libstdc++-v3/testsuite/27_io/filesystem/iterators/caching.cc

   1 // Copyright (C) 2019-2024 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_fs.h>
  23 #include <testsuite_hooks.h>
  24
  25 namespace fs = std::filesystem;
  26
  27 __gnu_test::scoped_file
  28 create_dir(fs::path dir = __gnu_test::nonexistent_path())
  29 {
  30   fs::create_directory(dir);
  31   return { dir, __gnu_test::scoped_file::adopt_file };
  32 }
  33
  34 void
  35 test01()
  36 {
  37   auto testdir = create_dir();
  38   __gnu_test::scoped_file file1(testdir.path/"file1");
  39   __gnu_test::scoped_file file2(testdir.path/"file2");
  40
  41   fs::directory_iterator it(testdir.path);
  42   VERIFY( it->is_regular_file() );
  43   ++it;
  44   VERIFY( it->is_regular_file() );
  45   ++it;
  46   VERIFY( it == fs::directory_iterator{} );
  47 }
  48
  49 void
  50 test02()
  51 {
  52   auto testdir = create_dir();
  53   const auto sub1 = create_dir(testdir.path/"sub1");
  54   __gnu_test::scoped_file file1(sub1.path / "file");
  55   const auto sub2 = create_dir(testdir.path/"sub2");
  56   __gnu_test::scoped_file file2(sub2.path / "file");
  57
  58   fs::recursive_directory_iterator it(testdir.path);
  59   VERIFY( it->is_directory() );
  60   ++it;
  61   VERIFY( it->is_regular_file() );
  62   ++it;
  63   VERIFY( it->is_directory() );
  64   ++it;
  65   VERIFY( it->is_regular_file() );
  66   ++it;
  67   VERIFY( it == fs::recursive_directory_iterator{} );
  68 }
  69
  70 int
  71 main()
  72 {
  73   test01();
  74   test02();
  75 }