115 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// UNSUPPORTED: libcpp-has-no-experimental-syncstream12 13// <syncstream>14 15// template <class charT, class traits, class Allocator>16// class basic_osyncstream;17 18// basic_osyncstream(basic_ostream& os, const Allocator& allocator);19 20#include <cassert>21#include <concepts>22#include <syncstream>23#include <sstream>24 25#include "test_macros.h"26#include "constexpr_char_traits.h"27#include "test_allocator.h"28 29template <class CharT>30void test() {31 {32 using OS = std::basic_osyncstream<CharT>;33 using W = std::basic_ostringstream<CharT>;34 35 const std::allocator<CharT> alloc;36 37 {38 W w;39#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)40 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 0);41#endif42 {43 OS os = {w, alloc};44#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)45 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 1);46#endif47 assert(os.get_wrapped() == w.rdbuf());48 assert(os.rdbuf()->get_wrapped() == w.rdbuf());49 assert(os.rdbuf()->get_allocator() == alloc);50 }51#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)52 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 0);53#endif54 }55 }56 {57 using OS = std::basic_osyncstream<CharT, constexpr_char_traits<CharT>>;58 using W = std::basic_ostringstream<CharT, constexpr_char_traits<CharT>>;59 60 const std::allocator<CharT> alloc;61 {62 W w;63#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)64 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 0);65#endif66 {67 OS os = {w.rdbuf(), alloc};68#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)69 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 1);70#endif71 assert(os.get_wrapped() == w.rdbuf());72 assert(os.rdbuf()->get_wrapped() == w.rdbuf());73 assert(os.rdbuf()->get_allocator() == alloc);74 }75#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)76 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 0);77#endif78 }79 }80 81 {82 using OS = std::basic_osyncstream<CharT, constexpr_char_traits<CharT>, test_allocator<CharT>>;83 using W = std::basic_ostringstream<CharT, constexpr_char_traits<CharT>, test_allocator<CharT>>;84 85 const test_allocator<CharT> alloc;86 {87 W w;88#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)89 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 0);90#endif91 {92 OS os = {w.rdbuf(), alloc};93#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)94 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 1);95#endif96 assert(os.get_wrapped() == w.rdbuf());97 assert(os.rdbuf()->get_wrapped() == w.rdbuf());98 assert(os.rdbuf()->get_allocator() == alloc);99 }100#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)101 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(w.rdbuf()) == 0);102#endif103 }104 }105}106 107int main(int, char**) {108 test<char>();109#ifndef TEST_HAS_NO_WIDE_CHARACTERS110 test<wchar_t>();111#endif112 113 return 0;114}115