libstdc++-v3/testsuite/experimental/filesystem/path/factory/u8path.cc

   1 // Copyright (C) 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 "-lstdc++fs" }
  19 // { dg-do run { target c++11 } }
  20 // { dg-require-filesystem-ts "" }
  21
  22 #include <experimental/filesystem>
  23 #include <testsuite_hooks.h>
  24
  25 namespace fs = std::experimental::filesystem;
  26
  27 void
  28 test01()
  29 {
  30   fs::path p = fs::u8path("");
  31   VERIFY( p.empty() );
  32
  33   p = fs::u8path("filename");
  34   VERIFY( p.u8string() == u8"filename" );
  35
  36   p = fs::u8path("\xf0\x9d\x84\x9e");
  37   VERIFY( p.u8string() == u8"\U0001D11E" );
  38 }
  39
  40 void
  41 test02()
  42 {
  43   // These calls to u8path are undefined, because they fail to meet the
  44   // requirement that the input is valid UTF-8 data. For Windows u8path
  45   // will fail. For POSIX constructing an invalid path appears to work,
  46   // but will fail when converted to a different encoding.
  47
  48   try {
  49     auto p = fs::u8path("\xf0\x9d"); // incomplete surrogate pair
  50     p.u16string();
  51     VERIFY( false );
  52   } catch(const fs::filesystem_error&) {
  53   }
  54
  55   try {
  56     auto p = fs::u8path("\xf0"); // incomplete multibyte character
  57     p.u16string();
  58     VERIFY( false );
  59   } catch(const fs::filesystem_error&) {
  60   }
  61 }
  62
  63 int
  64 main()
  65 {
  66   test01();
  67   test02();
  68 }