1// 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
2
3// Copyright (C) 2001-2015 Free Software Foundation, Inc.
4//
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 3, or (at your option)
9// any later version.
10
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.
15
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING3.  If not see
18// <http://www.gnu.org/licenses/>.
19
20// 27.8.1.4 Overridden virtual functions
21
22// { dg-require-fileio "" }
23
24#include <fstream>
25#include <testsuite_hooks.h>
26#include <testsuite_io.h>
27
28// @require@ %-*.tst %-*.txt
29// @diff@ %-*.tst %*.txt
30
31const char name_01[] = "sgetc.txt"; // file with data in it
32const char name_03[] = "tmp_sbumpc_2io.tst"; // empty file, need to create
33
34void test05()
35{
36  using namespace std;
37  using namespace __gnu_test;
38  typedef filebuf::int_type 	int_type;
39  typedef filebuf::traits_type 	traits_type;
40
41  bool test __attribute__((unused)) = true;
42
43  // int_type sbumpc()
44  // if read_cur not avail returns uflow(), else return *read_cur & increment
45
46  // in | out 1
47  {
48    constraint_filebuf fb_03;
49    fb_03.pubsetbuf(0, 0);
50    fb_03.open(name_03, ios_base::out | ios_base::in | ios_base::trunc);
51    VERIFY( fb_03.unbuffered() );
52    int_type c5 = fb_03.sbumpc();
53    VERIFY( c5 == traits_type::eof() );
54    VERIFY( fb_03.unbuffered() );
55  }
56
57  // in | out 2
58  {
59    constraint_filebuf fb_01;
60    fb_01.pubsetbuf(0, 0);
61    fb_01.open(name_01, ios_base::in | ios_base::out);
62    VERIFY( fb_01.unbuffered() );
63
64    int_type c1 = fb_01.sbumpc();
65    VERIFY( c1 == '/' );
66    int_type c3 = fb_01.sbumpc();
67    VERIFY( c3 == '/' );
68
69    c1 = fb_01.sgetc();
70    int_type c2 = fb_01.sbumpc();
71    c3 = fb_01.sgetc();
72    VERIFY( c1 == ' ' );
73    VERIFY( c3 == '9' );
74    VERIFY( c1 == c2 );
75    VERIFY( c2 != c3 );
76
77    c1 = fb_01.sbumpc();
78    c2 = fb_01.sbumpc();
79    c3 = fb_01.sgetc();
80    VERIFY( c1 == '9' );
81    VERIFY( c2 == '9' );
82    VERIFY( c3 == '0' );
83
84    VERIFY( fb_01.unbuffered() );
85  }
86}
87
88int main()
89{
90  test05();
91  return 0;
92}
93