76 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_fstream13 14// explicit basic_fstream(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out);15 16#include <fstream>17#include <cassert>18 19#include "test_macros.h"20#include "platform_support.h"21#include "operator_hijacker.h"22 23int main(int, char**)24{25 std::string temp = get_temp_file_name();26 {27 std::fstream fs(temp,28 std::ios_base::in | std::ios_base::out29 | std::ios_base::trunc);30 double x = 0;31 fs << 3.25;32 fs.seekg(0);33 fs >> x;34 assert(x == 3.25);35 }36 std::remove(temp.c_str());37 38 {39 std::basic_fstream<char, operator_hijacker_char_traits<char> > fs(40 temp, std::ios_base::in | std::ios_base::out | std::ios_base::trunc);41 std::basic_string<char, operator_hijacker_char_traits<char> > x;42 fs << "3.25";43 fs.seekg(0);44 fs >> x;45 assert(x == "3.25");46 }47 std::remove(temp.c_str());48 49#ifndef TEST_HAS_NO_WIDE_CHARACTERS50 {51 std::wfstream fs(temp,52 std::ios_base::in | std::ios_base::out53 | std::ios_base::trunc);54 double x = 0;55 fs << 3.25;56 fs.seekg(0);57 fs >> x;58 assert(x == 3.25);59 }60 std::remove(temp.c_str());61 62 {63 std::basic_fstream<wchar_t, operator_hijacker_char_traits<wchar_t> > fs(64 temp, std::ios_base::in | std::ios_base::out | std::ios_base::trunc);65 std::basic_string<wchar_t, operator_hijacker_char_traits<wchar_t> > x;66 fs << L"3.25";67 fs.seekg(0);68 fs >> x;69 assert(x == L"3.25");70 }71 std::remove(temp.c_str());72#endif73 74 return 0;75}76