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

   1 // Copyright (C) 2015-2019 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 using std::experimental::filesystem::path;
  27
  28 void
  29 test01()
  30 {
  31   const path root = __gnu_test::root_path();
  32
  33   VERIFY( exists(root) );
  34   VERIFY( exists(root/".") );
  35   VERIFY( exists(path{"."}) );
  36   VERIFY( exists(path{".."}) );
  37   VERIFY( exists(std::experimental::filesystem::current_path()) );
  38
  39   std::error_code ec = std::make_error_code(std::errc::invalid_argument);
  40   VERIFY( exists(root, ec) );
  41   VERIFY( !ec );
  42   VERIFY( exists(root/".", ec) );
  43   VERIFY( !ec );
  44   VERIFY( exists(path{"."}, ec) );
  45   VERIFY( !ec );
  46   VERIFY( exists(path{".."}, ec) );
  47   VERIFY( !ec );
  48   VERIFY( exists(std::experimental::filesystem::current_path(), ec) );
  49   VERIFY( !ec );
  50 }
  51
  52 void
  53 test02()
  54 {
  55   path rel = __gnu_test::nonexistent_path();
  56   VERIFY( !exists(rel) );
  57
  58   std::error_code ec = std::make_error_code(std::errc::invalid_argument);
  59   VERIFY( !exists(rel, ec) );
  60   VERIFY( !ec ); // DR 2725
  61 }
  62
  63 void
  64 test03()
  65 {
  66   path abs = absolute(__gnu_test::nonexistent_path());
  67   VERIFY( !exists(abs) );
  68
  69   std::error_code ec = std::make_error_code(std::errc::invalid_argument);
  70   VERIFY( !exists(abs, ec) );
  71   VERIFY( !ec ); // DR 2725
  72 }
  73
  74 void
  75 test04()
  76 {
  77   using perms = std::experimental::filesystem::perms;
  78   path p = __gnu_test::nonexistent_path();
  79   create_directory(p);
  80   permissions(p, perms::all | perms::remove_perms);
  81
  82   auto unr = p / "unreachable";
  83   std::error_code ec;
  84   VERIFY( !exists(unr, ec) );
  85   VERIFY( ec == std::errc::permission_denied );
  86   ec.clear();
  87   try
  88   {
  89     exists(unr);
  90   }
  91   catch(const std::experimental::filesystem::filesystem_error& ex)
  92   {
  93     ec = ex.code();
  94     VERIFY( ex.path1() == unr );
  95   }
  96   VERIFY( ec == std::errc::permission_denied );
  97
  98   permissions(p, perms::owner_all);
  99   remove(p);
 100 }
 101
 102 int
 103 main()
 104 {
 105   test01();
 106   test02();
 107   test03();
 108   test04();
 109 }