1// 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
2
3// Copyright (C) 2001, 2002, 2003 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 2, 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 COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21// 27.8.1.4 Overridden virtual functions
22
23#include <fstream>
24#include <testsuite_hooks.h>
25#include <testsuite_io.h>
26
27// @require@ %-*.tst %-*.txt
28// @diff@ %-*.tst %*.txt
29
30const char name_01[] = "filebuf_virtuals-1.txt"; // file with data in it
31const char name_03[] = "tmp_sputn_2io.tst"; // empty file, need to create
32
33void test05()
34{
35  using namespace std;
36  using namespace __gnu_test;
37
38  typedef filebuf::int_type 	int_type;
39  typedef filebuf::traits_type 	traits_type;
40  typedef size_t 			size_type;
41
42  bool test __attribute__((unused)) = true;
43  streamsize 			strmsz_1, strmsz_2;
44
45  // streamsize sputn(const char_typs* s, streamsize n)
46  // write up to n chars to out_cur from s, returning number assigned
47  // NB *sputn will happily put '\0' into your stream if you give it a chance*
48
49  // in | out
50  {
51    constraint_filebuf fb_03;
52    fb_03.pubsetbuf(0, 0);
53    fb_03.open(name_03, ios_base::out | ios_base::in | ios_base::trunc);
54    VERIFY( fb_03.unbuffered() );
55    strmsz_1 = fb_03.sputn("racadabras", 10);//"abracadabras or what?"
56    VERIFY( strmsz_1 == 10 );
57    strmsz_2 = fb_03.sputn(", i wanna reach out and", 10);
58    VERIFY( strmsz_2 == 10 );
59    VERIFY( strmsz_1 == strmsz_2 );
60    VERIFY( fb_03.unbuffered() );
61  }
62}
63
64int main()
65{
66  test05();
67  return 0;
68}
69