recursion_pending.pass.cpp
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//===----------------------------------------------------------------------===//
//
// 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 recursive_directory_iterator
// bool recursion_pending() const;
#include "filesystem_include.h"
#include <type_traits>
#include <set>
#include <cassert>
#include "test_macros.h"
#include "rapid-cxx-test.h"
#include "filesystem_test_helper.h"
using namespace fs;
TEST_SUITE(recursive_directory_iterator_recursion_pending_tests)
TEST_CASE(initial_value_test)
{
static_test_env static_env;
recursive_directory_iterator it(static_env.Dir);
TEST_REQUIRE(it.recursion_pending() == true);
}
TEST_CASE(value_after_copy_construction_and_assignment_test)
{
static_test_env static_env;
recursive_directory_iterator rec_pending_it(static_env.Dir);
recursive_directory_iterator no_rec_pending_it(static_env.Dir);
no_rec_pending_it.disable_recursion_pending();
{ // copy construction
recursive_directory_iterator it(rec_pending_it);
TEST_CHECK(it.recursion_pending() == true);
it.disable_recursion_pending();
TEST_REQUIRE(rec_pending_it.recursion_pending() == true);
recursive_directory_iterator it2(no_rec_pending_it);
TEST_CHECK(it2.recursion_pending() == false);
}
{ // copy assignment
recursive_directory_iterator it(static_env.Dir);
it.disable_recursion_pending();
it = rec_pending_it;
TEST_CHECK(it.recursion_pending() == true);
it.disable_recursion_pending();
TEST_REQUIRE(rec_pending_it.recursion_pending() == true);
recursive_directory_iterator it2(static_env.Dir);
it2 = no_rec_pending_it;
TEST_CHECK(it2.recursion_pending() == false);
}
TEST_CHECK(rec_pending_it.recursion_pending() == true);
TEST_CHECK(no_rec_pending_it.recursion_pending() == false);
}
TEST_CASE(value_after_move_construction_and_assignment_test)
{
static_test_env static_env;
recursive_directory_iterator rec_pending_it(static_env.Dir);
recursive_directory_iterator no_rec_pending_it(static_env.Dir);
no_rec_pending_it.disable_recursion_pending();
{ // move construction
recursive_directory_iterator it_cp(rec_pending_it);
recursive_directory_iterator it(std::move(it_cp));
TEST_CHECK(it.recursion_pending() == true);
recursive_directory_iterator it_cp2(no_rec_pending_it);
recursive_directory_iterator it2(std::move(it_cp2));
TEST_CHECK(it2.recursion_pending() == false);
}
{ // copy assignment
recursive_directory_iterator it(static_env.Dir);
it.disable_recursion_pending();
recursive_directory_iterator it_cp(rec_pending_it);
it = std::move(it_cp);
TEST_CHECK(it.recursion_pending() == true);
recursive_directory_iterator it2(static_env.Dir);
recursive_directory_iterator it_cp2(no_rec_pending_it);
it2 = std::move(it_cp2);
TEST_CHECK(it2.recursion_pending() == false);
}
TEST_CHECK(rec_pending_it.recursion_pending() == true);
TEST_CHECK(no_rec_pending_it.recursion_pending() == false);
}
TEST_CASE(increment_resets_value)
{
static_test_env static_env;
const recursive_directory_iterator endIt;
{
recursive_directory_iterator it(static_env.Dir);
it.disable_recursion_pending();
TEST_CHECK(it.recursion_pending() == false);
++it;
TEST_CHECK(it.recursion_pending() == true);
TEST_CHECK(it.depth() == 0);
}
{
recursive_directory_iterator it(static_env.Dir);
it.disable_recursion_pending();
TEST_CHECK(it.recursion_pending() == false);
it++;
TEST_CHECK(it.recursion_pending() == true);
TEST_CHECK(it.depth() == 0);
}
{
recursive_directory_iterator it(static_env.Dir);
it.disable_recursion_pending();
TEST_CHECK(it.recursion_pending() == false);
std::error_code ec;
it.increment(ec);
TEST_CHECK(it.recursion_pending() == true);
TEST_CHECK(it.depth() == 0);
}
}
TEST_CASE(pop_does_not_reset_value)
{
static_test_env static_env;
const recursive_directory_iterator endIt;
auto& DE0 = static_env.DirIterationList;
std::set<path> notSeenDepth0(DE0.begin(), DE0.end());
recursive_directory_iterator it(static_env.Dir);
TEST_REQUIRE(it != endIt);
while (it.depth() == 0) {
notSeenDepth0.erase(it->path());
++it;
TEST_REQUIRE(it != endIt);
}
TEST_REQUIRE(it.depth() == 1);
it.disable_recursion_pending();
it.pop();
// Since the order of iteration is unspecified the pop() could result
// in the end iterator. When this is the case it is undefined behavior
// to call recursion_pending().
if (it == endIt) {
TEST_CHECK(notSeenDepth0.empty());
#if defined(_LIBCPP_VERSION)
TEST_CHECK(it.recursion_pending() == false);
#endif
} else {
TEST_CHECK(! notSeenDepth0.empty());
TEST_CHECK(it.recursion_pending() == false);
}
}
TEST_SUITE_END()