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

   1 // 981208 bkoz test functionality of basic_stringbuf for char_type == char
   2
   3 // Copyright (C) 1997-2020 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   int_type c1 = strb_01.sbumpc();
  37   int_type c2 = strb_02.sbumpc();
  38   int_type c3 = strb_01.sbumpc();
  39
  40   // PUT
  41   // int_type sputc(char_type c)
  42   // if out_cur not avail, return overflow. Else, stores c at out_cur,
  43   // increments out_cur, and returns c as int_type
  44   strb_03.str(str_01); //reset
  45   std::string::size_type sz1 = strb_03.str().length();
  46   c1 = strb_03.sputc('a');
  47   std::string::size_type sz2 = strb_03.str().length();
  48   VERIFY( sz1 == sz2 ); //cuz inserting at out_cur, which is at beg to start
  49   c2 = strb_03.sputc('b');
  50   VERIFY( c1 != c2 );
  51   VERIFY( strb_03.str() != str_01 );
  52   c3 = strb_02.sputc('a'); // should be EOF because this is read-only
  53   VERIFY( c3 == traits_type::eof() );
  54 }
  55
  56 int main()
  57 {
  58   test04();
  59   return 0;
  60 }
  61
  62
  63
  64 // more candy!!!