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

   1 // Copyright (C) 2016-2024 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-do run { target c++17 } }
  19 // { dg-require-filesystem-ts "" }
  20
  21 #include <filesystem>
  22 #include <testsuite_fs.h>
  23 #include <testsuite_hooks.h>
  24
  25 namespace fs = std::filesystem;
  26
  27 void
  28 test01()
  29 {
  30   auto p1 = __gnu_test::nonexistent_path();
  31   auto p2 = __gnu_test::nonexistent_path();
  32   const std::error_code bad_ec = make_error_code(std::errc::invalid_argument);
  33   std::error_code ec;
  34   bool result;
  35
  36   result = equivalent(p1, p2, ec);
  37   VERIFY( ec == std::errc::no_such_file_or_directory );
  38   VERIFY( !result );
  39
  40   __gnu_test::scoped_file f1(p1);
  41   ec = bad_ec;
  42   result = equivalent(p1, p2, ec);
  43   VERIFY( ec == std::errc::no_such_file_or_directory );
  44   VERIFY( !result );
  45
  46   __gnu_test::scoped_file f2(p2);
  47   ec = bad_ec;
  48   result = equivalent(p1, p2, ec);
  49   VERIFY( !ec );
  50   VERIFY( !result );
  51
  52   auto p3 = __gnu_test::nonexistent_path();
  53   create_hard_link(p1, p3, ec);
  54   if (ec)
  55     return;  // hard links not supported
  56   __gnu_test::scoped_file f3(p3, __gnu_test::scoped_file::adopt_file);
  57
  58   ec = bad_ec;
  59   result = equivalent(p1, p3, ec);
  60   VERIFY( !ec );
  61   VERIFY( result );
  62
  63   ec = bad_ec;
  64   result = equivalent(p2, p3, ec);
  65   VERIFY( !ec );
  66   VERIFY( !result );
  67 }
  68
  69 int
  70 main()
  71 {
  72   test01();
  73 }