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

   1 // Copyright (C) 2016-2020 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 "-DUSE_FILESYSTEM_TS -lstdc++fs" }
  19 // { dg-do run { target c++11 } }
  20 // { dg-require-filesystem-ts "" }
  21
  22 #include <experimental/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   std::uintmax_t n;
  34
  35   n = fs::remove_all("", ec);
  36   VERIFY( !ec ); // This seems odd, but is what the TS requires.
  37   VERIFY( n == 0 );
  38
  39   auto p = __gnu_test::nonexistent_path();
  40   ec = bad_ec;
  41   n = remove_all(p, ec);
  42   VERIFY( !ec );
  43   VERIFY( n == 0 );
  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_all(link, ec);
  52   VERIFY( !ec );
  53   VERIFY( n == 1 );
  54   VERIFY( !exists(symlink_status(link)) ); // DR 2721
  55
  56   __gnu_test::scoped_file f(p);
  57   create_symlink(p, link);
  58   ec = bad_ec;
  59   n = remove_all(link, ec);
  60   VERIFY( !ec );
  61   VERIFY( n == 1 );
  62   VERIFY( !exists(symlink_status(link)) );  // The symlink is removed, but
  63   VERIFY( exists(p) );                      // its target is not.
  64 #endif
  65
  66   const auto dir = __gnu_test::nonexistent_path();
  67   create_directories(dir/"a/b/c");
  68   ec = bad_ec;
  69   n = remove_all(dir/"a", ec);
  70   VERIFY( !ec );
  71   VERIFY( n == 3 );
  72   VERIFY( exists(dir) );
  73   VERIFY( !exists(dir/"a") );
  74
  75   create_directories(dir/"a/b/c");
  76   __gnu_test::scoped_file a1(dir/"a/1");
  77   __gnu_test::scoped_file a2(dir/"a/2");
  78   __gnu_test::scoped_file b1(dir/"a/b/1");
  79   __gnu_test::scoped_file b2(dir/"a/b/2");
  80   ec = bad_ec;
  81   n = remove_all(dir, ec);
  82   VERIFY( !ec );
  83   VERIFY( n == 8 );
  84   VERIFY( !exists(dir) );
  85
  86   a1.path.clear();
  87   a2.path.clear();
  88   b1.path.clear();
  89   b2.path.clear();
  90 }
  91
  92 void
  93 test02()
  94 {
  95   const auto dir = __gnu_test::nonexistent_path();
  96   create_directories(dir/"a/b/c");
  97   std::uintmax_t n = remove_all(dir/"a");
  98   VERIFY( n == 3 );
  99   VERIFY( exists(dir) );
 100   VERIFY( !exists(dir/"a") );
 101
 102   n = remove_all(dir/"a");
 103   VERIFY( n == 0 );
 104   VERIFY( exists(dir) );
 105
 106   n = remove_all(dir);
 107   VERIFY( n == 1 );
 108   VERIFY( !exists(dir) );
 109 }
 110
 111 void
 112 test04()
 113 {
 114 #if defined(__MINGW32__) || defined(__MINGW64__)
 115   // no permissions
 116 #else
 117   // PR libstdc++/93201
 118   std::error_code ec;
 119   std::uintmax_t n;
 120
 121   auto dir = __gnu_test::nonexistent_path();
 122   fs::create_directory(dir);
 123   __gnu_test::scoped_file f(dir/"file");
 124   // remove write permission on the directory:
 125   fs::permissions(dir, fs::perms::owner_read|fs::perms::owner_exec);
 126   n = fs::remove_all(dir, ec);
 127   VERIFY( n == std::uintmax_t(-1) );
 128   VERIFY( ec == std::errc::permission_denied ); // not ENOTEMPTY
 129
 130   try {
 131     fs::remove_all(dir);
 132     VERIFY( false );
 133   } catch (const fs::filesystem_error& e) {
 134     VERIFY( e.code() == std::errc::permission_denied );
 135     // First path is the argument to remove_all
 136     VERIFY( e.path1() == dir );
 137   }
 138
 139   fs::permissions(dir, fs::perms::owner_write|fs::perms::add_perms);
 140 #endif
 141 }
 142
 143 int
 144 main()
 145 {
 146   test01();
 147   test02();
 148   test04();
 149 }