| // Copyright 2016 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "absl/time/internal/cctz/include/cctz/time_zone.h" |
| |
| #include <chrono> |
| #include <cstddef> |
| #include <cstdlib> |
| #include <future> |
| #include <limits> |
| #include <string> |
| #include <thread> |
| #include <vector> |
| |
| #include "absl/time/internal/cctz/include/cctz/civil_time.h" |
| #include "gtest/gtest.h" |
| |
| namespace chrono = std::chrono; |
| |
| namespace absl { |
| inline namespace lts_2018_12_18 { |
| namespace time_internal { |
| namespace cctz { |
| |
| namespace { |
| |
| // A list of known time-zone names. |
| const char* const kTimeZoneNames[] = { |
| "Africa/Abidjan", |
| "Africa/Accra", |
| "Africa/Addis_Ababa", |
| "Africa/Algiers", |
| "Africa/Asmara", |
| "Africa/Asmera", |
| "Africa/Bamako", |
| "Africa/Bangui", |
| "Africa/Banjul", |
| "Africa/Bissau", |
| "Africa/Blantyre", |
| "Africa/Brazzaville", |
| "Africa/Bujumbura", |
| "Africa/Cairo", |
| "Africa/Casablanca", |
| "Africa/Ceuta", |
| "Africa/Conakry", |
| "Africa/Dakar", |
| "Africa/Dar_es_Salaam", |
| "Africa/Djibouti", |
| "Africa/Douala", |
| "Africa/El_Aaiun", |
| "Africa/Freetown", |
| "Africa/Gaborone", |
| "Africa/Harare", |
| "Africa/Johannesburg", |
| "Africa/Juba", |
| "Africa/Kampala", |
| "Africa/Khartoum", |
| "Africa/Kigali", |
| "Africa/Kinshasa", |
| "Africa/Lagos", |
| "Africa/Libreville", |
| "Africa/Lome", |
| "Africa/Luanda", |
| "Africa/Lubumbashi", |
| "Africa/Lusaka", |
| "Africa/Malabo", |
| "Africa/Maputo", |
| "Africa/Maseru", |
| "Africa/Mbabane", |
| "Africa/Mogadishu", |
| "Africa/Monrovia", |
| "Africa/Nairobi", |
| "Africa/Ndjamena", |
| "Africa/Niamey", |
| "Africa/Nouakchott", |
| "Africa/Ouagadougou", |
| "Africa/Porto-Novo", |
| "Africa/Sao_Tome", |
| "Africa/Timbuktu", |
| "Africa/Tripoli", |
| "Africa/Tunis", |
| "Africa/Windhoek", |
| "America/Adak", |
| "America/Anchorage", |
| "America/Anguilla", |
| "America/Antigua", |
| "America/Araguaina", |
| "America/Argentina/Buenos_Aires", |
| "America/Argentina/Catamarca", |
| "America/Argentina/ComodRivadavia", |
| "America/Argentina/Cordoba", |
| "America/Argentina/Jujuy", |
| "America/Argentina/La_Rioja", |
| "America/Argentina/Mendoza", |
| "America/Argentina/Rio_Gallegos", |
| "America/Argentina/Salta", |
| "America/Argentina/San_Juan", |
| "America/Argentina/San_Luis", |
| "America/Argentina/Tucuman", |
| "America/Argentina/Ushuaia", |
| "America/Aruba", |
| "America/Asuncion", |
| "America/Atikokan", |
| "America/Atka", |
| "America/Bahia", |
| "America/Bahia_Banderas", |
| "America/Barbados", |
| "America/Belem", |
| "America/Belize", |
| "America/Blanc-Sablon", |
| "America/Boa_Vista", |
| "America/Bogota", |
| "America/Boise", |
| "America/Buenos_Aires", |
| "America/Cambridge_Bay", |
| "America/Campo_Grande", |
| "America/Cancun", |
| "America/Caracas", |
| "America/Catamarca", |
| "America/Cayenne", |
| "America/Cayman", |
| "America/Chicago", |
| "America/Chihuahua", |
| "America/Coral_Harbour", |
| "America/Cordoba", |
| "America/Costa_Rica", |
| "America/Creston", |
| "America/Cuiaba", |
| "America/Curacao", |
| "America/Danmarkshavn", |
| "America/Dawson", |
| "America/Dawson_Creek", |
| "America/Denver", |
| "America/Detroit", |
| "America/Dominica", |
| "America/Edmonton", |
| "America/Eirunepe", |
| "America/El_Salvador", |
| "America/Ensenada", |
| "America/Fort_Nelson", |
| "America/Fort_Wayne", |
| "America/Fortaleza", |
| "America/Glace_Bay", |
| "America/Godthab", |
| "America/Goose_Bay", |
| "America/Grand_Turk", |
| "America/Grenada", |
| "America/Guadeloupe", |
| "America/Guatemala", |
| "America/Guayaquil", |
| "America/Guyana", |
| "America/Halifax", |
| "America/Havana", |
| "America/Hermosillo", |
| "America/Indiana/Indianapolis", |
| "America/Indiana/Knox", |
| "America/Indiana/Marengo", |
| "America/Indiana/Petersburg", |
| "America/Indiana/Tell_City", |
| "America/Indiana/Vevay", |
| "America/Indiana/Vincennes", |
| "America/Indiana/Winamac", |
| "America/Indianapolis", |
| "America/Inuvik", |
| "America/Iqaluit", |
| "America/Jamaica", |
| "America/Jujuy", |
| "America/Juneau", |
| "America/Kentucky/Louisville", |
| "America/Kentucky/Monticello", |
| "America/Knox_IN", |
| "America/Kralendijk", |
| "America/La_Paz", |
| "America/Lima", |
| "America/Los_Angeles", |
| "America/Louisville", |
| "America/Lower_Princes", |
| "America/Maceio", |
| "America/Managua", |
| "America/Manaus", |
| "America/Marigot", |
| "America/Martinique", |
| "America/Matamoros", |
| "America/Mazatlan", |
| "America/Mendoza", |
| "America/Menominee", |
| "America/Merida", |
| "America/Metlakatla", |
| "America/Mexico_City", |
| "America/Miquelon", |
| "America/Moncton", |
| "America/Monterrey", |
| "America/Montevideo", |
| "America/Montreal", |
| "America/Montserrat", |
| "America/Nassau", |
| "America/New_York", |
| "America/Nipigon", |
| "America/Nome", |
| "America/Noronha", |
| "America/North_Dakota/Beulah", |
| "America/North_Dakota/Center", |
| "America/North_Dakota/New_Salem", |
| "America/Ojinaga", |
| "America/Panama", |
| "America/Pangnirtung", |
| "America/Paramaribo", |
| "America/Phoenix", |
| "America/Port-au-Prince", |
| "America/Port_of_Spain", |
| "America/Porto_Acre", |
| "America/Porto_Velho", |
| "America/Puerto_Rico", |
| "America/Punta_Arenas", |
| "America/Rainy_River", |
| "America/Rankin_Inlet", |
| "America/Recife", |
| "America/Regina", |
| "America/Resolute", |
| "America/Rio_Branco", |
| "America/Rosario", |
| "America/Santa_Isabel", |
| "America/Santarem", |
| "America/Santiago", |
| "America/Santo_Domingo", |
| "America/Sao_Paulo", |
| "America/Scoresbysund", |
| "America/Shiprock", |
| "America/Sitka", |
| "America/St_Barthelemy", |
| "America/St_Johns", |
| "America/St_Kitts", |
| "America/St_Lucia", |
| "America/St_Thomas", |
| "America/St_Vincent", |
| "America/Swift_Current", |
| "America/Tegucigalpa", |
| "America/Thule", |
| "America/Thunder_Bay", |
| "America/Tijuana", |
| "America/Toronto", |
| "America/Tortola", |
| "America/Vancouver", |
| "America/Virgin", |
| "America/Whitehorse", |
| "America/Winnipeg", |
| "America/Yakutat", |
| "America/Yellowknife", |
| "Antarctica/Casey", |
| "Antarctica/Davis", |
| "Antarctica/DumontDUrville", |
| "Antarctica/Macquarie", |
| "Antarctica/Mawson", |
| "Antarctica/McMurdo", |
| "Antarctica/Palmer", |
| "Antarctica/Rothera", |
| "Antarctica/South_Pole", |
| "Antarctica/Syowa", |
| "Antarctica/Troll", |
| "Antarctica/Vostok", |
| "Arctic/Longyearbyen", |
| "Asia/Aden", |
| "Asia/Almaty", |
| "Asia/Amman", |
| "Asia/Anadyr", |
| "Asia/Aqtau", |
| "Asia/Aqtobe", |
| "Asia/Ashgabat", |
| "Asia/Ashkhabad", |
| "Asia/Atyrau", |
| "Asia/Baghdad", |
| "Asia/Bahrain", |
| "Asia/Baku", |
| "Asia/Bangkok", |
| "Asia/Barnaul", |
| "Asia/Beirut", |
| "Asia/Bishkek", |
| "Asia/Brunei", |
| "Asia/Calcutta", |
| "Asia/Chita", |
| "Asia/Choibalsan", |
| "Asia/Chongqing", |
| "Asia/Chungking", |
| "Asia/Colombo", |
| "Asia/Dacca", |
| "Asia/Damascus", |
| "Asia/Dhaka", |
| "Asia/Dili", |
| "Asia/Dubai", |
| "Asia/Dushanbe", |
| "Asia/Famagusta", |
| "Asia/Gaza", |
| "Asia/Harbin", |
| "Asia/Hebron", |
| "Asia/Ho_Chi_Minh", |
| "Asia/Hong_Kong", |
| "Asia/Hovd", |
| "Asia/Irkutsk", |
| "Asia/Istanbul", |
| "Asia/Jakarta", |
| "Asia/Jayapura", |
| "Asia/Jerusalem", |
| "Asia/Kabul", |
| "Asia/Kamchatka", |
| "Asia/Karachi", |
| "Asia/Kashgar", |
| "Asia/Kathmandu", |
| "Asia/Katmandu", |
| "Asia/Khandyga", |
| "Asia/Kolkata", |
| "Asia/Krasnoyarsk", |
| "Asia/Kuala_Lumpur", |
| "Asia/Kuching", |
| "Asia/Kuwait", |
| "Asia/Macao", |
| "Asia/Macau", |
| "Asia/Magadan", |
| "Asia/Makassar", |
| "Asia/Manila", |
| "Asia/Muscat", |
| "Asia/Nicosia", |
| "Asia/Novokuznetsk", |
| "Asia/Novosibirsk", |
| "Asia/Omsk", |
| "Asia/Oral", |
| "Asia/Phnom_Penh", |
| "Asia/Pontianak", |
| "Asia/Pyongyang", |
| "Asia/Qatar", |
| "Asia/Qyzylorda", |
| "Asia/Rangoon", |
| "Asia/Riyadh", |
| "Asia/Saigon", |
| "Asia/Sakhalin", |
| "Asia/Samarkand", |
| "Asia/Seoul", |
| "Asia/Shanghai", |
| "Asia/Singapore", |
| "Asia/Srednekolymsk", |
| "Asia/Taipei", |
| "Asia/Tashkent", |
| "Asia/Tbilisi", |
| "Asia/Tehran", |
| "Asia/Tel_Aviv", |
| "Asia/Thimbu", |
| "Asia/Thimphu", |
| "Asia/Tokyo", |
| "Asia/Tomsk", |
| "Asia/Ujung_Pandang", |
| "Asia/Ulaanbaatar", |
| "Asia/Ulan_Bator", |
| "Asia/Urumqi", |
| "Asia/Ust-Nera", |
| "Asia/Vientiane", |
| "Asia/Vladivostok", |
| "Asia/Yakutsk", |
| "Asia/Yangon", |
| "Asia/Yekaterinburg", |
| "Asia/Yerevan", |
| "Atlantic/Azores", |
| "Atlantic/Bermuda", |
| "Atlantic/Canary", |
| "Atlantic/Cape_Verde", |
| "Atlantic/Faeroe", |
| "Atlantic/Faroe", |
| "Atlantic/Jan_Mayen", |
| "Atlantic/Madeira", |
| "Atlantic/Reykjavik", |
| "Atlantic/South_Georgia", |
| "Atlantic/St_Helena", |
| "Atlantic/Stanley", |
| "Australia/ACT", |
| "Australia/Adelaide", |
| "Australia/Brisbane", |
| "Australia/Broken_Hill", |
| "Australia/Canberra", |
| "Australia/Currie", |
| "Australia/Darwin", |
| "Australia/Eucla", |
| "Australia/Hobart", |
| "Australia/LHI", |
| "Australia/Lindeman", |
| "Australia/Lord_Howe", |
| "Australia/Melbourne", |
| "Australia/NSW", |
| "Australia/North", |
| "Australia/Perth", |
| "Australia/Queensland", |
| "Australia/South", |
| "Australia/Sydney", |
| "Australia/Tasmania", |
| "Australia/Victoria", |
| "Australia/West", |
| "Australia/Yancowinna", |
| "Brazil/Acre", |
| "Brazil/DeNoronha", |
| "Brazil/East", |
| "Brazil/West", |
| "CET", |
| "CST6CDT", |
| "Canada/Atlantic", |
| "Canada/Central", |
| "Canada/Eastern", |
| "Canada/Mountain", |
| "Canada/Newfoundland", |
| "Canada/Pacific", |
| "Canada/Saskatchewan", |
| "Canada/Yukon", |
| "Chile/Continental", |
| "Chile/EasterIsland", |
| "Cuba", |
| "EET", |
| "EST", |
| "EST5EDT", |
| "Egypt", |
| "Eire", |
| "Etc/GMT", |
| "Etc/GMT+0", |
| "Etc/GMT+1", |
| "Etc/GMT+10", |
| "Etc/GMT+11", |
| "Etc/GMT+12", |
| "Etc/GMT+2", |
| "Etc/GMT+3", |
| "Etc/GMT+4", |
| "Etc/GMT+5", |
| "Etc/GMT+6", |
| "Etc/GMT+7", |
| "Etc/GMT+8", |
| "Etc/GMT+9", |
| "Etc/GMT-0", |
| "Etc/GMT-1", |
| "Etc/GMT-10", |
| "Etc/GMT-11", |
| "Etc/GMT-12", |
| "Etc/GMT-13", |
| "Etc/GMT-14", |
| "Etc/GMT-2", |
| "Etc/GMT-3", |
| "Etc/GMT-4", |
| "Etc/GMT-5", |
| "Etc/GMT-6", |
| "Etc/GMT-7", |
| "Etc/GMT-8", |
| "Etc/GMT-9", |
| "Etc/GMT0", |
| "Etc/Greenwich", |
| "Etc/UCT", |
| "Etc/UTC", |
| "Etc/Universal", |
| "Etc/Zulu", |
| "Europe/Amsterdam", |
| "Europe/Andorra", |
| "Europe/Astrakhan", |
| "Europe/Athens", |
| "Europe/Belfast", |
| "Europe/Belgrade", |
| "Europe/Berlin", |
| "Europe/Bratislava", |
| "Europe/Brussels", |
| "Europe/Bucharest", |
| "Europe/Budapest", |
| "Europe/Busingen", |
| "Europe/Chisinau", |
| "Europe/Copenhagen", |
| "Europe/Dublin", |
| "Europe/Gibraltar", |
| "Europe/Guernsey", |
| "Europe/Helsinki", |
| "Europe/Isle_of_Man", |
| "Europe/Istanbul", |
| "Europe/Jersey", |
| "Europe/Kaliningrad", |
| "Europe/Kiev", |
| "Europe/Kirov", |
| "Europe/Lisbon", |
| "Europe/Ljubljana", |
| "Europe/London", |
| "Europe/Luxembourg", |
| "Europe/Madrid", |
| "Europe/Malta", |
| "Europe/Mariehamn", |
| "Europe/Minsk", |
| "Europe/Monaco", |
| "Europe/Moscow", |
| "Europe/Nicosia", |
| "Europe/Oslo", |
| "Europe/Paris", |
| "Europe/Podgorica", |
| "Europe/Prague", |
| "Europe/Riga", |
| "Europe/Rome", |
| "Europe/Samara", |
| "Europe/San_Marino", |
| "Europe/Sarajevo", |
| "Europe/Saratov", |
| "Europe/Simferopol", |
| "Europe/Skopje", |
| "Europe/Sofia", |
| "Europe/Stockholm", |
| "Europe/Tallinn", |
| "Europe/Tirane", |
| "Europe/Tiraspol", |
| "Europe/Ulyanovsk", |
| "Europe/Uzhgorod", |
| "Europe/Vaduz", |
| "Europe/Vatican", |
| "Europe/Vienna", |
| "Europe/Vilnius", |
| "Europe/Volgograd", |
| "Europe/Warsaw", |
| "Europe/Zagreb", |
| "Europe/Zaporozhye", |
| "Europe/Zurich", |
| "GB", |
| "GB-Eire", |
| "GMT", |
| "GMT+0", |
| "GMT-0", |
| "GMT0", |
| "Greenwich", |
| "HST", |
| "Hongkong", |
| "Iceland", |
| "Indian/Antananarivo", |
| "Indian/Chagos", |
| "Indian/Christmas", |
| "Indian/Cocos", |
| "Indian/Comoro", |
| "Indian/Kerguelen", |
| "Indian/Mahe", |
| "Indian/Maldives", |
| "Indian/Mauritius", |
| "Indian/Mayotte", |
| "Indian/Reunion", |
| "Iran", |
| "Israel", |
| "Jamaica", |
| "Japan", |
| "Kwajalein", |
| "Libya", |
| "MET", |
| "MST", |
| "MST7MDT", |
| "Mexico/BajaNorte", |
| "Mexico/BajaSur", |
| "Mexico/General", |
| "NZ", |
| "NZ-CHAT", |
| "Navajo", |
| "PRC", |
| "PST8PDT", |
| "Pacific/Apia", |
| "Pacific/Auckland", |
| "Pacific/Bougainville", |
| "Pacific/Chatham", |
| "Pacific/Chuuk", |
| "Pacific/Easter", |
| "Pacific/Efate", |
| "Pacific/Enderbury", |
| "Pacific/Fakaofo", |
| "Pacific/Fiji", |
| "Pacific/Funafuti", |
| "Pacific/Galapagos", |
| "Pacific/Gambier", |
| "Pacific/Guadalcanal", |
| "Pacific/Guam", |
| "Pacific/Honolulu", |
| "Pacific/Johnston", |
| "Pacific/Kiritimati", |
| "Pacific/Kosrae", |
| "Pacific/Kwajalein", |
| "Pacific/Majuro", |
| "Pacific/Marquesas", |
| "Pacific/Midway", |
| "Pacific/Nauru", |
| "Pacific/Niue", |
| "Pacific/Norfolk", |
| "Pacific/Noumea", |
| "Pacific/Pago_Pago", |
| "Pacific/Palau", |
| "Pacific/Pitcairn", |
| "Pacific/Pohnpei", |
| "Pacific/Ponape", |
| "Pacific/Port_Moresby", |
| "Pacific/Rarotonga", |
| "Pacific/Saipan", |
| "Pacific/Samoa", |
| "Pacific/Tahiti", |
| "Pacific/Tarawa", |
| "Pacific/Tongatapu", |
| "Pacific/Truk", |
| "Pacific/Wake", |
| "Pacific/Wallis", |
| "Pacific/Yap", |
| "Poland", |
| "Portugal", |
| "ROC", |
| "ROK", |
| "Singapore", |
| "Turkey", |
| "UCT", |
| "US/Alaska", |
| "US/Aleutian", |
| "US/Arizona", |
| "US/Central", |
| "US/East-Indiana", |
| "US/Eastern", |
| "US/Hawaii", |
| "US/Indiana-Starke", |
| "US/Michigan", |
| "US/Mountain", |
| "US/Pacific", |
| "US/Samoa", |
| "UTC", |
| "Universal", |
| "W-SU", |
| "WET", |
| "Zulu", |
| nullptr |
| }; |
| |
| // Helper to return a loaded time zone by value (UTC on error). |
| time_zone LoadZone(const std::string& name) { |
| time_zone tz; |
| load_time_zone(name, &tz); |
| return tz; |
| } |
| |
| // This helper is a macro so that failed expectations show up with the |
| // correct line numbers. |
| #define ExpectTime(tp, tz, y, m, d, hh, mm, ss, off, isdst, zone) \ |
| do { \ |
| time_zone::absolute_lookup al = tz.lookup(tp); \ |
| EXPECT_EQ(y, al.cs.year()); \ |
| EXPECT_EQ(m, al.cs.month()); \ |
| EXPECT_EQ(d, al.cs.day()); \ |
| EXPECT_EQ(hh, al.cs.hour()); \ |
| EXPECT_EQ(mm, al.cs.minute()); \ |
| EXPECT_EQ(ss, al.cs.second()); \ |
| EXPECT_EQ(off, al.offset); \ |
| EXPECT_TRUE(isdst == al.is_dst); \ |
| /* EXPECT_STREQ(zone, al.abbr); */ \ |
| } while (0) |
| |
| // These tests sometimes run on platforms that have zoneinfo data so old |
| // that the transition we are attempting to check does not exist, most |
| // notably Android emulators. Fortunately, AndroidZoneInfoSource supports |
| // time_zone::version() so, in cases where we've learned that it matters, |
| // we can make the check conditionally. |
| int VersionCmp(time_zone tz, const std::string& target) { |
| std::string version = tz.version(); |
| if (version.empty() && !target.empty()) return 1; // unknown > known |
| return version.compare(target); |
| } |
| |
| } // namespace |
| |
| TEST(TimeZones, LoadZonesConcurrently) { |
| std::promise<void> ready_promise; |
| std::shared_future<void> ready_future(ready_promise.get_future()); |
| auto load_zones = [ready_future](std::promise<void>* started, |
| std::set<std::string>* failures) { |
| started->set_value(); |
| ready_future.wait(); |
| for (const char* const* np = kTimeZoneNames; *np != nullptr; ++np) { |
| std::string zone = *np; |
| time_zone tz; |
| if (load_time_zone(zone, &tz)) { |
| EXPECT_EQ(zone, tz.name()); |
| } else { |
| failures->insert(zone); |
| } |
| } |
| }; |
| |
| const std::size_t n_threads = 128; |
| std::vector<std::thread> threads; |
| std::vector<std::set<std::string>> thread_failures(n_threads); |
| for (std::size_t i = 0; i != n_threads; ++i) { |
| std::promise<void> started; |
| threads.emplace_back(load_zones, &started, &thread_failures[i]); |
| started.get_future().wait(); |
| } |
| ready_promise.set_value(); |
| for (auto& thread : threads) { |
| thread.join(); |
| } |
| |
| // Allow a small number of failures to account for skew between |
| // the contents of kTimeZoneNames and the zoneinfo data source. |
| #if defined(__ANDROID__) |
| // Cater to the possibility of using an even older zoneinfo data |
| // source when running on Android, where it is difficult to override |
| // the bionic tzdata provided by the test environment. |
| const std::size_t max_failures = 20; |
| #else |
| const std::size_t max_failures = 3; |
| #endif |
| std::set<std::string> failures; |
| for (const auto& thread_failure : thread_failures) { |
| failures.insert(thread_failure.begin(), thread_failure.end()); |
| } |
| EXPECT_LE(failures.size(), max_failures) << testing::PrintToString(failures); |
| } |
| |
| TEST(TimeZone, NamedTimeZones) { |
| const time_zone utc = utc_time_zone(); |
| EXPECT_EQ("UTC", utc.name()); |
| const time_zone nyc = LoadZone("America/New_York"); |
| EXPECT_EQ("America/New_York", nyc.name()); |
| const time_zone syd = LoadZone("Australia/Sydney"); |
| EXPECT_EQ("Australia/Sydney", syd.name()); |
| const time_zone fixed0 = fixed_time_zone(absl::time_internal::cctz::seconds::zero()); |
| EXPECT_EQ("UTC", fixed0.name()); |
| const time_zone fixed_pos = fixed_time_zone( |
| chrono::hours(3) + chrono::minutes(25) + chrono::seconds(45)); |
| EXPECT_EQ("Fixed/UTC+03:25:45", fixed_pos.name()); |
| const time_zone fixed_neg = fixed_time_zone( |
| -(chrono::hours(12) + chrono::minutes(34) + chrono::seconds(56))); |
| EXPECT_EQ("Fixed/UTC-12:34:56", fixed_neg.name()); |
| } |
| |
| TEST(TimeZone, Failures) { |
| time_zone tz; |
| EXPECT_FALSE(load_time_zone(":America/Los_Angeles", &tz)); |
| |
| tz = LoadZone("America/Los_Angeles"); |
| EXPECT_FALSE(load_time_zone("Invalid/TimeZone", &tz)); |
| EXPECT_EQ(chrono::system_clock::from_time_t(0), |
| convert(civil_second(1970, 1, 1, 0, 0, 0), tz)); // UTC |
| |
| // Ensures that the load still fails on a subsequent attempt. |
| tz = LoadZone("America/Los_Angeles"); |
| EXPECT_FALSE(load_time_zone("Invalid/TimeZone", &tz)); |
| EXPECT_EQ(chrono::system_clock::from_time_t(0), |
| convert(civil_second(1970, 1, 1, 0, 0, 0), tz)); // UTC |
| |
| // Loading an empty std::string timezone should fail. |
| tz = LoadZone("America/Los_Angeles"); |
| EXPECT_FALSE(load_time_zone("", &tz)); |
| EXPECT_EQ(chrono::system_clock::from_time_t(0), |
| convert(civil_second(1970, 1, 1, 0, 0, 0), tz)); // UTC |
| } |
| |
| TEST(TimeZone, Equality) { |
| const time_zone a; |
| const time_zone b; |
| EXPECT_EQ(a, b); |
| EXPECT_EQ(a.name(), b.name()); |
| |
| const time_zone implicit_utc; |
| const time_zone explicit_utc = utc_time_zone(); |
| EXPECT_EQ(implicit_utc, explicit_utc); |
| EXPECT_EQ(implicit_utc.name(), explicit_utc.name()); |
| |
| const time_zone fixed_zero = fixed_time_zone(absl::time_internal::cctz::seconds::zero()); |
| EXPECT_EQ(fixed_zero, LoadZone(fixed_zero.name())); |
| EXPECT_EQ(fixed_zero, explicit_utc); |
| |
| const time_zone fixed_utc = LoadZone("Fixed/UTC+00:00:00"); |
| EXPECT_EQ(fixed_utc, LoadZone(fixed_utc.name())); |
| EXPECT_EQ(fixed_utc, explicit_utc); |
| |
| const time_zone fixed_pos = fixed_time_zone( |
| chrono::hours(3) + chrono::minutes(25) + chrono::seconds(45)); |
| EXPECT_EQ(fixed_pos, LoadZone(fixed_pos.name())); |
| EXPECT_NE(fixed_pos, explicit_utc); |
| const time_zone fixed_neg = fixed_time_zone( |
| -(chrono::hours(12) + chrono::minutes(34) + chrono::seconds(56))); |
| EXPECT_EQ(fixed_neg, LoadZone(fixed_neg.name())); |
| EXPECT_NE(fixed_neg, explicit_utc); |
| |
| const time_zone fixed_lim = fixed_time_zone(chrono::hours(24)); |
| EXPECT_EQ(fixed_lim, LoadZone(fixed_lim.name())); |
| EXPECT_NE(fixed_lim, explicit_utc); |
| const time_zone fixed_ovfl = |
| fixed_time_zone(chrono::hours(24) + chrono::seconds(1)); |
| EXPECT_EQ(fixed_ovfl, LoadZone(fixed_ovfl.name())); |
| EXPECT_EQ(fixed_ovfl, explicit_utc); |
| |
| EXPECT_EQ(fixed_time_zone(chrono::seconds(1)), |
| fixed_time_zone(chrono::seconds(1))); |
| |
| const time_zone local = local_time_zone(); |
| EXPECT_EQ(local, LoadZone(local.name())); |
| |
| time_zone la = LoadZone("America/Los_Angeles"); |
| time_zone nyc = LoadZone("America/New_York"); |
| EXPECT_NE(la, nyc); |
| } |
| |
| TEST(StdChronoTimePoint, TimeTAlignment) { |
| // Ensures that the Unix epoch and the system clock epoch are an integral |
| // number of seconds apart. This simplifies conversions to/from time_t. |
| auto diff = chrono::system_clock::time_point() - |
| chrono::system_clock::from_time_t(0); |
| EXPECT_EQ(chrono::system_clock::time_point::duration::zero(), |
| diff % chrono::seconds(1)); |
| } |
| |
| TEST(BreakTime, TimePointResolution) { |
| const time_zone utc = utc_time_zone(); |
| const auto t0 = chrono::system_clock::from_time_t(0); |
| |
| ExpectTime(chrono::time_point_cast<chrono::nanoseconds>(t0), utc, |
| 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); |
| ExpectTime(chrono::time_point_cast<chrono::microseconds>(t0), utc, |
| 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); |
| ExpectTime(chrono::time_point_cast<chrono::milliseconds>(t0), utc, |
| 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); |
| ExpectTime(chrono::time_point_cast<chrono::seconds>(t0), utc, |
| 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); |
| ExpectTime(chrono::time_point_cast<absl::time_internal::cctz::seconds>(t0), utc, |
| 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); |
| ExpectTime(chrono::time_point_cast<chrono::minutes>(t0), utc, |
| 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); |
| ExpectTime(chrono::time_point_cast<chrono::hours>(t0), utc, |
| 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); |
| } |
| |
| TEST(BreakTime, LocalTimeInUTC) { |
| const time_zone tz = utc_time_zone(); |
| const auto tp = chrono::system_clock::from_time_t(0); |
| ExpectTime(tp, tz, 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); |
| EXPECT_EQ(weekday::thursday, get_weekday(civil_day(convert(tp, tz)))); |
| } |
| |
| TEST(BreakTime, LocalTimeInUTCUnaligned) { |
| const time_zone tz = utc_time_zone(); |
| const auto tp = |
| chrono::system_clock::from_time_t(0) - chrono::milliseconds(500); |
| ExpectTime(tp, tz, 1969, 12, 31, 23, 59, 59, 0, false, "UTC"); |
| EXPECT_EQ(weekday::wednesday, get_weekday(civil_day(convert(tp, tz)))); |
| } |
| |
| TEST(BreakTime, LocalTimePosix) { |
| // See IEEE Std 1003.1-1988 B.2.3 General Terms, Epoch. |
| const time_zone tz = utc_time_zone(); |
| const auto tp = chrono::system_clock::from_time_t(536457599); |
| ExpectTime(tp, tz, 1986, 12, 31, 23, 59, 59, 0, false, "UTC"); |
| EXPECT_EQ(weekday::wednesday, get_weekday(civil_day(convert(tp, tz)))); |
| } |
| |
| TEST(TimeZoneImpl, LocalTimeInFixed) { |
| const absl::time_internal::cctz::seconds offset = |
| -(chrono::hours(8) + chrono::minutes(33) + chrono::seconds(47)); |
| const time_zone tz = fixed_time_zone(offset); |
| const auto tp = chrono::system_clock::from_time_t(0); |
| ExpectTime(tp, tz, 1969, 12, 31, 15, 26, 13, offset.count(), false, |
| "-083347"); |
| EXPECT_EQ(weekday::wednesday, get_weekday(civil_day(convert(tp, tz)))); |
| } |
| |
| TEST(BreakTime, LocalTimeInNewYork) { |
| const time_zone tz = LoadZone("America/New_York"); |
| const auto tp = chrono::system_clock::from_time_t(45); |
| ExpectTime(tp, tz, 1969, 12, 31, 19, 0, 45, -5 * 60 * 60, false, "EST"); |
| EXPECT_EQ(weekday::wednesday, get_weekday(civil_day(convert(tp, tz)))); |
| } |
| |
| TEST(BreakTime, LocalTimeInMTV) { |
| const time_zone tz = LoadZone("America/Los_Angeles"); |
| const auto tp = chrono::system_clock::from_time_t(1380855729); |
| ExpectTime(tp, tz, 2013, 10, 3, 20, 2, 9, -7 * 60 * 60, true, "PDT"); |
| EXPECT_EQ(weekday::thursday, get_weekday(civil_day(convert(tp, tz)))); |
| } |
| |
| TEST(BreakTime, LocalTimeInSydney) { |
| const time_zone tz = LoadZone("Australia/Sydney"); |
| const auto tp = chrono::system_clock::from_time_t(90); |
| ExpectTime(tp, tz, 1970, 1, 1, 10, 1, 30, 10 * 60 * 60, false, "AEST"); |
| EXPECT_EQ(weekday::thursday, get_weekday(civil_day(convert(tp, tz)))); |
| } |
| |
| TEST(MakeTime, TimePointResolution) { |
| const time_zone utc = utc_time_zone(); |
| const time_point<chrono::nanoseconds> tp_ns = |
| convert(civil_second(2015, 1, 2, 3, 4, 5), utc); |
| EXPECT_EQ("04:05", format("%M:%E*S", tp_ns, utc)); |
| const time_point<chrono::microseconds> tp_us = |
| convert(civil_second(2015, 1, 2, 3, 4, 5), utc); |
| EXPECT_EQ("04:05", format("%M:%E*S", tp_us, utc)); |
| const time_point<chrono::milliseconds> tp_ms = |
| convert(civil_second(2015, 1, 2, 3, 4, 5), utc); |
| EXPECT_EQ("04:05", format("%M:%E*S", tp_ms, utc)); |
| const time_point<chrono::seconds> tp_s = |
| convert(civil_second(2015, 1, 2, 3, 4, 5), utc); |
| EXPECT_EQ("04:05", format("%M:%E*S", tp_s, utc)); |
| const time_point<absl::time_internal::cctz::seconds> tp_s64 = |
| convert(civil_second(2015, 1, 2, 3, 4, 5), utc); |
| EXPECT_EQ("04:05", format("%M:%E*S", tp_s64, utc)); |
| |
| // These next two require chrono::time_point_cast because the conversion |
| // from a resolution of seconds (the return value of convert()) to a |
| // coarser resolution requires an explicit cast. |
| const time_point<chrono::minutes> tp_m = |
| chrono::time_point_cast<chrono::minutes>( |
| convert(civil_second(2015, 1, 2, 3, 4, 5), utc)); |
| EXPECT_EQ("04:00", format("%M:%E*S", tp_m, utc)); |
| const time_point<chrono::hours> tp_h = |
| chrono::time_point_cast<chrono::hours>( |
| convert(civil_second(2015, 1, 2, 3, 4, 5), utc)); |
| EXPECT_EQ("00:00", format("%M:%E*S", tp_h, utc)); |
| } |
| |
| TEST(MakeTime, Normalization) { |
| const time_zone tz = LoadZone("America/New_York"); |
| const auto tp = convert(civil_second(2009, 2, 13, 18, 31, 30), tz); |
| EXPECT_EQ(chrono::system_clock::from_time_t(1234567890), tp); |
| |
| // Now requests for the same time_point but with out-of-range fields. |
| EXPECT_EQ(tp, convert(civil_second(2008, 14, 13, 18, 31, 30), tz)); // month |
| EXPECT_EQ(tp, convert(civil_second(2009, 1, 44, 18, 31, 30), tz)); // day |
| EXPECT_EQ(tp, convert(civil_second(2009, 2, 12, 42, 31, 30), tz)); // hour |
| EXPECT_EQ(tp, convert(civil_second(2009, 2, 13, 17, 91, 30), tz)); // minute |
| EXPECT_EQ(tp, convert(civil_second(2009, 2, 13, 18, 30, 90), tz)); // second |
| } |
| |
| // NOTE: Run this with -ftrapv to detect overflow problems. |
| TEST(MakeTime, SysSecondsLimits) { |
| const char RFC3339[] = "%Y-%m-%dT%H:%M:%S%Ez"; |
| const time_zone utc = utc_time_zone(); |
| const time_zone east = fixed_time_zone(chrono::hours(14)); |
| const time_zone west = fixed_time_zone(-chrono::hours(14)); |
| time_point<absl::time_internal::cctz::seconds> tp; |
| |
| // Approach the maximal time_point<cctz::seconds> value from below. |
| tp = convert(civil_second(292277026596, 12, 4, 15, 30, 6), utc); |
| EXPECT_EQ("292277026596-12-04T15:30:06+00:00", format(RFC3339, tp, utc)); |
| tp = convert(civil_second(292277026596, 12, 4, 15, 30, 7), utc); |
| EXPECT_EQ("292277026596-12-04T15:30:07+00:00", format(RFC3339, tp, utc)); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); |
| tp = convert(civil_second(292277026596, 12, 4, 15, 30, 8), utc); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); |
| tp = convert(civil_second::max(), utc); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); |
| |
| // Checks that we can also get the maximal value for a far-east zone. |
| tp = convert(civil_second(292277026596, 12, 5, 5, 30, 7), east); |
| EXPECT_EQ("292277026596-12-05T05:30:07+14:00", format(RFC3339, tp, east)); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); |
| tp = convert(civil_second(292277026596, 12, 5, 5, 30, 8), east); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); |
| tp = convert(civil_second::max(), east); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); |
| |
| // Checks that we can also get the maximal value for a far-west zone. |
| tp = convert(civil_second(292277026596, 12, 4, 1, 30, 7), west); |
| EXPECT_EQ("292277026596-12-04T01:30:07-14:00", format(RFC3339, tp, west)); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); |
| tp = convert(civil_second(292277026596, 12, 4, 7, 30, 8), west); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); |
| tp = convert(civil_second::max(), west); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); |
| |
| // Approach the minimal time_point<cctz::seconds> value from above. |
| tp = convert(civil_second(-292277022657, 1, 27, 8, 29, 53), utc); |
| EXPECT_EQ("-292277022657-01-27T08:29:53+00:00", format(RFC3339, tp, utc)); |
| tp = convert(civil_second(-292277022657, 1, 27, 8, 29, 52), utc); |
| EXPECT_EQ("-292277022657-01-27T08:29:52+00:00", format(RFC3339, tp, utc)); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); |
| tp = convert(civil_second(-292277022657, 1, 27, 8, 29, 51), utc); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); |
| tp = convert(civil_second::min(), utc); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); |
| |
| // Checks that we can also get the minimal value for a far-east zone. |
| tp = convert(civil_second(-292277022657, 1, 27, 22, 29, 52), east); |
| EXPECT_EQ("-292277022657-01-27T22:29:52+14:00", format(RFC3339, tp, east)); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); |
| tp = convert(civil_second(-292277022657, 1, 27, 22, 29, 51), east); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); |
| tp = convert(civil_second::min(), east); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); |
| |
| // Checks that we can also get the minimal value for a far-west zone. |
| tp = convert(civil_second(-292277022657, 1, 26, 18, 29, 52), west); |
| EXPECT_EQ("-292277022657-01-26T18:29:52-14:00", format(RFC3339, tp, west)); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); |
| tp = convert(civil_second(-292277022657, 1, 26, 18, 29, 51), west); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); |
| tp = convert(civil_second::min(), west); |
| EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); |
| |
| // Some similar checks for the "libc" time-zone implementation. |
| if (sizeof(std::time_t) >= 8) { |
| // Checks that "tm_year + 1900", as used by the "libc" implementation, |
| // can produce year values beyond the range on an int without overflow. |
| #if defined(_WIN32) || defined(_WIN64) |
| // localtime_s() and gmtime_s() don't believe in years outside [1970:3000]. |
| #else |
| const time_zone utc = LoadZone("libc:UTC"); |
| const year_t max_tm_year = year_t{std::numeric_limits<int>::max()} + 1900; |
| tp = convert(civil_second(max_tm_year, 12, 31, 23, 59, 59), utc); |
| EXPECT_EQ("2147485547-12-31T23:59:59+00:00", format(RFC3339, tp, utc)); |
| const year_t min_tm_year = year_t{std::numeric_limits<int>::min()} + 1900; |
| tp = convert(civil_second(min_tm_year, 1, 1, 0, 0, 0), utc); |
| EXPECT_EQ("-2147481748-01-01T00:00:00+00:00", format(RFC3339, tp, utc)); |
| #endif |
| } |
| } |
| |
| TEST(MakeTime, LocalTimeLibC) { |
| // Checks that cctz and libc agree on transition points in [1970:2037]. |
| // |
| // We limit this test case to environments where: |
| // 1) we know how to change the time zone used by localtime()/mktime(), |
| // 2) cctz and localtime()/mktime() will use similar-enough tzdata, and |
| // 3) we have some idea about how mktime() behaves during transitions. |
| #if defined(__linux__) |
| const char* const ep = getenv("TZ"); |
| std::string tz_name = (ep != nullptr) ? ep : ""; |
| for (const char* const* np = kTimeZoneNames; *np != nullptr; ++np) { |
| ASSERT_EQ(0, setenv("TZ", *np, 1)); // change what "localtime" means |
| const auto zi = local_time_zone(); |
| const auto lc = LoadZone("libc:localtime"); |
| time_zone::civil_transition trans; |
| for (auto tp = zi.lookup(civil_second()).trans; |
| zi.next_transition(tp, &trans); |
| tp = zi.lookup(trans.to).trans) { |
| const auto fcl = zi.lookup(trans.from); |
| const auto tcl = zi.lookup(trans.to); |
| civil_second cs; // compare cs in zi and lc |
| if (fcl.kind == time_zone::civil_lookup::UNIQUE) { |
| if (tcl.kind == time_zone::civil_lookup::UNIQUE) { |
| // Both unique; must be an is_dst or abbr change. |
| ASSERT_EQ(trans.from, trans.to); |
| const auto trans = fcl.trans; |
| const auto tal = zi.lookup(trans); |
| const auto tprev = trans - absl::time_internal::cctz::seconds(1); |
| const auto pal = zi.lookup(tprev); |
| if (pal.is_dst == tal.is_dst) { |
| ASSERT_STRNE(pal.abbr, tal.abbr); |
| } |
| continue; |
| } |
| ASSERT_EQ(time_zone::civil_lookup::REPEATED, tcl.kind); |
| cs = trans.to; |
| } else { |
| ASSERT_EQ(time_zone::civil_lookup::UNIQUE, tcl.kind); |
| ASSERT_EQ(time_zone::civil_lookup::SKIPPED, fcl.kind); |
| cs = trans.from; |
| } |
| if (cs.year() > 2037) break; // limit test time (and to 32-bit time_t) |
| const auto cl_zi = zi.lookup(cs); |
| if (zi.lookup(cl_zi.pre).is_dst == zi.lookup(cl_zi.post).is_dst) { |
| // The "libc" implementation cannot correctly classify transitions |
| // that don't change the "tm_isdst" flag. In Europe/Volgograd, for |
| // example, there is a SKIPPED transition from +03 to +04 with dst=F |
| // on both sides ... |
| // 1540681199 = 2018-10-28 01:59:59 +03:00:00 [dst=F off=10800] |
| // 1540681200 = 2018-10-28 03:00:00 +04:00:00 [dst=F off=14400] |
| // but std::mktime(2018-10-28 02:00:00, tm_isdst=0) fails, unlike, |
| // say, the similar Europe/Chisinau transition from +02 to +03 ... |
| // 1521935999 = 2018-03-25 01:59:59 +02:00:00 [dst=F off=7200] |
| // 1521936000 = 2018-03-25 03:00:00 +03:00:00 [dst=T off=10800] |
| // where std::mktime(2018-03-25 02:00:00, tm_isdst=0) succeeds and |
| // returns 1521936000. |
| continue; |
| } |
| if (cs == civil_second(2037, 10, 4, 2, 0, 0)) { |
| const std::string tzname = *np; |
| if (tzname == "Africa/Casablanca" || tzname == "Africa/El_Aaiun") { |
| // The "libc" implementation gets this transition wrong (at least |
| // until 2018g when it was removed), returning an offset of 3600 |
| // instead of 0. TODO: Revert this when 2018g is ubiquitous. |
| continue; |
| } |
| } |
| const auto cl_lc = lc.lookup(cs); |
| SCOPED_TRACE(testing::Message() << "For " << cs << " in " << *np); |
| EXPECT_EQ(cl_zi.kind, cl_lc.kind); |
| EXPECT_EQ(cl_zi.pre, cl_lc.pre); |
| EXPECT_EQ(cl_zi.trans, cl_lc.trans); |
| EXPECT_EQ(cl_zi.post, cl_lc.post); |
| } |
| } |
| if (ep == nullptr) { |
| ASSERT_EQ(0, unsetenv("TZ")); |
| } else { |
| ASSERT_EQ(0, setenv("TZ", tz_name.c_str(), 1)); |
| } |
| #endif |
| } |
| |
| TEST(NextTransition, UTC) { |
| const auto tz = utc_time_zone(); |
| time_zone::civil_transition trans; |
| |
| auto tp = time_point<absl::time_internal::cctz::seconds>::min(); |
| EXPECT_FALSE(tz.next_transition(tp, &trans)); |
| |
| tp = time_point<absl::time_internal::cctz::seconds>::max(); |
| EXPECT_FALSE(tz.next_transition(tp, &trans)); |
| } |
| |
| TEST(PrevTransition, UTC) { |
| const auto tz = utc_time_zone(); |
| time_zone::civil_transition trans; |
| |
| auto tp = time_point<absl::time_internal::cctz::seconds>::max(); |
| EXPECT_FALSE(tz.prev_transition(tp, &trans)); |
| |
| tp = time_point<absl::time_internal::cctz::seconds>::min(); |
| EXPECT_FALSE(tz.prev_transition(tp, &trans)); |
| } |
| |
| TEST(NextTransition, AmericaNewYork) { |
| const auto tz = LoadZone("America/New_York"); |
| time_zone::civil_transition trans; |
| |
| auto tp = convert(civil_second(2018, 6, 30, 0, 0, 0), tz); |
| EXPECT_TRUE(tz.next_transition(tp, &trans)); |
| EXPECT_EQ(civil_second(2018, 11, 4, 2, 0, 0), trans.from); |
| EXPECT_EQ(civil_second(2018, 11, 4, 1, 0, 0), trans.to); |
| |
| tp = time_point<absl::time_internal::cctz::seconds>::max(); |
| EXPECT_FALSE(tz.next_transition(tp, &trans)); |
| |
| tp = time_point<absl::time_internal::cctz::seconds>::min(); |
| EXPECT_TRUE(tz.next_transition(tp, &trans)); |
| if (trans.from == civil_second(1918, 3, 31, 2, 0, 0)) { |
| // It looks like the tzdata is only 32 bit (probably macOS), |
| // which bottoms out at 1901-12-13T20:45:52+00:00. |
| EXPECT_EQ(civil_second(1918, 3, 31, 3, 0, 0), trans.to); |
| } else { |
| EXPECT_EQ(civil_second(1883, 11, 18, 12, 3, 58), trans.from); |
| EXPECT_EQ(civil_second(1883, 11, 18, 12, 0, 0), trans.to); |
| } |
| } |
| |
| TEST(PrevTransition, AmericaNewYork) { |
| const auto tz = LoadZone("America/New_York"); |
| time_zone::civil_transition trans; |
| |
| auto tp = convert(civil_second(2018, 6, 30, 0, 0, 0), tz); |
| EXPECT_TRUE(tz.prev_transition(tp, &trans)); |
| EXPECT_EQ(civil_second(2018, 3, 11, 2, 0, 0), trans.from); |
| EXPECT_EQ(civil_second(2018, 3, 11, 3, 0, 0), trans.to); |
| |
| tp = time_point<absl::time_internal::cctz::seconds>::min(); |
| EXPECT_FALSE(tz.prev_transition(tp, &trans)); |
| |
| tp = time_point<absl::time_internal::cctz::seconds>::max(); |
| EXPECT_TRUE(tz.prev_transition(tp, &trans)); |
| // We have a transition but we don't know which one. |
| } |
| |
| TEST(TimeZoneEdgeCase, AmericaNewYork) { |
| const time_zone tz = LoadZone("America/New_York"); |
| |
| // Spring 1:59:59 -> 3:00:00 |
| auto tp = convert(civil_second(2013, 3, 10, 1, 59, 59), tz); |
| ExpectTime(tp, tz, 2013, 3, 10, 1, 59, 59, -5 * 3600, false, "EST"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 2013, 3, 10, 3, 0, 0, -4 * 3600, true, "EDT"); |
| |
| // Fall 1:59:59 -> 1:00:00 |
| tp = convert(civil_second(2013, 11, 3, 1, 59, 59), tz); |
| ExpectTime(tp, tz, 2013, 11, 3, 1, 59, 59, -4 * 3600, true, "EDT"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 2013, 11, 3, 1, 0, 0, -5 * 3600, false, "EST"); |
| } |
| |
| TEST(TimeZoneEdgeCase, AmericaLosAngeles) { |
| const time_zone tz = LoadZone("America/Los_Angeles"); |
| |
| // Spring 1:59:59 -> 3:00:00 |
| auto tp = convert(civil_second(2013, 3, 10, 1, 59, 59), tz); |
| ExpectTime(tp, tz, 2013, 3, 10, 1, 59, 59, -8 * 3600, false, "PST"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 2013, 3, 10, 3, 0, 0, -7 * 3600, true, "PDT"); |
| |
| // Fall 1:59:59 -> 1:00:00 |
| tp = convert(civil_second(2013, 11, 3, 1, 59, 59), tz); |
| ExpectTime(tp, tz, 2013, 11, 3, 1, 59, 59, -7 * 3600, true, "PDT"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 2013, 11, 3, 1, 0, 0, -8 * 3600, false, "PST"); |
| } |
| |
| TEST(TimeZoneEdgeCase, ArizonaNoTransition) { |
| const time_zone tz = LoadZone("America/Phoenix"); |
| |
| // No transition in Spring. |
| auto tp = convert(civil_second(2013, 3, 10, 1, 59, 59), tz); |
| ExpectTime(tp, tz, 2013, 3, 10, 1, 59, 59, -7 * 3600, false, "MST"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 2013, 3, 10, 2, 0, 0, -7 * 3600, false, "MST"); |
| |
| // No transition in Fall. |
| tp = convert(civil_second(2013, 11, 3, 1, 59, 59), tz); |
| ExpectTime(tp, tz, 2013, 11, 3, 1, 59, 59, -7 * 3600, false, "MST"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 2013, 11, 3, 2, 0, 0, -7 * 3600, false, "MST"); |
| } |
| |
| TEST(TimeZoneEdgeCase, AsiaKathmandu) { |
| const time_zone tz = LoadZone("Asia/Kathmandu"); |
| |
| // A non-DST offset change from +0530 to +0545 |
| // |
| // 504901799 == Tue, 31 Dec 1985 23:59:59 +0530 (+0530) |
| // 504901800 == Wed, 1 Jan 1986 00:15:00 +0545 (+0545) |
| auto tp = convert(civil_second(1985, 12, 31, 23, 59, 59), tz); |
| ExpectTime(tp, tz, 1985, 12, 31, 23, 59, 59, 5.5 * 3600, false, "+0530"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 1986, 1, 1, 0, 15, 0, 5.75 * 3600, false, "+0545"); |
| } |
| |
| TEST(TimeZoneEdgeCase, PacificChatham) { |
| const time_zone tz = LoadZone("Pacific/Chatham"); |
| |
| // One-hour DST offset changes, but at atypical values |
| // |
| // 1365256799 == Sun, 7 Apr 2013 03:44:59 +1345 (+1345) |
| // 1365256800 == Sun, 7 Apr 2013 02:45:00 +1245 (+1245) |
| auto tp = convert(civil_second(2013, 4, 7, 3, 44, 59), tz); |
| ExpectTime(tp, tz, 2013, 4, 7, 3, 44, 59, 13.75 * 3600, true, "+1345"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 2013, 4, 7, 2, 45, 0, 12.75 * 3600, false, "+1245"); |
| |
| // 1380376799 == Sun, 29 Sep 2013 02:44:59 +1245 (+1245) |
| // 1380376800 == Sun, 29 Sep 2013 03:45:00 +1345 (+1345) |
| tp = convert(civil_second(2013, 9, 29, 2, 44, 59), tz); |
| ExpectTime(tp, tz, 2013, 9, 29, 2, 44, 59, 12.75 * 3600, false, "+1245"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 2013, 9, 29, 3, 45, 0, 13.75 * 3600, true, "+1345"); |
| } |
| |
| TEST(TimeZoneEdgeCase, AustraliaLordHowe) { |
| const time_zone tz = LoadZone("Australia/Lord_Howe"); |
| |
| // Half-hour DST offset changes |
| // |
| // 1365260399 == Sun, 7 Apr 2013 01:59:59 +1100 (+11) |
| // 1365260400 == Sun, 7 Apr 2013 01:30:00 +1030 (+1030) |
| auto tp = convert(civil_second(2013, 4, 7, 1, 59, 59), tz); |
| ExpectTime(tp, tz, 2013, 4, 7, 1, 59, 59, 11 * 3600, true, "+11"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 2013, 4, 7, 1, 30, 0, 10.5 * 3600, false, "+1030"); |
| |
| // 1380986999 == Sun, 6 Oct 2013 01:59:59 +1030 (+1030) |
| // 1380987000 == Sun, 6 Oct 2013 02:30:00 +1100 (+11) |
| tp = convert(civil_second(2013, 10, 6, 1, 59, 59), tz); |
| ExpectTime(tp, tz, 2013, 10, 6, 1, 59, 59, 10.5 * 3600, false, "+1030"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 2013, 10, 6, 2, 30, 0, 11 * 3600, true, "+11"); |
| } |
| |
| TEST(TimeZoneEdgeCase, PacificApia) { |
| const time_zone tz = LoadZone("Pacific/Apia"); |
| |
| // At the end of December 2011, Samoa jumped forward by one day, |
| // skipping 30 December from the local calendar, when the nation |
| // moved to the west of the International Date Line. |
| // |
| // A one-day, non-DST offset change |
| // |
| // 1325239199 == Thu, 29 Dec 2011 23:59:59 -1000 (-10) |
| // 1325239200 == Sat, 31 Dec 2011 00:00:00 +1400 (+14) |
| auto tp = convert(civil_second(2011, 12, 29, 23, 59, 59), tz); |
| ExpectTime(tp, tz, 2011, 12, 29, 23, 59, 59, -10 * 3600, true, "-10"); |
| EXPECT_EQ(363, get_yearday(civil_day(convert(tp, tz)))); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 2011, 12, 31, 0, 0, 0, 14 * 3600, true, "+14"); |
| EXPECT_EQ(365, get_yearday(civil_day(convert(tp, tz)))); |
| } |
| |
| TEST(TimeZoneEdgeCase, AfricaCairo) { |
| const time_zone tz = LoadZone("Africa/Cairo"); |
| |
| if (VersionCmp(tz, "2014c") >= 0) { |
| // An interesting case of midnight not existing. |
| // |
| // 1400191199 == Thu, 15 May 2014 23:59:59 +0200 (EET) |
| // 1400191200 == Fri, 16 May 2014 01:00:00 +0300 (EEST) |
| auto tp = convert(civil_second(2014, 5, 15, 23, 59, 59), tz); |
| ExpectTime(tp, tz, 2014, 5, 15, 23, 59, 59, 2 * 3600, false, "EET"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 2014, 5, 16, 1, 0, 0, 3 * 3600, true, "EEST"); |
| } |
| } |
| |
| TEST(TimeZoneEdgeCase, AfricaMonrovia) { |
| const time_zone tz = LoadZone("Africa/Monrovia"); |
| |
| if (VersionCmp(tz, "2017b") >= 0) { |
| // Strange offset change -00:44:30 -> +00:00:00 (non-DST) |
| // |
| // 63593069 == Thu, 6 Jan 1972 23:59:59 -0044 (MMT) |
| // 63593070 == Fri, 7 Jan 1972 00:44:30 +0000 (GMT) |
| auto tp = convert(civil_second(1972, 1, 6, 23, 59, 59), tz); |
| ExpectTime(tp, tz, 1972, 1, 6, 23, 59, 59, -44.5 * 60, false, "MMT"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 1972, 1, 7, 0, 44, 30, 0 * 60, false, "GMT"); |
| } |
| } |
| |
| TEST(TimeZoneEdgeCase, AmericaJamaica) { |
| // Jamaica discontinued DST transitions in 1983, and is now at a |
| // constant -0500. This makes it an interesting edge-case target. |
| // Note that the 32-bit times used in a (tzh_version == 0) zoneinfo |
| // file cannot represent the abbreviation-only transition of 1890, |
| // so we ignore the abbreviation by expecting what we received. |
| const time_zone tz = LoadZone("America/Jamaica"); |
| |
| // Before the first transition. |
| if (!tz.version().empty() && VersionCmp(tz, "2018d") >= 0) { |
| // We avoid the expectations on the -18430 offset below unless we are |
| // certain we have commit 907241e (Fix off-by-1 error for Jamaica and |
| // T&C before 1913) from 2018d. TODO: Remove the "version() not empty" |
| // part when 2018d is generally available from /usr/share/zoneinfo. |
| auto tp = convert(civil_second(1889, 12, 31, 0, 0, 0), tz); |
| ExpectTime(tp, tz, 1889, 12, 31, 0, 0, 0, -18430, false, |
| tz.lookup(tp).abbr); |
| |
| // Over the first (abbreviation-change only) transition. |
| // -2524503170 == Tue, 31 Dec 1889 23:59:59 -0507 (LMT) |
| // -2524503169 == Wed, 1 Jan 1890 00:00:00 -0507 (KMT) |
| tp = convert(civil_second(1889, 12, 31, 23, 59, 59), tz); |
| ExpectTime(tp, tz, 1889, 12, 31, 23, 59, 59, -18430, false, |
| tz.lookup(tp).abbr); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 1890, 1, 1, 0, 0, 0, -18430, false, "KMT"); |
| } |
| |
| // Over the last (DST) transition. |
| // 436341599 == Sun, 30 Oct 1983 01:59:59 -0400 (EDT) |
| // 436341600 == Sun, 30 Oct 1983 01:00:00 -0500 (EST) |
| auto tp = convert(civil_second(1983, 10, 30, 1, 59, 59), tz); |
| ExpectTime(tp, tz, 1983, 10, 30, 1, 59, 59, -4 * 3600, true, "EDT"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 1983, 10, 30, 1, 0, 0, -5 * 3600, false, "EST"); |
| |
| // After the last transition. |
| tp = convert(civil_second(1983, 12, 31, 23, 59, 59), tz); |
| ExpectTime(tp, tz, 1983, 12, 31, 23, 59, 59, -5 * 3600, false, "EST"); |
| } |
| |
| TEST(TimeZoneEdgeCase, WET) { |
| // Cover some non-existent times within forward transitions. |
| const time_zone tz = LoadZone("WET"); |
| |
| // Before the first transition. |
| auto tp = convert(civil_second(1977, 1, 1, 0, 0, 0), tz); |
| ExpectTime(tp, tz, 1977, 1, 1, 0, 0, 0, 0, false, "WET"); |
| |
| // Over the first transition. |
| // 228877199 == Sun, 3 Apr 1977 00:59:59 +0000 (WET) |
| // 228877200 == Sun, 3 Apr 1977 02:00:00 +0100 (WEST) |
| tp = convert(civil_second(1977, 4, 3, 0, 59, 59), tz); |
| ExpectTime(tp, tz, 1977, 4, 3, 0, 59, 59, 0, false, "WET"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 1977, 4, 3, 2, 0, 0, 1 * 3600, true, "WEST"); |
| |
| // A non-existent time within the first transition. |
| time_zone::civil_lookup cl1 = tz.lookup(civil_second(1977, 4, 3, 1, 15, 0)); |
| EXPECT_EQ(time_zone::civil_lookup::SKIPPED, cl1.kind); |
| ExpectTime(cl1.pre, tz, 1977, 4, 3, 2, 15, 0, 1 * 3600, true, "WEST"); |
| ExpectTime(cl1.trans, tz, 1977, 4, 3, 2, 0, 0, 1 * 3600, true, "WEST"); |
| ExpectTime(cl1.post, tz, 1977, 4, 3, 0, 15, 0, 0 * 3600, false, "WET"); |
| |
| // A non-existent time within the second forward transition. |
| time_zone::civil_lookup cl2 = tz.lookup(civil_second(1978, 4, 2, 1, 15, 0)); |
| EXPECT_EQ(time_zone::civil_lookup::SKIPPED, cl2.kind); |
| ExpectTime(cl2.pre, tz, 1978, 4, 2, 2, 15, 0, 1 * 3600, true, "WEST"); |
| ExpectTime(cl2.trans, tz, 1978, 4, 2, 2, 0, 0, 1 * 3600, true, "WEST"); |
| ExpectTime(cl2.post, tz, 1978, 4, 2, 0, 15, 0, 0 * 3600, false, "WET"); |
| } |
| |
| TEST(TimeZoneEdgeCase, FixedOffsets) { |
| const time_zone gmtm5 = LoadZone("Etc/GMT+5"); // -0500 |
| auto tp = convert(civil_second(1970, 1, 1, 0, 0, 0), gmtm5); |
| ExpectTime(tp, gmtm5, 1970, 1, 1, 0, 0, 0, -5 * 3600, false, "-05"); |
| EXPECT_EQ(chrono::system_clock::from_time_t(5 * 3600), tp); |
| |
| const time_zone gmtp5 = LoadZone("Etc/GMT-5"); // +0500 |
| tp = convert(civil_second(1970, 1, 1, 0, 0, 0), gmtp5); |
| ExpectTime(tp, gmtp5, 1970, 1, 1, 0, 0, 0, 5 * 3600, false, "+05"); |
| EXPECT_EQ(chrono::system_clock::from_time_t(-5 * 3600), tp); |
| } |
| |
| TEST(TimeZoneEdgeCase, NegativeYear) { |
| // Tests transition from year 0 (aka 1BCE) to year -1. |
| const time_zone tz = utc_time_zone(); |
| auto tp = convert(civil_second(0, 1, 1, 0, 0, 0), tz); |
| ExpectTime(tp, tz, 0, 1, 1, 0, 0, 0, 0 * 3600, false, "UTC"); |
| EXPECT_EQ(weekday::saturday, get_weekday(civil_day(convert(tp, tz)))); |
| tp -= absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, -1, 12, 31, 23, 59, 59, 0 * 3600, false, "UTC"); |
| EXPECT_EQ(weekday::friday, get_weekday(civil_day(convert(tp, tz)))); |
| } |
| |
| TEST(TimeZoneEdgeCase, UTC32bitLimit) { |
| const time_zone tz = utc_time_zone(); |
| |
| // Limits of signed 32-bit time_t |
| // |
| // 2147483647 == Tue, 19 Jan 2038 03:14:07 +0000 (UTC) |
| // 2147483648 == Tue, 19 Jan 2038 03:14:08 +0000 (UTC) |
| auto tp = convert(civil_second(2038, 1, 19, 3, 14, 7), tz); |
| ExpectTime(tp, tz, 2038, 1, 19, 3, 14, 7, 0 * 3600, false, "UTC"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 2038, 1, 19, 3, 14, 8, 0 * 3600, false, "UTC"); |
| } |
| |
| TEST(TimeZoneEdgeCase, UTC5DigitYear) { |
| const time_zone tz = utc_time_zone(); |
| |
| // Rollover to 5-digit year |
| // |
| // 253402300799 == Fri, 31 Dec 9999 23:59:59 +0000 (UTC) |
| // 253402300800 == Sat, 1 Jan 1000 00:00:00 +0000 (UTC) |
| auto tp = convert(civil_second(9999, 12, 31, 23, 59, 59), tz); |
| ExpectTime(tp, tz, 9999, 12, 31, 23, 59, 59, 0 * 3600, false, "UTC"); |
| tp += absl::time_internal::cctz::seconds(1); |
| ExpectTime(tp, tz, 10000, 1, 1, 0, 0, 0, 0 * 3600, false, "UTC"); |
| } |
| |
| } // namespace cctz |
| } // namespace time_internal |
| } // inline namespace lts_2018_12_18 |
| } // namespace absl |
