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// template<class Duration2>
21// zoned_time(const zoned_time<Duration2, TimeZonePtr>& y);
22
23#include <chrono>
24#include <concepts>
25#include <cassert>
26
27namespace cr = std::chrono;
28
29int main(int, char**) {
30 // is_convertible_v<sys_time<Duration2>, sys_time<Duration>> is true.
31 {
32 using duration = cr::microseconds;
33 using time_point = cr::sys_time<duration>;
34 cr::zoned_time<duration> zt{time_point{duration{42}}};
35
36 using duration2 = cr::nanoseconds;
37 using time_point2 = cr::sys_time<duration2>;
38 static_assert(std::constructible_from<cr::zoned_time<duration2>, cr::zoned_time<duration>>);
39 cr::zoned_time<duration2> zt2{zt};
40
41 assert(zt2.get_sys_time() == time_point2{duration2{42'000}});
42 }
43 {
44 using duration = cr::milliseconds;
45 using time_point = cr::sys_time<duration>;
46 cr::zoned_time<duration> zt{time_point{duration{42}}};
47
48 using duration2 = cr::nanoseconds;
49 using time_point2 = cr::sys_time<duration2>;
50 static_assert(std::constructible_from<cr::zoned_time<duration2>, cr::zoned_time<duration>>);
51 cr::zoned_time<duration2> zt2{zt};
52
53 assert(zt2.get_sys_time() == time_point2{duration2{42'000'000}});
54 }
55 {
56 using duration = cr::seconds;
57 using time_point = cr::sys_time<duration>;
58 cr::zoned_time<duration> zt{time_point{duration{42}}};
59
60 using duration2 = cr::nanoseconds;
61 using time_point2 = cr::sys_time<duration2>;
62 static_assert(std::constructible_from<cr::zoned_time<duration2>, cr::zoned_time<duration>>);
63 cr::zoned_time<duration2> zt2{zt};
64
65 assert(zt2.get_sys_time() == time_point2{duration2{42'000'000'000}});
66 }
67 // is_convertible_v<sys_time<Duration2>, sys_time<Duration>> is false.
68 {
69 using duration = cr::milliseconds;
70
71 using duration2 = cr::seconds;
72 static_assert(!std::constructible_from<cr::zoned_time<duration2>, cr::zoned_time<duration>>);
73 }
74 {
75 using duration = cr::microseconds;
76
77 using duration2 = cr::seconds;
78 static_assert(!std::constructible_from<cr::zoned_time<duration2>, cr::zoned_time<duration>>);
79 }
80 {
81 using duration = cr::nanoseconds;
82
83 using duration2 = cr::seconds;
84 static_assert(!std::constructible_from<cr::zoned_time<duration2>, cr::zoned_time<duration>>);
85 }
86
87 return 0;
88}
89

source code of libcxx/test/std/time/time.zone/time.zone.zonedtime/time.zone.zonedtime.ctor/zoned_time_duration2.pass.cpp