1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31 #include <stdio.h>
32 #include <unistd.h>
33 #include <stdlib.h>
34 #include <time.h>
35 #include <sys/times.h>
36 #include <errno.h>
37 #include "lt_clock_test.h"
38 #include <osTest.h>
39
40 /* When clock time is changed, timers for a relative interval are unaffected,
41 * but timers for an absolute point in time are affected.
42 */
ClockTest(void)43 static int ClockTest(void)
44 {
45 clockid_t clk = CLOCK_REALTIME;
46 struct timespec res, tp, oldtp;
47 int ret;
48 int passflag = 0;
49
50 /* get clock resolution */
51 ret = clock_getres(clk, &res);
52 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
53 ICUNIT_ASSERT_EQUAL(res.tv_sec, CLOCK_RES_SEC, res.tv_sec);
54 ICUNIT_ASSERT_EQUAL(res.tv_nsec, CLOCK_RES_NSEC, res.tv_nsec);
55
56 /* get current real time */
57 ret = clock_gettime(clk, &oldtp);
58 printf("The current real time: sec is %lld, nsec is %ld\n", oldtp.tv_sec, oldtp.tv_nsec);
59 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
60
61 printf("sleep 2 seconds\n");
62 sleep(2); // 2, seconds.
63
64 tp.tv_sec = oldtp.tv_sec + 2; // 2, use for testing clock setting
65 tp.tv_nsec = oldtp.tv_nsec;
66
67 /* set real time */
68 ret = clock_settime(clk, &tp);
69 printf("Setting time: sec is %lld, nsec is %ld\n", tp.tv_sec, tp.tv_nsec);
70 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
71
72 printf("get real time clock again\n");
73
74 /* get current real time again */
75 ret = clock_gettime(clk, &tp);
76 printf("Obtaining the current time after setting: sec = %lld, nsec = %ld\n", tp.tv_sec, tp.tv_nsec);
77 passflag = (tp.tv_sec >= 2 + oldtp.tv_sec) && (tp.tv_sec <= 2 + oldtp.tv_sec + 1); // 2, use for testing clock setting
78 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
79 ICUNIT_ASSERT_EQUAL(passflag, true, passflag);
80
81 return 0;
82 }
83
ClockTest001(void)84 void ClockTest001(void)
85 {
86 TEST_ADD_CASE(__FUNCTION__, ClockTest, TEST_POSIX, TEST_TIMES, TEST_LEVEL0, TEST_FUNCTION);
87 }
88