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[official-gcc.git] / libstdc++-v3 / testsuite / 27_io / basic_filebuf / close / char / 1.cc
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1 // Copyright (C) 2001, 2002, 2003, 2009, 2010 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.
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.
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/>.
18 // 27.8.1.3 filebuf member functions
19 // @require@ %-*.tst %-*.txt
20 // @diff@ %-*.tst %-*.txt
22 // various tests for filebuf::open() and filebuf::close() including
23 // the non-portable functionality in the libstdc++-v3 IO library
25 // { dg-require-fileio "" }
27 #include <fstream>
28 #include <testsuite_hooks.h>
30 const char name_01[] = "filebuf_members-1.tst";
31 const char name_02[] = "filebuf_members-1.txt";
33 // Test member functions.
34 void test_01()
36 bool test __attribute__((unused)) = true;
37 const char* name_03 = "filebuf_members-3"; // empty file, need to create
39 std::filebuf fb_01; // in
40 std::filebuf fb_02; // out
41 std::filebuf fb_03; // in | out
43 // bool is_open()
44 VERIFY( !fb_01.is_open() );
45 VERIFY( !fb_02.is_open() );
46 VERIFY( !fb_03.is_open() );
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() );
52 // Try to open two different files without closing the first:
53 // Should keep the old file attached, and disregard attempt to overthrow.
54 fb_02.open(name_02, std::ios_base::in | std::ios_base::out
55 | std::ios_base::trunc);
56 VERIFY( fb_02.is_open() );
58 fb_03.open(name_03, std::ios_base::out | std::ios_base::trunc);
59 VERIFY( fb_03.is_open() );
61 // filebuf_type* close()
62 std::filebuf* f;
63 f = fb_01.close();
64 VERIFY( f );
65 VERIFY( !fb_01.is_open() );
67 f = fb_02.close();
68 VERIFY( f );
69 VERIFY( !fb_02.is_open() );
71 f = fb_03.close();
72 VERIFY( f );
73 VERIFY( !fb_03.is_open() );
75 f = fb_03.close();
76 VERIFY( !f );
77 VERIFY( !fb_03.is_open() );
80 int
81 main()
83 test_01();
84 return 0;