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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 19// USA. 20 21// 27.8.1.4 Overridden virtual functions 22 23#include <fstream> 24#include <testsuite_hooks.h> 25#include <testsuite_io.h> 26 27// @require@ %-*.tst %-*.txt 28// @diff@ %-*.tst %*.txt 29 30const char name_02[] = "tmp_sgetn_1out.tst"; // empty file, need to create 31 32// Test overloaded virtual functions. 33void test05() 34{ 35 using namespace std; 36 using namespace __gnu_test; 37 typedef filebuf::int_type int_type; 38 typedef filebuf::traits_type traits_type; 39 40 bool test __attribute__((unused)) = true; 41 42 streamsize strmsz_1, strmsz_2; 43 char carray2[8192] = ""; 44 int_type c2, c4; 45 46 // streamsize sgetn(char_type *s, streamsize n) 47 // streamsize xsgetn(char_type *s, streamsize n) 48 // assign up to n chars to s from input sequence, indexing in_cur as 49 // approp and returning the number of chars assigned 50 51 // out 52 { 53 constraint_filebuf fb_02; 54 fb_02.open(name_02, ios_base::out | ios_base::trunc); 55 VERIFY( !fb_02.write_position() ); 56 VERIFY( !fb_02.read_position() ); 57 strmsz_2 = fb_02.in_avail(); 58 strmsz_2 = fb_02.sgetn(carray2, 10); 59 VERIFY( strmsz_2 == 0 ); 60 c2 = fb_02.sgetc(); 61 VERIFY( c2 == traits_type::eof() ); 62 strmsz_1 = fb_02.in_avail(); 63 strmsz_2 = fb_02.sgetn(carray2, strmsz_1 + 5); 64 VERIFY( strmsz_1 == -1 ); 65 VERIFY( strmsz_2 == 0 ); 66 c4 = fb_02.sgetc(); 67 VERIFY( c4 == traits_type::eof() ); 68 VERIFY( !fb_02.write_position() ); 69 VERIFY( !fb_02.read_position() ); 70 } 71} 72 73int main() 74{ 75 test05(); 76 return 0; 77} 78