181 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// <fstream>10 11// template <class charT, class traits = char_traits<charT> >12// class basic_ofstream13 14// explicit basic_ofstream(const char* s, ios_base::openmode mode = ios_base::out);15 16// In C++23 and later, this test requires support for P2467R1 in the dylib (a3f17ba3febbd546f2342ffc780ac93b694fdc8d)17// XFAIL: (!c++03 && !c++11 && !c++14 && !c++17 && !c++20) && using-built-library-before-llvm-1818 19// XFAIL: LIBCXX-AIX-FIXME20 21#include <fstream>22#include <cassert>23#include <ios>24 25#include "test_macros.h"26#include "operator_hijacker.h"27#include "platform_support.h"28 29int main(int, char**)30{31 std::string temp = get_temp_file_name();32 33 {34 std::ofstream fs(temp.c_str());35 fs << 3.25;36 }37 {38 std::ifstream fs(temp.c_str());39 double x = 0;40 fs >> x;41 assert(x == 3.25);42 }43 std::remove(temp.c_str());44 45 {46 std::basic_ofstream<char, operator_hijacker_char_traits<char> > fs(temp.c_str());47 fs << "3.25";48 }49 {50 std::ifstream fs(temp.c_str());51 double x = 0;52 fs >> x;53 assert(x == 3.25);54 }55 std::remove(temp.c_str());56 57 {58 std::ofstream fs(temp.c_str(), std::ios_base::out);59 fs << 3.25;60 }61 {62 std::ifstream fs(temp.c_str());63 double x = 0;64 fs >> x;65 assert(x == 3.25);66 }67 std::remove(temp.c_str());68 69 {70 std::basic_ofstream<char, operator_hijacker_char_traits<char> > fs(temp.c_str(), std::ios_base::out);71 fs << "3.25";72 }73 {74 std::ifstream fs(temp.c_str());75 double x = 0;76 fs >> x;77 assert(x == 3.25);78 }79 std::remove(temp.c_str());80#ifndef TEST_HAS_NO_WIDE_CHARACTERS81 {82 std::wofstream fs(temp.c_str());83 fs << 3.25;84 }85 {86 std::wifstream fs(temp.c_str());87 double x = 0;88 fs >> x;89 assert(x == 3.25);90 }91 std::remove(temp.c_str());92 93 {94 std::basic_ofstream<wchar_t, operator_hijacker_char_traits<wchar_t> > fs(temp.c_str());95 fs << L"3.25";96 }97 {98 std::ifstream fs(temp.c_str());99 double x = 0;100 fs >> x;101 assert(x == 3.25);102 }103 std::remove(temp.c_str());104 105 {106 std::wofstream fs(temp.c_str(), std::ios_base::out);107 fs << 3.25;108 }109 {110 std::wifstream fs(temp.c_str());111 double x = 0;112 fs >> x;113 assert(x == 3.25);114 }115 std::remove(temp.c_str());116 117 {118 std::basic_ofstream<wchar_t, operator_hijacker_char_traits<wchar_t> > fs(temp.c_str(), std::ios_base::out);119 fs << L"3.25";120 }121 {122 std::ifstream fs(temp.c_str());123 double x = 0;124 fs >> x;125 assert(x == 3.25);126 }127 std::remove(temp.c_str());128 129#endif130 131#if TEST_STD_VER >= 23132 // Test all the noreplace flag combinations133 {134 std::ios_base::openmode modes[] = {135 std::ios_base::out | std::ios_base::noreplace,136 std::ios_base::out | std::ios_base::trunc | std::ios_base::noreplace,137 std::ios_base::in | std::ios_base::out | std::ios_base::trunc | std::ios_base::noreplace,138 std::ios_base::out | std::ios_base::noreplace | std::ios_base::binary,139 std::ios_base::out | std::ios_base::trunc | std::ios_base::noreplace | std::ios_base::binary,140 std::ios_base::in | std::ios_base::out | std::ios_base::trunc | std::ios_base::noreplace |141 std::ios_base::binary,142 };143 for (auto mode : modes) {144 std::string tmp = get_temp_file_name(); // also creates the file145 146 {147 std::ofstream f(tmp.c_str(), mode);148 assert(!f.is_open()); // since it already exists149 }150 151 {152 std::remove(tmp.c_str());153 154 std::ofstream f(tmp.c_str(), mode);155 assert(f.is_open()); // since it doesn't exist156 }157 }158 159# ifndef TEST_HAS_NO_WIDE_CHARACTERS160 for (auto mode : modes) {161 std::string tmp = get_temp_file_name(); // also creates the file162 163 {164 std::wofstream f(tmp.c_str(), mode);165 assert(!f.is_open()); // since it already exists166 }167 168 {169 std::remove(tmp.c_str());170 171 std::wofstream f(tmp.c_str(), mode);172 assert(f.is_open()); // since it doesn't exist173 }174 }175# endif176 }177#endif // TEST_STD_VER >= 23178 179 return 0;180}181