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

   1 // Copyright (C) 2017-2021 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" }
  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::proximate;
  27 using __gnu_test::compare_paths;
  28
  29 // Normalize directory-separators
  30 std::string operator""_norm(const char* s, std::size_t n)
  31 {
  32   std::string str(s, n);
  33 #if defined(__MING32__) || defined(__MINGW64__)
  34   for (auto& c : str)
  35     if (c == '/')
  36       c = '\\';
  37 #endif
  38   return str;
  39 }
  40
  41 void
  42 test01()
  43 {
  44   compare_paths( proximate("/a/d", "/a/b/c"), "../../d"_norm );
  45   compare_paths( proximate("/a/b/c", "/a/d"), "../b/c"_norm );
  46   compare_paths( proximate("a/b/c", "a"), "b/c"_norm );
  47   compare_paths( proximate("a/b/c", "a/b/c/x/y"), "../.."_norm );
  48   compare_paths( proximate("a/b/c", "a/b/c"), "." );
  49   compare_paths( proximate("a/b", "c/d"), "../../a/b"_norm );
  50 }
  51
  52 void
  53 test02()
  54 {
  55   const std::error_code bad_ec = make_error_code(std::errc::invalid_argument);
  56   std::error_code ec = bad_ec;
  57   compare_paths( proximate("/a/d", "/a/b/c", ec), "../../d"_norm );
  58   VERIFY( !ec );
  59   ec = bad_ec;
  60   compare_paths( proximate("/a/b/c", "/a/d", ec), "../b/c"_norm );
  61   VERIFY( !ec );
  62   ec = bad_ec;
  63   compare_paths( proximate("a/b/c", "a", ec), "b/c"_norm );
  64   VERIFY( !ec );
  65   ec = bad_ec;
  66   compare_paths( proximate("a/b/c", "a/b/c/x/y", ec), "../.."_norm );
  67   VERIFY( !ec );
  68   ec = bad_ec;
  69   compare_paths( proximate("a/b/c", "a/b/c", ec), "." );
  70   VERIFY( !ec );
  71   ec = bad_ec;
  72   compare_paths( proximate("a/b", "c/d", ec), "../../a/b"_norm );
  73   VERIFY( !ec );
  74 }
  75
  76 int
  77 main()
  78 {
  79   test01();
  80   test02();
  81 }