libstdc++-v3/testsuite/27_io/filesystem/path/compare/strings.cc

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

// Copyright (C) 2014-2026 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/>.

// C++17 30.10.8.4.8 path compare [fs.path.compare]

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

using std::filesystem::path;

int sign(int i) { return i > 0 ? 1 : i < 0 ? -1 : 0; }

void
test01()
{
  const std::string s0 = "/a/a/b/b";
  const path p0 = s0;
  for (const std::string& s : __gnu_test::test_paths)
  {
    path p(s);
    VERIFY( p.compare(s) == 0 );
    VERIFY( p.compare(s.c_str()) == 0 );
    VERIFY( sign(p.compare(p0)) == sign(p.compare(s0)) );
    VERIFY( sign(p.compare(p0)) == sign(p.compare(s0.c_str())) );
  }
}

void
test02()
{
  VERIFY( path("/").compare("////") == 0 );
  VERIFY( path("/a").compare("/") > 0 );
  VERIFY( path("/").compare("/a") < 0 );
  VERIFY( path("/ab").compare("/a") > 0 );
  VERIFY( path("/ab").compare("/a/b") > 0 );
}

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