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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
// recursive_directory_iterator& operator=(recursive_directory_iterator 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"
// The filesystem specification explicitly allows for self-move on
// the directory iterators. Turn off this warning so we can test it.
#if defined(__clang__)
#pragma clang diagnostic ignored "-Wself-move"
#endif
using namespace fs;
TEST_SUITE(recursive_directory_iterator_move_assign_tests)
recursive_directory_iterator createInterestingIterator(const static_test_env &static_env)
// Create an "interesting" iterator where all fields are
// in a non-default state. The returned 'it' is in a
// state such that:
// it.options() == directory_options::skip_permission_denied
// it.depth() == 1
// it.recursion_pending() == true
{
const path testDir = static_env.Dir;
const recursive_directory_iterator endIt;
recursive_directory_iterator it(testDir,
directory_options::skip_permission_denied);
TEST_ASSERT(it != endIt);
while (it.depth() != 1) {
++it;
TEST_ASSERT(it != endIt);
}
TEST_ASSERT(it.depth() == 1);
it.disable_recursion_pending();
return it;
}
recursive_directory_iterator createDifferentInterestingIterator(const static_test_env &static_env)
// Create an "interesting" iterator where all fields are
// in a non-default state. The returned 'it' is in a
// state such that:
// it.options() == directory_options::follow_directory_symlink
// it.depth() == 2
// it.recursion_pending() == false
{
const path testDir = static_env.Dir;
const recursive_directory_iterator endIt;
recursive_directory_iterator it(testDir,
directory_options::follow_directory_symlink);
TEST_ASSERT(it != endIt);
while (it.depth() != 2) {
++it;
TEST_ASSERT(it != endIt);
}
TEST_ASSERT(it.depth() == 2);
return it;
}
TEST_CASE(test_assignment_signature)
{
using D = recursive_directory_iterator;
static_assert(std::is_nothrow_move_assignable<D>::value, "");
}
TEST_CASE(test_move_to_end_iterator)
{
static_test_env static_env;
const recursive_directory_iterator endIt;
recursive_directory_iterator from = createInterestingIterator(static_env);
const recursive_directory_iterator from_copy(from);
const path entry = *from;
recursive_directory_iterator to;
to = std::move(from);
TEST_REQUIRE(to != endIt);
TEST_CHECK(*to == entry);
TEST_CHECK(to.options() == from_copy.options());
TEST_CHECK(to.depth() == from_copy.depth());
TEST_CHECK(to.recursion_pending() == from_copy.recursion_pending());
TEST_CHECK(from == endIt || from == to);
}
TEST_CASE(test_move_from_end_iterator)
{
static_test_env static_env;
recursive_directory_iterator from;
recursive_directory_iterator to = createInterestingIterator(static_env);
to = std::move(from);
TEST_REQUIRE(to == from);
TEST_CHECK(to == recursive_directory_iterator{});
}
TEST_CASE(test_move_valid_iterator)
{
static_test_env static_env;
const recursive_directory_iterator endIt;
recursive_directory_iterator it = createInterestingIterator(static_env);
const recursive_directory_iterator it_copy(it);
const path entry = *it;
recursive_directory_iterator it2 = createDifferentInterestingIterator(static_env);
const recursive_directory_iterator it2_copy(it2);
TEST_REQUIRE(it2 != it);
TEST_CHECK(it2.options() != it.options());
TEST_CHECK(it2.depth() != it.depth());
TEST_CHECK(it2.recursion_pending() != it.recursion_pending());
TEST_CHECK(*it2 != entry);
it2 = std::move(it);
TEST_REQUIRE(it2 != it2_copy && it2 != endIt);
TEST_CHECK(it2.options() == it_copy.options());
TEST_CHECK(it2.depth() == it_copy.depth());
TEST_CHECK(it2.recursion_pending() == it_copy.recursion_pending());
TEST_CHECK(*it2 == entry);
TEST_CHECK(it == endIt || it == it2);
}
TEST_CASE(test_returns_reference_to_self)
{
recursive_directory_iterator it;
recursive_directory_iterator it2;
recursive_directory_iterator& ref = (it2 = std::move(it));
TEST_CHECK(&ref == &it2);
}
TEST_CASE(test_self_move)
{
static_test_env static_env;
// Create two non-equal iterators that have exactly the same state.
recursive_directory_iterator it = createInterestingIterator(static_env);
recursive_directory_iterator it2 = createInterestingIterator(static_env);
TEST_CHECK(it != it2);
TEST_CHECK(it2.options() == it.options());
TEST_CHECK(it2.depth() == it.depth());
TEST_CHECK(it2.recursion_pending() == it.recursion_pending());
TEST_CHECK(*it2 == *it);
it = std::move(it);
TEST_CHECK(it2.options() == it.options());
TEST_CHECK(it2.depth() == it.depth());
TEST_CHECK(it2.recursion_pending() == it.recursion_pending());
TEST_CHECK(*it2 == *it);
}
TEST_SUITE_END()
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