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

   1 // 1999-08-11 bkoz
   2
   3 // Copyright (C) 1999, 2000, 2001, 2002, 2003, 2009 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 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 // 27.6.1.3 unformatted input functions
  21
  22 #include <istream>
  23 #include <sstream>
  24 #include <testsuite_hooks.h>
  25
  26 void
  27 test01()
  28 {
  29   typedef std::ios::traits_type traits_type;
  30
  31   bool test __attribute__((unused)) = true;
  32   const std::string str_01;
  33   const std::string str_02("soul eyes: john coltrane quartet");
  34   std::string strtmp;
  35
  36   std::stringbuf isbuf_03(str_02, std::ios_base::in);
  37   std::stringbuf isbuf_04(str_02, std::ios_base::in);
  38
  39   std::istream is_00(NULL);
  40   std::istream is_03(&isbuf_03);
  41   std::istream is_04(&isbuf_04);
  42   std::ios_base::iostate state1, state2, statefail, stateeof;
  43   statefail = std::ios_base::failbit;
  44   stateeof = std::ios_base::eofbit;
  45
  46   // istream& read(char_type* s, streamsize n)
  47   char carray[60] = "";
  48   is_04.read(carray, 9);
  49   VERIFY( is_04.peek() == ':' );
  50
  51   // istream& ignore(streamsize n = 1, int_type delim = traits::eof())
  52   state1 = is_04.rdstate();
  53   is_04.ignore();
  54   VERIFY( is_04.gcount() == 1 );
  55   state2 = is_04.rdstate();
  56   VERIFY( state1 == state2 );
  57   VERIFY( is_04.peek() == ' ' );
  58
  59   state1 = is_04.rdstate();
  60   is_04.ignore(0);
  61   VERIFY( is_04.gcount() == 0 );
  62   state2 = is_04.rdstate();
  63   VERIFY( state1 == state2 );
  64   VERIFY( is_04.peek() == ' ' );
  65
  66   state1 = is_04.rdstate();
  67   is_04.ignore(5, traits_type::to_int_type(' '));
  68   VERIFY( is_04.gcount() == 1 );
  69   state2 = is_04.rdstate();
  70   VERIFY( state1 == state2 );
  71   VERIFY( is_04.peek() == 'j' );
  72 }
  73
  74 int
  75 main()
  76 {
  77   test01();
  78   return 0;
  79 }