1 // 2001-05-21 Benjamin Kosnik <bkoz@redhat.com>
3 // Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
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)
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,
21 // 27.8.1.4 Overridden virtual functions
24 #include <testsuite_hooks.h>
25 #include <testsuite_io.h>
27 // @require@ %-*.tst %-*.txt
28 // @diff@ %-*.tst %*.txt
30 const char name_02
[] = "tmp_sgetn_2out.tst"; // empty file, need to create
32 // Test overloaded virtual functions.
36 using namespace __gnu_test
;
37 typedef filebuf::int_type int_type
;
38 typedef filebuf::traits_type traits_type
;
42 streamsize strmsz_1
, strmsz_2
, strmsz_3
;
43 int i
= 0, j
= 0, k
= 0;
44 char carray1
[13] = "";
45 char carray2
[8192] = "";
46 int_type c1
, c2
, c3
, c4
;
48 // streamsize sgetn(char_type *s, streamsize n)
49 // streamsize xsgetn(char_type *s, streamsize n)
50 // assign up to n chars to s from input sequence, indexing in_cur as
51 // approp and returning the number of chars assigned
55 constraint_filebuf fb_02
;
56 fb_02
.pubsetbuf(0, 0);
57 fb_02
.open(name_02
, ios_base::out
| ios_base::trunc
);
58 VERIFY( fb_02
.unbuffered() );
59 VERIFY( !fb_02
.read_position() );
60 strmsz_2
= fb_02
.in_avail();
61 strmsz_2
= fb_02
.sgetn(carray2
, 10);
62 VERIFY( strmsz_2
== 0 );
64 VERIFY( c2
== traits_type::eof() );
65 strmsz_1
= fb_02
.in_avail();
66 strmsz_2
= fb_02
.sgetn(carray2
, strmsz_1
+ 5);
67 VERIFY( strmsz_1
== -1 );
68 VERIFY( strmsz_2
== 0 );
70 VERIFY( fb_02
.unbuffered() );
71 VERIFY( !fb_02
.read_position() );