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/*
* Copyright (c) 2021, Brian Gianforcaro <bgianf@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTest/TestCase.h>
#include <AK/IntrusiveList.h>
#include <AK/NonnullOwnPtr.h>
#include <AK/RefPtr.h>
class IntrusiveTestItem {
public:
IntrusiveTestItem() = default;
IntrusiveListNode<IntrusiveTestItem> m_list_node;
};
using IntrusiveTestList = IntrusiveList<IntrusiveTestItem, RawPtr<IntrusiveTestItem>, &IntrusiveTestItem::m_list_node>;
TEST_CASE(construct)
{
IntrusiveTestList empty;
EXPECT(empty.is_empty());
}
TEST_CASE(insert)
{
IntrusiveTestList list;
list.append(*new IntrusiveTestItem());
EXPECT(!list.is_empty());
delete list.take_last();
}
TEST_CASE(insert_before)
{
IntrusiveTestList list;
auto two = new IntrusiveTestItem();
list.append(*two);
auto zero = new IntrusiveTestItem();
list.append(*zero);
auto one = new IntrusiveTestItem();
list.insert_before(*zero, *one);
EXPECT_EQ(list.first(), two);
EXPECT_EQ(list.last(), zero);
EXPECT(list.contains(*zero));
EXPECT(list.contains(*one));
EXPECT(list.contains(*two));
EXPECT(zero->m_list_node.is_in_list());
EXPECT(one->m_list_node.is_in_list());
EXPECT(two->m_list_node.is_in_list());
EXPECT_EQ(list.size_slow(), 3u);
while (auto elem = list.take_first()) {
delete elem;
}
}
TEST_CASE(enumeration)
{
constexpr size_t expected_size = 10;
IntrusiveTestList list;
for (size_t i = 0; i < expected_size; i++) {
list.append(*new IntrusiveTestItem());
}
size_t actual_size = 0;
for (auto& elem : list) {
(void)elem;
actual_size++;
}
EXPECT_EQ(expected_size, actual_size);
EXPECT_EQ(expected_size, list.size_slow());
size_t reverse_actual_size = 0;
for (auto it = list.rbegin(); it != list.rend(); ++it) {
reverse_actual_size++;
}
EXPECT_EQ(expected_size, reverse_actual_size);
while (auto elem = list.take_first()) {
delete elem;
}
}
class IntrusiveRefPtrItem : public RefCounted<IntrusiveRefPtrItem> {
public:
IntrusiveRefPtrItem() = default;
IntrusiveListNode<IntrusiveRefPtrItem, RefPtr<IntrusiveRefPtrItem>> m_list_node;
};
using IntrusiveRefPtrList = IntrusiveList<IntrusiveRefPtrItem, RefPtr<IntrusiveRefPtrItem>, &IntrusiveRefPtrItem::m_list_node>;
TEST_CASE(intrusive_ref_ptr_no_ref_leaks)
{
auto item = adopt_ref(*new IntrusiveRefPtrItem());
EXPECT_EQ(1u, item->ref_count());
IntrusiveRefPtrList ref_list;
ref_list.append(*item);
EXPECT_EQ(2u, item->ref_count());
ref_list.remove(*item);
EXPECT_EQ(1u, item->ref_count());
}
TEST_CASE(intrusive_ref_ptr_clear)
{
auto item = adopt_ref(*new IntrusiveRefPtrItem());
EXPECT_EQ(1u, item->ref_count());
IntrusiveRefPtrList ref_list;
ref_list.append(*item);
EXPECT_EQ(2u, item->ref_count());
ref_list.clear();
EXPECT_EQ(1u, item->ref_count());
}
TEST_CASE(intrusive_ref_ptr_destructor)
{
auto item = adopt_ref(*new IntrusiveRefPtrItem());
EXPECT_EQ(1u, item->ref_count());
{
IntrusiveRefPtrList ref_list;
ref_list.append(*item);
EXPECT_EQ(2u, item->ref_count());
}
EXPECT_EQ(1u, item->ref_count());
}
class IntrusiveNonnullRefPtrItem : public RefCounted<IntrusiveNonnullRefPtrItem> {
public:
IntrusiveNonnullRefPtrItem() = default;
IntrusiveListNode<IntrusiveNonnullRefPtrItem, NonnullRefPtr<IntrusiveNonnullRefPtrItem>> m_list_node;
};
using IntrusiveNonnullRefPtrList = IntrusiveList<IntrusiveNonnullRefPtrItem, NonnullRefPtr<IntrusiveNonnullRefPtrItem>, &IntrusiveNonnullRefPtrItem::m_list_node>;
TEST_CASE(intrusive_nonnull_ref_ptr_intrusive)
{
auto item = adopt_ref(*new IntrusiveNonnullRefPtrItem());
EXPECT_EQ(1u, item->ref_count());
IntrusiveNonnullRefPtrList nonnull_ref_list;
nonnull_ref_list.append(*item);
EXPECT_EQ(2u, item->ref_count());
EXPECT(!nonnull_ref_list.is_empty());
nonnull_ref_list.remove(*item);
EXPECT_EQ(1u, item->ref_count());
EXPECT(nonnull_ref_list.is_empty());
}
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