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

   1 // Copyright (C) 2018-2022 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_hooks.h>
  23 #include <testsuite_fs.h>
  24
  25 namespace fs = std::filesystem;
  26
  27 void
  28 test01()
  29 {
  30   std::error_code ec;
  31   const std::error_code bad_ec = make_error_code(std::errc::invalid_argument);
  32   bool n;
  33
  34   n = fs::remove("", ec);
  35   VERIFY( !ec ); // This seems odd, but is what the standard requires.
  36   VERIFY( !n );
  37
  38   auto p = __gnu_test::nonexistent_path();
  39   ec = bad_ec;
  40   n = remove(p, ec);
  41   VERIFY( !ec );
  42   VERIFY( !n );
  43
  44 #if defined(__MINGW32__) || defined(__MINGW64__)
  45   // No symlink support
  46 #else
  47   auto link = __gnu_test::nonexistent_path();
  48   create_symlink(p, link);  // dangling symlink
  49   ec = bad_ec;
  50   n = remove(link, ec);
  51   VERIFY( !ec );
  52   VERIFY( n );
  53   VERIFY( !exists(symlink_status(link)) );
  54
  55   __gnu_test::scoped_file f(p);
  56   create_symlink(p, link);
  57   ec = bad_ec;
  58   n = remove(link, ec);
  59   VERIFY( !ec );
  60   VERIFY( n );
  61   VERIFY( !exists(symlink_status(link)) );  // The symlink is removed, but
  62   VERIFY( exists(p) );                      // its target is not.
  63
  64   ec = bad_ec;
  65   n = remove(p, ec);
  66   VERIFY( !ec );
  67   VERIFY( n );
  68   VERIFY( !exists(symlink_status(p)) );
  69 #endif
  70
  71   const auto dir = __gnu_test::nonexistent_path();
  72   create_directories(dir/"a/b");
  73   ec.clear();
  74   n = remove(dir/"a", ec);
  75   VERIFY( ec );
  76   VERIFY( !n );
  77   VERIFY( exists(dir/"a/b") );
  78
  79   if (__gnu_test::permissions_are_testable())
  80   {
  81     permissions(dir, fs::perms::none, ec);
  82     if (!ec)
  83     {
  84       ec.clear();
  85       n = remove(dir/"a/b", ec);
  86       VERIFY( ec );
  87       VERIFY( !n );
  88       permissions(dir, fs::perms::owner_all, ec);
  89     }
  90   }
  91
  92   ec = bad_ec;
  93   n = remove(dir/"a/b", ec);
  94   VERIFY( !ec );
  95   VERIFY( n );
  96   VERIFY( !exists(dir/"a/b") );
  97
  98   remove(dir/"a", ec);
  99   remove(dir, ec);
 100 }
 101
 102 int
 103 main()
 104 {
 105   test01();
 106 }