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