| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++03 |
| |
| // <filesystem> |
| |
| // class directory_iterator |
| |
| // directory_iterator& operator++(); |
| // directory_iterator& increment(error_code& ec); |
| |
| #include "filesystem_include.h" |
| #include <type_traits> |
| #include <set> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "filesystem_test_helper.h" |
| |
| using namespace fs; |
| |
| static void test_increment_signatures() |
| { |
| directory_iterator d; ((void)d); |
| std::error_code ec; ((void)ec); |
| |
| ASSERT_SAME_TYPE(decltype(++d), directory_iterator&); |
| ASSERT_NOT_NOEXCEPT(++d); |
| |
| ASSERT_SAME_TYPE(decltype(d.increment(ec)), directory_iterator&); |
| ASSERT_NOT_NOEXCEPT(d.increment(ec)); |
| } |
| |
| static void test_prefix_increment() |
| { |
| static_test_env static_env; |
| const path testDir = static_env.Dir; |
| const std::set<path> dir_contents(static_env.DirIterationList.begin(), |
| static_env.DirIterationList.end()); |
| const directory_iterator endIt{}; |
| |
| std::error_code ec; |
| directory_iterator it(testDir, ec); |
| assert(!ec); |
| |
| std::set<path> unseen_entries = dir_contents; |
| while (!unseen_entries.empty()) { |
| assert(it != endIt); |
| const path entry = *it; |
| assert(unseen_entries.erase(entry) == 1); |
| directory_iterator& it_ref = ++it; |
| assert(&it_ref == &it); |
| } |
| |
| assert(it == endIt); |
| } |
| |
| static void test_postfix_increment() |
| { |
| static_test_env static_env; |
| const path testDir = static_env.Dir; |
| const std::set<path> dir_contents(static_env.DirIterationList.begin(), |
| static_env.DirIterationList.end()); |
| const directory_iterator endIt{}; |
| |
| std::error_code ec; |
| directory_iterator it(testDir, ec); |
| assert(!ec); |
| |
| std::set<path> unseen_entries = dir_contents; |
| while (!unseen_entries.empty()) { |
| assert(it != endIt); |
| const path entry = *it; |
| assert(unseen_entries.erase(entry) == 1); |
| const path entry2 = *it++; |
| assert(entry2 == entry); |
| } |
| |
| assert(it == endIt); |
| } |
| |
| |
| static void test_increment_method() |
| { |
| static_test_env static_env; |
| const path testDir = static_env.Dir; |
| const std::set<path> dir_contents(static_env.DirIterationList.begin(), |
| static_env.DirIterationList.end()); |
| const directory_iterator endIt{}; |
| |
| std::error_code ec; |
| directory_iterator it(testDir, ec); |
| assert(!ec); |
| |
| std::set<path> unseen_entries = dir_contents; |
| while (!unseen_entries.empty()) { |
| assert(it != endIt); |
| const path entry = *it; |
| assert(unseen_entries.erase(entry) == 1); |
| directory_iterator& it_ref = it.increment(ec); |
| assert(!ec); |
| assert(&it_ref == &it); |
| } |
| |
| assert(it == endIt); |
| } |
| |
| int main(int, char**) { |
| test_increment_signatures(); |
| test_prefix_increment(); |
| test_postfix_increment(); |
| test_increment_method(); |
| |
| return 0; |
| } |