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; 13 14 // constexpr bool ok() const noexcept; 15 // Returns: 1 <= d_ && d_ <= 12 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 27 ASSERT_NOEXCEPT( std::declval<const month>().ok()); 28 ASSERT_SAME_TYPE(bool, decltype(std::declval<const month>().ok())); 29 30 static_assert(!month{0}.ok(), ""); 31 static_assert( month{1}.ok(), ""); 32 33 assert(!month{0}.ok()); 34 for (unsigned i = 1; i <= 12; ++i) 35 assert(month{i}.ok()); 36 for (unsigned i = 13; i <= 255; ++i) 37 assert(!month{i}.ok()); 38 } 39
