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//===-- Unittests for gmtime_r --------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/time/gmtime_r.h"
#include "src/time/time_constants.h"
#include "test/UnitTest/ErrnoCheckingTest.h"
#include "test/UnitTest/Test.h"
#include "test/src/time/TmMatcher.h"
using LlvmLibcGmTimeR = LIBC_NAMESPACE::testing::ErrnoCheckingTest;
// gmtime and gmtime_r share the same code and thus didn't repeat all the tests
// from gmtime. Added couple of validation tests.
TEST_F(LlvmLibcGmTimeR, EndOf32BitEpochYear) {
// Test for maximum value of a signed 32-bit integer.
// Test implementation can encode time for Tue 19 January 2038 03:14:07 UTC.
time_t seconds = 0x7FFFFFFF;
struct tm tm_data;
struct tm *tm_data_ptr;
tm_data_ptr = LIBC_NAMESPACE::gmtime_r(&seconds, &tm_data);
EXPECT_TM_EQ(
(tm{7, // sec
14, // min
3, // hr
19, // day
0, // tm_mon starts with 0 for Jan
2038 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year
2, // wday
7, // yday
0}),
*tm_data_ptr);
EXPECT_TM_EQ(*tm_data_ptr, tm_data);
}
TEST_F(LlvmLibcGmTimeR, Max64BitYear) {
if (sizeof(time_t) == 4)
return;
// Test for Tue Jan 1 12:50:50 in 2,147,483,647th year.
time_t seconds = 67767976202043050;
struct tm tm_data;
struct tm *tm_data_ptr;
tm_data_ptr = LIBC_NAMESPACE::gmtime_r(&seconds, &tm_data);
EXPECT_TM_EQ(
(tm{50, // sec
50, // min
12, // hr
1, // day
0, // tm_mon starts with 0 for Jan
2147483647 - LIBC_NAMESPACE::time_constants::TIME_YEAR_BASE, // year
2, // wday
50, // yday
0}),
*tm_data_ptr);
EXPECT_TM_EQ(*tm_data_ptr, tm_data);
}
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