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*: Change __gnu_cxx_test to __gnu_test.
[thirdparty/gcc.git] / libstdc++-v3 / testsuite / 27_io / basic_filebuf / sungetc / char / 1-in.cc
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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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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[] = "sgetc.txt"; // file with data in it
31
32// Test overloaded virtual functions.
33void test01()
34{
35 using namespace std;
aecf642c 36 using namespace __gnu_test;
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37 typedef std::filebuf::int_type int_type;
38 typedef filebuf::traits_type traits_type;
39
40 bool test = true;
41 int_type c1, c2, c3;
42
43 // int_type sungetc()
44 // if in_cur not avail, return pbackfail(), else decrement and
45 // return to_int_type(*gptr())
46
47 // in
48 {
49 constraint_filebuf fb_01;
50 fb_01.open(name_01, ios::in);
51 VERIFY( !fb_01.write_position() );
52 c1 = fb_01.sbumpc();
53 VERIFY( c1 == '/' );
54 c2 = fb_01.sungetc();
55 VERIFY( c2 == c1 );
56 c3 = fb_01.sgetc();
57 VERIFY( c3 == c2 );
58 fb_01.pubseekoff(2, ios_base::beg, ios_base::in);
59 c1 = fb_01.sgetc();
60 VERIFY( c1 == ' ' );
61 c2 = fb_01.sungetc();
62 VERIFY( c2 == traits_type::not_eof(traits_type::eof()) );
63 VERIFY( !fb_01.write_position() );
64 }
65}
66
67main()
68{
69 test01();
70 return 0;
71}