1 // { dg-do run { target c++17 } }
2 
3 // Copyright (C) 2014-2021 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 // 8.4.9 path decomposition [path.decompose]
21 
22 #include <filesystem>
23 #include <testsuite_hooks.h>
24 #include <testsuite_fs.h>
25 
26 using std::filesystem::path;
27 
28 void
test01()29 test01()
30 {
31   path p1 = "foo";
32   VERIFY( p1.relative_path() == p1 );
33   path p2 = "foo/bar";
34   VERIFY( p2.relative_path() == p2 );
35   path p3 = "/foo/bar";
36   VERIFY( p3.relative_path() == p2 );
37 }
38 
39 #include <iostream> // XXX
40 
41 void
test02()42 test02()
43 {
44   for (const path p : __gnu_test::test_paths)
45   {
46     bool after_root = false;
47     const path prel = p.relative_path();
48     VERIFY( !prel.has_root_name() );
49     path rel;
50     for (const auto& cmpt : p)
51     {
52       if (!cmpt.has_root_path())
53         after_root = true;
54       if (after_root)
55         rel /= cmpt;
56     }
57     if (prel != rel)
58       std::cout << prel << ' ' << rel << '\n';
59     VERIFY( prel == rel );
60   }
61 }
62 
63 int
main()64 main()
65 {
66   test01();
67   test02();
68 }
69