libstdc++-v3/testsuite/27_io/basic_filebuf/snextc/char/2-in.cc

   1 // 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001-2019 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
  31 const char name_01[] = "sgetc.txt"; // file with data in it
  32
  33 void test05()
  34 {
  35   using namespace std;
  36   using namespace __gnu_test;
  37   typedef filebuf::int_type     int_type;
  38   typedef filebuf::traits_type  traits_type;
  39
  40   int_type                      c1;
  41
  42   // int_type snextc()
  43   // calls sbumpc and if sbumpc != eof, return sgetc
  44
  45   // in
  46   {
  47     constraint_filebuf fb_01;
  48     fb_01.pubsetbuf(0, 0);
  49     fb_01.open(name_01, ios_base::in);
  50     VERIFY( fb_01.unbuffered() );
  51     c1 = fb_01.snextc();
  52     VERIFY( c1 == '/' ); // overflow
  53     c1 = fb_01.snextc();
  54     VERIFY( c1 == ' ' );
  55     VERIFY( fb_01.unbuffered() );
  56   }
  57
  58   // in
  59   {
  60     constraint_filebuf fb_01;
  61     fb_01.pubsetbuf(0, 0);
  62     fb_01.open(name_01, ios_base::in);
  63     VERIFY( fb_01.unbuffered() );
  64     int_type c4 = fb_01.sbumpc();
  65     VERIFY( c4 == '/' );
  66     c4 = fb_01.sbumpc();
  67     VERIFY( c4 == '/' );
  68     c4 = fb_01.sgetc();
  69     VERIFY( c4 == ' ' );
  70     c1 = fb_01.snextc();
  71     VERIFY( c1 == '9' );
  72     c4 = fb_01.sgetc();
  73     VERIFY( c4 == '9' );
  74     VERIFY( fb_01.unbuffered() );
  75   }
  76 }
  77
  78 int main()
  79 {
  80   test05();
  81   return 0;
  82 }