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-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03, c++11, c++14, c++17
10// UNSUPPORTED: no-filesystem, no-localization, no-tzdb
11
12// XFAIL: libcpp-has-no-experimental-tzdb
13// XFAIL: availability-tzdb-missing
14
15// <chrono>
16
17// template<class Duration, class TimeZonePtr = const time_zone*>
18// class zoned_time;
19//
20// zoned_time(string_view name, const local_time<Duration>& st, choose c);
21
22#include <chrono>
23#include <cassert>
24#include <concepts>
25
26#include "../test_offset_time_zone.h"
27
28namespace cr = std::chrono;
29
30int main(int, char**) {
31 // Tests unique conversions. To make sure the test does not depend on changes
32 // in the database it uses a time zone with a fixed offset.
33 {
34 cr::zoned_time<cr::seconds> zt{"Etc/GMT+1", cr::local_seconds{cr::seconds{0}}, cr::choose::earliest};
35
36 assert(zt.get_time_zone() == cr::locate_zone("Etc/GMT+1"));
37 assert(zt.get_sys_time() == cr::sys_seconds{cr::hours{1}});
38 }
39
40 // Tests ambiguous conversions.
41 {
42 // Z Europe/Berlin 0:53:28 - LMT 1893 Ap
43 // ...
44 // 1 DE CE%sT 1980
45 // 1 E CE%sT
46 //
47 // ...
48 // R E 1981 ma - Mar lastSu 1u 1 S
49 // R E 1996 ma - O lastSu 1u 0 -
50
51 using namespace std::literals::chrono_literals;
52 {
53 cr::zoned_time<cr::seconds> zt{
54 "Europe/Berlin",
55 cr::local_seconds{(cr::sys_days{cr::September / 28 / 1986} + 2h + 30min).time_since_epoch()},
56 cr::choose::earliest};
57
58 assert(zt.get_time_zone() == cr::locate_zone("Europe/Berlin"));
59 assert(zt.get_sys_time() == cr::sys_days{cr::September / 28 / 1986} + 0h + 30min);
60 }
61 {
62 cr::zoned_time<cr::seconds> zt{
63 "Europe/Berlin",
64 cr::local_seconds{(cr::sys_days{cr::September / 28 / 1986} + 2h + 30min).time_since_epoch()},
65 cr::choose::latest};
66
67 assert(zt.get_time_zone() == cr::locate_zone("Europe/Berlin"));
68 assert(zt.get_sys_time() == cr::sys_days{cr::September / 28 / 1986} + 1h + 30min);
69 }
70 }
71
72 static_assert(std::constructible_from<cr::zoned_time<cr::seconds, const cr::time_zone*>,
73 std::string_view,
74 cr::local_seconds,
75 cr::choose>);
76
77 static_assert(!std::constructible_from< cr::zoned_time<cr::seconds, offset_time_zone<offset_time_zone_flags::none>>,
78 std::string_view,
79 cr::local_seconds,
80 cr::choose>);
81
82 static_assert(
83 !std::constructible_from< cr::zoned_time<cr::seconds, offset_time_zone<offset_time_zone_flags::has_default_zone>>,
84 std::string_view,
85 cr::local_seconds,
86 cr::choose>);
87
88 static_assert(
89 !std::constructible_from< cr::zoned_time<cr::seconds, offset_time_zone<offset_time_zone_flags::has_locate_zone>>,
90 std::string_view,
91 cr::local_seconds,
92 cr::choose>);
93
94 static_assert(!std::constructible_from< cr::zoned_time<cr::seconds, offset_time_zone<offset_time_zone_flags::both>>,
95 std::string_view,
96 cr::local_seconds,
97 cr::choose>);
98
99 return 0;
100}
101

source code of libcxx/test/std/time/time.zone/time.zone.zonedtime/time.zone.zonedtime.ctor/string_view_local_time_choose.pass.cpp