t_time.c revision 313535 
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
44ATF_TC(time_copy);
45ATF_TC_HEAD(time_copy, tc)
46{
47	atf_tc_set_md_var(tc, "descr", "Test the return values of time(3)");
48}
49
50ATF_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
60ATF_TC(time_mono);
61ATF_TC_HEAD(time_mono, tc)
62{
63	atf_tc_set_md_var(tc, "descr", "Test monotonicity of time(3)");
64}
65
66ATF_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
86ATF_TC(time_timeofday);
87ATF_TC_HEAD(time_timeofday, tc)
88{
89	atf_tc_set_md_var(tc, "descr", "Test time(3) vs. gettimeofday(2)");
90}
91
92ATF_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
108ATF_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