140 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++14, c++1710// UNSUPPORTED: no-filesystem, no-localization, no-tzdb11 12// XFAIL: libcpp-has-no-experimental-tzdb13// XFAIL: availability-tzdb-missing14 15// <chrono>16 17// template<class Duration, class TimeZonePtr = const time_zone*>18// class zoned_time;19//20// zoned_time(const sys_time<Duration>& st);21 22#include <chrono>23#include <cassert>24#include <concepts>25#include <type_traits>26 27#include "../test_offset_time_zone.h"28 29static void test_construction() {30 static_assert(std::constructible_from<std::chrono::zoned_time<std::chrono::seconds>, std::chrono::sys_seconds>);31 std::chrono::zoned_time<std::chrono::seconds> zt{std::chrono::sys_seconds{std::chrono::seconds{42}}};32 assert(zt.get_time_zone() == std::chrono::locate_zone("UTC"));33 assert(zt.get_sys_time() == std::chrono::sys_seconds{std::chrono::seconds{42}});34}35 36static void test_conversion() {37 static_assert(std::convertible_to<std::chrono::sys_seconds, std::chrono::zoned_time<std::chrono::seconds>>);38 std::chrono::zoned_time<std::chrono::seconds> zt = std::chrono::sys_seconds{std::chrono::seconds{42}};39 assert(zt.get_time_zone() == std::chrono::locate_zone("UTC"));40 assert(zt.get_sys_time() == std::chrono::sys_seconds{std::chrono::seconds{42}});41}42 43static void test_duration_conversion() {44 {45 using duration = std::chrono::nanoseconds;46 using time_point = std::chrono::sys_time<duration>;47 std::chrono::zoned_time<duration> zt{time_point{duration{42}}};48 assert(zt.get_sys_time() == time_point{duration{42}});49 }50 {51 using duration = std::chrono::microseconds;52 using time_point = std::chrono::sys_time<duration>;53 std::chrono::zoned_time<duration> zt{time_point{duration{42}}};54 assert(zt.get_sys_time() == time_point{duration{42}});55 }56 {57 using duration = std::chrono::milliseconds;58 using time_point = std::chrono::sys_time<duration>;59 std::chrono::zoned_time<duration> zt{time_point{duration{42}}};60 assert(zt.get_sys_time() == time_point{duration{42}});61 }62 {63 using duration = std::chrono::seconds;64 using time_point = std::chrono::sys_time<duration>;65 std::chrono::zoned_time<duration> zt{time_point{duration{42}}};66 assert(zt.get_sys_time() == time_point{duration{42}});67 }68 {69 using duration = std::chrono::days;70 using time_point = std::chrono::sys_time<duration>;71 std::chrono::zoned_time<duration> zt{time_point{duration{42}}};72 assert(zt.get_sys_time() == std::chrono::sys_seconds{std::chrono::days{42}});73 }74 {75 using duration = std::chrono::weeks;76 using time_point = std::chrono::sys_time<duration>;77 std::chrono::zoned_time<duration> zt{time_point{duration{42}}};78 assert(zt.get_sys_time() == std::chrono::sys_seconds{std::chrono::weeks{42}});79 }80 {81 using duration = std::chrono::months;82 using time_point = std::chrono::sys_time<duration>;83 std::chrono::zoned_time<duration> zt{time_point{duration{42}}};84 assert(zt.get_sys_time() == std::chrono::sys_seconds{std::chrono::months{42}});85 }86 {87 using duration = std::chrono::years;88 using time_point = std::chrono::sys_time<duration>;89 std::chrono::zoned_time<duration> zt{time_point{duration{42}}};90 assert(zt.get_sys_time() == std::chrono::sys_seconds{std::chrono::years{42}});91 }92}93 94static void test_duration_constraints() {95 static_assert(!std::constructible_from<96 std::chrono::zoned_time<std::chrono::seconds, offset_time_zone<offset_time_zone_flags::none>>,97 std::chrono::sys_seconds>);98 99 {100 using type = offset_time_zone<offset_time_zone_flags::has_default_zone>;101 static_assert(102 std::constructible_from<std::chrono::zoned_time<std::chrono::seconds, type>, std::chrono::sys_seconds>);103 104 std::chrono::zoned_time<std::chrono::seconds, type> zt = std::chrono::sys_seconds{std::chrono::seconds{42}};105 106 assert(zt.get_time_zone().offset() == std::chrono::seconds{0});107 assert(zt.get_sys_time() == std::chrono::sys_seconds{std::chrono::seconds{42}});108 }109 110 static_assert(111 !std::constructible_from<112 std::chrono::zoned_time<std::chrono::seconds, offset_time_zone<offset_time_zone_flags::has_locate_zone>>,113 std::chrono::sys_seconds>);114 115 {116 using type = offset_time_zone<offset_time_zone_flags::both>;117 static_assert(118 std::constructible_from<std::chrono::zoned_time<std::chrono::seconds, type>, std::chrono::sys_seconds>);119 120 std::chrono::zoned_time<std::chrono::seconds, type> zt = std::chrono::sys_seconds{std::chrono::seconds{42}};121 122 assert(zt.get_time_zone().offset() == std::chrono::seconds{0});123 assert(zt.get_sys_time() == std::chrono::sys_seconds{std::chrono::seconds{42}});124 }125}126 127// Verify:128// - the results of the constructed object,129// - conversion construction is possible,130// - Duration is converted to zoned_time<>::duration, and131// - whether the constructor's constraints are satisfied.132int main(int, char**) {133 test_construction();134 test_conversion();135 test_duration_conversion();136 test_duration_constraints();137 138 return 0;139}140