libstdc++-v3/testsuite/25_algorithms/copy/streambuf_iterators/char/4.cc

   1 // 2006-03-20  Paolo Carlini  <pcarlini@suse.de>
   2
   3 // Copyright (C) 2006-2024 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 <iterator>
  21 #include <fstream>
  22 #include <algorithm>
  23 #include <cstring>
  24 #include <vector>
  25 #include <deque>
  26
  27 #include <testsuite_hooks.h>
  28
  29 // { dg-require-fileio "" }
  30
  31 // In the occasion of libstdc++/25482
  32 void test01()
  33 {
  34   using namespace std;
  35
  36   typedef istreambuf_iterator<char> in_iterator_type;
  37
  38   ifstream fbuf_ref("istream_unformatted-1.txt"),
  39            fbuf("istream_unformatted-1.txt");
  40
  41   char buffer_ref[16500],
  42        buffer[16500];
  43
  44   fbuf_ref.read(buffer_ref, 16500);
  45
  46   in_iterator_type beg(fbuf);
  47   in_iterator_type end;
  48   copy(beg, end, buffer);
  49
  50   VERIFY( fbuf_ref.good() );
  51   VERIFY( fbuf.good() );
  52
  53   VERIFY( !memcmp(buffer, buffer_ref, 16500) );
  54 }
  55
  56 void test02()
  57 {
  58   using namespace std;
  59
  60   typedef istreambuf_iterator<char> in_iterator_type;
  61
  62   ifstream fbuf_ref("istream_unformatted-1.txt"),
  63            fbuf("istream_unformatted-1.txt");
  64
  65   char buffer_ref[16500];
  66   std::vector<char> buffer(16500, 'a');
  67
  68   fbuf_ref.read(buffer_ref, 16500);
  69
  70   in_iterator_type beg(fbuf);
  71   in_iterator_type end;
  72   copy(beg, end, buffer.begin());
  73
  74   VERIFY( fbuf_ref.good() );
  75   VERIFY( fbuf.good() );
  76
  77   VERIFY( !memcmp(buffer.data(), buffer_ref, 16500) );
  78 }
  79
  80 void test03()
  81 {
  82   using namespace std;
  83
  84   typedef istreambuf_iterator<char> in_iterator_type;
  85
  86   ifstream fbuf_ref("istream_unformatted-1.txt"),
  87            fbuf("istream_unformatted-1.txt");
  88
  89   char buffer_ref[16500];
  90   std::deque<char> buffer(16500, 'a');
  91
  92   fbuf_ref.read(buffer_ref, 16500);
  93
  94   in_iterator_type beg(fbuf);
  95   in_iterator_type end;
  96   copy(beg, end, buffer.begin());
  97
  98   VERIFY( fbuf_ref.good() );
  99   VERIFY( fbuf.good() );
 100
 101   VERIFY( std::equal(buffer.begin(), buffer.end(), buffer_ref) );
 102 }
 103
 104 int main()
 105 {
 106   test01();
 107   test02();
 108   test03();
 109   return 0;
 110 }