1// 2004-06-20 Paolo Carlini <pcarlini@suse.de> 2 3// Copyright (C) 2004-2015 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// 27.6.1.3 unformatted input functions 21// @require@ %-*.tst %-*.txt 22// @diff@ %-*.tst %-*.txt 23 24// { dg-require-fileio "" } 25 26#include <istream> 27#include <fstream> 28#include <limits> 29#include <testsuite_hooks.h> 30 31// istream& ignore(streamsize n) 32void 33test01() 34{ 35 using namespace std; 36 bool test __attribute__((unused)) = true; 37 38 const char filename[] ="istream_unformatted-1.txt"; 39 ios_base::iostate state1, state2; 40 41 ifstream ifstrm; 42 ifstrm.open(filename); 43 44 state1 = ifstrm.rdstate(); 45 VERIFY( state1 == ios_base::goodbit ); 46 VERIFY( ifstrm.peek() == '1' ); 47 state2 = ifstrm.rdstate(); 48 VERIFY( state1 == state2 ); 49 50 state1 = ifstrm.rdstate(); 51 ifstrm.ignore(1); 52 VERIFY( ifstrm.gcount() == 1 ); 53 state2 = ifstrm.rdstate(); 54 VERIFY( state1 == state2 ); 55 VERIFY( ifstrm.peek() == '2' ); 56 57 state1 = ifstrm.rdstate(); 58 ifstrm.ignore(10); 59 VERIFY( ifstrm.gcount() == 10 ); 60 state2 = ifstrm.rdstate(); 61 VERIFY( state1 == state2 ); 62 VERIFY( ifstrm.peek() == '1' ); 63 64 state1 = ifstrm.rdstate(); 65 ifstrm.ignore(100); 66 VERIFY( ifstrm.gcount() == 100 ); 67 state2 = ifstrm.rdstate(); 68 VERIFY( state1 == state2 ); 69 VERIFY( ifstrm.peek() == '2' ); 70 71 state1 = ifstrm.rdstate(); 72 ifstrm.ignore(1000); 73 VERIFY( ifstrm.gcount() == 1000 ); 74 state2 = ifstrm.rdstate(); 75 VERIFY( state1 == state2 ); 76 VERIFY( ifstrm.peek() == '1' ); 77 78 state1 = ifstrm.rdstate(); 79 ifstrm.ignore(10000); 80 VERIFY( ifstrm.gcount() == 10000 ); 81 state2 = ifstrm.rdstate(); 82 VERIFY( state1 == state2 ); 83 VERIFY( ifstrm.peek() == '2' ); 84 85 state1 = ifstrm.rdstate(); 86 ifstrm.ignore(numeric_limits<streamsize>::max()); 87 VERIFY( ifstrm.gcount() == 5389 ); 88 state2 = ifstrm.rdstate(); 89 VERIFY( state1 != state2 ); 90 VERIFY( state2 == ios_base::eofbit ); 91} 92 93int 94main() 95{ 96 test01(); 97 return 0; 98} 99