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 // basic_filebuf<charT,traits>* open(const filesystem::path& p, ios_base::openmode mode); 23 24 #include <fstream> 25 #include <filesystem> 26 #include <cassert> 27 #include "test_macros.h" 28 #include "platform_support.h" 29 30 namespace fs = std::filesystem; 31 32 int main(int, char**) { 33 34 fs::path p = get_temp_file_name(); 35 { 36 std::filebuf f; 37 assert(f.open(p, std::ios_base::out) != 0); 38 assert(f.is_open()); 39 assert(f.sputn("123", 3) == 3); 40 } 41 { 42 std::filebuf f; 43 assert(f.open(p, std::ios_base::in) != 0); 44 assert(f.is_open()); 45 assert(f.sbumpc() == '1'); 46 assert(f.sbumpc() == '2'); 47 assert(f.sbumpc() == '3'); 48 } 49 std::remove(p.string().c_str()); 50 { 51 std::wfilebuf f; 52 assert(f.open(p, std::ios_base::out) != 0); 53 assert(f.is_open()); 54 assert(f.sputn(L"123", 3) == 3); 55 } 56 { 57 std::wfilebuf f; 58 assert(f.open(p, std::ios_base::in) != 0); 59 assert(f.is_open()); 60 assert(f.sbumpc() == L'1'); 61 assert(f.sbumpc() == L'2'); 62 assert(f.sbumpc() == L'3'); 63 } 64 remove(p.string().c_str()); 65 66 return 0; 67 } 68