1 | //===-- Unittests for gmtime_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/time/gmtime_r.h" |
10 | #include "src/time/time_constants.h" |
11 | #include "test/UnitTest/Test.h" |
12 | #include "test/src/time/TmMatcher.h" |
13 | |
14 | // gmtime and gmtime_r share the same code and thus didn't repeat all the tests |
15 | // from gmtime. Added couple of validation tests. |
16 | TEST(LlvmLibcGmTimeR, EndOf32BitEpochYear) { |
17 | // Test for maximum value of a signed 32-bit integer. |
18 | // Test implementation can encode time for Tue 19 January 2038 03:14:07 UTC. |
19 | time_t seconds = 0x7FFFFFFF; |
20 | struct tm tm_data; |
21 | struct tm *tm_data_ptr; |
22 | tm_data_ptr = LIBC_NAMESPACE::gmtime_r(&seconds, &tm_data); |
23 | EXPECT_TM_EQ( |
24 | (tm{7, // sec |
25 | 14, // min |
26 | 3, // hr |
27 | 19, // day |
28 | 0, // tm_mon starts with 0 for Jan |
29 | 2038 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
30 | 2, // wday |
31 | 7, // yday |
32 | 0}), |
33 | *tm_data_ptr); |
34 | EXPECT_TM_EQ(*tm_data_ptr, tm_data); |
35 | } |
36 | |
37 | TEST(LlvmLibcGmTimeR, Max64BitYear) { |
38 | if (sizeof(time_t) == 4) |
39 | return; |
40 | // Test for Tue Jan 1 12:50:50 in 2,147,483,647th year. |
41 | time_t seconds = 67767976202043050; |
42 | struct tm tm_data; |
43 | struct tm *tm_data_ptr; |
44 | tm_data_ptr = LIBC_NAMESPACE::gmtime_r(&seconds, &tm_data); |
45 | EXPECT_TM_EQ( |
46 | (tm{50, // sec |
47 | 50, // min |
48 | 12, // hr |
49 | 1, // day |
50 | 0, // tm_mon starts with 0 for Jan |
51 | 2147483647 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year |
52 | 2, // wday |
53 | 50, // yday |
54 | 0}), |
55 | *tm_data_ptr); |
56 | EXPECT_TM_EQ(*tm_data_ptr, tm_data); |
57 | } |
58 | |