libstdc++-v3/testsuite/27_io/filesystem/path/decompose/filename.cc

   1 // { dg-options "-std=gnu++17 -lstdc++fs" }
   2 // { dg-do run { target c++17 } }
   3 // { dg-require-filesystem-ts "" }
   4
   5 // Copyright (C) 2014-2018 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 // C++17 30.10.7.4.9 path decomposition [fs.path.decompose]
  23
  24 #include <filesystem>
  25 #include <testsuite_hooks.h>
  26 #include <testsuite_fs.h>
  27
  28 using std::filesystem::path;
  29
  30 void
  31 test01()
  32 {
  33   // [fs.path.decompose] p7
  34   VERIFY( path("/foo/bar.txt").filename() == "bar.txt" );
  35   VERIFY( path("/foo/bar").filename()     == "bar"     );
  36   VERIFY( path("/foo/bar/").filename()    == ""        );
  37   VERIFY( path("/").filename()            == ""        );
  38 #ifdef __CYGWIN__
  39   VERIFY( path("//host").filename()       == ""        );
  40 #else
  41   VERIFY( path("//host").filename()       == "host"    );
  42 #endif
  43   VERIFY( path(".").filename()            == "."       );
  44   VERIFY( path("..").filename()           == ".."      );
  45 }
  46
  47 void
  48 test02()
  49 {
  50   for (const path& p : __gnu_test::test_paths)
  51   {
  52     path f = p.filename();
  53     if (p.empty())
  54       VERIFY( f.empty() );
  55     else
  56     {
  57       const path back = *--p.end();
  58       if (back.has_root_path())
  59         VERIFY( f.empty() );
  60       else
  61         VERIFY( f == back );
  62     }
  63   }
  64 }
  65
  66 int
  67 main()
  68 {
  69   test01();
  70   test02();
  71 }