libstdc++-v3/testsuite/27_io/filesystem/operations/equivalent.cc

   1 // Copyright (C) 2016-2017 Free Software Foundation, Inc.
   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 3, 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 COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-std=gnu++17 -lstdc++fs" }
  19 // { dg-do run { target c++17 } }
  20 // { dg-require-filesystem-ts "" }
  21
  22 #include <filesystem>
  23 #include <testsuite_fs.h>
  24 #include <testsuite_hooks.h>
  25
  26 namespace fs = std::filesystem;
  27
  28 void
  29 test01()
  30 {
  31   auto p1 = __gnu_test::nonexistent_path();
  32   auto p2 = __gnu_test::nonexistent_path();
  33   const std::error_code bad_ec = make_error_code(std::errc::invalid_argument);
  34   std::error_code ec;
  35   bool result;
  36
  37   result = equivalent(p1, p2, ec);
  38   VERIFY( ec );
  39   VERIFY( !result );
  40
  41   __gnu_test::scoped_file f1(p1);
  42   ec = bad_ec;
  43   result = equivalent(p1, p2, ec);
  44   VERIFY( !ec );
  45   VERIFY( !result );
  46
  47   __gnu_test::scoped_file f2(p2);
  48   ec = bad_ec;
  49   result = equivalent(p1, p2, ec);
  50   VERIFY( !ec );
  51   VERIFY( !result );
  52
  53   auto p3 = __gnu_test::nonexistent_path();
  54   create_hard_link(p1, p3, ec);
  55   if (ec)
  56     return;  // hard links not supported
  57   __gnu_test::scoped_file f3(p3, __gnu_test::scoped_file::adopt_file);
  58
  59   ec = bad_ec;
  60   result = equivalent(p1, p3, ec);
  61   VERIFY( !ec );
  62   VERIFY( result );
  63
  64   ec = bad_ec;
  65   result = equivalent(p2, p3, ec);
  66   VERIFY( !ec );
  67   VERIFY( !result );
  68 }
  69
  70 int
  71 main()
  72 {
  73   test01();
  74 }