1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: no-filesystem
// Filesystem is supported on Apple platforms starting with macosx10.15.
// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
// FILE_DEPENDENCIES: test.dat
// <fstream>
// template <class charT, class traits = char_traits<charT> >
// class basic_ifstream
// explicit basic_ifstream(const filesystem::path& s,
// ios_base::openmode mode = ios_base::in);
#include <fstream>
#include <filesystem>
#include <cassert>
#include "test_macros.h"
namespace fs = std::filesystem;
int main(int, char**) {
{
fs::path p;
static_assert(!std::is_convertible<fs::path, std::ifstream>::value,
"ctor should be explicit");
static_assert(std::is_constructible<std::ifstream, fs::path const&,
std::ios_base::openmode>::value,
"");
}
{
std::ifstream fs(fs::path("test.dat"));
double x = 0;
fs >> x;
assert(x == 3.25);
}
// std::ifstream(const fs::path&, std::ios_base::openmode) is tested in
// test/std/input.output/file.streams/fstreams/ofstream.cons/string.pass.cpp
// which creates writable files.
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
{
std::wifstream fs(fs::path("test.dat"));
double x = 0;
fs >> x;
assert(x == 3.25);
}
// std::wifstream(const fs::path&, std::ios_base::openmode) is tested in
// test/std/input.output/file.streams/fstreams/ofstream.cons/string.pass.cpp
// which creates writable files.
#endif
return 0;
}
|
