libstdc++-v3/testsuite/27_io/basic_filebuf/close/char/5.cc

   1 // 2003-05-20  Paolo Carlini  <pcarlini@unitus.it>
   2
   3 // Copyright (C) 2003 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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // 27.8.1.3 filebuf member functions
  22 // @require@ %-*.tst %-*.txt
  23 // @diff@ %-*.tst %-*.txt
  24
  25 // Test that upon filebuf::close() 27.8.1.1,3 is enforced.
  26
  27 #include <fstream>
  28 #include <testsuite_hooks.h>
  29
  30 const char name_01[] = "filebuf_virtuals-1.txt"; // file with data in it
  31 const char name_02[] = "filebuf_virtuals-2.txt"; // empty file, need to create
  32
  33 bool overflow_called;
  34 bool underflow_called;
  35 bool uflow_called;
  36
  37 class Close_filebuf : public std::filebuf
  38 {
  39 public:
  40   int_type overflow(int_type c)
  41   {
  42     overflow_called = true;
  43     return std::filebuf::overflow(c);
  44   }
  45
  46   int_type underflow()
  47   {
  48     underflow_called = true;
  49     return std::filebuf::underflow();
  50   }
  51
  52   int_type uflow()
  53   {
  54     uflow_called = true;
  55     return std::filebuf::uflow();
  56   }
  57 };
  58
  59 void test_05()
  60 {
  61   bool test __attribute__((unused)) = true;
  62
  63   Close_filebuf fb_01, fb_02;
  64   char buffer[] = "xxxxxxxxxx";
  65
  66   // 'in'
  67   fb_01.open(name_01, std::ios_base::in);
  68   fb_01.sgetc();
  69
  70   fb_01.close();
  71
  72   underflow_called = false;
  73   fb_01.sgetc();
  74   VERIFY( underflow_called == true );
  75
  76   uflow_called = false;
  77   fb_01.sbumpc();
  78   VERIFY( uflow_called == true );
  79
  80   uflow_called = false;
  81   fb_01.snextc();
  82   VERIFY( uflow_called == true );
  83
  84   uflow_called = false;
  85   fb_01.sgetn(buffer, sizeof(buffer));
  86   VERIFY( uflow_called == true );
  87
  88   // 'out'
  89   fb_02.open(name_02, std::ios_base::out);
  90
  91   fb_02.close();
  92
  93   overflow_called = false;
  94   fb_02.sputc('T');
  95   VERIFY( overflow_called == true );
  96
  97   overflow_called = false;
  98   fb_02.sputn(buffer, sizeof(buffer));
  99   VERIFY( overflow_called == true );
 100 }
 101
 102 int
 103 main()
 104 {
 105   test_05();
 106   return 0;
 107 }