1// Copyright (C) 2001-2015 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 3, 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 COPYING3.  If not see
16// <http://www.gnu.org/licenses/>.
17
18// 27.8.1.3 filebuf member functions
19// @require@ %-*.tst %-*.txt
20// @diff@ %-*.tst %-*.txt
21
22// various tests for filebuf::open() and filebuf::close() including
23// the non-portable functionality in the libstdc++-v3 IO library
24
25// { dg-require-fileio "" }
26
27#include <fstream>
28#include <testsuite_hooks.h>
29
30const char name_01[] = "filebuf_members-1.tst";
31const char name_02[] = "filebuf_members-1.txt";
32
33// Test member functions.
34void test_01()
35{
36  bool test __attribute__((unused)) = true;
37  const char* name_03 = "filebuf_members-3"; // empty file, need to create
38
39  std::filebuf fb_01; // in
40  std::filebuf fb_02; // out
41  std::filebuf fb_03; // in | out
42
43  // bool is_open()
44  VERIFY( !fb_01.is_open() );
45  VERIFY( !fb_02.is_open() );
46  VERIFY( !fb_03.is_open() );
47
48  // filebuf_type* open(const char* __s, ios_base::openmode __mode)
49  fb_01.open(name_01, std::ios_base::in | std::ios_base::ate);
50  VERIFY( fb_01.is_open() );
51
52  // Try to open two different files without closing the first:
53  // Should keep the old file attached, and disregard attempt to overthrow.
54  std::filebuf* f = fb_02.open(name_02, std::ios_base::in | std::ios_base::out
55			       | std::ios_base::trunc);
56  VERIFY( f );
57  VERIFY( fb_02.is_open() );
58
59  f = fb_02.open(name_03, std::ios_base::in | std::ios_base::out);
60  VERIFY( !f );
61  VERIFY( fb_02.is_open() );
62
63  fb_03.open(name_03, std::ios_base::out | std::ios_base::trunc);
64  VERIFY( fb_03.is_open() );
65}
66
67int
68main()
69{
70  test_01();
71  return 0;
72}
73
74
75