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 // plate <class charT, class traits = char_traits<charT> > 16 // class basic_ofstream 17 18 // void open(const filesystem::path& s, ios_base::openmode mode = ios_base::out); 19 20 #include <fstream> 21 #include <filesystem> 22 #include <cassert> 23 #include "test_macros.h" 24 #include "platform_support.h" 25 26 namespace fs = std::filesystem; 27 main(int,char **)28int main(int, char**) { 29 fs::path p = get_temp_file_name(); 30 { 31 std::ofstream fs; 32 assert(!fs.is_open()); 33 char c = 'a'; 34 fs << c; 35 assert(fs.fail()); 36 fs.open(p); 37 assert(fs.is_open()); 38 fs << c; 39 } 40 { 41 std::ifstream fs(p.c_str()); 42 char c = 0; 43 fs >> c; 44 assert(c == 'a'); 45 } 46 std::remove(p.string().c_str()); 47 48 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 49 { 50 std::wofstream fs; 51 assert(!fs.is_open()); 52 wchar_t c = L'a'; 53 fs << c; 54 assert(fs.fail()); 55 fs.open(p); 56 assert(fs.is_open()); 57 fs << c; 58 } 59 { 60 std::wifstream fs(p.c_str()); 61 wchar_t c = 0; 62 fs >> c; 63 assert(c == L'a'); 64 } 65 std::remove(p.string().c_str()); 66 #endif 67 68 return 0; 69 } 70