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// UNSUPPORTED: c++03, c++11, c++14, c++17
9
10// <chrono>
11// class year_month_weekday;
12
13// explicit constexpr year_month_weekday(const local_days& dp) noexcept;
14//
15//
16// Effects: Constructs an object of type year_month_weekday that corresponds
17// to the date represented by dp
18//
19// Remarks: Equivalent to constructing with sys_days{dp.time_since_epoch()}.
20//
21// constexpr chrono::year year() const noexcept;
22// constexpr chrono::month month() const noexcept;
23// constexpr chrono::day day() const noexcept;
24// constexpr bool ok() const noexcept;
25
26#include <chrono>
27#include <cassert>
28#include <type_traits>
29#include <utility>
30
31#include "test_macros.h"
32
33int main(int, char**)
34{
35 using year = std::chrono::year;
36 using days = std::chrono::days;
37 using local_days = std::chrono::local_days;
38 using weekday_indexed = std::chrono::weekday_indexed;
39 using year_month_weekday = std::chrono::year_month_weekday;
40
41 ASSERT_NOEXCEPT(year_month_weekday{std::declval<const local_days>()});
42
43 {
44 constexpr local_days sd{}; // 1-Jan-1970 was a Thursday
45 constexpr year_month_weekday ymwd{sd};
46
47 static_assert( ymwd.ok(), "");
48 static_assert( ymwd.year() == year{1970}, "");
49 static_assert( ymwd.month() == std::chrono::January, "");
50 static_assert( ymwd.weekday() == std::chrono::Thursday, "");
51 static_assert( ymwd.index() == 1, "");
52 static_assert( ymwd.weekday_indexed() == weekday_indexed{std::chrono::Thursday, 1}, "");
53 static_assert( ymwd == year_month_weekday{local_days{ymwd}}, ""); // round trip
54 }
55
56 {
57 constexpr local_days sd{days{10957+32}}; // 2-Feb-2000 was a Wednesday
58 constexpr year_month_weekday ymwd{sd};
59
60 static_assert( ymwd.ok(), "");
61 static_assert( ymwd.year() == year{2000}, "");
62 static_assert( ymwd.month() == std::chrono::February, "");
63 static_assert( ymwd.weekday() == std::chrono::Wednesday, "");
64 static_assert( ymwd.index() == 1, "");
65 static_assert( ymwd.weekday_indexed() == weekday_indexed{std::chrono::Wednesday, 1}, "");
66 static_assert( ymwd == year_month_weekday{local_days{ymwd}}, ""); // round trip
67 }
68
69
70 {
71 constexpr local_days sd{days{-10957}}; // 2-Jan-1940 was a Tuesday
72 constexpr year_month_weekday ymwd{sd};
73
74 static_assert( ymwd.ok(), "");
75 static_assert( ymwd.year() == year{1940}, "");
76 static_assert( ymwd.month() == std::chrono::January, "");
77 static_assert( ymwd.weekday() == std::chrono::Tuesday, "");
78 static_assert( ymwd.index() == 1, "");
79 static_assert( ymwd.weekday_indexed() == weekday_indexed{std::chrono::Tuesday, 1}, "");
80 static_assert( ymwd == year_month_weekday{local_days{ymwd}}, ""); // round trip
81 }
82
83 {
84 local_days sd{days{-(10957+34)}}; // 29-Nov-1939 was a Wednesday
85 year_month_weekday ymwd{sd};
86
87 assert( ymwd.ok());
88 assert( ymwd.year() == year{1939});
89 assert( ymwd.month() == std::chrono::November);
90 assert( ymwd.weekday() == std::chrono::Wednesday);
91 assert( ymwd.index() == 5);
92 assert((ymwd.weekday_indexed() == weekday_indexed{std::chrono::Wednesday, 5}));
93 assert( ymwd == year_month_weekday{local_days{ymwd}}); // round trip
94 }
95
96 return 0;
97}
98

source code of libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ctor.local_days.pass.cpp