1// Copyright (C) 2005 Free Software Foundation
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 2, 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 COPYING.  If not, write to the Free
16// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
17// USA.
18
19// 27.6.2.4  basic_ostream seek members  [lib.ostream.seeks]
20
21#include <ostream>
22#include <istream>
23#include <sstream>
24#include <testsuite_hooks.h>
25
26const wchar_t* s = L" lootpack, peanut butter wolf, rob swift, madlib, quasimoto";
27const int times = 10;
28
29void write_rewind(std::wiostream& stream)
30{
31  bool test __attribute__((unused)) = true;
32
33  for (int j = 0; j < times; j++)
34    {
35      std::streampos begin = stream.tellp();
36
37      for (int i = 0; i < times; ++i)
38	stream << j << L'-' << i << s << L'\n';
39
40      stream.seekp(begin);
41    }
42  VERIFY( stream.good() );
43}
44
45void check_contents(std::wiostream& stream)
46{
47  bool test __attribute__((unused)) = true;
48
49  stream.clear();
50  stream.seekg(0, std::wios::beg);
51  int i = 0;
52  int loop = times * times + 2;
53  while (i < loop)
54    {
55      stream.ignore(80, L'\n');
56      if (stream.good())
57	++i;
58      else
59	break;
60    }
61  VERIFY( i == times );
62}
63
64// stringstream
65// libstdc++/2346
66// N.B. The original testcase was broken, using tellg/seekg in write_rewind.
67void test03()
68{
69  std::wstringstream sstrm;
70
71  write_rewind(sstrm);
72  check_contents(sstrm);
73}
74
75int main()
76{
77  test03();
78  return 0;
79}
80