libstdc++-v3/testsuite/27_io/filesystem/path/compare/lwg2936.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 // C++17 30.10.8.4.8 path compare [fs.path.compare]
  21
  22 #include <filesystem>
  23 #include <testsuite_hooks.h>
  24 #include <testsuite_fs.h>
  25
  26 using std::filesystem::path;
  27
  28 int norm(int i)
  29 {
  30   if (i < 0)
  31     return -1;
  32   else if (i > 0)
  33     return +1;
  34   else
  35     return 0;
  36 }
  37
  38 void
  39 check(const path& lhs, const path& rhs, int sense)
  40 {
  41   VERIFY( lhs.compare(lhs) == 0 );
  42   VERIFY( rhs.compare(rhs) == 0 );
  43
  44   VERIFY( norm(lhs.compare(rhs)) == sense );
  45   VERIFY( norm(lhs.compare(rhs.c_str())) == sense );
  46
  47   VERIFY( norm(rhs.compare(lhs)) == -sense );
  48   VERIFY( norm(rhs.compare(lhs.c_str())) == -sense );
  49 }
  50
  51 void
  52 test01()
  53 {
  54   check("", "", 0);
  55
  56   // These are root names on Windows (just relative paths elsewhere)
  57   check("", "c:", -1);
  58   check("c:", "d:", -1);
  59   check("c:", "c:/", -1);
  60   check("d:", "c:/", +1);
  61 #if defined(__MINGW32__) || defined(__MINGW64__)
  62   check("c:/a/b", "c:a/b", +1);
  63 #else
  64   check("c:/a/b", "c:a/b", -1);
  65 #endif
  66
  67   // These are root names on Cygwin (just relative paths elsewhere)
  68   check("", "//c", -1);
  69   check("//c", "//d", -1);
  70   check("//c", "//c/", -1);
  71   check("//d", "//c/", +1);
  72
  73   check("a", "/", -1);
  74   check("/a", "/b", -1);
  75   check("a", "/b", -1);
  76   check("/b", "b", +1);
  77 }
  78
  79 int
  80 main()
  81 {
  82   test01();
  83 }