libstdc++-v3/testsuite/27_io/filesystem/path/construct/string_view.cc

   1 // { dg-do run { target c++17 } }
   2
   3 // Copyright (C) 2016-2023 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 8.4.1 path constructors [path.construct]
  21
  22 #include <filesystem>
  23 #include <string_view>
  24 #include <string>
  25 #include <testsuite_fs.h>
  26 #include <testsuite_hooks.h>
  27
  28 using std::filesystem::path;
  29 using __gnu_test::compare_paths;
  30
  31 void
  32 test01()
  33 {
  34   for (std::string s : __gnu_test::test_paths)
  35   {
  36     path p1 = s;
  37     std::string_view sv(s);
  38     path p2 = sv;
  39     compare_paths(p1, p2);
  40
  41 #if _GLIBCXX_USE_WCHAR_T
  42     std::wstring ws(s.begin(), s.end());
  43     path p3 = ws;
  44     std::wstring_view wsv(ws);
  45     path p4 = wsv;
  46     compare_paths(p1, p4);
  47 #endif
  48   }
  49 }
  50
  51 void
  52 test02()
  53 {
  54   std::string s;
  55   for (int i = 0; i < 10; ++i)
  56     s += "0/1/2/3/4/5/6/7/8/9/";
  57   // Construct a path with a large number of components:
  58   path p = s;
  59   auto iter = p.begin();
  60   for (int i = 0; i < 100; ++i)
  61   {
  62     char c = '0' + i % 10;
  63     std::string_view sv(&c, 1);
  64     VERIFY( iter != p.end() );
  65     compare_paths( *iter, sv );
  66     ++iter;
  67   }
  68   VERIFY( iter != p.end() );
  69   VERIFY( iter->native().empty() );
  70   VERIFY( ++iter == p.end() );
  71 }
  72
  73 int
  74 main()
  75 {
  76   test01();
  77   test02();
  78 }