libstdc++-v3/testsuite/27_io/basic_istream/read/wchar_t/2.cc

   1 // Copyright (C) 2004-2023 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.
   8
   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.
  13
  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/>.
  17
  18 // 27.6.1.3 unformatted input functions
  19
  20 #include <istream>
  21 #include <sstream>
  22 #include <testsuite_hooks.h>
  23
  24 // Jim Parsons <parsons at clearway dot com>
  25 // http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00177.html
  26 void
  27 test04()
  28 {
  29   const std::wstring str_00(L"Red_Garland_Qunitet-Soul_Junction");
  30   wchar_t c_array[str_00.size() + 4];
  31
  32   std::wstringbuf isbuf_00(str_00, std::ios_base::in);
  33   std::wistream is_00(&isbuf_00);
  34   std::ios_base::iostate state1, statefail, stateeof;
  35   statefail = std::ios_base::failbit;
  36   stateeof = std::ios_base::eofbit;
  37
  38   state1 = stateeof | statefail;
  39   VERIFY( is_00.gcount() == 0 );
  40   is_00.read(c_array, str_00.size() + 1);
  41   VERIFY( is_00.gcount() == static_cast<std::streamsize>(str_00.size()) );
  42   VERIFY( is_00.rdstate() == state1 );
  43
  44   is_00.read(c_array, str_00.size());
  45   VERIFY( is_00.rdstate() == state1 );
  46 }
  47
  48 int
  49 main()
  50 {
  51   test04();
  52   return 0;
  53 }