//===-- Unittests for gmtime ----------------------------------------------===// // // 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.h" #include "src/time/time_utils.h" #include "test/ErrnoSetterMatcher.h" #include "test/src/time/TmMatcher.h" #include "utils/UnitTest/Test.h" #include #include #include using __llvm_libc::testing::ErrnoSetterMatcher::Fails; using __llvm_libc::testing::ErrnoSetterMatcher::Succeeds; using __llvm_libc::time_utils::TimeConstants; TEST(LlvmLibcGmTime, OutOfRange) { time_t seconds = 1 + INT_MAX * static_cast( TimeConstants::NumberOfSecondsInLeapYear); struct tm *tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TRUE(tm_data == nullptr); EXPECT_EQ(llvmlibc_errno, EOVERFLOW); llvmlibc_errno = 0; seconds = INT_MIN * static_cast(TimeConstants::NumberOfSecondsInLeapYear) - 1; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TRUE(tm_data == nullptr); EXPECT_EQ(llvmlibc_errno, EOVERFLOW); } TEST(LlvmLibcGmTime, InvalidSeconds) { time_t seconds = 0; struct tm *tm_data = nullptr; // -1 second from 1970-01-01 00:00:00 returns 1969-12-31 23:59:59. seconds = -1; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{59, // sec 59, // min 23, // hr 31, // day 12 - 1, // tm_mon starts with 0 for Jan 1969 - TimeConstants::TimeYearBase, // year 3, // wday 364, // yday 0}), *tm_data); // 60 seconds from 1970-01-01 00:00:00 returns 1970-01-01 00:01:00. seconds = 60; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{0, // sec 1, // min 0, // hr 1, // day 0, // tm_mon starts with 0 for Jan 1970 - TimeConstants::TimeYearBase, // year 4, // wday 0, // yday 0}), *tm_data); } TEST(LlvmLibcGmTime, InvalidMinutes) { time_t seconds = 0; struct tm *tm_data = nullptr; // -1 minute from 1970-01-01 00:00:00 returns 1969-12-31 23:59:00. seconds = -TimeConstants::SecondsPerMin; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{0, // sec 59, // min 23, // hr 31, // day 11, // tm_mon starts with 0 for Jan 1969 - TimeConstants::TimeYearBase, // year 3, // wday 0, // yday 0}), *tm_data); // 60 minutes from 1970-01-01 00:00:00 returns 1970-01-01 01:00:00. seconds = 60 * TimeConstants::SecondsPerMin; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{0, // sec 0, // min 1, // hr 1, // day 0, // tm_mon starts with 0 for Jan 1970 - TimeConstants::TimeYearBase, // year 4, // wday 0, // yday 0}), *tm_data); } TEST(LlvmLibcGmTime, InvalidHours) { time_t seconds = 0; struct tm *tm_data = nullptr; // -1 hour from 1970-01-01 00:00:00 returns 1969-12-31 23:00:00. seconds = -TimeConstants::SecondsPerHour; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{0, // sec 0, // min 23, // hr 31, // day 11, // tm_mon starts with 0 for Jan 1969 - TimeConstants::TimeYearBase, // year 3, // wday 0, // yday 0}), *tm_data); // 24 hours from 1970-01-01 00:00:00 returns 1970-01-02 00:00:00. seconds = 24 * TimeConstants::SecondsPerHour; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{0, // sec 0, // min 0, // hr 2, // day 0, // tm_mon starts with 0 for Jan 1970 - TimeConstants::TimeYearBase, // year 5, // wday 0, // yday 0}), *tm_data); } TEST(LlvmLibcGmTime, InvalidYear) { // -1 year from 1970-01-01 00:00:00 returns 1969-01-01 00:00:00. time_t seconds = -TimeConstants::DaysPerNonLeapYear * TimeConstants::SecondsPerDay; struct tm *tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{0, // sec 0, // min 0, // hr 1, // day 0, // tm_mon starts with 0 for Jan 1969 - TimeConstants::TimeYearBase, // year 3, // wday 0, // yday 0}), *tm_data); } TEST(LlvmLibcGmTime, InvalidMonths) { time_t seconds = 0; struct tm *tm_data = nullptr; // -1 month from 1970-01-01 00:00:00 returns 1969-12-01 00:00:00. seconds = -31 * TimeConstants::SecondsPerDay; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{0, // sec 0, // min 0, // hr 1, // day 12 - 1, // tm_mon starts with 0 for Jan 1969 - TimeConstants::TimeYearBase, // year 1, // wday 0, // yday 0}), *tm_data); // 1970-13-01 00:00:00 returns 1971-01-01 00:00:00. seconds = TimeConstants::DaysPerNonLeapYear * TimeConstants::SecondsPerDay; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{0, // sec 0, // min 0, // hr 1, // day 0, // tm_mon starts with 0 for Jan 1971 - TimeConstants::TimeYearBase, // year 5, // wday 0, // yday 0}), *tm_data); } TEST(LlvmLibcGmTime, InvalidDays) { time_t seconds = 0; struct tm *tm_data = nullptr; // -1 day from 1970-01-01 00:00:00 returns 1969-12-31 00:00:00. seconds = -1 * TimeConstants::SecondsPerDay; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{0, // sec 0, // min 0, // hr 31, // day 11, // tm_mon starts with 0 for Jan 1969 - TimeConstants::TimeYearBase, // year 3, // wday 0, // yday 0}), *tm_data); // 1970-01-32 00:00:00 returns 1970-02-01 00:00:00. seconds = 31 * TimeConstants::SecondsPerDay; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{0, // sec 0, // min 0, // hr 1, // day 0, // tm_mon starts with 0 for Jan 1970 - TimeConstants::TimeYearBase, // year 0, // wday 0, // yday 0}), *tm_data); // 1970-02-29 00:00:00 returns 1970-03-01 00:00:00. seconds = 59 * TimeConstants::SecondsPerDay; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{0, // sec 0, // min 0, // hr 1, // day 2, // tm_mon starts with 0 for Jan 1970 - TimeConstants::TimeYearBase, // year 0, // wday 0, // yday 0}), *tm_data); // 1972-02-30 00:00:00 returns 1972-03-01 00:00:00. seconds = ((2 * TimeConstants::DaysPerNonLeapYear) + 60) * TimeConstants::SecondsPerDay; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{0, // sec 0, // min 0, // hr 1, // day 2, // tm_mon starts with 0 for Jan 1972 - TimeConstants::TimeYearBase, // year 3, // wday 0, // yday 0}), *tm_data); } TEST(LlvmLibcGmTime, 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 = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{7, // sec 14, // min 3, // hr 19, // day 0, // tm_mon starts with 0 for Jan 2038 - TimeConstants::TimeYearBase, // year 2, // wday 7, // yday 0}), *tm_data); } TEST(LlvmLibcGmTime, Max64BitYear) { if (sizeof(time_t) == 4) return; // Mon Jan 1 12:50:50 2170 (200 years from 1970), time_t seconds = 6311479850; struct tm *tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{50, // sec 50, // min 12, // hr 1, // day 0, // tm_mon starts with 0 for Jan 2170 - TimeConstants::TimeYearBase, // year 1, // wday 50, // yday 0}), *tm_data); // Test for Tue Jan 1 12:50:50 in 2,147,483,647th year. seconds = 67767976202043050; tm_data = __llvm_libc::gmtime(&seconds); EXPECT_TM_EQ((tm{50, // sec 50, // min 12, // hr 1, // day 0, // tm_mon starts with 0 for Jan 2147483647 - TimeConstants::TimeYearBase, // year 2, // wday 50, // yday 0}), *tm_data); }