test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/to_char_type.pass.cpp


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17

// <string>

// template<> struct char_traits<char8_t>

// static constexpr char_type to_char_type(int_type c);

#include <string>
#include <cassert>

#include "test_macros.h"

int main()
{
#if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
    assert(std::char_traits<char8_t>::to_char_type(u8'a') == u8'a');
    assert(std::char_traits<char8_t>::to_char_type(u8'A') == u8'A');
    assert(std::char_traits<char8_t>::to_char_type(0) == 0);
#endif
}