1 // { dg-options "-std=gnu++17" }
2 // { dg-do run { target c++17 } }
3 
4 // Copyright (C) 2014-2020 Free Software Foundation, Inc.
5 //
6 // This file is part of the GNU ISO C++ Library.  This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 3, or (at your option)
10 // any later version.
11 
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 // GNU General Public License for more details.
16 
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING3.  If not see
19 // <http://www.gnu.org/licenses/>.
20 
21 // 8.4.9 path decomposition [path.decompose]
22 
23 #include <filesystem>
24 #include <testsuite_hooks.h>
25 #include <testsuite_fs.h>
26 
27 using std::filesystem::path;
28 
29 void
test01()30 test01()
31 {
32   path p1 = "foo";
33   VERIFY( p1.relative_path() == p1 );
34   path p2 = "foo/bar";
35   VERIFY( p2.relative_path() == p2 );
36   path p3 = "/foo/bar";
37   VERIFY( p3.relative_path() == p2 );
38 }
39 
40 #include <iostream> // XXX
41 
42 void
test02()43 test02()
44 {
45   for (const path& p : __gnu_test::test_paths)
46   {
47     bool after_root = false;
48     const path prel = p.relative_path();
49     VERIFY( !prel.has_root_name() );
50     path rel;
51     for (const auto& cmpt : p)
52     {
53       if (!cmpt.has_root_path())
54         after_root = true;
55       if (after_root)
56         rel /= cmpt;
57     }
58     if (prel != rel)
59       std::cout << prel << ' ' << rel << '\n';
60     VERIFY( prel == rel );
61   }
62 }
63 
64 int
main()65 main()
66 {
67   test01();
68   test02();
69 }
70