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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 | ||
30 | const char name_01[] = "tmp_sputbackc_1out.tst"; // empty file, need to create | |
31 | ||
32 | // Test overloaded virtual functions. | |
33 | void test01() | |
34 | { | |
35 | using namespace std; | |
aecf642c | 36 | using namespace __gnu_test; |
f10eea7b PC |
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 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() | |
46 | ||
47 | // out | |
48 | { | |
49 | constraint_filebuf fb_01; // out | |
50 | fb_01.open(name_01, ios::out | ios::trunc); | |
71b46021 | 51 | VERIFY( !fb_01.write_position() ); |
f10eea7b PC |
52 | VERIFY( !fb_01.read_position() ); |
53 | c1 = fb_01.sgetc(); | |
54 | VERIFY( c1 == traits_type::eof() ); | |
55 | c2 = fb_01.sputbackc('a'); | |
56 | VERIFY( c2 == traits_type::eof() ); | |
57 | fb_01.sbumpc(); | |
58 | c1 = fb_01.sbumpc(); | |
59 | c2 = fb_01.sputbackc('a'); | |
60 | VERIFY( c1 == c2 ); | |
71b46021 | 61 | VERIFY( !fb_01.write_position() ); |
f10eea7b PC |
62 | VERIFY( !fb_01.read_position() ); |
63 | } | |
64 | } | |
65 | ||
66 | main() | |
67 | { | |
68 | test01(); | |
69 | return 0; | |
70 | } |