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

   1 // Copyright (C) 2015-2024 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-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 <stdlib.h>
  24 #include <stdio.h>
  25 #include <testsuite_hooks.h>
  26 #include <testsuite_fs.h>
  27
  28 void
  29 clean_env()
  30 {
  31 #if defined(__MINGW32__) || defined(__MINGW64__)
  32   ::_putenv("TMP=");
  33   ::_putenv("TEMP=");
  34 #else
  35   ::unsetenv("TMPDIR");
  36   ::unsetenv("TMP");
  37   ::unsetenv("TEMPDIR");
  38   ::unsetenv("TEMP");
  39 #endif
  40 }
  41
  42 bool
  43 set_env(const char* name, std::string value)
  44 {
  45 #if defined(__MINGW32__) || defined(__MINGW64__)
  46   std::string s = name;
  47   s += '=';
  48   s += value;
  49   return !::_putenv(s.c_str());
  50 #else
  51   return !::setenv(name, value.c_str(), 1);
  52 #endif
  53 }
  54
  55 namespace fs = std::experimental::filesystem;
  56
  57 void
  58 test01()
  59 {
  60   clean_env();
  61
  62   if (!fs::exists("/tmp"))
  63   {
  64     puts("/tmp doesn't exist, not testing it for temp_directory_path");
  65     return; // just give up
  66   }
  67
  68   std::error_code ec = make_error_code(std::errc::invalid_argument);
  69   fs::path p1 = fs::temp_directory_path(ec);
  70   VERIFY( !ec );
  71   VERIFY( exists(p1) );
  72
  73   fs::path p2 = fs::temp_directory_path();
  74   VERIFY( p1 == p2 );
  75 }
  76
  77 void
  78 test02()
  79 {
  80   clean_env();
  81
  82   if (!set_env("TMP", __gnu_test::nonexistent_path().string()))
  83   {
  84     puts("Cannot set environment variables, not testing temp_directory_path");
  85     return; // just give up
  86   }
  87
  88   std::error_code ec;
  89   fs::path p = fs::temp_directory_path(ec);
  90   VERIFY( ec );
  91   VERIFY( p == fs::path() );
  92
  93   std::error_code ec2;
  94   try {
  95     p = fs::temp_directory_path();
  96   } catch (const fs::filesystem_error& e) {
  97     ec2 = e.code();
  98   }
  99   VERIFY( ec2 == ec );
 100 }
 101
 102 void
 103 test03()
 104 {
 105   if (!__gnu_test::permissions_are_testable())
 106     return;
 107
 108   clean_env();
 109
 110   auto p = __gnu_test::nonexistent_path();
 111   create_directories(p/"tmp");
 112   permissions(p, fs::perms::none);
 113   set_env("TMPDIR", (p/"tmp").string());
 114   std::error_code ec;
 115   auto r = fs::temp_directory_path(ec); // libstdc++/PR71337
 116   VERIFY( ec == std::make_error_code(std::errc::permission_denied) );
 117   VERIFY( r == fs::path() );
 118
 119   std::error_code ec2;
 120   try {
 121     (void) fs::temp_directory_path();
 122   } catch (const fs::filesystem_error& e) {
 123     ec2 = e.code();
 124   }
 125   VERIFY( ec2 == ec );
 126
 127   permissions(p, fs::perms::owner_all, ec);
 128   remove_all(p, ec);
 129 }
 130
 131 void
 132 test04()
 133 {
 134   clean_env();
 135
 136   __gnu_test::scoped_file f;
 137   set_env("TMP", f.path.string());
 138   std::error_code ec;
 139   auto r = fs::temp_directory_path(ec);
 140   VERIFY( ec == std::make_error_code(std::errc::not_a_directory) );
 141   VERIFY( r == fs::path() );
 142
 143   std::error_code ec2;
 144   std::string failed_path;
 145   try {
 146     (void) fs::temp_directory_path();
 147   } catch (const fs::filesystem_error& e) {
 148     ec2 = e.code();
 149     // On Windows the returned path will be in preferred form, i.e. using L'\\'
 150     // and will have a trailing slash, so compare generic forms.
 151     failed_path = e.path1().generic_string();
 152   }
 153   VERIFY( ec2 == ec );
 154   VERIFY( failed_path.find(f.path.generic_string()) != std::string::npos );
 155 }
 156
 157 int
 158 main()
 159 {
 160   test01();
 161   test02();
 162   test03();
 163   test04();
 164 }