mirror of
https://github.com/LadybirdBrowser/ladybird.git
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f820917a76
This commit converts naked `new`s to `AK::try_make` and `AK::try_create` wherever possible. If the called constructor is private, this can not be done, so we instead now use the standard-defined and compiler-agnostic `new (nothrow)`.
160 lines
4 KiB
C++
160 lines
4 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibTest/TestCase.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/String.h>
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struct Object : public RefCounted<Object> {
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int x;
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};
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struct Object2 : Object {
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};
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struct SelfAwareObject : public RefCounted<SelfAwareObject> {
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void one_ref_left() { m_has_one_ref_left = true; }
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void will_be_destroyed() { ++num_destroyed; }
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bool m_has_one_ref_left = false;
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static size_t num_destroyed;
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};
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size_t SelfAwareObject::num_destroyed = 0;
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TEST_CASE(basics)
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{
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RefPtr<Object> object = adopt_ref(*new Object);
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EXPECT(object.ptr() != nullptr);
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EXPECT_EQ(object->ref_count(), 1u);
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object->ref();
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EXPECT_EQ(object->ref_count(), 2u);
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object->unref();
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EXPECT_EQ(object->ref_count(), 1u);
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{
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NonnullRefPtr another = *object;
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EXPECT_EQ(object->ref_count(), 2u);
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}
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EXPECT_EQ(object->ref_count(), 1u);
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}
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TEST_CASE(assign_reference)
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{
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RefPtr<Object> object = adopt_ref(*new Object);
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EXPECT_EQ(object->ref_count(), 1u);
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object = *object;
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EXPECT_EQ(object->ref_count(), 1u);
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}
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TEST_CASE(assign_ptr)
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{
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RefPtr<Object> object = adopt_ref(*new Object);
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EXPECT_EQ(object->ref_count(), 1u);
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object = object.ptr();
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EXPECT_EQ(object->ref_count(), 1u);
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}
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TEST_CASE(copy_move_ref)
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{
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RefPtr<Object2> object = adopt_ref(*new Object2);
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EXPECT_EQ(object->ref_count(), 1u);
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{
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auto object2 = object;
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EXPECT_EQ(object->ref_count(), 2u);
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RefPtr<Object> object1 = object;
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EXPECT_EQ(object->ref_count(), 3u);
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object1 = move(object2);
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EXPECT_EQ(object->ref_count(), 2u);
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RefPtr<Object> object3(move(object1));
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EXPECT_EQ(object3->ref_count(), 2u);
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object1 = object3;
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EXPECT_EQ(object3->ref_count(), 3u);
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}
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EXPECT_EQ(object->ref_count(), 1u);
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}
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TEST_CASE(swap)
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{
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RefPtr<Object> object_a = adopt_ref(*new Object);
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RefPtr<Object> object_b = adopt_ref(*new Object);
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auto* ptr_a = object_a.ptr();
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auto* ptr_b = object_b.ptr();
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swap(object_a, object_b);
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EXPECT_EQ(object_a, ptr_b);
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EXPECT_EQ(object_b, ptr_a);
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EXPECT_EQ(object_a->ref_count(), 1u);
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EXPECT_EQ(object_b->ref_count(), 1u);
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}
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TEST_CASE(assign_moved_self)
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{
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RefPtr<Object> object = adopt_ref(*new Object);
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EXPECT_EQ(object->ref_count(), 1u);
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#ifdef __clang__
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# pragma clang diagnostic push
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# pragma clang diagnostic ignored "-Wself-move"
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#endif
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object = move(object);
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#ifdef __clang__
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# pragma clang diagnostic pop
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#endif
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EXPECT_EQ(object->ref_count(), 1u);
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}
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TEST_CASE(assign_copy_self)
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{
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RefPtr<Object> object = adopt_ref(*new Object);
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EXPECT_EQ(object->ref_count(), 1u);
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#ifdef __clang__
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# pragma clang diagnostic push
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# pragma clang diagnostic ignored "-Wself-assign-overloaded"
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#endif
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object = object;
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#ifdef __clang__
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# pragma clang diagnostic pop
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#endif
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EXPECT_EQ(object->ref_count(), 1u);
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}
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TEST_CASE(self_observers)
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{
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{
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RefPtr<SelfAwareObject> object = adopt_ref(*new SelfAwareObject);
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EXPECT_EQ(object->ref_count(), 1u);
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EXPECT_EQ(object->m_has_one_ref_left, false);
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EXPECT_EQ(SelfAwareObject::num_destroyed, 0u);
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object->ref();
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EXPECT_EQ(object->ref_count(), 2u);
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EXPECT_EQ(object->m_has_one_ref_left, false);
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EXPECT_EQ(SelfAwareObject::num_destroyed, 0u);
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object->unref();
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EXPECT_EQ(object->ref_count(), 1u);
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EXPECT_EQ(object->m_has_one_ref_left, true);
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EXPECT_EQ(SelfAwareObject::num_destroyed, 0u);
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}
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EXPECT_EQ(SelfAwareObject::num_destroyed, 1u);
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}
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TEST_CASE(adopt_ref_if_nonnull)
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{
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RefPtr<SelfAwareObject> object = adopt_ref_if_nonnull(new (nothrow) SelfAwareObject);
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EXPECT_EQ(object.is_null(), false);
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EXPECT_EQ(object->ref_count(), 1u);
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SelfAwareObject* null_object = nullptr;
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RefPtr<SelfAwareObject> failed_allocation = adopt_ref_if_nonnull(null_object);
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EXPECT_EQ(failed_allocation.is_null(), true);
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}
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