1 /*
2 * Copyright 2019 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 "os/handler.h"
18
19 #include <future>
20 #include <thread>
21
22 #include "common/bind.h"
23 #include "common/callback.h"
24 #include "gtest/gtest.h"
25 #include "os/log.h"
26
27 namespace bluetooth {
28 namespace os {
29 namespace {
30
31 class HandlerTest : public ::testing::Test {
32 protected:
SetUp()33 void SetUp() override {
34 thread_ = new Thread("test_thread", Thread::Priority::NORMAL);
35 handler_ = new Handler(thread_);
36 }
TearDown()37 void TearDown() override {
38 delete handler_;
39 delete thread_;
40 }
41
42 Handler* handler_;
43 Thread* thread_;
44 };
45
TEST_F(HandlerTest,empty)46 TEST_F(HandlerTest, empty) {
47 handler_->Clear();
48 }
49
TEST_F(HandlerTest,post_task_invoked)50 TEST_F(HandlerTest, post_task_invoked) {
51 int val = 0;
52 std::promise<void> closure_ran;
53 auto future = closure_ran.get_future();
54 common::OnceClosure closure = common::BindOnce(
55 [](int* val, std::promise<void> closure_ran) {
56 *val = *val + 1;
57 closure_ran.set_value();
58 },
59 common::Unretained(&val),
60 std::move(closure_ran));
61 handler_->Post(std::move(closure));
62 future.wait();
63 ASSERT_EQ(val, 1);
64 handler_->Clear();
65 }
66
TEST_F(HandlerTest,post_task_cleared)67 TEST_F(HandlerTest, post_task_cleared) {
68 int val = 0;
69 std::promise<void> closure_started;
70 auto closure_started_future = closure_started.get_future();
71 std::promise<void> closure_can_continue;
72 auto can_continue_future = closure_can_continue.get_future();
73 std::promise<void> closure_finished;
74 auto closure_finished_future = closure_finished.get_future();
75 handler_->Post(common::BindOnce(
76 [](int* val,
77 std::promise<void> closure_started,
78 std::future<void> can_continue_future,
79 std::promise<void> closure_finished) {
80 closure_started.set_value();
81 *val = *val + 1;
82 can_continue_future.wait();
83 closure_finished.set_value();
84 },
85 common::Unretained(&val),
86 std::move(closure_started),
87 std::move(can_continue_future),
88 std::move(closure_finished)));
89 handler_->Post(common::BindOnce([]() { ASSERT_TRUE(false); }));
90 closure_started_future.wait();
91 handler_->Clear();
92 closure_can_continue.set_value();
93 closure_finished_future.wait();
94 ASSERT_EQ(val, 1);
95 }
96
check_int(std::unique_ptr<int> number,std::shared_ptr<int> to_change)97 void check_int(std::unique_ptr<int> number, std::shared_ptr<int> to_change) {
98 *to_change = *number;
99 }
100
TEST_F(HandlerTest,once_callback)101 TEST_F(HandlerTest, once_callback) {
102 auto number = std::make_unique<int>(1);
103 auto to_change = std::make_shared<int>(0);
104 auto once_callback = common::BindOnce(&check_int, std::move(number), to_change);
105 std::move(once_callback).Run();
106 EXPECT_EQ(*to_change, 1);
107 handler_->Clear();
108 }
109
TEST_F(HandlerTest,callback_with_promise)110 TEST_F(HandlerTest, callback_with_promise) {
111 std::promise<void> promise;
112 auto future = promise.get_future();
113 auto once_callback = common::BindOnce(&std::promise<void>::set_value, common::Unretained(&promise));
114 std::move(once_callback).Run();
115 future.wait();
116 handler_->Clear();
117 }
118
119 // For Death tests, all the threading needs to be done in the ASSERT_DEATH call
120 class HandlerDeathTest : public ::testing::Test {
121 protected:
ThreadSetUp()122 void ThreadSetUp() {
123 thread_ = new Thread("test_thread", Thread::Priority::NORMAL);
124 handler_ = new Handler(thread_);
125 }
126
ThreadTearDown()127 void ThreadTearDown() {
128 delete handler_;
129 delete thread_;
130 }
131
ClearTwice()132 void ClearTwice() {
133 ThreadSetUp();
134 handler_->Clear();
135 handler_->Clear();
136 ThreadTearDown();
137 }
138
NotCleared()139 void NotCleared() {
140 ThreadSetUp();
141 ThreadTearDown();
142 }
143
144 Handler* handler_;
145 Thread* thread_;
146 };
147
TEST_F(HandlerDeathTest,clear_after_handler_cleared)148 TEST_F(HandlerDeathTest, clear_after_handler_cleared) {
149 ASSERT_DEATH(ClearTwice(), "Handlers must only be cleared once");
150 }
151
TEST_F(HandlerDeathTest,not_cleared_before_destruction)152 TEST_F(HandlerDeathTest, not_cleared_before_destruction) {
153 ASSERT_DEATH(NotCleared(), "Handlers must be cleared");
154 }
155
156 } // namespace
157 } // namespace os
158 } // namespace bluetooth
159