libstdc++-v3/testsuite/27_io/basic_stringbuf/seekpos/char/2.cc

   1 // 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001, 2002, 2003 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 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 // 27.7.1.3 Overridden virtual functions
  22
  23 #include <sstream>
  24 #include <testsuite_hooks.h>
  25
  26 void test02(std::stringbuf& in, bool pass)
  27 {
  28   bool test __attribute__((unused)) = true;
  29   using namespace std;
  30   typedef streambuf::pos_type pos_type;
  31   typedef streambuf::off_type off_type;
  32   pos_type bad = pos_type(off_type(-1));
  33   pos_type p = 0;
  34
  35   // seekpos
  36   p = in.pubseekpos(0, ios_base::in);
  37   if (pass)
  38     VERIFY( p != bad );
  39
  40   p = in.pubseekpos(0, ios_base::out);
  41   VERIFY( p == bad );
  42
  43   p = in.pubseekpos(0);
  44   if (pass)
  45     VERIFY( p != bad );
  46 }
  47
  48 int main()
  49 {
  50   using namespace std;
  51
  52   // movie star, submarine scientist!
  53   stringbuf in1("Hedy Lamarr", ios_base::in);
  54   stringbuf in2(ios_base::in);
  55   stringbuf in3("", ios_base::in);
  56   test02(in1, true);
  57   test02(in2, false);
  58   test02(in3, false);
  59   return 0;
  60 }