2003-07-24 Benjamin Kosnik <bkoz@redhat.com>
[official-gcc.git] / libstdc++-v3 / testsuite / 27_io / basic_filebuf / sputbackc / char / 1-in.cc
blob1d216e8ec207e4b3c45b43b0dcba7bcfa14c1e1c
1 // 2001-05-21 Benjamin Kosnik <bkoz@redhat.com>
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.
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.
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.
21 // 27.8.1.4 Overridden virtual functions
23 #include <fstream>
24 #include <testsuite_hooks.h>
25 #include <testsuite_io.h>
27 // @require@ %-*.tst %-*.txt
28 // @diff@ %-*.tst %*.txt
30 const char name_01[] = "sgetc.txt"; // file with data in it
32 // Test overloaded virtual functions.
33 void test01()
35 using namespace std;
36 using namespace __gnu_test;
37 typedef std::filebuf::int_type int_type;
38 typedef filebuf::traits_type traits_type;
40 bool test = true;
41 int_type c1, c2, c3;
43 // int_type sputbackc(char_type c)
44 // if in_cur not avail || ! traits::eq(c, gptr() [-1]), return pbfail
45 // otherwise decrements in_cur and returns *gptr()
47 // in
49 constraint_filebuf fb_01; // in
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.sputbackc('/');
55 VERIFY( c1 == c2 );
56 c3 = fb_01.sgetc();
57 VERIFY( c3 == c2 );
58 c3 = fb_01.sbumpc();
59 VERIFY( c3 == c2 );
60 fb_01.sbumpc();
61 c3 = fb_01.sbumpc();
62 VERIFY( c3 == ' ' );
63 c1 = fb_01.sgetc();
64 c2 = fb_01.sputbackc('a');
65 VERIFY( c2 == 'a' );
66 c3 = fb_01.sbumpc();
67 VERIFY( c3 == c2 );
68 c3 = fb_01.sgetc();
69 VERIFY( c1 == c3 );
70 fb_01.pubseekoff(5, ios_base::beg, ios_base::in);
71 c1 = fb_01.sgetc();
72 VERIFY( c1 == '0' );
73 fb_01.sbumpc();
74 c1 = fb_01.sbumpc();
75 VERIFY( c1 == '1' );
76 c2 = fb_01.sputbackc('b');
77 VERIFY( c2 == 'b' );
78 fb_01.sbumpc();
79 c3 = fb_01.sbumpc();
80 VERIFY( c3 == '1' );
81 c3 = fb_01.sbumpc();
82 VERIFY( c3 == '7' );
83 VERIFY( !fb_01.write_position() );
84 VERIFY( fb_01.read_position() );
88 main()
90 test01();
91 return 0;