plus_minus_equal_year.pass.cpp (3217B)
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 // constexpr year_month_weekday& operator+=(const years& d) noexcept; 15 // constexpr year_month_weekday& operator-=(const years& d) noexcept; 16 17 #include <chrono> 18 #include <type_traits> 19 #include <cassert> 20 21 #include "test_macros.h" 22 23 template <typename D, typename Ds> 24 constexpr bool testConstexpr(D d1) 25 { 26 if (static_cast<int>((d1 ).year()) != 1) return false; 27 if (static_cast<int>((d1 += Ds{ 1}).year()) != 2) return false; 28 if (static_cast<int>((d1 += Ds{ 2}).year()) != 4) return false; 29 if (static_cast<int>((d1 += Ds{12}).year()) != 16) return false; 30 if (static_cast<int>((d1 -= Ds{ 1}).year()) != 15) return false; 31 if (static_cast<int>((d1 -= Ds{ 2}).year()) != 13) return false; 32 if (static_cast<int>((d1 -= Ds{12}).year()) != 1) return false; 33 return true; 34 } 35 36 int main() 37 { 38 using year = std::chrono::year; 39 using month = std::chrono::month; 40 using weekday = std::chrono::weekday; 41 using weekday_indexed = std::chrono::weekday_indexed; 42 using year_month_weekday = std::chrono::year_month_weekday; 43 using years = std::chrono::years; 44 45 ASSERT_NOEXCEPT( std::declval<year_month_weekday&>() += std::declval<years>()); 46 ASSERT_SAME_TYPE(year_month_weekday&, decltype(std::declval<year_month_weekday&>() += std::declval<years>())); 47 48 ASSERT_NOEXCEPT( std::declval<year_month_weekday&>() -= std::declval<years>()); 49 ASSERT_SAME_TYPE(year_month_weekday&, decltype(std::declval<year_month_weekday&>() -= std::declval<years>())); 50 51 constexpr weekday Tuesday = std::chrono::Tuesday; 52 constexpr month January = std::chrono::January; 53 54 static_assert(testConstexpr<year_month_weekday, years>(year_month_weekday{year{1}, January, weekday_indexed{Tuesday, 2}}), ""); 55 56 for (int i = 1000; i <= 1010; ++i) 57 { 58 year_month_weekday ymwd(year{i}, January, weekday_indexed{Tuesday, 2}); 59 60 assert(static_cast<int>((ymwd += years{2}).year()) == i + 2); 61 assert(ymwd.month() == January); 62 assert(ymwd.weekday() == Tuesday); 63 assert(ymwd.index() == 2); 64 65 assert(static_cast<int>((ymwd ).year()) == i + 2); 66 assert(ymwd.month() == January); 67 assert(ymwd.weekday() == Tuesday); 68 assert(ymwd.index() == 2); 69 70 assert(static_cast<int>((ymwd -= years{1}).year()) == i + 1); 71 assert(ymwd.month() == January); 72 assert(ymwd.weekday() == Tuesday); 73 assert(ymwd.index() == 2); 74 75 assert(static_cast<int>((ymwd ).year()) == i + 1); 76 assert(ymwd.month() == January); 77 assert(ymwd.weekday() == Tuesday); 78 assert(ymwd.index() == 2); 79 } 80 }