// { dg-do run { target c++17 } }

// Copyright (C) 2014-2023 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

// 30.10.7.4.5 path modifiers [fs.path.modifiers]

#include <filesystem>
#include <testsuite_fs.h>
#include <testsuite_hooks.h>

using std::filesystem::path;
using __gnu_test::compare_paths;

void
test01()
{
  compare_paths( path("/foo.txt").replace_extension("cpp"), "/foo.cpp" );
  compare_paths( path("/foo.txt").replace_extension(".cpp"), "/foo.cpp" );
  compare_paths( path("/").replace_extension("bar"), "/.bar" );
  compare_paths( path("/").replace_extension(".bar"), "/.bar" );
  compare_paths( path("/dir/").replace_extension("bar"), "/dir/.bar" );
  compare_paths( path("dir/foo").replace_extension("bar"), "dir/foo.bar" );

  // PR 89117:
  compare_paths( path("/foo.txt").replace_extension(), "/foo" );
  compare_paths( path("foo.txt").replace_extension(), "foo" );
  compare_paths( path("/foo").replace_extension(), "/foo" );
  compare_paths( path("foo").replace_extension(), "foo" );
}

void
test02()
{
  for (const path p : __gnu_test::test_paths)
  {
    path p2 = p;
    compare_paths( p2.replace_extension(p2.extension()), p );
  }
}

int
main()
{
  test01();
  test02();
}