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: c++filesystem-disabled
11
12 // <fstream>
13
14 // basic_filebuf<charT,traits>* open(const filesystem::path& p, ios_base::openmode mode);
15
16 #include <fstream>
17 #include <filesystem>
18 #include <cassert>
19 #include "test_macros.h"
20 #include "platform_support.h"
21
22 namespace fs = std::filesystem;
23
main(int,char **)24 int main(int, char**) {
25
26 fs::path p = get_temp_file_name();
27 {
28 std::filebuf f;
29 assert(f.open(p, std::ios_base::out) != 0);
30 assert(f.is_open());
31 assert(f.sputn("123", 3) == 3);
32 }
33 {
34 std::filebuf f;
35 assert(f.open(p, std::ios_base::in) != 0);
36 assert(f.is_open());
37 assert(f.sbumpc() == '1');
38 assert(f.sbumpc() == '2');
39 assert(f.sbumpc() == '3');
40 }
41 std::remove(p.c_str());
42 {
43 std::wfilebuf f;
44 assert(f.open(p, std::ios_base::out) != 0);
45 assert(f.is_open());
46 assert(f.sputn(L"123", 3) == 3);
47 }
48 {
49 std::wfilebuf f;
50 assert(f.open(p, std::ios_base::in) != 0);
51 assert(f.is_open());
52 assert(f.sbumpc() == L'1');
53 assert(f.sbumpc() == L'2');
54 assert(f.sbumpc() == L'3');
55 }
56 remove(p.c_str());
57
58 return 0;
59 }
60