1 //===-- Unittests for asctime_r
2 //--------------------------------------------===//
3 //
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "src/time/asctime_r.h"
11 #include "src/time/time_utils.h"
12 #include "test/src/time/TmHelper.h"
13 #include "utils/UnitTest/Test.h"
14 
15 using __llvm_libc::time_utils::TimeConstants;
16 
17 static inline char *call_asctime_r(struct tm *tm_data, int year, int month,
18                                    int mday, int hour, int min, int sec,
19                                    int wday, int yday, char *buffer) {
20   __llvm_libc::tmhelper::testing::initialize_tm_data(
21       tm_data, year, month, mday, hour, min, sec, wday, yday);
22   return __llvm_libc::asctime_r(tm_data, buffer);
23 }
24 
25 // asctime and asctime_r share the same code and thus didn't repeat all the
26 // tests from asctime. Added couple of validation tests.
27 TEST(LlvmLibcAsctimeR, Nullptr) {
28   char *result;
29   result = __llvm_libc::asctime_r(nullptr, nullptr);
30   ASSERT_EQ(EINVAL, llvmlibc_errno);
31   ASSERT_STREQ(nullptr, result);
32 
33   char buffer[TimeConstants::ASCTIME_BUFFER_SIZE];
34   result = __llvm_libc::asctime_r(nullptr, buffer);
35   ASSERT_EQ(EINVAL, llvmlibc_errno);
36   ASSERT_STREQ(nullptr, result);
37 
38   struct tm tm_data;
39   result = __llvm_libc::asctime_r(&tm_data, nullptr);
40   ASSERT_EQ(EINVAL, llvmlibc_errno);
41   ASSERT_STREQ(nullptr, result);
42 }
43 
44 TEST(LlvmLibcAsctimeR, ValidDate) {
45   char buffer[TimeConstants::ASCTIME_BUFFER_SIZE];
46   struct tm tm_data;
47   char *result;
48   // 1970-01-01 00:00:00. Test with a valid buffer size.
49   result = call_asctime_r(&tm_data,
50                           1970, // year
51                           1,    // month
52                           1,    // day
53                           0,    // hr
54                           0,    // min
55                           0,    // sec
56                           4,    // wday
57                           0,    // yday
58                           buffer);
59   ASSERT_STREQ("Thu Jan  1 00:00:00 1970\n", result);
60 }
61