tms.tm_min = 59;
    118 	tms.tm_sec = 59;
    119 	t = timegm(&tms);
    120 	ATF_REQUIRE(t == (time_t)-1);
    121 	/* ATF_REQUIRE(errno == 0); does not work, errno is kept clear */
    122 
    123 	/*
    124 	 * Another way of getting one second before the epoch:
    125 	 * Set date to 1 Jan 1970, and time to -1 second.
    126 	 */
    127 	(void)memset(&tms, 0, sizeof(tms));
    128 	errno = 0;
    129 	tms.tm_year = 1970 - 1900;
    130 	tms.tm_mday = 1;
    131 	tms.tm_sec = -1;
    132 	t = timegm(&tms);
    133 	ATF_REQUIRE(t == (time_t)-1);
    134 
    135 	/*
    136 	 * Two seconds before the epoch.
    137 	 */
    138 	(void)memset(&tms, 0, sizeof(tms));
    139 	errno = 0;
    140 	tms.tm_year = 1970 - 1900;
    141 	tms.tm_mday = 1;
    142 	tms.tm_sec = -2;
    143 	t = timegm(&tms);
    144 	ATF_REQUIRE(t == (time_t)-2);
    145 
    146 }
    147 
    148 
    149 ATF_TP_ADD_TCS(tp)
    150 {
    151 
    152 	ATF_TP_ADD_TC(tp, localtime_r_gmt);
    153 	ATF_TP_ADD_TC(tp, mktime_negyear);
    154 	ATF_TP_ADD_TC(tp, timegm_epoch);
    155 
    156 	return atf_no_error();
    157 }
    158