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
11 // UNSUPPORTED: availability-filesystem-missing
12
13 // <fstream>
14
15 // basic_filebuf<charT,traits>* open(const filesystem::path& p, ios_base::openmode mode);
16
17 #include <fstream>
18 #include <filesystem>
19 #include <cassert>
20 #include "test_macros.h"
21 #include "platform_support.h"
22
23 namespace fs = std::filesystem;
24
main(int,char **)25 int main(int, char**) {
26
27 fs::path p = get_temp_file_name();
28 {
29 std::filebuf f;
30 assert(f.open(p, std::ios_base::out) != 0);
31 assert(f.is_open());
32 assert(f.sputn("123", 3) == 3);
33 }
34 {
35 std::filebuf f;
36 assert(f.open(p, std::ios_base::in) != 0);
37 assert(f.is_open());
38 assert(f.sbumpc() == '1');
39 assert(f.sbumpc() == '2');
40 assert(f.sbumpc() == '3');
41 }
42 std::remove(p.string().c_str());
43
44 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
45 {
46 std::wfilebuf f;
47 assert(f.open(p, std::ios_base::out) != 0);
48 assert(f.is_open());
49 assert(f.sputn(L"123", 3) == 3);
50 }
51 {
52 std::wfilebuf f;
53 assert(f.open(p, std::ios_base::in) != 0);
54 assert(f.is_open());
55 assert(f.sbumpc() == L'1');
56 assert(f.sbumpc() == L'2');
57 assert(f.sbumpc() == L'3');
58 }
59 std::remove(p.string().c_str());
60 #endif
61
62 return 0;
63 }
64