1/*
2 * Copyright (C) 2018 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#undef LOG_TAG
18#define LOG_TAG "LibSurfaceFlingerUnittests"
19
20#include <gmock/gmock.h>
21#include <gtest/gtest.h>
22
23#include <log/log.h>
24
25#include "AsyncCallRecorder.h"
26#include "EventControlThread.h"
27
28namespace android {
29namespace {
30
31using namespace std::chrono_literals;
32using testing::_;
33
34class EventControlThreadTest : public testing::Test {
35protected:
36    EventControlThreadTest();
37    ~EventControlThreadTest() override;
38
39    void createThread();
40
41    void expectVSyncEnableCallbackCalled(bool enable);
42
43    AsyncCallRecorder<void (*)(bool)> mVSyncSetEnabledCallRecorder;
44
45    std::unique_ptr<EventControlThread> mThread;
46};
47
48EventControlThreadTest::EventControlThreadTest() {
49    const ::testing::TestInfo* const test_info =
50            ::testing::UnitTest::GetInstance()->current_test_info();
51    ALOGD("**** Setting up for %s.%s\n", test_info->test_case_name(), test_info->name());
52}
53
54EventControlThreadTest::~EventControlThreadTest() {
55    const ::testing::TestInfo* const test_info =
56            ::testing::UnitTest::GetInstance()->current_test_info();
57    ALOGD("**** Tearing down after %s.%s\n", test_info->test_case_name(), test_info->name());
58}
59
60void EventControlThreadTest::createThread() {
61    mThread = std::make_unique<android::impl::EventControlThread>(
62            mVSyncSetEnabledCallRecorder.getInvocable());
63}
64
65void EventControlThreadTest::expectVSyncEnableCallbackCalled(bool expectedEnabled) {
66    auto args = mVSyncSetEnabledCallRecorder.waitForCall();
67    ASSERT_TRUE(args.has_value());
68    EXPECT_EQ(std::get<0>(args.value()), expectedEnabled);
69}
70
71/* ------------------------------------------------------------------------
72 * Test cases
73 */
74
75TEST_F(EventControlThreadTest, signalsVSyncDisabledOnStartup) {
76    createThread();
77
78    // On thread start, there should be an automatic explicit call to disable
79    // vsyncs
80    expectVSyncEnableCallbackCalled(false);
81}
82
83TEST_F(EventControlThreadTest, signalsVSyncDisabledOnce) {
84    createThread();
85    expectVSyncEnableCallbackCalled(false);
86
87    mThread->setVsyncEnabled(false);
88
89    EXPECT_FALSE(mVSyncSetEnabledCallRecorder.waitForUnexpectedCall().has_value());
90}
91
92TEST_F(EventControlThreadTest, signalsVSyncEnabledThenDisabled) {
93    createThread();
94    expectVSyncEnableCallbackCalled(false);
95
96    mThread->setVsyncEnabled(true);
97
98    expectVSyncEnableCallbackCalled(true);
99
100    mThread->setVsyncEnabled(false);
101
102    expectVSyncEnableCallbackCalled(false);
103}
104
105TEST_F(EventControlThreadTest, signalsVSyncEnabledOnce) {
106    createThread();
107    expectVSyncEnableCallbackCalled(false);
108
109    mThread->setVsyncEnabled(true);
110
111    expectVSyncEnableCallbackCalled(true);
112
113    mThread->setVsyncEnabled(true);
114
115    EXPECT_FALSE(mVSyncSetEnabledCallRecorder.waitForUnexpectedCall().has_value());
116}
117
118} // namespace
119} // namespace android
120