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_01
[] = "seekoff-2out.tst";
35 using namespace __gnu_test
;
37 typedef filebuf::int_type int_type
;
38 typedef filebuf::pos_type pos_type
;
39 typedef filebuf::off_type off_type
;
40 typedef filebuf::traits_type traits_type
;
43 streamsize strmsz_1
, strmsz_2
;
44 streamoff strmof_1
, strmof_2
;
50 pos_type
pt_1(off_type(-1));
51 pos_type
pt_2(off_type(0));
56 // pubseekoff(off_type off, ios_base::seekdir way, ios_base::openmode which)
57 // alters the stream position to off
61 constraint_filebuf fb
;
63 fb
.open(name_01
, ios_base::out
);
64 VERIFY( fb
.unbuffered() );
67 strmsz_1
= fb
.in_avail();
68 pt_1
= fb
.pubseekoff(2, ios_base::beg
);
69 strmsz_2
= fb
.in_avail();
72 c1
= fb
.snextc(); //current in pointer +1
73 VERIFY( c1
== traits_type::eof() );
74 fb
.pubseekoff(3, ios_base::beg
);
75 c2
= fb
.sputc('\n'); //current in pointer +1
76 fb
.pubseekoff(4, ios_base::beg
);
79 VERIFY( c3
== traits_type::eof() );
85 pt_2
= fb
.pubseekoff(2, ios_base::cur
);
87 VERIFY( (off_2
== (off_1
+ 2 + 1 + 1)) );
88 c1
= fb
.snextc(); //current in pointer +1
89 VERIFY( c1
== traits_type::eof() );
90 fb
.pubseekoff(0, ios_base::cur
);
91 c2
= fb
.sputc('x'); //test current out pointer
93 fb
.pubseekoff(0, ios_base::cur
);
100 pt_2
= fb
.pubseekoff(0, ios_base::end
);
102 VERIFY( off_1
> off_2
); //weak, but don't know exactly where it ends
104 strmsz_1
= fb
.sputn("because because because. . .", 28);
105 VERIFY( strmsz_1
== 28 );
106 fb
.pubseekoff(-1, ios_base::end
);
109 // Defect? retval of sungetc is not necessarily the character ungotten.
115 VERIFY( fb
.unbuffered() );