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

   1 // Copyright (C) 2015-2023 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 <stdlib.h>
  23 #include <stdio.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   {
  63     puts("/tmp doesn't exist, not testing it for temp_directory_path");
  64     return; // just give up
  65   }
  66
  67   std::error_code ec = make_error_code(std::errc::invalid_argument);
  68   fs::path p1 = fs::temp_directory_path(ec);
  69   VERIFY( !ec );
  70   VERIFY( exists(p1) );
  71
  72   fs::path p2 = fs::temp_directory_path();
  73   VERIFY( p1 == p2 );
  74 }
  75
  76 void
  77 test02()
  78 {
  79   clean_env();
  80
  81   if (!set_env("TMP", __gnu_test::nonexistent_path().string()))
  82   {
  83     puts("Cannot set environment variables, not testing temp_directory_path");
  84     return; // just give up
  85   }
  86
  87   std::error_code ec;
  88   fs::path p = fs::temp_directory_path(ec);
  89   VERIFY( ec );
  90   VERIFY( p == fs::path() );
  91
  92   std::error_code ec2;
  93   try {
  94     p = fs::temp_directory_path();
  95   } catch (const fs::filesystem_error& e) {
  96     ec2 = e.code();
  97   }
  98   VERIFY( ec2 == ec );
  99 }
 100
 101 void
 102 test03()
 103 {
 104   if (!__gnu_test::permissions_are_testable())
 105     return;
 106
 107   clean_env();
 108
 109   auto p = __gnu_test::nonexistent_path();
 110   create_directories(p/"tmp");
 111   permissions(p, fs::perms::none);
 112   set_env("TMPDIR", (p/"tmp").string());
 113   std::error_code ec;
 114   auto r = fs::temp_directory_path(ec); // libstdc++/PR71337
 115   VERIFY( ec == std::make_error_code(std::errc::permission_denied) );
 116   VERIFY( r == fs::path() );
 117
 118   std::error_code ec2;
 119   try {
 120     (void) fs::temp_directory_path();
 121   } catch (const fs::filesystem_error& e) {
 122     ec2 = e.code();
 123   }
 124   VERIFY( ec2 == ec );
 125
 126   permissions(p, fs::perms::owner_all, ec);
 127   remove_all(p, ec);
 128 }
 129
 130 void
 131 test04()
 132 {
 133   clean_env();
 134
 135   __gnu_test::scoped_file f;
 136   set_env("TMP", f.path.string());
 137   std::error_code ec;
 138   auto r = fs::temp_directory_path(ec);
 139   VERIFY( ec == std::make_error_code(std::errc::not_a_directory) );
 140   VERIFY( r == fs::path() );
 141
 142   std::error_code ec2;
 143   std::string failed_path;
 144   try {
 145     (void) fs::temp_directory_path();
 146   } catch (const fs::filesystem_error& e) {
 147     ec2 = e.code();
 148     // On Windows the returned path will be in preferred form, i.e. using L'\\'
 149     // and will have a trailing slash, so compare generic forms.
 150     failed_path = e.path1().generic_string();
 151   }
 152   VERIFY( ec2 == ec );
 153   VERIFY( failed_path.find(f.path.generic_string()) != std::string::npos );
 154 }
 155
 156 int
 157 main()
 158 {
 159   test01();
 160   test02();
 161   test03();
 162   test04();
 163 }