1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "perfetto/base/weak_ptr.h"
18
19 #include "gtest/gtest.h"
20
21 namespace perfetto {
22 namespace base {
23 namespace {
24
25 class WeakClass {
26 public:
WeakClass()27 WeakClass() : weak_factory(this) {}
28 WeakPtrFactory<WeakClass> weak_factory;
29 };
30
TEST(WeakPtrTest,AllCases)31 TEST(WeakPtrTest, AllCases) {
32 std::unique_ptr<WeakClass> owned_instance(new WeakClass());
33 WeakPtr<WeakClass> weak_ptr1 = owned_instance->weak_factory.GetWeakPtr();
34 WeakPtr<WeakClass> weak_ptr2;
35 weak_ptr2 = owned_instance->weak_factory.GetWeakPtr();
36 WeakPtr<WeakClass> weak_ptr_copied(weak_ptr2);
37 WeakPtr<WeakClass> weak_ptr_copied2 = weak_ptr_copied; // NOLINT
38
39 ASSERT_TRUE(weak_ptr1);
40 ASSERT_TRUE(weak_ptr2);
41 ASSERT_TRUE(weak_ptr_copied);
42 ASSERT_TRUE(weak_ptr_copied2);
43
44 ASSERT_EQ(owned_instance.get(), weak_ptr1.get());
45 ASSERT_EQ(owned_instance.get(), weak_ptr2.get());
46 ASSERT_EQ(owned_instance.get(), weak_ptr_copied.get());
47 ASSERT_EQ(owned_instance.get(), weak_ptr_copied2.get());
48
49 WeakPtr<WeakClass> weak_ptr_moved1(std::move(weak_ptr1));
50 WeakPtr<WeakClass> weak_ptr_moved2(weak_ptr_copied2);
51 weak_ptr_moved2 = std::move(weak_ptr2);
52 ASSERT_FALSE(weak_ptr1);
53 ASSERT_FALSE(weak_ptr2);
54 ASSERT_TRUE(weak_ptr_moved1);
55 ASSERT_TRUE(weak_ptr_moved2);
56 ASSERT_TRUE(weak_ptr_copied2);
57 ASSERT_EQ(owned_instance.get(), weak_ptr_moved1.get());
58 ASSERT_EQ(owned_instance.get(), weak_ptr_moved2.get());
59
60 owned_instance.reset();
61
62 ASSERT_FALSE(weak_ptr1);
63 ASSERT_FALSE(weak_ptr2);
64 ASSERT_FALSE(weak_ptr_copied);
65 ASSERT_FALSE(weak_ptr_copied2);
66 ASSERT_FALSE(weak_ptr_moved1);
67 ASSERT_FALSE(weak_ptr_moved2);
68 }
69
70 } // namespace
71 } // namespace base
72 } // namespace perfetto
73