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

   1 // 1999-07-22 bkoz
   2
   3 // Copyright (C) 1994-2020 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 // 27.6.1.4 standard basic_istream manipulators
  21
  22 #include <istream>
  23 #include <sstream>
  24 #include <stdexcept>
  25 #include <testsuite_hooks.h>
  26
  27 void test01(void)
  28 {
  29   const char str_lit01[] = "  venice ";
  30   const std::string str01(" santa barbara ");
  31   std::string str02(str_lit01);
  32   std::string str04;
  33   std::string str05;
  34
  35   // template<_CharT, _Traits>
  36   //  basic_istream<_CharT, _Traits>& ws(basic_istream<_Char, _Traits>& is)
  37   std::istringstream iss01(str01);
  38   std::istringstream iss02(str01);
  39
  40   iss01 >> str04;
  41   VERIFY( str04.size() != str01.size() );
  42   VERIFY( str04 == "santa" );
  43
  44   iss02 >> std::ws;
  45   iss02 >> str05;
  46   VERIFY( str05.size() != str01.size() );
  47   VERIFY( str05 == "santa" );
  48   VERIFY( str05 == str04 );
  49
  50   iss01 >> str04;
  51   VERIFY( str04.size() != str01.size() );
  52   VERIFY( str04 == "barbara" );
  53
  54   iss02 >> std::ws;
  55   iss02 >> str05;
  56   VERIFY( str05.size() != str01.size() );
  57   VERIFY( str05 == "barbara" );
  58   VERIFY( str05 == str04 );
  59
  60   VERIFY( !iss01.fail() );
  61   VERIFY( !iss02.fail() );
  62   VERIFY( !iss01.eof() );
  63   VERIFY( !iss02.eof() );
  64
  65   iss01 >> std::ws;
  66   VERIFY( !iss01.fail() );
  67   VERIFY( iss01.eof() );
  68 }
  69
  70 int main()
  71 {
  72   test01();
  73   return 0;
  74 }