libstdc++-v3/testsuite/27_io/filesystem/operations/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
  25 using std::filesystem::proximate;
  26
  27 void
  28 test01()
  29 {
  30   VERIFY( proximate("/a/d", "/a/b/c") == "../../d" );
  31   VERIFY( proximate("/a/b/c", "/a/d") == "../b/c" );
  32   VERIFY( proximate("a/b/c", "a") == "b/c" );
  33   VERIFY( proximate("a/b/c", "a/b/c/x/y") == "../.." );
  34   VERIFY( proximate("a/b/c", "a/b/c") == "." );
  35   VERIFY( proximate("a/b", "c/d") == "../../a/b" );
  36 }
  37
  38 void
  39 test02()
  40 {
  41   const std::error_code bad_ec = make_error_code(std::errc::invalid_argument);
  42   std::error_code ec = bad_ec;
  43   VERIFY( proximate("/a/d", "/a/b/c", ec) == "../../d" );
  44   VERIFY( !ec );
  45   ec = bad_ec;
  46   VERIFY( proximate("/a/b/c", "/a/d", ec) == "../b/c" );
  47   VERIFY( !ec );
  48   ec = bad_ec;
  49   VERIFY( proximate("a/b/c", "a", ec) == "b/c" );
  50   VERIFY( !ec );
  51   ec = bad_ec;
  52   VERIFY( proximate("a/b/c", "a/b/c/x/y", ec) == "../.." );
  53   VERIFY( !ec );
  54   ec = bad_ec;
  55   VERIFY( proximate("a/b/c", "a/b/c", ec) == "." );
  56   VERIFY( !ec );
  57   ec = bad_ec;
  58   VERIFY( proximate("a/b", "c/d", ec) == "../../a/b" );
  59   VERIFY( !ec );
  60 }
  61
  62 int
  63 main()
  64 {
  65   test01();
  66   test02();
  67 }