libstdc++-v3/testsuite/27_io/filesystem/path/generation/proximate.cc

   1 // Copyright (C) 2017 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-std=gnu++17 -lstdc++fs" }
  19 // { dg-do run { target c++17 } }
  20 // { dg-require-filesystem-ts "" }
  21
  22 #include <filesystem>
  23 #include <testsuite_hooks.h>
  24 #include <testsuite_fs.h>
  25
  26 using std::filesystem::path;
  27 using __gnu_test::compare_paths;
  28
  29 void
  30 test01()
  31 {
  32   // C++17 [fs.path.gen] p5
  33   compare_paths( path("/a/d").lexically_proximate("/a/b/c"), "../../d" );
  34   compare_paths( path("/a/b/c").lexically_proximate("/a/d"), "../b/c" );
  35   compare_paths( path("a/b/c").lexically_proximate("a"), "b/c" );
  36   compare_paths( path("a/b/c").lexically_proximate("a/b/c/x/y"), "../.." );
  37   compare_paths( path("a/b/c").lexically_proximate("a/b/c"), "." );
  38   compare_paths( path("a/b").lexically_proximate("c/d"), "../../a/b" );
  39 }
  40
  41 void
  42 test02()
  43 {
  44   path p = "a/b/c";
  45   compare_paths( p.lexically_proximate(p), "." );
  46   compare_paths( p.lexically_proximate("a/../a/b/../b/c/../c/."), "../../b/c" );
  47   compare_paths( p.lexically_proximate("../../../"), p );
  48 }
  49
  50 int
  51 main()
  52 {
  53   test01();
  54   test02();
  55 }