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 // UNSUPPORTED: c++03, c++11, c++14
10 // UNSUPPORTED: libcpp-has-no-filesystem-library
11 
12 // Filesystem is supported on Apple platforms starting with macosx10.15.
13 // UNSUPPORTED: with_system_cxx_lib=macosx10.14
14 // UNSUPPORTED: with_system_cxx_lib=macosx10.13
15 // UNSUPPORTED: with_system_cxx_lib=macosx10.12
16 // UNSUPPORTED: with_system_cxx_lib=macosx10.11
17 // UNSUPPORTED: with_system_cxx_lib=macosx10.10
18 // UNSUPPORTED: with_system_cxx_lib=macosx10.9
19 
20 // <fstream>
21 
22 // plate <class charT, class traits = char_traits<charT> >
23 // class basic_fstream
24 
25 // explicit basic_fstream(const filesystem::path& s,
26 //     ios_base::openmode mode = ios_base::in|ios_base::out);
27 
28 #include <fstream>
29 #include <filesystem>
30 #include <cassert>
31 #include "test_macros.h"
32 #include "platform_support.h"
33 
34 namespace fs = std::filesystem;
35 
36 int main(int, char**) {
37   fs::path p = get_temp_file_name();
38   {
39     std::fstream fs(p, std::ios_base::in | std::ios_base::out |
40                            std::ios_base::trunc);
41     double x = 0;
42     fs << 3.25;
43     fs.seekg(0);
44     fs >> x;
45     assert(x == 3.25);
46   }
47   std::remove(p.string().c_str());
48   {
49     std::wfstream fs(p, std::ios_base::in | std::ios_base::out |
50                             std::ios_base::trunc);
51     double x = 0;
52     fs << 3.25;
53     fs.seekg(0);
54     fs >> x;
55     assert(x == 3.25);
56   }
57   std::remove(p.string().c_str());
58 
59   return 0;
60 }
61