libstdc++-v3/testsuite/27_io/basic_stringbuf/sbumpc/char/1.cc

   1 // 981208 bkoz test functionality of basic_stringbuf for char_type == char
   2
   3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   4 // 2006, 2007, 2009
   5 // Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 #include <sstream>
  23 #include <testsuite_hooks.h>
  24
  25 std::string str_01("mykonos. . . or what?");
  26 std::string str_02("paris, or sainte-maxime?");
  27 std::string str_03;
  28 std::stringbuf strb_01(str_01);
  29 std::stringbuf strb_02(str_02, std::ios_base::in);
  30 std::stringbuf strb_03(str_03, std::ios_base::out);
  31
  32 // test overloaded virtual functions
  33 void test04()
  34 {
  35   bool test __attribute__((unused)) = true;
  36   std::streamoff                strmof_1(-1), strmof_2;
  37   typedef std::stringbuf::int_type int_type;
  38   typedef std::stringbuf::traits_type traits_type;
  39
  40   // GET
  41   strmof_1 = strb_01.in_avail();
  42   strmof_2 = strb_02.in_avail();
  43   strmof_1 = strb_03.in_avail();
  44
  45   // int_type sbumpc()
  46   // if read_cur not avail, return uflow(), else return *read_cur & increment
  47   int_type c1 = strb_01.sbumpc();
  48   int_type c2 = strb_02.sbumpc();
  49   VERIFY( c1 != c2 );
  50   VERIFY( c1 == traits_type::to_int_type(str_01[0]) );
  51   VERIFY( c2 == traits_type::to_int_type(str_02[0]) ); //should equal first letter at this point
  52   int_type c3 = strb_01.sbumpc();
  53   int_type c4 = strb_02.sbumpc();
  54   VERIFY( c1 != c2 );
  55   VERIFY( c1 != c3 );
  56   VERIFY( c2 != c4 );
  57   int_type c5 = strb_03.sbumpc();
  58   VERIFY( c5 == traits_type::eof() );
  59 }
  60
  61 int main()
  62 {
  63   test04();
  64   return 0;
  65 }
  66
  67
  68
  69 // more candy!!!