libstdc++-v3/testsuite/27_io/filesystem/operations/weakly_canonical.cc

   1 // Copyright (C) 2017-2021 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 "-std=gnu++17" }
  19 // { dg-do run { target c++17 } }
  20 // { dg-require-filesystem-ts "" }
  21
  22 #include <filesystem>
  23 #include <testsuite_fs.h>
  24 #include <testsuite_hooks.h>
  25
  26 namespace fs = std::filesystem;
  27
  28 void
  29 test01()
  30 {
  31   const std::error_code bad_ec = make_error_code(std::errc::invalid_argument);
  32   std::error_code ec;
  33
  34   auto dir = __gnu_test::nonexistent_path();
  35   fs::create_directory(dir);
  36   const auto dirc = canonical(dir);
  37   fs::path foo = dir/"foo", bar = dir/"bar";
  38   fs::create_directory(foo);
  39   fs::create_directory(bar);
  40   fs::create_directory(bar/"baz");
  41   fs::path p;
  42
  43 #if defined(__MINGW32__) || defined(__MINGW64__)
  44   // No symlink support
  45 #else
  46   fs::create_symlink("../bar", foo/"bar");
  47
  48   p = fs::weakly_canonical(dir/"foo//./bar///../biz/.");
  49   VERIFY( p == dirc/"biz/" );
  50   p = fs::weakly_canonical(dir/"foo/.//bar/././baz/.");
  51   VERIFY( p == dirc/"bar/baz" );
  52   p = fs::weakly_canonical(fs::current_path()/dir/"bar//../foo/bar/baz");
  53   VERIFY( p == dirc/"bar/baz" );
  54
  55   ec = bad_ec;
  56   p = fs::weakly_canonical(dir/"foo//./bar///../biz/.", ec);
  57   VERIFY( !ec );
  58   VERIFY( p == dirc/"biz/" );
  59   ec = bad_ec;
  60   p = fs::weakly_canonical(dir/"foo/.//bar/././baz/.", ec);
  61   VERIFY( !ec );
  62   VERIFY( p == dirc/"bar/baz" );
  63   ec = bad_ec;
  64   p = fs::weakly_canonical(fs::current_path()/dir/"bar//../foo/bar/baz", ec);
  65   VERIFY( !ec );
  66   VERIFY( p == dirc/"bar/baz" );
  67 #endif
  68
  69   // As above, but using "foo/.." instead of "foo",
  70   // because there is no "foo/bar" symlink
  71
  72   p = fs::weakly_canonical(dir/"./bar///../biz/.");
  73   VERIFY( p == dirc/"biz/" );
  74   p = fs::weakly_canonical(dir/"foo/.././/bar/././baz/.");
  75   VERIFY( p == dirc/"bar/baz" );
  76   p = fs::weakly_canonical(fs::current_path()/dir/"bar//../foo/../bar/baz");
  77   VERIFY( p == dirc/"bar/baz" );
  78
  79   ec = bad_ec;
  80   p = fs::weakly_canonical(dir/"foo/..//./bar///../biz/.", ec);
  81   VERIFY( !ec );
  82   VERIFY( p == dirc/"biz/" );
  83   ec = bad_ec;
  84   p = fs::weakly_canonical(dir/"foo/.././/bar/././baz/.", ec);
  85   VERIFY( !ec );
  86   VERIFY( p == dirc/"bar/baz" );
  87   ec = bad_ec;
  88   p = fs::weakly_canonical(fs::current_path()/dir/"bar//../foo/../bar/baz", ec);
  89   VERIFY( !ec );
  90   VERIFY( p == dirc/"bar/baz" );
  91
  92   fs::remove_all(dir, ec);
  93 }
  94
  95 int
  96 main()
  97 {
  98   test01();
  99 }