1//===-- Unittests for ctime_r ---------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "src/__support/libc_errno.h"
10#include "src/time/ctime_r.h"
11#include "src/time/time_constants.h"
12#include "test/UnitTest/Test.h"
13#include "test/src/time/TmHelper.h"
14
15TEST(LlvmLibcCtimeR, Nullptr) {
16 char *result;
17 result = LIBC_NAMESPACE::ctime_r(nullptr, nullptr);
18 ASSERT_STREQ(nullptr, result);
19
20 char buffer[LIBC_NAMESPACE::time_constants::ASCTIME_BUFFER_SIZE];
21 result = LIBC_NAMESPACE::ctime_r(nullptr, buffer);
22 ASSERT_STREQ(nullptr, result);
23
24 time_t t;
25 result = LIBC_NAMESPACE::ctime_r(&t, nullptr);
26 ASSERT_STREQ(nullptr, result);
27}
28
29TEST(LlvmLibcCtimeR, ValidUnixTimestamp0) {
30 char buffer[LIBC_NAMESPACE::time_constants::ASCTIME_BUFFER_SIZE];
31 time_t t;
32 char *result;
33 // 1970-01-01 00:00:00. Test with a valid buffer size.
34 t = 0;
35 result = LIBC_NAMESPACE::ctime_r(&t, buffer);
36 ASSERT_STREQ("Thu Jan 1 00:00:00 1970\n", result);
37}
38
39TEST(LlvmLibcCtime, ValidUnixTimestamp32Int) {
40 char buffer[LIBC_NAMESPACE::time_constants::ASCTIME_BUFFER_SIZE];
41 time_t t;
42 char *result;
43 // 2038-01-19 03:14:07. Test with a valid buffer size.
44 t = 2147483647;
45 result = LIBC_NAMESPACE::ctime_r(&t, buffer);
46 ASSERT_STREQ("Tue Jan 19 03:14:07 2038\n", result);
47}
48
49TEST(LlvmLibcCtimeR, InvalidArgument) {
50 char buffer[LIBC_NAMESPACE::time_constants::ASCTIME_BUFFER_SIZE];
51 time_t t;
52 char *result;
53 t = 2147483648;
54 result = LIBC_NAMESPACE::ctime_r(&t, buffer);
55 ASSERT_STREQ(nullptr, result);
56}
57

source code of libc/test/src/time/ctime_r_test.cpp