1// Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
2//
3// This file is part of the GNU ISO C++ Library.  This library is free
4// software; you can redistribute it and/or modify it under the
5// terms of the GNU General Public License as published by the
6// Free Software Foundation; either version 2, or (at your option)
7// any later version.
8
9// This library is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13
14// You should have received a copy of the GNU General Public License along
15// with this library; see the file COPYING.  If not, write to the Free
16// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
17// USA.
18
19// 27.8.1.3 filebuf member functions
20// @require@ %-*.tst %-*.txt
21// @diff@ %-*.tst %-*.txt
22
23// various tests for filebuf::open() and filebuf::close() including
24// the non-portable functionality in the libstdc++-v3 IO library
25
26#include <fstream>
27#include <testsuite_hooks.h>
28
29const char name_01[] = "filebuf_members-1.tst";
30const char name_02[] = "filebuf_members-1.txt";
31
32// Test member functions.
33void test_01()
34{
35  bool test __attribute__((unused)) = true;
36  const char* name_03 = "filebuf_members-3"; // empty file, need to create
37
38  std::filebuf fb_01; // in
39  std::filebuf fb_02; // out
40  std::filebuf fb_03; // in | out
41
42  // bool is_open()
43  VERIFY( !fb_01.is_open() );
44  VERIFY( !fb_02.is_open() );
45  VERIFY( !fb_03.is_open() );
46
47  // filebuf_type* open(const char* __s, ios_base::openmode __mode)
48  fb_01.open(name_01, std::ios_base::in | std::ios_base::ate);
49  VERIFY( fb_01.is_open() );
50
51  // Try to open two different files without closing the first:
52  // Should keep the old file attached, and disregard attempt to overthrow.
53  fb_02.open(name_02, std::ios_base::in | std::ios_base::out
54	     | std::ios_base::trunc);
55  VERIFY( fb_02.is_open() );
56
57  fb_03.open(name_03, std::ios_base::out | std::ios_base::trunc);
58  VERIFY( fb_03.is_open() );
59
60  // filebuf_type* close()
61  std::filebuf* f;
62  f = fb_01.close();
63  VERIFY( f != NULL );
64  VERIFY( !fb_01.is_open() );
65
66  f = fb_02.close();
67  VERIFY( f != NULL );
68  VERIFY( !fb_02.is_open() );
69
70  f = fb_03.close();
71  VERIFY( f != NULL );
72  VERIFY( !fb_03.is_open() );
73
74  f = fb_03.close();
75  VERIFY( f == NULL );
76  VERIFY( !fb_03.is_open() );
77}
78
79int
80main()
81{
82  test_01();
83  return 0;
84}
85
86
87