1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
// Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// 27.8.1.3 filebuf member functions
// @require@ %-*.tst %-*.txt
// @diff@ %-*.tst %-*.txt
// various tests for filebuf::open() and filebuf::close() including
// the non-portable functionality in the libstdc++-v3 IO library
#include <fstream>
#include <testsuite_hooks.h>
const char name_01[] = "filebuf_members-1.tst";
const char name_02[] = "filebuf_members-1.txt";
// Test member functions.
void test_01()
{
bool test __attribute__((unused)) = true;
const char* name_03 = "filebuf_members-3"; // empty file, need to create
std::filebuf fb_01; // in
std::filebuf fb_02; // out
std::filebuf fb_03; // in | out
// bool is_open()
VERIFY( !fb_01.is_open() );
VERIFY( !fb_02.is_open() );
VERIFY( !fb_03.is_open() );
// filebuf_type* open(const char* __s, ios_base::openmode __mode)
fb_01.open(name_01, std::ios_base::in | std::ios_base::ate);
VERIFY( fb_01.is_open() );
// Try to open two different files without closing the first:
// Should keep the old file attached, and disregard attempt to overthrow.
fb_02.open(name_02, std::ios_base::in | std::ios_base::out
| std::ios_base::trunc);
VERIFY( fb_02.is_open() );
fb_03.open(name_03, std::ios_base::out | std::ios_base::trunc);
VERIFY( fb_03.is_open() );
// filebuf_type* close()
std::filebuf* f;
f = fb_01.close();
VERIFY( f != NULL );
VERIFY( !fb_01.is_open() );
f = fb_02.close();
VERIFY( f != NULL );
VERIFY( !fb_02.is_open() );
f = fb_03.close();
VERIFY( f != NULL );
VERIFY( !fb_03.is_open() );
f = fb_03.close();
VERIFY( f == NULL );
VERIFY( !fb_03.is_open() );
}
int
main()
{
test_01();
return 0;
}
|
