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

   1 // Copyright (C) 2018-2020 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" }
  19 // { dg-do run { target c++17 } }
  20 // { dg-require-filesystem-ts "" }
  21
  22 #include <filesystem>
  23 #include <testsuite_hooks.h>
  24 #include <testsuite_fs.h>
  25
  26 namespace fs = std::filesystem;
  27
  28 void
  29 test01()
  30 {
  31   std::error_code ec;
  32   const std::error_code bad_ec = make_error_code(std::errc::invalid_argument);
  33   bool n;
  34
  35   n = fs::remove("", ec);
  36   VERIFY( !ec ); // This seems odd, but is what the standard requires.
  37   VERIFY( !n );
  38
  39   auto p = __gnu_test::nonexistent_path();
  40   ec = bad_ec;
  41   n = remove(p, ec);
  42   VERIFY( !ec );
  43   VERIFY( !n );
  44
  45 #if defined(__MINGW32__) || defined(__MINGW64__)
  46   // No symlink support
  47 #else
  48   auto link = __gnu_test::nonexistent_path();
  49   create_symlink(p, link);  // dangling symlink
  50   ec = bad_ec;
  51   n = remove(link, ec);
  52   VERIFY( !ec );
  53   VERIFY( n );
  54   VERIFY( !exists(symlink_status(link)) );
  55
  56   __gnu_test::scoped_file f(p);
  57   create_symlink(p, link);
  58   ec = bad_ec;
  59   n = remove(link, ec);
  60   VERIFY( !ec );
  61   VERIFY( n );
  62   VERIFY( !exists(symlink_status(link)) );  // The symlink is removed, but
  63   VERIFY( exists(p) );                      // its target is not.
  64
  65   ec = bad_ec;
  66   n = remove(p, ec);
  67   VERIFY( !ec );
  68   VERIFY( n );
  69   VERIFY( !exists(symlink_status(p)) );
  70 #endif
  71
  72   const auto dir = __gnu_test::nonexistent_path();
  73   create_directories(dir/"a/b");
  74   ec.clear();
  75   n = remove(dir/"a", ec);
  76   VERIFY( ec );
  77   VERIFY( !n );
  78   VERIFY( exists(dir/"a/b") );
  79
  80 #if defined(__MINGW32__) || defined(__MINGW64__)
  81   // No permissions support
  82 #else
  83   permissions(dir, fs::perms::none, ec);
  84   if (!ec)
  85   {
  86     ec.clear();
  87     n = remove(dir/"a/b", ec);
  88     VERIFY( ec );
  89     VERIFY( !n );
  90     permissions(dir, fs::perms::owner_all, ec);
  91   }
  92 #endif
  93
  94   ec = bad_ec;
  95   n = remove(dir/"a/b", ec);
  96   VERIFY( !ec );
  97   VERIFY( n );
  98   VERIFY( !exists(dir/"a/b") );
  99
 100   remove(dir/"a", ec);
 101   remove(dir, ec);
 102 }
 103
 104 int
 105 main()
 106 {
 107   test01();
 108 }