/* * Copyright (c) 2022, Tim Flynn * * SPDX-License-Identifier: BSD-2-Clause */ #include #include #include #include using enum TimeZone::InDST; #if ENABLE_TIME_ZONE_DATA # include TEST_CASE(time_zone_from_string) { EXPECT_EQ(TimeZone::time_zone_from_string("America/New_York"sv), TimeZone::TimeZone::America_New_York); EXPECT_EQ(TimeZone::time_zone_from_string("Europe/Paris"sv), TimeZone::TimeZone::Europe_Paris); EXPECT_EQ(TimeZone::time_zone_from_string("Etc/GMT+2"sv), TimeZone::TimeZone::Etc_GMT_Ahead_2); EXPECT_EQ(TimeZone::time_zone_from_string("Etc/GMT-5"sv), TimeZone::TimeZone::Etc_GMT_Behind_5); EXPECT(!TimeZone::time_zone_from_string("I don't exist"sv).has_value()); } TEST_CASE(time_zone_from_string_link) { auto test_link = [](auto tz1, auto tz2) { auto result1 = TimeZone::time_zone_from_string(tz1); EXPECT(result1.has_value()); auto result2 = TimeZone::time_zone_from_string(tz2); EXPECT(result2.has_value()); EXPECT_EQ(*result1, *result2); }; test_link("America/New_York"sv, "US/Eastern"sv); test_link("Etc/GMT"sv, "GMT"sv); test_link("Etc/GMT+0"sv, "GMT"sv); test_link("Etc/GMT-0"sv, "GMT"sv); test_link("Etc/UTC"sv, "UTC"sv); test_link("Etc/Universal"sv, "UTC"sv); test_link("Universal"sv, "UTC"sv); } TEST_CASE(case_insensitive_time_zone_from_string) { EXPECT_EQ(TimeZone::time_zone_from_string("UTC"sv), TimeZone::TimeZone::UTC); EXPECT_EQ(TimeZone::time_zone_from_string("utc"sv), TimeZone::TimeZone::UTC); EXPECT_EQ(TimeZone::time_zone_from_string("uTc"sv), TimeZone::TimeZone::UTC); } TEST_CASE(time_zone_to_string) { EXPECT_EQ(TimeZone::time_zone_to_string(TimeZone::TimeZone::America_New_York), "America/New_York"sv); EXPECT_EQ(TimeZone::time_zone_to_string(TimeZone::TimeZone::Europe_Paris), "Europe/Paris"sv); EXPECT_EQ(TimeZone::time_zone_to_string(TimeZone::TimeZone::Etc_GMT_Ahead_2), "Etc/GMT+2"sv); EXPECT_EQ(TimeZone::time_zone_to_string(TimeZone::TimeZone::Etc_GMT_Behind_5), "Etc/GMT-5"sv); } TEST_CASE(time_zone_to_string_link) { EXPECT_EQ(TimeZone::time_zone_to_string(TimeZone::TimeZone::Etc_UTC), "Etc/UTC"sv); EXPECT_EQ(TimeZone::time_zone_to_string(TimeZone::TimeZone::UTC), "Etc/UTC"sv); EXPECT_EQ(TimeZone::time_zone_to_string(TimeZone::TimeZone::Universal), "Etc/UTC"sv); EXPECT_EQ(TimeZone::time_zone_to_string(TimeZone::TimeZone::Etc_Universal), "Etc/UTC"sv); } TEST_CASE(canonicalize_time_zone) { EXPECT_EQ(TimeZone::canonicalize_time_zone("America/New_York"sv), "America/New_York"sv); EXPECT_EQ(TimeZone::canonicalize_time_zone("AmErIcA/NeW_YoRk"sv), "America/New_York"sv); EXPECT_EQ(TimeZone::canonicalize_time_zone("UTC"sv), "UTC"sv); EXPECT_EQ(TimeZone::canonicalize_time_zone("GMT"sv), "UTC"sv); EXPECT_EQ(TimeZone::canonicalize_time_zone("GMT+0"sv), "UTC"sv); EXPECT_EQ(TimeZone::canonicalize_time_zone("GMT-0"sv), "UTC"sv); EXPECT_EQ(TimeZone::canonicalize_time_zone("Etc/UTC"sv), "UTC"sv); EXPECT_EQ(TimeZone::canonicalize_time_zone("Etc/GMT"sv), "UTC"sv); EXPECT(!TimeZone::canonicalize_time_zone("I don't exist"sv).has_value()); } static i64 offset(i64 sign, i64 hours, i64 minutes, i64 seconds) { return sign * ((hours * 3600) + (minutes * 60) + seconds); } static void test_offset(StringView time_zone, i64 time, i64 expected_offset, TimeZone::InDST expected_in_dst) { auto actual_offset = TimeZone::get_time_zone_offset(time_zone, AK::Time::from_seconds(time)); VERIFY(actual_offset.has_value()); EXPECT_EQ(actual_offset->seconds, expected_offset); EXPECT_EQ(actual_offset->in_dst, expected_in_dst); } TEST_CASE(get_time_zone_offset) { test_offset("America/Chicago"sv, -2717668237, offset(-1, 5, 50, 36), No); // Sunday, November 18, 1883 12:09:23 PM test_offset("America/Chicago"sv, -2717668236, offset(-1, 6, 00, 00), No); // Sunday, November 18, 1883 12:09:24 PM test_offset("America/Chicago"sv, -1067810460, offset(-1, 6, 00, 00), No); // Sunday, March 1, 1936 1:59:00 AM test_offset("America/Chicago"sv, -1067810400, offset(-1, 5, 00, 00), No); // Sunday, March 1, 1936 2:00:00 AM test_offset("America/Chicago"sv, -1045432860, offset(-1, 5, 00, 00), No); // Sunday, November 15, 1936 1:59:00 AM test_offset("America/Chicago"sv, -1045432800, offset(-1, 6, 00, 00), No); // Sunday, November 15, 1936 2:00:00 AM test_offset("Europe/London"sv, -3852662401, offset(-1, 0, 01, 15), No); // Tuesday, November 30, 1847 11:59:59 PM test_offset("Europe/London"sv, -3852662400, offset(+1, 0, 00, 00), No); // Wednesday, December 1, 1847 12:00:00 AM test_offset("Europe/London"sv, -37238401, offset(+1, 0, 00, 00), No); // Saturday, October 26, 1968 11:59:59 PM test_offset("Europe/London"sv, -37238400, offset(+1, 1, 00, 00), No); // Sunday, October 27, 1968 12:00:00 AM test_offset("Europe/London"sv, 57722399, offset(+1, 1, 00, 00), No); // Sunday, October 31, 1971 1:59:59 AM test_offset("Europe/London"sv, 57722400, offset(+1, 0, 00, 00), No); // Sunday, October 31, 1971 2:00:00 AM test_offset("UTC"sv, -1641846268, offset(+1, 0, 00, 00), No); test_offset("UTC"sv, 0, offset(+1, 0, 00, 00), No); test_offset("UTC"sv, 1641846268, offset(+1, 0, 00, 00), No); test_offset("Etc/GMT+4"sv, -1641846268, offset(-1, 4, 00, 00), No); test_offset("Etc/GMT+5"sv, 0, offset(-1, 5, 00, 00), No); test_offset("Etc/GMT+6"sv, 1641846268, offset(-1, 6, 00, 00), No); test_offset("Etc/GMT-12"sv, -1641846268, offset(+1, 12, 00, 00), No); test_offset("Etc/GMT-13"sv, 0, offset(+1, 13, 00, 00), No); test_offset("Etc/GMT-14"sv, 1641846268, offset(+1, 14, 00, 00), No); EXPECT(!TimeZone::get_time_zone_offset("I don't exist"sv, {}).has_value()); } TEST_CASE(get_time_zone_offset_with_dst) { test_offset("America/New_York"sv, 1642558528, offset(-1, 5, 00, 00), No); // Wednesday, January 19, 2022 2:15:28 AM test_offset("America/New_York"sv, 1663553728, offset(-1, 4, 00, 00), Yes); // Monday, September 19, 2022 2:15:28 AM test_offset("America/New_York"sv, 1671453238, offset(-1, 5, 00, 00), No); // Monday, December 19, 2022 12:33:58 PM // Phoenix does not observe DST. test_offset("America/Phoenix"sv, 1642558528, offset(-1, 7, 00, 00), No); // Wednesday, January 19, 2022 2:15:28 AM test_offset("America/Phoenix"sv, 1663553728, offset(-1, 7, 00, 00), No); // Monday, September 19, 2022 2:15:28 AM test_offset("America/Phoenix"sv, 1671453238, offset(-1, 7, 00, 00), No); // Monday, December 19, 2022 12:33:58 PM // Moscow's observed DST changed several times in 1919. test_offset("Europe/Moscow"sv, -1609459200, offset(+1, 2, 31, 19), No); // Wednesday, January 1, 1919 12:00:00 AM test_offset("Europe/Moscow"sv, -1596412800, offset(+1, 4, 31, 19), Yes); // Sunday, June 1, 1919 12:00:00 AM test_offset("Europe/Moscow"sv, -1592611200, offset(+1, 4, 00, 00), Yes); // Tuesday, July 15, 1919 12:00:00 AM test_offset("Europe/Moscow"sv, -1589068800, offset(+1, 3, 00, 00), No); // Monday, August 25, 1919 12:00:00 AM // Paraguay begins the year in DST. test_offset("America/Asuncion"sv, 1642558528, offset(-1, 3, 00, 00), Yes); // Wednesday, January 19, 2022 2:15:28 AM test_offset("America/Asuncion"sv, 1663553728, offset(-1, 4, 00, 00), No); // Monday, September 19, 2022 2:15:28 AM test_offset("America/Asuncion"sv, 1671453238, offset(-1, 3, 00, 00), Yes); // Monday, December 19, 2022 12:33:58 PM } TEST_CASE(get_named_time_zone_offsets) { auto test_named_offsets = [](auto time_zone, i64 time, i64 expected_standard_offset, i64 expected_daylight_offset, auto expected_standard_name, auto expected_daylight_name) { auto actual_offsets = TimeZone::get_named_time_zone_offsets(time_zone, AK::Time::from_seconds(time)); VERIFY(actual_offsets.has_value()); EXPECT_EQ(actual_offsets->at(0).seconds, expected_standard_offset); EXPECT_EQ(actual_offsets->at(1).seconds, expected_daylight_offset); EXPECT_EQ(actual_offsets->at(0).name, expected_standard_name); EXPECT_EQ(actual_offsets->at(1).name, expected_daylight_name); }; test_named_offsets("America/New_York"sv, 1642558528, offset(-1, 5, 00, 00), offset(-1, 4, 00, 00), "EST"sv, "EDT"sv); // Wednesday, January 19, 2022 2:15:28 AM test_named_offsets("UTC"sv, 1642558528, offset(+1, 0, 00, 00), offset(+1, 0, 00, 00), "UTC"sv, "UTC"sv); // Wednesday, January 19, 2022 2:15:28 AM test_named_offsets("GMT"sv, 1642558528, offset(+1, 0, 00, 00), offset(+1, 0, 00, 00), "GMT"sv, "GMT"sv); // Wednesday, January 19, 2022 2:15:28 AM // Phoenix does not observe DST. test_named_offsets("America/Phoenix"sv, 1642558528, offset(-1, 7, 00, 00), offset(-1, 7, 00, 00), "MST"sv, "MST"sv); // Wednesday, January 19, 2022 2:15:28 AM // Moscow's observed DST changed several times in 1919. test_named_offsets("Europe/Moscow"sv, -1609459200, offset(+1, 2, 31, 19), offset(+1, 3, 31, 19), "MSK"sv, "MSD"sv); // Wednesday, January 1, 1919 12:00:00 AM test_named_offsets("Europe/Moscow"sv, -1596412800, offset(+1, 2, 31, 19), offset(+1, 4, 31, 19), "MSK"sv, "MDST"sv); // Sunday, June 1, 1919 12:00:00 AM test_named_offsets("Europe/Moscow"sv, -1589068800, offset(+1, 3, 00, 00), offset(+1, 4, 00, 00), "MSK"sv, "MSD"sv); // Monday, August 25, 1919 12:00:00 AM } #else TEST_CASE(time_zone_from_string) { EXPECT_EQ(TimeZone::time_zone_from_string("UTC"sv), TimeZone::TimeZone::UTC); EXPECT(!TimeZone::time_zone_from_string("Europe/Paris"sv).has_value()); EXPECT(!TimeZone::time_zone_from_string("Etc/UTC"sv).has_value()); EXPECT(!TimeZone::time_zone_from_string("I don't exist"sv).has_value()); } TEST_CASE(get_time_zone_offset) { EXPECT_EQ(TimeZone::get_time_zone_offset("UTC", AK::Time::from_seconds(123456)), { 0, No }); EXPECT(!TimeZone::get_time_zone_offset("Europe/Paris"sv, {}).has_value()); EXPECT(!TimeZone::get_time_zone_offset("Etc/UTC"sv, {}).has_value()); EXPECT(!TimeZone::get_time_zone_offset("I don't exist"sv, {}).has_value()); } #endif