ctor.local_days.pass.cpp (4335B)
1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17 10 11 // <chrono> 12 // class year_month_weekday; 13 14 // explicit constexpr year_month_weekday(const local_days& dp) noexcept; 15 // 16 // 17 // Effects: Constructs an object of type year_month_weekday that corresponds 18 // to the date represented by dp 19 // 20 // Remarks: Equivalent to constructing with sys_days{dp.time_since_epoch()}. 21 // 22 // constexpr chrono::year year() const noexcept; 23 // constexpr chrono::month month() const noexcept; 24 // constexpr chrono::day day() const noexcept; 25 // constexpr bool ok() const noexcept; 26 27 #include <chrono> 28 #include <type_traits> 29 #include <cassert> 30 31 #include "test_macros.h" 32 33 int main() 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 }