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 day; 13 14 // constexpr bool ok() const noexcept; 15 // Returns: 1 <= d_ && d_ <= 31 16 17 #include <chrono> 18 #include <type_traits> 19 #include <cassert> 20 21 #include "test_macros.h" 22 23 int main() 24 { 25 using day = std::chrono::day; 26 ASSERT_NOEXCEPT( std::declval<const day>().ok()); 27 ASSERT_SAME_TYPE(bool, decltype(std::declval<const day>().ok())); 28 29 static_assert(!day{0}.ok(), ""); 30 static_assert( day{1}.ok(), ""); 31 32 assert(!day{0}.ok()); 33 for (unsigned i = 1; i <= 31; ++i) 34 assert(day{i}.ok()); 35 for (unsigned i = 32; i <= 255; ++i) 36 assert(!day{i}.ok()); 37 } 38
