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()29test01() 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()42test02() 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()64main() 65 { 66 test01(); 67 test02(); 68 } 69