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: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
14 
15 // <fstream>
16 
17 // plate <class charT, class traits = char_traits<charT> >
18 // class basic_fstream
19 
20 // explicit basic_fstream(const filesystem::path& s,
21 //     ios_base::openmode mode = ios_base::in|ios_base::out);
22 
23 #include <fstream>
24 #include <filesystem>
25 #include <cassert>
26 #include "test_macros.h"
27 #include "platform_support.h"
28 
29 namespace fs = std::filesystem;
30 
31 int main(int, char**) {
32   fs::path p = get_temp_file_name();
33   {
34     std::fstream fs(p, std::ios_base::in | std::ios_base::out |
35                            std::ios_base::trunc);
36     double x = 0;
37     fs << 3.25;
38     fs.seekg(0);
39     fs >> x;
40     assert(x == 3.25);
41   }
42   std::remove(p.string().c_str());
43 
44 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
45   {
46     std::wfstream fs(p, std::ios_base::in | std::ios_base::out |
47                             std::ios_base::trunc);
48     double x = 0;
49     fs << 3.25;
50     fs.seekg(0);
51     fs >> x;
52     assert(x == 3.25);
53   }
54   std::remove(p.string().c_str());
55 #endif
56 
57   return 0;
58 }
59