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

   1 // Copyright (C) 2015-2020 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_hooks.h>
  24 #include <testsuite_fs.h>
  25
  26 namespace fs = std::filesystem;
  27
  28 void
  29 test01()
  30 {
  31   std::error_code ec;
  32   size_t size = fs::file_size(".", ec);
  33   VERIFY( ec == std::errc::is_a_directory );
  34   VERIFY( size == -1 );
  35
  36   try {
  37     size = fs::file_size(".");
  38     ec.clear();
  39   } catch (const fs::filesystem_error& e) {
  40     ec = e.code();
  41   }
  42   VERIFY( ec == std::errc::is_a_directory );
  43   VERIFY( size == -1 );
  44 }
  45
  46 void
  47 test02()
  48 {
  49   fs::path p = __gnu_test::nonexistent_path();
  50
  51   std::error_code ec;
  52   size_t size = fs::file_size(p, ec);
  53   VERIFY( ec );
  54   VERIFY( size == -1 );
  55
  56   try {
  57     size = fs::file_size(p);
  58     ec.clear();
  59   } catch (const fs::filesystem_error& e) {
  60     ec = e.code();
  61   }
  62   VERIFY( ec );
  63   VERIFY( size == -1 );
  64 }
  65
  66 int
  67 main()
  68 {
  69   test01();
  70   test02();
  71 }