1//===-- Unittests for asctime_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/asctime_r.h"
11#include "src/time/time_constants.h"
12#include "test/UnitTest/Test.h"
13#include "test/src/time/TmHelper.h"
14
15static inline char *call_asctime_r(struct tm *tm_data, int year, int month,
16 int mday, int hour, int min, int sec,
17 int wday, int yday, char *buffer) {
18 LIBC_NAMESPACE::tmhelper::testing::initialize_tm_data(
19 tm_data, year, month, mday, hour, min, sec, wday, yday);
20 return LIBC_NAMESPACE::asctime_r(tm_data, buffer);
21}
22
23// asctime and asctime_r share the same code and thus didn't repeat all the
24// tests from asctime. Added couple of validation tests.
25TEST(LlvmLibcAsctimeR, Nullptr) {
26 char *result;
27 result = LIBC_NAMESPACE::asctime_r(nullptr, nullptr);
28 ASSERT_ERRNO_EQ(EINVAL);
29 ASSERT_STREQ(nullptr, result);
30
31 char buffer[LIBC_NAMESPACE::time_constants::ASCTIME_BUFFER_SIZE];
32 result = LIBC_NAMESPACE::asctime_r(nullptr, buffer);
33 ASSERT_ERRNO_EQ(EINVAL);
34 ASSERT_STREQ(nullptr, result);
35
36 struct tm tm_data;
37 result = LIBC_NAMESPACE::asctime_r(&tm_data, nullptr);
38 ASSERT_ERRNO_EQ(EINVAL);
39 ASSERT_STREQ(nullptr, result);
40}
41
42TEST(LlvmLibcAsctimeR, ValidDate) {
43 char buffer[LIBC_NAMESPACE::time_constants::ASCTIME_BUFFER_SIZE];
44 struct tm tm_data;
45 char *result;
46 // 1970-01-01 00:00:00. Test with a valid buffer size.
47 result = call_asctime_r(&tm_data,
48 1970, // year
49 1, // month
50 1, // day
51 0, // hr
52 0, // min
53 0, // sec
54 4, // wday
55 0, // yday
56 buffer);
57 ASSERT_STREQ("Thu Jan 1 00:00:00 1970\n", result);
58}
59

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