libstdc++-v3/testsuite/27_io/filesystem/operations/temp_directory_path.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 "-std=gnu++17 -lstdc++fs" }
  19 // { dg-do run { target c++17 } }
  20 // { dg-require-filesystem-ts "" }
  21
  22 #include <filesystem>
  23 #include <stdlib.h>
  24 #include <testsuite_hooks.h>
  25 #include <testsuite_fs.h>
  26
  27 void
  28 clean_env()
  29 {
  30 #if defined(__MINGW32__) || defined(__MINGW64__)
  31   ::_putenv("TMP=");
  32   ::_putenv("TEMP=");
  33 #else
  34   ::unsetenv("TMPDIR");
  35   ::unsetenv("TMP");
  36   ::unsetenv("TEMPDIR");
  37   ::unsetenv("TEMP");
  38 #endif
  39 }
  40
  41 bool
  42 set_env(const char* name, std::string value)
  43 {
  44 #if defined(__MINGW32__) || defined(__MINGW64__)
  45   std::string s = name;
  46   s += '=';
  47   s += value;
  48   return !::_putenv(s.c_str());
  49 #else
  50   return !::setenv(name, value.c_str(), 1);
  51 #endif
  52 }
  53
  54 namespace fs = std::filesystem;
  55
  56 void
  57 test01()
  58 {
  59   clean_env();
  60
  61   if (!fs::exists("/tmp"))
  62     return; // just give up
  63
  64   std::error_code ec = make_error_code(std::errc::invalid_argument);
  65   fs::path p1 = fs::temp_directory_path(ec);
  66   VERIFY( !ec );
  67   VERIFY( exists(p1) );
  68
  69   fs::path p2 = fs::temp_directory_path();
  70   VERIFY( p1 == p2 );
  71 }
  72
  73 void
  74 test02()
  75 {
  76   clean_env();
  77
  78   if (!set_env("TMPDIR", __gnu_test::nonexistent_path().string()))
  79     return; // just give up
  80
  81   std::error_code ec;
  82   fs::path p = fs::temp_directory_path(ec);
  83   VERIFY( ec );
  84   VERIFY( p == fs::path() );
  85
  86   std::error_code ec2;
  87   try {
  88     p = fs::temp_directory_path();
  89   } catch (const fs::filesystem_error& e) {
  90     ec2 = e.code();
  91   }
  92   VERIFY( ec2 == ec );
  93 }
  94
  95 void
  96 test03()
  97 {
  98   auto p = __gnu_test::nonexistent_path();
  99   create_directories(p/"tmp");
 100   permissions(p, fs::perms::none);
 101   set_env("TMPDIR", (p/"tmp").string());
 102   std::error_code ec;
 103   auto r = fs::temp_directory_path(ec); // libstdc++/PR71337
 104   VERIFY( ec == std::make_error_code(std::errc::permission_denied) );
 105   VERIFY( r == fs::path() );
 106
 107   std::error_code ec2;
 108   try {
 109     fs::temp_directory_path();
 110   } catch (const fs::filesystem_error& e) {
 111     ec2 = e.code();
 112   }
 113   VERIFY( ec2 == ec );
 114
 115   permissions(p, fs::perms::owner_all, ec);
 116   remove_all(p, ec);
 117 }
 118
 119 void
 120 test04()
 121 {
 122   __gnu_test::scoped_file f;
 123   set_env("TMPDIR", f.path.string());
 124   std::error_code ec;
 125   auto r = fs::temp_directory_path(ec);
 126   VERIFY( ec == std::make_error_code(std::errc::not_a_directory) );
 127   VERIFY( r == fs::path() );
 128
 129   std::error_code ec2;
 130   try {
 131     fs::temp_directory_path();
 132   } catch (const fs::filesystem_error& e) {
 133     ec2 = e.code();
 134   }
 135   VERIFY( ec2 == ec );
 136 }
 137
 138 int
 139 main()
 140 {
 141   test01();
 142   test02();
 143   test03();
 144   test04();
 145 }