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; 13 14 // constexpr bool ok() const noexcept; 15 // Returns: m_.ok() && y_.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 year = std::chrono::year; 27 using year_month = std::chrono::year_month; 28 29 constexpr month January = std::chrono::January; 30 31 ASSERT_NOEXCEPT( std::declval<const year_month>().ok()); 32 ASSERT_SAME_TYPE(bool, decltype(std::declval<const year_month>().ok())); 33 34 static_assert(!year_month{year{-32768}, January}.ok(), ""); // Bad year 35 static_assert(!year_month{year{2019}, month{}}.ok(), ""); // Bad month 36 static_assert( year_month{year{2019}, January}.ok(), ""); // Both OK 37 38 for (unsigned i = 0; i <= 50; ++i) 39 { 40 year_month ym{year{2019}, month{i}}; 41 assert( ym.ok() == month{i}.ok()); 42 } 43 44 const int ymax = static_cast<int>(year::max()); 45 for (int i = ymax - 100; i <= ymax + 100; ++i) 46 { 47 year_month ym{year{i}, January}; 48 assert( ym.ok() == year{i}.ok()); 49 } 50 } 51
