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// Copyright (C) 2015-2019 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-options "-DUSE_FILESYSTEM_TS -lstdc++fs" }
// { dg-do run { target c++11 } }
// { dg-require-filesystem-ts "" }
#include <experimental/filesystem>
#include <testsuite_hooks.h>
#include <testsuite_fs.h>
namespace fs = std::experimental::filesystem;
void
test01()
{
const std::error_code bad_ec = make_error_code(std::errc::invalid_argument);
std::error_code ec;
// Test non-existent path.
const auto p = __gnu_test::nonexistent_path();
fs::recursive_directory_iterator iter(p, ec);
VERIFY( ec );
VERIFY( iter == end(iter) );
// Test empty directory.
ec = bad_ec;
create_directory(p, fs::current_path(), ec);
VERIFY( !ec );
ec = bad_ec;
iter = fs::recursive_directory_iterator(p, ec);
VERIFY( !ec );
VERIFY( iter == end(iter) );
// Test non-empty directory.
ec = bad_ec;
create_directories(p / "d1/d2", ec);
VERIFY( !ec );
ec = bad_ec;
iter = fs::recursive_directory_iterator(p, ec);
VERIFY( !ec );
VERIFY( iter != end(iter) );
VERIFY( iter->path() == p/"d1" );
++iter;
VERIFY( iter != end(iter) );
VERIFY( iter->path() == p/"d1/d2" );
++iter;
VERIFY( iter == end(iter) );
// Test inaccessible directory.
ec = bad_ec;
permissions(p, fs::perms::none, ec);
VERIFY( !ec );
iter = fs::recursive_directory_iterator(p, ec);
VERIFY( ec );
VERIFY( iter == end(iter) );
// Test inaccessible directory, skipping permission denied.
const auto opts = fs::directory_options::skip_permission_denied;
ec = bad_ec;
iter = fs::recursive_directory_iterator(p, opts, ec);
VERIFY( !ec );
VERIFY( iter == end(iter) );
// Test inaccessible sub-directory.
ec = bad_ec;
permissions(p, fs::perms::owner_all, ec);
VERIFY( !ec );
ec = bad_ec;
permissions(p/"d1/d2", fs::perms::none, ec);
VERIFY( !ec );
ec = bad_ec;
iter = fs::recursive_directory_iterator(p, ec);
VERIFY( !ec );
VERIFY( iter != end(iter) );
VERIFY( iter->path() == p/"d1" );
++iter; // should recurse into d1
VERIFY( iter != end(iter) );
VERIFY( iter->path() == p/"d1/d2" );
iter.increment(ec); // should fail to recurse into p/d1/d2
VERIFY( ec );
VERIFY( iter == end(iter) );
// Test inaccessible sub-directory, skipping permission denied.
ec = bad_ec;
iter = fs::recursive_directory_iterator(p, opts, ec);
VERIFY( !ec );
VERIFY( iter != end(iter) );
VERIFY( iter->path() == p/"d1" );
++iter; // should recurse into d1
VERIFY( iter->path() == p/"d1/d2" );
ec = bad_ec;
iter.increment(ec); // should fail to recurse into p/d1/d2, so skip it
VERIFY( !ec );
VERIFY( iter == end(iter) );
permissions(p/"d1/d2", fs::perms::owner_all, ec);
remove_all(p, ec);
}
void
test02()
{
const std::error_code bad_ec = make_error_code(std::errc::invalid_argument);
std::error_code ec;
const auto p = __gnu_test::nonexistent_path();
ec = bad_ec;
create_directories(p / "d1/d2", ec);
VERIFY( !ec );
// Test post-increment (libstdc++/71005)
ec = bad_ec;
auto iter = fs::recursive_directory_iterator(p, ec);
VERIFY( !ec );
VERIFY( iter != end(iter) );
const auto entry1 = *iter;
const auto entry2 = *iter++;
VERIFY( entry1 == entry2 );
VERIFY( entry1.path() == p/"d1" );
const auto entry3 = *iter;
const auto entry4 = *iter++;
VERIFY( entry3 == entry4 );
VERIFY( entry3.path() == p/"d1/d2" );
VERIFY( iter == end(iter) );
remove_all(p, ec);
}
void
test03()
{
std::error_code ec = make_error_code(std::errc::invalid_argument);
const auto p = __gnu_test::nonexistent_path();
create_directories(p / "longer_than_small_string_buffer", ec);
VERIFY( !ec );
// Test for no reallocation on each dereference (this is a GNU extension)
auto iter = fs::recursive_directory_iterator(p, ec);
const auto* s1 = iter->path().c_str();
const auto* s2 = iter->path().c_str();
VERIFY( s1 == s2 );
remove_all(p, ec);
}
void
test04()
{
// libstdc++/71004
const fs::recursive_directory_iterator it;
VERIFY( it == end(it) );
}
void
test05()
{
auto p = __gnu_test::nonexistent_path();
create_directory(p);
create_directory_symlink(p, p / "l");
fs::recursive_directory_iterator it(p), endit;
VERIFY( begin(it) == it );
static_assert( noexcept(begin(it)), "begin is noexcept" );
VERIFY( end(it) == endit );
static_assert( noexcept(end(it)), "end is noexcept" );
}
int
main()
{
test01();
test02();
test03();
test04();
test05();
}
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