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-exception
6//
7//===----------------------------------------------------------------------===//
8
9// <fstream>
10
11// template <class charT, class traits = char_traits<charT> >
12// class basic_fstream
13
14// explicit basic_fstream(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out);
15
16// XFAIL: FROZEN-CXX03-HEADERS-FIXME
17
18#include <fstream>
19#include <cassert>
20
21#include "test_macros.h"
22#include "platform_support.h"
23#include "operator_hijacker.h"
24
25int main(int, char**)
26{
27 std::string temp = get_temp_file_name();
28 {
29 std::fstream fs(temp,
30 std::ios_base::in | std::ios_base::out
31 | std::ios_base::trunc);
32 double x = 0;
33 fs << 3.25;
34 fs.seekg(0);
35 fs >> x;
36 assert(x == 3.25);
37 }
38 std::remove(filename: temp.c_str());
39
40 {
41 std::basic_fstream<char, operator_hijacker_char_traits<char> > fs(
42 temp, std::ios_base::in | std::ios_base::out | std::ios_base::trunc);
43 std::basic_string<char, operator_hijacker_char_traits<char> > x;
44 fs << "3.25";
45 fs.seekg(0);
46 fs >> x;
47 assert(x == "3.25");
48 }
49 std::remove(filename: temp.c_str());
50
51#ifndef TEST_HAS_NO_WIDE_CHARACTERS
52 {
53 std::wfstream fs(temp,
54 std::ios_base::in | std::ios_base::out
55 | std::ios_base::trunc);
56 double x = 0;
57 fs << 3.25;
58 fs.seekg(0);
59 fs >> x;
60 assert(x == 3.25);
61 }
62 std::remove(filename: temp.c_str());
63
64 {
65 std::basic_fstream<wchar_t, operator_hijacker_char_traits<wchar_t> > fs(
66 temp, std::ios_base::in | std::ios_base::out | std::ios_base::trunc);
67 std::basic_string<wchar_t, operator_hijacker_char_traits<wchar_t> > x;
68 fs << L"3.25";
69 fs.seekg(0);
70 fs >> x;
71 assert(x == L"3.25");
72 }
73 std::remove(filename: temp.c_str());
74#endif
75
76 return 0;
77}
78

source code of libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/string.pass.cpp