libstdc++-v3/testsuite/experimental/filesystem/operations/remove.cc

   1 // Copyright (C) 2018 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 "-DUSE_FILESYSTEM_TS -lstdc++fs" }
  19 // { dg-do run { target c++11 } }
  20 // { dg-require-filesystem-ts "" }
  21
  22 #include <filesystem>
  23 #include <testsuite_hooks.h>
  24 #include <testsuite_fs.h>
  25
  26 namespace fs = std::experimental::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   auto link = __gnu_test::nonexistent_path();
  46   create_symlink(p, link);  // dangling symlink
  47   ec = bad_ec;
  48   n = remove(link, ec);
  49   VERIFY( !ec );
  50   VERIFY( n );
  51   VERIFY( !exists(symlink_status(link)) );
  52
  53   __gnu_test::scoped_file f(p);
  54   create_symlink(p, link);
  55   ec = bad_ec;
  56   n = remove(link, ec);
  57   VERIFY( !ec );
  58   VERIFY( n );
  59   VERIFY( !exists(symlink_status(link)) );  // The symlink is removed, but
  60   VERIFY( exists(p) );                      // its target is not.
  61
  62   ec = bad_ec;
  63   n = remove(p, ec);
  64   VERIFY( !ec );
  65   VERIFY( n );
  66   VERIFY( !exists(symlink_status(p)) );
  67
  68   const auto dir = __gnu_test::nonexistent_path();
  69   create_directories(dir/"a/b");
  70   ec.clear();
  71   n = remove(dir/"a", ec);
  72   VERIFY( ec );
  73   VERIFY( !n );
  74   VERIFY( exists(dir/"a/b") );
  75
  76   permissions(dir, fs::perms::none, ec);
  77   if (!ec)
  78   {
  79     ec.clear();
  80     n = remove(dir/"a/b", ec);
  81     VERIFY( ec );
  82     VERIFY( !n );
  83     permissions(dir, fs::perms::owner_all, ec);
  84   }
  85
  86   ec = bad_ec;
  87   n = remove(dir/"a/b", ec);
  88   VERIFY( !ec );
  89   VERIFY( n );
  90   VERIFY( !exists(dir/"a/b") );
  91
  92   remove(dir/"a", ec);
  93   remove(dir, ec);
  94 }
  95
  96 int
  97 main()
  98 {
  99   test01();
 100 }