plus.pass.cpp (4985B)
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_last; 13 14 // constexpr year_month_weekday_last operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept; 15 // Returns: (ymwdl.year() / ymwdl.month() + dm) / ymwdl.weekday_last(). 16 // 17 // constexpr year_month_weekday_last operator+(const months& dm, const year_month_weekday_last& ymwdl) noexcept; 18 // Returns: ymwdl + dm. 19 // 20 // constexpr year_month_weekday_last operator+(const year_month_weekday_last& ymwdl, const years& dy) noexcept; 21 // Returns: {ymwdl.year()+dy, ymwdl.month(), ymwdl.weekday_last()}. 22 // 23 // constexpr year_month_weekday_last operator+(const years& dy, const year_month_weekday_last& ymwdl) noexcept; 24 // Returns: ymwdl + dy. 25 26 #include <chrono> 27 #include <type_traits> 28 #include <cassert> 29 30 #include "test_macros.h" 31 32 constexpr bool testConstexprYears(std::chrono::year_month_weekday_last ym) 33 { 34 std::chrono::years offset{23}; 35 if (static_cast<int>((ym ).year()) != 1) return false; 36 if (static_cast<int>((ym + offset).year()) != 24) return false; 37 if (static_cast<int>((offset + ym).year()) != 24) return false; 38 return true; 39 } 40 41 constexpr bool testConstexprMonths(std::chrono::year_month_weekday_last ym) 42 { 43 std::chrono::months offset{6}; 44 if (static_cast<unsigned>((ym ).month()) != 1) return false; 45 if (static_cast<unsigned>((ym + offset).month()) != 7) return false; 46 if (static_cast<unsigned>((offset + ym).month()) != 7) return false; 47 return true; 48 } 49 50 51 int main() 52 { 53 using year = std::chrono::year; 54 using month = std::chrono::month; 55 using weekday = std::chrono::weekday; 56 using weekday_last = std::chrono::weekday_last; 57 using year_month_weekday_last = std::chrono::year_month_weekday_last; 58 using years = std::chrono::years; 59 using months = std::chrono::months; 60 61 constexpr weekday Tuesday = std::chrono::Tuesday; 62 constexpr month January = std::chrono::January; 63 64 { // year_month_weekday_last + months 65 ASSERT_NOEXCEPT(std::declval<year_month_weekday_last>() + std::declval<months>()); 66 ASSERT_NOEXCEPT(std::declval<months>() + std::declval<year_month_weekday_last>()); 67 68 ASSERT_SAME_TYPE(year_month_weekday_last, decltype(std::declval<year_month_weekday_last>() + std::declval<months>())); 69 ASSERT_SAME_TYPE(year_month_weekday_last, decltype(std::declval<months>() + std::declval<year_month_weekday_last>())); 70 71 static_assert(testConstexprMonths(year_month_weekday_last{year{1}, January, weekday_last{Tuesday}}), ""); 72 73 year_month_weekday_last ym{year{1234}, January, weekday_last{Tuesday}}; 74 for (int i = 0; i <= 10; ++i) // TODO test wrap-around 75 { 76 year_month_weekday_last ym1 = ym + months{i}; 77 year_month_weekday_last ym2 = months{i} + ym; 78 assert(ym1.year() == year(1234)); 79 assert(ym2.year() == year(1234)); 80 assert(ym1.month() == month(1 + i)); 81 assert(ym2.month() == month(1 + i)); 82 assert(ym1.weekday() == Tuesday); 83 assert(ym2.weekday() == Tuesday); 84 assert(ym1.weekday_last() == weekday_last{Tuesday}); 85 assert(ym2.weekday_last() == weekday_last{Tuesday}); 86 assert(ym1 == ym2); 87 } 88 } 89 90 { // year_month_weekday_last + years 91 ASSERT_NOEXCEPT(std::declval<year_month_weekday_last>() + std::declval<years>()); 92 ASSERT_NOEXCEPT(std::declval<years>() + std::declval<year_month_weekday_last>()); 93 94 ASSERT_SAME_TYPE(year_month_weekday_last, decltype(std::declval<year_month_weekday_last>() + std::declval<years>())); 95 ASSERT_SAME_TYPE(year_month_weekday_last, decltype(std::declval<years>() + std::declval<year_month_weekday_last>())); 96 97 static_assert(testConstexprYears (year_month_weekday_last{year{1}, January, weekday_last{Tuesday}}), ""); 98 99 year_month_weekday_last ym{year{1234}, std::chrono::January, weekday_last{Tuesday}}; 100 for (int i = 0; i <= 10; ++i) 101 { 102 year_month_weekday_last ym1 = ym + years{i}; 103 year_month_weekday_last ym2 = years{i} + ym; 104 assert(ym1.year() == year(1234 + i)); 105 assert(ym2.year() == year(1234 + i)); 106 assert(ym1.month() == January); 107 assert(ym2.month() == January); 108 assert(ym1.weekday() == Tuesday); 109 assert(ym2.weekday() == Tuesday); 110 assert(ym1.weekday_last() == weekday_last{Tuesday}); 111 assert(ym2.weekday_last() == weekday_last{Tuesday}); 112 assert(ym1 == ym2); 113 } 114 } 115 116 }