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

   1 // Copyright (C) 2016-2017 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 "-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   std::uintmax_t n;
  33
  34   n = fs::remove_all("", ec);
  35   VERIFY( ec );
  36   VERIFY( n == std::uintmax_t(-1) );
  37
  38   auto p = __gnu_test::nonexistent_path();
  39   ec.clear();
  40   n = remove_all(p, ec);
  41   VERIFY( ec );
  42   VERIFY( n == std::uintmax_t(-1) );
  43
  44   const auto bad_ec = ec;
  45   auto link = __gnu_test::nonexistent_path();
  46   create_symlink(p, link);  // dangling symlink
  47   ec = bad_ec;
  48   n = remove_all(link, ec);
  49   VERIFY( !ec );
  50   VERIFY( n == 1 );
  51   VERIFY( !exists(symlink_status(link)) ); // DR 2721
  52
  53   __gnu_test::scoped_file f(p);
  54   create_symlink(p, link);
  55   ec = bad_ec;
  56   n = remove_all(link, ec);
  57   VERIFY( !ec );
  58   VERIFY( n == 1 );
  59   VERIFY( !exists(symlink_status(link)) );  // The symlink is removed, but
  60   VERIFY( exists(p) );                      // its target is not.
  61
  62   auto dir = __gnu_test::nonexistent_path();
  63   create_directories(dir/"a/b/c");
  64   ec = bad_ec;
  65   n = remove_all(dir/"a", ec);
  66   VERIFY( !ec );
  67   VERIFY( n == 3 );
  68   VERIFY( exists(dir) );
  69   VERIFY( !exists(dir/"a") );
  70
  71   create_directories(dir/"a/b/c");
  72   __gnu_test::scoped_file a1(dir/"a/1");
  73   __gnu_test::scoped_file a2(dir/"a/2");
  74   __gnu_test::scoped_file b1(dir/"a/b/1");
  75   __gnu_test::scoped_file b2(dir/"a/b/2");
  76   ec = bad_ec;
  77   n = remove_all(dir, ec);
  78   VERIFY( !ec );
  79   VERIFY( n == 8 );
  80   VERIFY( !exists(dir) );
  81
  82   a1.path.clear();
  83   a2.path.clear();
  84   b1.path.clear();
  85   b2.path.clear();
  86 }
  87
  88 int
  89 main()
  90 {
  91   test01();
  92 }