libstdc++-v3/testsuite/27_io/basic_istream/extractors_other/char/2.cc

   1 // 1999-07-28 bkoz
   2
   3 // Copyright (C) 1999-2020 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 // 27.6.1.2.3 basic_istream::operator>>
  21 // @require@ %-*.tst %-*.txt
  22 // @diff@ %-*.tst %-*.txt
  23
  24 // { dg-require-fileio "" }
  25
  26 #include <istream>
  27 #include <fstream>
  28 #include <testsuite_hooks.h>
  29
  30 // filebufs.
  31 void test02()
  32 {
  33   const char name_01[] = "istream_extractor_other-1.txt"; //read
  34   const char name_02[] = "istream_extractor_other-2.txt"; //write
  35
  36   std::filebuf fbin, fbout;
  37   fbin.open(name_01, std::ios_base::in);
  38   fbout.open(name_02, std::ios_base::out | std::ios_base::trunc);
  39   VERIFY( fbin.is_open() );
  40   VERIFY( fbout.is_open() );
  41
  42   {
  43     std::istream is(&fbin);
  44     is.unsetf(std::ios_base::skipws);
  45     is >> &fbout;
  46   }
  47
  48   fbout.close();
  49   fbin.close();
  50   VERIFY( !fbin.is_open() );
  51   VERIFY( !fbout.is_open() );
  52 }
  53
  54 int main()
  55 {
  56   test02();
  57   return 0;
  58 }