54 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++14, c++1710// UNSUPPORTED: no-localization11 12// TODO FMT This test should not require std::to_chars(floating-point)13// XFAIL: availability-fp_to_chars-missing14 15// XFAIL: libcpp-has-no-experimental-tzdb16 17// <chrono>18 19// template<class charT, class traits>20// basic_ostream<charT, traits>&21// operator<<(basic_ostream<charT, traits>& os, const local_info& r);22 23// [time.zone.info.local]24// 3 Effects: Streams out the local_info object r in an unspecified format.25// 4 Returns: os.26//27// There is a private libc++ test that validates the exact output.28 29#include <cassert>30#include <chrono>31#include <memory>32#include <sstream>33 34#include "test_macros.h"35 36template <class CharT>37static void test() {38 using namespace std::literals::chrono_literals;39 std::chrono::sys_info s{std::chrono::sys_seconds{0s}, std::chrono::sys_seconds{0s}, 0h, 0min, ""};40 std::chrono::local_info l{0, s, s};41 std::basic_ostringstream<CharT> os;42 std::basic_ostream<CharT>& result = std::chrono::operator<<(os, l);43 assert(std::addressof(result) == std::addressof(os));44}45 46int main(int, const char**) {47 test<char>();48#ifndef TEST_HAS_NO_WIDE_CHARACTERS49 test<wchar_t>();50#endif51 52 return 0;53}54