libstdc++-v3/testsuite/27_io/filesystem/path/decompose/relative_path.cc

   1 // { dg-do run { target c++17 } }
   2
   3 // Copyright (C) 2014-2024 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 // 8.4.9 path decomposition [path.decompose]
  21
  22 #include <filesystem>
  23 #include <testsuite_hooks.h>
  24 #include <testsuite_fs.h>
  25
  26 using std::filesystem::path;
  27
  28 void
  29 test01()
  30 {
  31   path p1 = "foo";
  32   VERIFY( p1.relative_path() == p1 );
  33   path p2 = "foo/bar";
  34   VERIFY( p2.relative_path() == p2 );
  35   path p3 = "/foo/bar";
  36   VERIFY( p3.relative_path() == p2 );
  37 }
  38
  39 #include <iostream> // XXX
  40
  41 void
  42 test02()
  43 {
  44   for (const path p : __gnu_test::test_paths)
  45   {
  46     bool after_root = false;
  47     const path prel = p.relative_path();
  48     VERIFY( !prel.has_root_name() );
  49     path rel;
  50     for (const auto& cmpt : p)
  51     {
  52       if (!cmpt.has_root_path())
  53         after_root = true;
  54       if (after_root)
  55         rel /= cmpt;
  56     }
  57     if (prel != rel)
  58       std::cout << prel << ' ' << rel << '\n';
  59     VERIFY( prel == rel );
  60   }
  61 }
  62
  63 int
  64 main()
  65 {
  66   test01();
  67   test02();
  68 }