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t_time.c revision 1.4 
      1 /*	$NetBSD: t_time.c,v 1.4 2017/01/10 15:32:46 christos 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 1.4 2017/01/10 15:32:46 christos 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 <sys/time.h>
     42 #include <unistd.h>
     43 
     44 ATF_TC(time_copy);
     45 ATF_TC_HEAD(time_copy, tc)
     46 {
     47 	atf_tc_set_md_var(tc, "descr", "Test the return values of time(3)");
     48 }
     49 
     50 ATF_TC_BODY(time_copy, tc)
     51 {
     52 	time_t t1, t2 = 0;
     53 
     54 	t1 = time(&t2);
     55 
     56 	if (t1 != t2)
     57 		atf_tc_fail("incorrect return values from time(3)");
     58 }
     59 
     60 ATF_TC(time_mono);
     61 ATF_TC_HEAD(time_mono, tc)
     62 {
     63 	atf_tc_set_md_var(tc, "descr", "Test monotonicity of time(3)");
     64 }
     65 
     66 ATF_TC_BODY(time_mono, tc)
     67 {
     68 	const size_t maxiter = 10;
     69 	time_t t1, t2;
     70 	size_t i;
     71 
     72 	for (i = 0; i < maxiter; i++) {
     73 
     74 		t1 = time(NULL);
     75 		(void)sleep(1);
     76 		t2 = time(NULL);
     77 
     78 		(void)fprintf(stderr, "%"PRId64" vs. %"PRId64"\n",
     79 		    (int64_t)t1, (int64_t)t2);
     80 
     81 		if (t1 >= t2)
     82 			atf_tc_fail("time(3) is not monotonic");
     83 	}
     84 }
     85 
     86 ATF_TC(time_timeofday);
     87 ATF_TC_HEAD(time_timeofday, tc)
     88 {
     89 	atf_tc_set_md_var(tc, "descr", "Test time(3) vs. gettimeofday(2)");
     90 }
     91 
     92 ATF_TC_BODY(time_timeofday, tc)
     93 {
     94 	struct timeval tv = { 0, 0 };
     95 	time_t t1, t2;
     96 
     97 	t1 = time(NULL);
     98 	ATF_REQUIRE(gettimeofday(&tv, NULL) == 0);
     99 	t2 = time(NULL);
    100 
    101 	(void)fprintf(stderr, "%"PRId64" vs. %"PRId64"\n",
    102 	    (int64_t)t1, (int64_t)tv.tv_sec);
    103 
    104 	if (t1 > tv.tv_sec || t2 < tv.tv_sec)
    105 		atf_tc_fail("time(3) and gettimeofday(2) differ");
    106 }
    107 
    108 ATF_TP_ADD_TCS(tp)
    109 {
    110 
    111 	ATF_TP_ADD_TC(tp, time_copy);
    112 	ATF_TP_ADD_TC(tp, time_mono);
    113 	ATF_TP_ADD_TC(tp, time_timeofday);
    114 
    115 	return atf_no_error();
    116 }
    117