xref: /llvm-project/libcxx/test/std/input.output/file.streams/fstreams/fstream.assign/move_assign.pass.cpp (revision a8d1182f661ccecd99efd4e543fddf3172c67a95)
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 // <fstream>
10 
11 // template <class charT, class traits = char_traits<charT> >
12 // class basic_fstream
13 
14 // basic_fstream& operator=(basic_fstream&& rhs);
15 
16 #include <fstream>
17 #include <cassert>
18 #include "test_macros.h"
19 #include "platform_support.h"
20 
21 int main(int, char**)
22 {
23     std::string temp = get_temp_file_name();
24     {
25         std::fstream fso(temp.c_str(), std::ios_base::in | std::ios_base::out
26                                                  | std::ios_base::trunc);
27         std::fstream fs;
28         fs = move(fso);
29         double x = 0;
30         fs << 3.25;
31         fs.seekg(0);
32         fs >> x;
33         assert(x == 3.25);
34     }
35     std::remove(temp.c_str());
36     {
37         std::wfstream fso(temp.c_str(), std::ios_base::in | std::ios_base::out
38                                                   | std::ios_base::trunc);
39         std::wfstream fs;
40         fs = move(fso);
41         double x = 0;
42         fs << 3.25;
43         fs.seekg(0);
44         fs >> x;
45         assert(x == 3.25);
46     }
47     std::remove(temp.c_str());
48 
49   return 0;
50 }
51