1 // Copyright (C) 2017-2018 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 #include <testsuite_fs.h>
25
26 using std::filesystem::path;
27 using __gnu_test::compare_paths;
28
29 void
test01()30 test01()
31 {
32 // C++17 [fs.path.gen] p5
33 compare_paths( path("/a/d").lexically_relative("/a/b/c"), "../../d" );
34 compare_paths( path("/a/b/c").lexically_relative("/a/d"), "../b/c" );
35 compare_paths( path("a/b/c").lexically_relative("a"), "b/c" );
36 compare_paths( path("a/b/c").lexically_relative("a/b/c/x/y"), "../.." );
37 compare_paths( path("a/b/c").lexically_relative("a/b/c"), "." );
38 compare_paths( path("a/b").lexically_relative("c/d"), "../../a/b" );
39 }
40
41 void
test02()42 test02()
43 {
44 path p = "a/b/c";
45 compare_paths( p.lexically_relative(p), "." );
46 compare_paths( p.lexically_relative("a/../a/b/../b/c/../c/."), "../../b/c" );
47 compare_paths( p.lexically_relative("../../../"), "" );
48
49 compare_paths( path("a/./.").lexically_relative("a"), "./." );
50 }
51
52 void
test03()53 test03()
54 {
55 // LWG 3096
56 compare_paths( path("/dir").lexically_relative("/dir"), "." );
57 compare_paths( path("/dir").lexically_relative("/dir/"), "." );
58 compare_paths( path("/dir").lexically_relative("/dir/."), "." );
59
60 compare_paths( path("/dir/").lexically_relative("/dir"), "." );
61 compare_paths( path("/dir/").lexically_relative("/dir/"), "." );
62 compare_paths( path("/dir/").lexically_relative("/dir/."), "." );
63
64 compare_paths( path("/dir/.").lexically_relative("/dir"), "." );
65 compare_paths( path("/dir/.").lexically_relative("/dir/"), "." );
66 compare_paths( path("/dir/.").lexically_relative("/dir/."), "." );
67 }
68
69 int
main()70 main()
71 {
72 test01();
73 test02();
74 test03();
75 }
76