| //===-- 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 <errno.h> |
| #include <limits.h> |
| #include <string.h> |
| |
| 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<int64_t>( |
| 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<int64_t>(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); |
| } |