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

   1 // { dg-options "-std=gnu++17" }
   2 // { dg-do run { target c++17 } }
   3
   4 // Copyright (C) 2016-2020 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 // 8.4.1 path constructors [path.construct]
  22
  23 #include <filesystem>
  24 #include <string_view>
  25 #include <string>
  26 #include <testsuite_fs.h>
  27 #include <testsuite_hooks.h>
  28
  29 using std::filesystem::path;
  30 using __gnu_test::compare_paths;
  31
  32 void
  33 test01()
  34 {
  35   for (std::string s : __gnu_test::test_paths)
  36   {
  37     path p1 = s;
  38     std::string_view sv(s);
  39     path p2 = sv;
  40     compare_paths(p1, p2);
  41
  42 #if _GLIBCXX_USE_WCHAR_T
  43     std::wstring ws(s.begin(), s.end());
  44     path p3 = ws;
  45     std::wstring_view wsv(ws);
  46     path p4 = wsv;
  47     compare_paths(p1, p4);
  48 #endif
  49   }
  50 }
  51
  52 void
  53 test02()
  54 {
  55   std::string s;
  56   for (int i = 0; i < 10; ++i)
  57     s += "0/1/2/3/4/5/6/7/8/9/";
  58   // Construct a path with a large number of components:
  59   path p = s;
  60   auto iter = p.begin();
  61   for (int i = 0; i < 100; ++i)
  62   {
  63     char c = '0' + i % 10;
  64     std::string_view sv(&c, 1);
  65     VERIFY( iter != p.end() );
  66     compare_paths( *iter, sv );
  67     ++iter;
  68   }
  69   VERIFY( iter != p.end() );
  70   VERIFY( iter->native().empty() );
  71   VERIFY( ++iter == p.end() );
  72 }
  73
  74 int
  75 main()
  76 {
  77   test01();
  78   test02();
  79 }