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) 1997-2018 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 #include <sstream>
  21 #include <testsuite_hooks.h>
  22
  23 std::string str_01("mykonos. . . or what?");
  24 std::string str_02("paris, or sainte-maxime?");
  25 std::string str_03;
  26 std::stringbuf strb_01(str_01);
  27 std::stringbuf strb_02(str_02, std::ios_base::in);
  28 std::stringbuf strb_03(str_03, std::ios_base::out);
  29
  30 // test overloaded virtual functions
  31 void test04()
  32 {
  33   typedef std::stringbuf::int_type int_type;
  34   typedef std::stringbuf::traits_type traits_type;
  35
  36   // GET
  37   strb_01.in_avail();
  38   strb_02.in_avail();
  39   strb_03.in_avail();
  40
  41   // int_type sbumpc()
  42   // if read_cur not avail, return uflow(), else return *read_cur & increment
  43   int_type c1 = strb_01.sbumpc();
  44   int_type c2 = strb_02.sbumpc();
  45   VERIFY( c1 != c2 );
  46   VERIFY( c1 == traits_type::to_int_type(str_01[0]) );
  47   VERIFY( c2 == traits_type::to_int_type(str_02[0]) ); //should equal first letter at this point
  48   int_type c3 = strb_01.sbumpc();
  49   int_type c4 = strb_02.sbumpc();
  50   VERIFY( c1 != c2 );
  51   VERIFY( c1 != c3 );
  52   VERIFY( c2 != c4 );
  53   int_type c5 = strb_03.sbumpc();
  54   VERIFY( c5 == traits_type::eof() );
  55 }
  56
  57 int main()
  58 {
  59   test04();
  60   return 0;
  61 }
  62
  63
  64
  65 // more candy!!!