1// Copyright (C) 2004 Free Software Foundation 2// 3// This file is part of the GNU ISO C++ Library. This library is free 4// software; you can redistribute it and/or modify it under the 5// terms of the GNU General Public License as published by the 6// Free Software Foundation; either version 2, or (at your option) 7// any later version. 8 9// This library is distributed in the hope that it will be useful, 10// but WITHOUT ANY WARRANTY; without even the implied warranty of 11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12// GNU General Public License for more details. 13 14// You should have received a copy of the GNU General Public License along 15// with this library; see the file COPYING. If not, write to the Free 16// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 17// USA. 18 19// 27.6.1.3 unformatted input functions 20// NB: ostream has a particular "seeks" category. Adopt this for istreams too. 21// @require@ %-*.tst %-*.txt 22// @diff@ %-*.tst %-*.txt 23 24#include <istream> 25#include <sstream> 26#include <fstream> 27#include <testsuite_hooks.h> 28 29void test01() 30{ 31 using namespace std; 32 typedef ios::off_type off_type; 33 typedef ios::pos_type pos_type; 34 35 bool test __attribute__((unused)) = true; 36 const char str_lit01[] = "wistream_seeks-1.tst"; 37 38 // in 39 wistringstream ist1; 40 pos_type p3 = ist1.tellg(); 41 42 wifstream ifs1; 43 pos_type p4 = ifs1.tellg(); 44 45 // N.B. We implement the resolution of DR 453 and 46 // istringstream::tellg() doesn't fail. 47 VERIFY( p3 == pos_type(off_type(0)) ); 48 VERIFY( p4 == pos_type(off_type(-1)) ); 49 50 // in 51 // test ctors leave things in the same positions... 52 wistringstream ist2(L"bob_marley:kaya"); 53 p3 = ist2.tellg(); 54 55 wifstream ifs2(str_lit01); 56 p4 = ifs2.tellg(); 57 58 VERIFY( p3 == p4 ); 59} 60 61int main() 62{ 63 test01(); 64 return 0; 65} 66