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 month_weekday_last; 13 14 // constexpr bool ok() const noexcept; 15 // Returns: m_.ok() && wdl_.ok(). 16 17 #include <chrono> 18 #include <type_traits> 19 #include <cassert> 20 21 #include "test_macros.h" 22 23 int main() 24 { 25 using month = std::chrono::month; 26 using weekday = std::chrono::weekday; 27 using weekday_last = std::chrono::weekday_last; 28 using month_weekday_last = std::chrono::month_weekday_last; 29 30 constexpr month January = std::chrono::January; 31 constexpr weekday Tuesday = std::chrono::Tuesday; 32 constexpr weekday_last lastTuesday = weekday_last{Tuesday}; 33 34 ASSERT_NOEXCEPT( std::declval<const month_weekday_last>().ok()); 35 ASSERT_SAME_TYPE(bool, decltype(std::declval<const month_weekday_last>().ok())); 36 37 static_assert(!month_weekday_last{month{}, lastTuesday}.ok(), ""); // Bad month 38 static_assert(!month_weekday_last{January, weekday_last{weekday{12}}}.ok(), ""); // Bad month 39 static_assert( month_weekday_last{January, lastTuesday}.ok(), ""); // Both OK 40 41 for (unsigned i = 0; i <= 50; ++i) 42 { 43 month_weekday_last mwdl{month{i}, lastTuesday}; 44 assert( mwdl.ok() == month{i}.ok()); 45 } 46 47 for (unsigned i = 0; i <= 50; ++i) 48 { 49 month_weekday_last mwdl{January, weekday_last{weekday{i}}}; 50 assert( mwdl.ok() == weekday_last{weekday{i}}.ok()); 51 } 52 } 53
