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t_mktime.c revision 1.4 
      1 /* $NetBSD: t_mktime.c,v 1.4 2012/01/07 15:05:22 martin 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(mktime_negyear);
     37 
     38 ATF_TC_HEAD(mktime_negyear, tc)
     39 {
     40 
     41 	atf_tc_set_md_var(tc, "descr", "Test mktime(3) with negative year");
     42 }
     43 
     44 ATF_TC_BODY(mktime_negyear, tc)
     45 {
     46 	struct tm tms;
     47 	time_t t;
     48 
     49 	(void)memset(&tms, 0, sizeof(tms));
     50 	tms.tm_year = ~0;
     51 
     52 	errno = 0;
     53 	t = mktime(&tms);
     54 	ATF_REQUIRE_ERRNO(0, t != (time_t)-1);
     55 }
     56 
     57 ATF_TC(timegm_epoch);
     58 
     59 ATF_TC_HEAD(timegm_epoch, tc)
     60 {
     61 
     62 	atf_tc_set_md_var(tc, "descr", "Test timegm(3) close to the epoch");
     63 }
     64 
     65 ATF_TC_BODY(timegm_epoch, tc)
     66 {
     67 	struct tm tms;
     68 	time_t t;
     69 
     70 	/* midnight on 1 Jan 1970 */
     71 	(void)memset(&tms, 0, sizeof(tms));
     72 	errno = 0;
     73 	tms.tm_year = 1970 - 1900;
     74 	tms.tm_mday = 1;
     75 	t = timegm(&tms);
     76 	ATF_REQUIRE_ERRNO(0, t == (time_t)0);
     77 
     78 	/* one second after midnight on 1 Jan 1970 */
     79 	(void)memset(&tms, 0, sizeof(tms));
     80 	errno = 0;
     81 	tms.tm_year = 1970 - 1900;
     82 	tms.tm_mday = 1;
     83 	tms.tm_sec = 1;
     84 	t = timegm(&tms);
     85 	ATF_REQUIRE_ERRNO(0, t == (time_t)1);
     86 
     87 	/*
     88 	 * 1969-12-31 23:59:59 = one second before the epoch.
     89 	 * Result should be -1 with errno = 0.
     90 	 */
     91 	(void)memset(&tms, 0, sizeof(tms));
     92 	errno = 0;
     93 	tms.tm_year = 1969 - 1900;
     94 	tms.tm_mon = 12 - 1;
     95 	tms.tm_mday = 31;
     96 	tms.tm_hour = 23;
     97 	tms.tm_min = 59;
     98 	tms.tm_sec = 59;
     99 	t = timegm(&tms);
    100 	ATF_REQUIRE_ERRNO(0, t == (time_t)-1);
    101 
    102 	/*
    103 	 * Another way of getting one second before the epoch:
    104 	 * Set date to 1 Jan 1970, and time to -1 second.
    105 	 */
    106 	(void)memset(&tms, 0, sizeof(tms));
    107 	errno = 0;
    108 	tms.tm_year = 1970 - 1900;
    109 	tms.tm_mday = 1;
    110 	tms.tm_sec = -1;
    111 	t = timegm(&tms);
    112 	ATF_REQUIRE_ERRNO(0, t == (time_t)-1);
    113 
    114 	/*
    115 	 * Two seconds before the epoch.
    116 	 */
    117 	(void)memset(&tms, 0, sizeof(tms));
    118 	errno = 0;
    119 	tms.tm_year = 1970 - 1900;
    120 	tms.tm_mday = 1;
    121 	tms.tm_sec = -2;
    122 	t = timegm(&tms);
    123 	ATF_REQUIRE_ERRNO(0, t == (time_t)-2);
    124 
    125 }
    126 
    127 
    128 ATF_TP_ADD_TCS(tp)
    129 {
    130 
    131 	ATF_TP_ADD_TC(tp, mktime_negyear);
    132 	ATF_TP_ADD_TC(tp, timegm_epoch);
    133 
    134 	return atf_no_error();
    135 }
    136