1// { dg-options "-std=gnu++14" }
2
3// Copyright (C) 2013-2015 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING3.  If not see
18// <http://www.gnu.org/licenses/>.
19
20// inserters
21
22// NB: This file is predicated on sstreams, istreams, and ostreams
23// working, not to mention other major details like char_traits, and
24// all of the string_view class.
25
26#include <experimental/string_view>
27#include <string>
28#include <fstream>
29#include <iostream>
30#include <testsuite_hooks.h>
31
32// testing basic_filebuf::xsputn via stress testing with large string_views
33// based on a bug report libstdc++ 9
34// mode == out
35void
36test05(std::size_t size)
37{
38  bool test [[gnu::unused]] = true;
39
40  const char filename[] = "inserters_extractors-2.txt";
41  const wchar_t fillc = L'f';
42  std::wofstream ofs(filename);
43  std::wstring str(size, fillc);
44  std::experimental::wstring_view strv(str);
45
46  // sanity checks
47  VERIFY( str.size() == size );
48  VERIFY( ofs.good() );
49
50  // stress test
51  ofs << str << std::endl;
52  if (!ofs.good())
53    test = false;
54
55  ofs << str << std::endl;
56  if (!ofs.good())
57    test = false;
58
59  VERIFY( str.size() == size );
60  VERIFY( ofs.good() );
61
62  ofs.close();
63
64  // sanity check on the written file
65  std::wifstream ifs(filename);
66  std::size_t count = 0;
67  wchar_t c;
68  while (count <= (2 * size) + 4)
69    {
70      ifs >> c;
71      if (ifs.good() && c == fillc)
72	{
73	  ++count;
74	  c = '0';
75	}
76      else
77	break;
78    }
79
80  VERIFY( count == 2 * size );
81}
82
83int
84main()
85{
86  test05(1);
87  test05(1000);
88  test05(10000);
89
90  return 0;
91}
92