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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <AK/TestSuite.h>
28
29#include <AK/NonnullRefPtr.h>
30#include <AK/String.h>
31
32struct Object : public RefCounted<Object> {
33 int x;
34};
35
36TEST_CASE(basics)
37{
38 auto object = adopt(*new Object);
39 EXPECT(object.ptr() != nullptr);
40 EXPECT_EQ(object->ref_count(), 1);
41 object->ref();
42 EXPECT_EQ(object->ref_count(), 2);
43 object->unref();
44 EXPECT_EQ(object->ref_count(), 1);
45
46 {
47 NonnullRefPtr another = object;
48 EXPECT_EQ(object->ref_count(), 2);
49 }
50
51 EXPECT_EQ(object->ref_count(), 1);
52}
53
54TEST_CASE(assign_reference)
55{
56 auto object = adopt(*new Object);
57 EXPECT_EQ(object->ref_count(), 1);
58 object = *object;
59 EXPECT_EQ(object->ref_count(), 1);
60}
61
62TEST_CASE(assign_owner_of_self)
63{
64 struct Object : public RefCounted<Object> {
65 RefPtr<Object> parent;
66 };
67
68 auto parent = adopt(*new Object);
69 auto child = adopt(*new Object);
70 child->parent = move(parent);
71
72 child = *child->parent;
73 EXPECT_EQ(child->ref_count(), 1);
74}
75
76TEST_CASE(swap_with_self)
77{
78 auto object = adopt(*new Object);
79 swap(object, object);
80 EXPECT_EQ(object->ref_count(), 1);
81}
82
83TEST_MAIN(String)