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()30test01() 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()43test02() 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()65main() 66 { 67 test01(); 68 test02(); 69 } 70