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: no-filesystem
11
12 // Filesystem is supported on Apple platforms starting with macosx10.15.
13 // UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
14
15 // FILE_DEPENDENCIES: test.dat
16
17 // <fstream>
18
19 // template <class charT, class traits = char_traits<charT> >
20 // class basic_ifstream
21
22 // explicit basic_ifstream(const filesystem::path& s,
23 // ios_base::openmode mode = ios_base::in);
24
25 #include <fstream>
26 #include <filesystem>
27 #include <cassert>
28
29 #include "test_macros.h"
30
31 namespace fs = std::filesystem;
32
main(int,char **)33 int main(int, char**) {
34 {
35 fs::path p;
36 static_assert(!std::is_convertible<fs::path, std::ifstream>::value,
37 "ctor should be explicit");
38 static_assert(std::is_constructible<std::ifstream, fs::path const&,
39 std::ios_base::openmode>::value,
40 "");
41 }
42 {
43 std::ifstream fs(fs::path("test.dat"));
44 double x = 0;
45 fs >> x;
46 assert(x == 3.25);
47 }
48 // std::ifstream(const fs::path&, std::ios_base::openmode) is tested in
49 // test/std/input.output/file.streams/fstreams/ofstream.cons/string.pass.cpp
50 // which creates writable files.
51
52 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
53 {
54 std::wifstream fs(fs::path("test.dat"));
55 double x = 0;
56 fs >> x;
57 assert(x == 3.25);
58 }
59 // std::wifstream(const fs::path&, std::ios_base::openmode) is tested in
60 // test/std/input.output/file.streams/fstreams/ofstream.cons/string.pass.cpp
61 // which creates writable files.
62 #endif
63
64 return 0;
65 }
66