133 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(streambuf_type* 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_stringbuf<CharT>;34 35 const std::allocator<CharT> alloc;36 {37 OS os = {nullptr, alloc};38 assert(os.get_wrapped() == nullptr);39 assert(os.rdbuf()->get_wrapped() == nullptr);40 assert(os.rdbuf()->get_allocator() == alloc);41 }42 {43 W w;44#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)45 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);46#endif47 {48 OS os = {&w, alloc};49#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)50 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);51#endif52 assert(os.get_wrapped() == &w);53 assert(os.rdbuf()->get_wrapped() == &w);54 assert(os.rdbuf()->get_allocator() == alloc);55 }56#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)57 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);58#endif59 }60 }61 62 {63 using OS = std::basic_osyncstream<CharT, constexpr_char_traits<CharT>>;64 using W = std::basic_stringbuf<CharT, constexpr_char_traits<CharT>>;65 66 const std::allocator<CharT> alloc;67 {68 OS os = {nullptr, alloc};69 assert(os.get_wrapped() == nullptr);70 assert(os.rdbuf()->get_wrapped() == nullptr);71 assert(os.rdbuf()->get_allocator() == alloc);72 }73 {74 W w;75#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)76 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);77#endif78 {79 OS os = {&w, alloc};80#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)81 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);82#endif83 assert(os.get_wrapped() == &w);84 assert(os.rdbuf()->get_wrapped() == &w);85 assert(os.rdbuf()->get_allocator() == alloc);86 }87#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)88 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);89#endif90 }91 }92 93 {94 using OS = std::basic_osyncstream<CharT, constexpr_char_traits<CharT>, test_allocator<CharT>>;95 using W = std::basic_stringbuf<CharT, constexpr_char_traits<CharT>, test_allocator<CharT>>;96 97 const test_allocator<CharT> alloc;98 {99 OS os = {nullptr, alloc};100 assert(os.get_wrapped() == nullptr);101 assert(os.rdbuf()->get_wrapped() == nullptr);102 assert(os.rdbuf()->get_allocator() == alloc);103 }104 {105 W w;106#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)107 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);108#endif109 {110 OS os = {&w, alloc};111#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)112 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);113#endif114 assert(os.get_wrapped() == &w);115 assert(os.rdbuf()->get_wrapped() == &w);116 assert(os.rdbuf()->get_allocator() == alloc);117 }118#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)119 assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);120#endif121 }122 }123}124 125int main(int, char**) {126 test<char>();127#ifndef TEST_HAS_NO_WIDE_CHARACTERS128 test<wchar_t>();129#endif130 131 return 0;132}133