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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03
// <experimental/filesystem>
// class recursive_directory_iterator
// recursive_directory_iterator& operator++();
// recursive_directory_iterator& increment(error_code& ec) noexcept;
#include <experimental/filesystem>
#include <type_traits>
#include <set>
#include <cassert>
#include "test_macros.h"
#include "rapid-cxx-test.hpp"
#include "filesystem_test_helper.hpp"
#include <iostream>
using namespace std::experimental::filesystem;
TEST_SUITE(recursive_directory_iterator_increment_tests)
TEST_CASE(test_increment_signatures)
{
using D = recursive_directory_iterator;
recursive_directory_iterator d; ((void)d);
std::error_code ec; ((void)ec);
ASSERT_SAME_TYPE(decltype(++d), recursive_directory_iterator&);
ASSERT_NOT_NOEXCEPT(++d);
ASSERT_SAME_TYPE(decltype(d.increment(ec)), recursive_directory_iterator&);
ASSERT_NOEXCEPT(d.increment(ec));
}
TEST_CASE(test_prefix_increment)
{
const path testDir = StaticEnv::Dir;
const std::set<path> dir_contents(std::begin(StaticEnv::RecDirIterationList),
std::end( StaticEnv::RecDirIterationList));
const recursive_directory_iterator endIt{};
std::error_code ec;
recursive_directory_iterator it(testDir, ec);
TEST_REQUIRE(!ec);
std::set<path> unseen_entries = dir_contents;
while (!unseen_entries.empty()) {
TEST_REQUIRE(it != endIt);
const path entry = *it;
TEST_REQUIRE(unseen_entries.erase(entry) == 1);
recursive_directory_iterator& it_ref = ++it;
TEST_CHECK(&it_ref == &it);
}
TEST_CHECK(it == endIt);
}
TEST_CASE(test_postfix_increment)
{
const path testDir = StaticEnv::Dir;
const std::set<path> dir_contents(std::begin(StaticEnv::RecDirIterationList),
std::end( StaticEnv::RecDirIterationList));
const recursive_directory_iterator endIt{};
std::error_code ec;
recursive_directory_iterator it(testDir, ec);
TEST_REQUIRE(!ec);
std::set<path> unseen_entries = dir_contents;
while (!unseen_entries.empty()) {
TEST_REQUIRE(it != endIt);
const path entry = *it;
TEST_REQUIRE(unseen_entries.erase(entry) == 1);
const path entry2 = *it++;
TEST_CHECK(entry2 == entry);
}
TEST_CHECK(it == endIt);
}
TEST_CASE(test_increment_method)
{
const path testDir = StaticEnv::Dir;
const std::set<path> dir_contents(std::begin(StaticEnv::RecDirIterationList),
std::end( StaticEnv::RecDirIterationList));
const recursive_directory_iterator endIt{};
std::error_code ec;
recursive_directory_iterator it(testDir, ec);
TEST_REQUIRE(!ec);
std::set<path> unseen_entries = dir_contents;
while (!unseen_entries.empty()) {
TEST_REQUIRE(it != endIt);
const path entry = *it;
TEST_REQUIRE(unseen_entries.erase(entry) == 1);
recursive_directory_iterator& it_ref = it.increment(ec);
TEST_REQUIRE(!ec);
TEST_CHECK(&it_ref == &it);
}
TEST_CHECK(it == endIt);
}
TEST_CASE(test_follow_symlinks)
{
const path testDir = StaticEnv::Dir;
auto const& IterList = StaticEnv::RecDirFollowSymlinksIterationList;
const std::set<path> dir_contents(std::begin(IterList), std::end(IterList));
const recursive_directory_iterator endIt{};
std::error_code ec;
recursive_directory_iterator it(testDir,
directory_options::follow_directory_symlink, ec);
TEST_REQUIRE(!ec);
std::set<path> unseen_entries = dir_contents;
while (!unseen_entries.empty()) {
TEST_REQUIRE(it != endIt);
const path entry = *it;
TEST_REQUIRE(unseen_entries.erase(entry) == 1);
recursive_directory_iterator& it_ref = it.increment(ec);
TEST_REQUIRE(!ec);
TEST_CHECK(&it_ref == &it);
}
TEST_CHECK(it == endIt);
}
TEST_CASE(access_denied_on_recursion_test_case)
{
using namespace std::experimental::filesystem;
scoped_test_env env;
const path testFiles[] = {
env.create_dir("dir1"),
env.create_dir("dir1/dir2"),
env.create_file("dir1/dir2/file1"),
env.create_file("dir1/file2")
};
const path startDir = testFiles[0];
const path permDeniedDir = testFiles[1];
const path otherFile = testFiles[3];
auto SkipEPerm = directory_options::skip_permission_denied;
// Change the permissions so we can no longer iterate
permissions(permDeniedDir, perms::none);
const recursive_directory_iterator endIt;
// Test that recursion resulting in a "EACCESS" error is not ignored
// by default.
{
std::error_code ec = GetTestEC();
recursive_directory_iterator it(startDir, ec);
TEST_REQUIRE(ec != GetTestEC());
TEST_REQUIRE(!ec);
while (it != endIt && it->path() != permDeniedDir)
++it;
TEST_REQUIRE(it != endIt);
TEST_REQUIRE(*it == permDeniedDir);
it.increment(ec);
TEST_CHECK(ec);
TEST_CHECK(it == endIt);
}
// Same as above but test operator++().
{
std::error_code ec = GetTestEC();
recursive_directory_iterator it(startDir, ec);
TEST_REQUIRE(!ec);
while (it != endIt && it->path() != permDeniedDir)
++it;
TEST_REQUIRE(it != endIt);
TEST_REQUIRE(*it == permDeniedDir);
TEST_REQUIRE_THROW(filesystem_error, ++it);
}
// Test that recursion resulting in a "EACCESS" error is ignored when the
// correct options are given to the constructor.
{
std::error_code ec = GetTestEC();
recursive_directory_iterator it(startDir, SkipEPerm, ec);
TEST_REQUIRE(!ec);
TEST_REQUIRE(it != endIt);
bool seenOtherFile = false;
if (*it == otherFile) {
++it;
seenOtherFile = true;
TEST_REQUIRE (it != endIt);
}
TEST_REQUIRE(*it == permDeniedDir);
ec = GetTestEC();
it.increment(ec);
TEST_REQUIRE(!ec);
if (seenOtherFile) {
TEST_CHECK(it == endIt);
} else {
TEST_CHECK(it != endIt);
TEST_CHECK(*it == otherFile);
}
}
// Test that construction resulting in a "EACCESS" error is not ignored
// by default.
{
std::error_code ec;
recursive_directory_iterator it(permDeniedDir, ec);
TEST_REQUIRE(ec);
TEST_REQUIRE(it == endIt);
}
// Same as above but testing the throwing constructors
{
TEST_REQUIRE_THROW(filesystem_error,
recursive_directory_iterator(permDeniedDir));
}
// Test that construction resulting in a "EACCESS" error constructs the
// end iterator when the correct options are given.
{
std::error_code ec = GetTestEC();
recursive_directory_iterator it(permDeniedDir, SkipEPerm, ec);
TEST_REQUIRE(!ec);
TEST_REQUIRE(it == endIt);
}
}
TEST_SUITE_END()
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