libstdc++-v3/testsuite/27_io/basic_istream/ws/wchar_t/1.cc

   1 // Copyright (C) 2004-2021 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 // 27.6.1.4 standard basic_istream manipulators
  19
  20 #include <istream>
  21 #include <sstream>
  22 #include <stdexcept>
  23 #include <testsuite_hooks.h>
  24
  25 void test01(void)
  26 {
  27   const wchar_t str_lit01[] = L"  venice ";
  28   const std::wstring str01(L" santa barbara ");
  29   std::wstring str02(str_lit01);
  30   std::wstring str04;
  31   std::wstring str05;
  32
  33   // template<_CharT, _Traits>
  34   //  basic_istream<_CharT, _Traits>& ws(basic_istream<_Char, _Traits>& is)
  35   std::wistringstream iss01(str01);
  36   std::wistringstream iss02(str01);
  37
  38   iss01 >> str04;
  39   VERIFY( str04.size() != str01.size() );
  40   VERIFY( str04 == L"santa" );
  41
  42   iss02 >> std::ws;
  43   iss02 >> str05;
  44   VERIFY( str05.size() != str01.size() );
  45   VERIFY( str05 == L"santa" );
  46   VERIFY( str05 == str04 );
  47
  48   iss01 >> str04;
  49   VERIFY( str04.size() != str01.size() );
  50   VERIFY( str04 == L"barbara" );
  51
  52   iss02 >> std::ws;
  53   iss02 >> str05;
  54   VERIFY( str05.size() != str01.size() );
  55   VERIFY( str05 == L"barbara" );
  56   VERIFY( str05 == str04 );
  57
  58   VERIFY( !iss01.fail() );
  59   VERIFY( !iss02.fail() );
  60   VERIFY( !iss01.eof() );
  61   VERIFY( !iss02.eof() );
  62
  63   iss01 >> std::ws;
  64   VERIFY( !iss01.fail() );
  65   VERIFY( iss01.eof() );
  66 }
  67
  68 int main()
  69 {
  70   test01();
  71   return 0;
  72 }