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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/27_io/basic_filebuf/sgetn/char/1-out.cc
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_1out.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 char carray1
[13] = "";
44 char carray2
[8192] = "";
45 int_type c1
, c2
, c3
, c4
;
47 // streamsize sgetn(char_type *s, streamsize n)
48 // streamsize xsgetn(char_type *s, streamsize n)
49 // assign up to n chars to s from input sequence, indexing in_cur as
50 // approp and returning the number of chars assigned
54 constraint_filebuf fb_02
;
55 fb_02
.open(name_02
, ios_base::out
| ios_base::trunc
);
56 VERIFY( !fb_02
.write_position() );
57 VERIFY( !fb_02
.read_position() );
58 strmsz_2
= fb_02
.in_avail();
59 strmsz_2
= fb_02
.sgetn(carray2
, 10);
60 VERIFY( strmsz_2
== 0 );
62 VERIFY( c2
== traits_type::eof() );
63 strmsz_1
= fb_02
.in_avail();
64 strmsz_2
= fb_02
.sgetn(carray2
, strmsz_1
+ 5);
65 VERIFY( strmsz_1
== -1 );
66 VERIFY( strmsz_2
== 0 );
68 VERIFY( c4
== traits_type::eof() );
69 VERIFY( !fb_02
.write_position() );
70 VERIFY( !fb_02
.read_position() );