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

   1 // 1999-07-26 bkoz
   2
   3 // Copyright (C) 1999-2024 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 character extractors
  21
  22 #include <istream>
  23 #include <sstream>
  24 #include <testsuite_hooks.h>
  25
  26 void test02()
  27 {
  28   typedef std::ios::traits_type ctraits_type;
  29
  30   std::string str_01;
  31   const std::string str_02("or coltrane playing tunji with jimmy garrison");
  32   const std::string str_03("coltrane");
  33
  34   std::stringbuf isbuf_01(std::ios_base::in);
  35   std::stringbuf isbuf_02(str_02, std::ios_base::in);
  36   std::istream is_01(0);
  37   std::istream is_02(&isbuf_02);
  38   std::ios_base::iostate state1, state2, statefail;
  39   statefail = std::ios_base::failbit;
  40
  41   // template<_CharT, _Traits>
  42   //  basic_istream& operator>>(istream&, _CharT&)
  43   char c1 = 'c', c2 = 'c';
  44   state1 = is_01.rdstate();
  45   is_01 >> c1;
  46   state2 = is_01.rdstate();
  47   VERIFY( state1 != state2 );
  48   VERIFY( c1 == c2 );
  49   VERIFY( static_cast<bool>(state2 & statefail) );
  50
  51   state1 = is_02.rdstate();
  52   is_02 >> c1;
  53   state2 = is_02.rdstate();
  54   VERIFY( state1 == state2 );
  55   VERIFY( c1 == 'o' );
  56   is_02 >> c1;
  57   is_02 >> c1;
  58   VERIFY( c1 == 'c' );
  59   VERIFY( !static_cast<bool>(state2 & statefail) );
  60
  61   // template<_CharT, _Traits>
  62   //  basic_istream& operator>>(istream&, unsigned char&)
  63   unsigned char uc1 = 'c';
  64   state1 = is_02.rdstate();
  65   is_02 >> uc1;
  66   state2 = is_02.rdstate();
  67   VERIFY( state1 == state2 );
  68   VERIFY( uc1 == 'o' );
  69   is_02 >> uc1;
  70   is_02 >> uc1;
  71   VERIFY( uc1 == 't' );
  72
  73   // template<_CharT, _Traits>
  74   //  basic_istream& operator>>(istream&, signed char&)
  75   signed char sc1 = 'c';
  76   state1 = is_02.rdstate();
  77   is_02 >> sc1;
  78   state2 = is_02.rdstate();
  79   VERIFY( state1 == state2 );
  80   VERIFY( sc1 == 'r' );
  81   is_02 >> sc1;
  82   is_02 >> sc1;
  83   VERIFY( sc1 == 'n' );
  84 }
  85
  86 int main()
  87 {
  88   test02();
  89   return 0;
  90 }