1// Copyright (C) 2014-2015 Free Software Foundation, Inc.
2//
3// This file is part of the GNU ISO C++ Library.  This library is free
4// software; you can redistribute it and/or modify it under the
5// terms of the GNU General Public License as published by the
6// Free Software Foundation; either version 3, or (at your option)
7// any later version.
8
9// This library is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13
14// You should have received a copy of the GNU General Public License along
15// with this library; see the file COPYING3.  If not see
16// <http://www.gnu.org/licenses/>.
17
18// { dg-options "-std=gnu++11" }
19// { dg-require-fileio "" }
20
21// 27.9.1.8 Assign and swap [ifstream.assign]
22
23#include <fstream>
24#include <sstream>
25#include <testsuite_hooks.h>
26
27void
28read(std::istream& in, std::ostream& out)
29{
30  std::string s;
31  for (int i=0; i < 10; ++i)
32  {
33    getline(in, s);
34    out << s << '\n';
35  }
36}
37
38void
39test01()
40{
41  std::string const name = "thirty_years_among_the_dead_preproc.txt";
42  std::ostringstream ss0;
43  {
44    std::ifstream f0(name);
45    read(f0, ss0);
46  }
47  {
48    std::ifstream f0(name);
49    std::ifstream f1;
50    f1 = std::move(f0);
51    VERIFY( !f0.is_open() );
52    VERIFY( f1.is_open() );
53    std::ostringstream ss1;
54    read(f1, ss1);
55    VERIFY( ss0.str() == ss1.str() );
56  }
57  {
58    std::ifstream f0(name);
59    std::ifstream f1;
60    f1.swap(f0);
61    VERIFY( !f0.is_open() );
62    VERIFY( f1.is_open() );
63    std::ostringstream ss1;
64    read(f1, ss1);
65    VERIFY( ss0.str() == ss1.str() );
66  }
67}
68
69void
70test02()
71{
72#ifdef _GLIBCXX_USE_WCHAR_T
73  std::wifstream f, f2;
74  f2 = std::move(f);
75  f2.swap(f);
76  swap(f2, f);
77#endif
78}
79
80int
81main()
82{
83  test01();
84  test02();
85}
86