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

   1 // 1999-07-26 bkoz
   2
   3 // Copyright (C) 1999, 2003, 2005 Free Software Foundation
   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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // 27.6.1.2.3 character extractors
  22
  23 #include <istream>
  24 #include <sstream>
  25 #include <testsuite_hooks.h>
  26
  27 void test01()
  28 {
  29   bool test __attribute__((unused)) = true;
  30   std::string str_01;
  31   const std::string str_02("coltrane playing 'softly as a morning sunrise'");
  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(NULL);
  37   std::istream is_02(&isbuf_02);
  38
  39   std::ios_base::iostate state1, state2, statefail;
  40   statefail = std::ios_base::failbit;
  41
  42   // template<_CharT, _Traits>
  43   //  basic_istream& operator>>(istream&, _CharT*)
  44   const int n = 20;
  45   char array1[n];
  46   array1[0] = '\0';
  47   typedef std::ios::traits_type ctraits_type;
  48   ctraits_type::int_type i1, i2;
  49
  50   state1 = is_01.rdstate();
  51   i1 = ctraits_type::length(array1);
  52   is_01 >> array1;   // should snake 0 characters, not alter stream state
  53   i2 = ctraits_type::length(array1);
  54   state2 = is_01.rdstate();
  55   VERIFY( i1 == i2 );
  56   VERIFY( state1 != state2 );
  57   VERIFY( static_cast<bool>(state2 & statefail) );
  58
  59   state1 = is_02.rdstate();
  60   is_02 >> array1;   // should snake "coltrane"
  61   state2 = is_02.rdstate();
  62   VERIFY( state1 == state2 );
  63   VERIFY( !static_cast<bool>(state2 & statefail) );
  64   VERIFY( array1[str_03.size() - 1] == 'e' );
  65   array1[str_03.size()] = '\0';
  66   VERIFY( !str_03.compare(0, str_03.size(), array1) );
  67   std::istream::int_type int1 = is_02.peek(); // should be ' '
  68   VERIFY( int1 == ' ' );
  69
  70   state1 = is_02.rdstate();
  71   is_02 >> array1;   // should snake "playing" as sentry "eats" ws
  72   state2 = is_02.rdstate();
  73   int1 = is_02.peek(); // should be ' '
  74   VERIFY( int1 == ' ' );
  75   VERIFY( state1 == state2 );
  76   VERIFY( !static_cast<bool>(state2 & statefail) );
  77
  78   // template<_CharT, _Traits>
  79   //  basic_istream& operator>>(istream&, unsigned char*)
  80   unsigned char array2[n];
  81   state1 = is_02.rdstate();
  82   is_02 >> array2;   // should snake 'softly
  83   state2 = is_02.rdstate();
  84   VERIFY( state1 == state2 );
  85   VERIFY( !static_cast<bool>(state2 & statefail) );
  86   VERIFY( array2[0] == '\'' );
  87   VERIFY( array2[1] == 's' );
  88   VERIFY( array2[6] == 'y' );
  89   int1 = is_02.peek(); // should be ' '
  90   VERIFY( int1 == ' ' );
  91
  92   // template<_CharT, _Traits>
  93   //  basic_istream& operator>>(istream&, signed char*)
  94   signed char array3[n];
  95   state1 = is_02.rdstate();
  96   is_02 >> array3;   // should snake "as"
  97   state2 = is_02.rdstate();
  98   VERIFY( state1 == state2 );
  99   VERIFY( !static_cast<bool>(state2 & statefail) );
 100   VERIFY( array3[0] == 'a' );
 101   VERIFY( array3[1] == 's' );
 102   int1 = is_02.peek(); // should be ' '
 103   VERIFY( int1 == ' ' );
 104 }
 105
 106 int main()
 107 {
 108   test01();
 109   return 0;
 110 }