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 // FILE_DEPENDENCIES: test.dat 21 22 // <fstream> 23 24 // template <class charT, class traits = char_traits<charT> > 25 // class basic_ifstream 26 27 // explicit basic_ifstream(const filesystem::path& s, 28 // ios_base::openmode mode = ios_base::in); 29 30 #include <fstream> 31 #include <filesystem> 32 #include <cassert> 33 34 #include "test_macros.h" 35 36 namespace fs = std::filesystem; 37 38 int main(int, char**) { 39 { 40 fs::path p; 41 static_assert(!std::is_convertible<fs::path, std::ifstream>::value, 42 "ctor should be explicit"); 43 static_assert(std::is_constructible<std::ifstream, fs::path const&, 44 std::ios_base::openmode>::value, 45 ""); 46 } 47 { 48 std::ifstream fs(fs::path("test.dat")); 49 double x = 0; 50 fs >> x; 51 assert(x == 3.25); 52 } 53 // std::ifstream(const fs::path&, std::ios_base::openmode) is tested in 54 // test/std/input.output/file.streams/fstreams/ofstream.cons/string.pass.cpp 55 // which creates writable files. 56 { 57 std::wifstream fs(fs::path("test.dat")); 58 double x = 0; 59 fs >> x; 60 assert(x == 3.25); 61 } 62 // std::wifstream(const fs::path&, std::ios_base::openmode) is tested in 63 // test/std/input.output/file.streams/fstreams/ofstream.cons/string.pass.cpp 64 // which creates writable files. 65 66 return 0; 67 } 68