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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "VibratorHalWrapperAidlTest"
#include <android-base/thread_annotations.h>
#include <android/hardware/vibrator/IVibrator.h>
#include <condition_variable>
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <utils/Log.h>
#include <thread>
#include <vibratorservice/VibratorCallbackScheduler.h>
using std::chrono::milliseconds;
using std::chrono::steady_clock;
using std::chrono::time_point;
using namespace android;
using namespace std::chrono_literals;
using namespace testing;
// -------------------------------------------------------------------------------------------------
class VibratorCallbackSchedulerTest : public Test {
public:
void SetUp() override {
mScheduler = std::make_unique<vibrator::CallbackScheduler>();
std::lock_guard<std::mutex> lock(mMutex);
mExpiredCallbacks.clear();
}
protected:
std::mutex mMutex;
std::condition_variable_any mCondition;
std::unique_ptr<vibrator::CallbackScheduler> mScheduler = nullptr;
std::vector<int32_t> mExpiredCallbacks GUARDED_BY(mMutex);
std::function<void()> createCallback(int32_t id) {
return [=]() {
{
std::lock_guard<std::mutex> lock(mMutex);
mExpiredCallbacks.push_back(id);
}
mCondition.notify_all();
};
}
std::vector<int32_t> getExpiredCallbacks() {
std::lock_guard<std::mutex> lock(mMutex);
return std::vector<int32_t>(mExpiredCallbacks);
}
bool waitForCallbacks(uint32_t callbackCount, milliseconds timeout) {
time_point<steady_clock> expiration = steady_clock::now() + timeout;
while (steady_clock::now() < expiration) {
std::lock_guard<std::mutex> lock(mMutex);
if (callbackCount <= mExpiredCallbacks.size()) {
return true;
}
mCondition.wait_until(mMutex, expiration);
}
return false;
}
};
// -------------------------------------------------------------------------------------------------
TEST_F(VibratorCallbackSchedulerTest, TestScheduleRunsOnlyAfterDelay) {
mScheduler->schedule(createCallback(1), 15ms);
// Not triggered before delay.
ASSERT_FALSE(waitForCallbacks(1, 10ms));
ASSERT_TRUE(getExpiredCallbacks().empty());
ASSERT_TRUE(waitForCallbacks(1, 10ms));
ASSERT_THAT(getExpiredCallbacks(), ElementsAre(1));
}
TEST_F(VibratorCallbackSchedulerTest, TestScheduleMultipleCallbacksRunsInDelayOrder) {
mScheduler->schedule(createCallback(1), 10ms);
mScheduler->schedule(createCallback(2), 5ms);
mScheduler->schedule(createCallback(3), 1ms);
ASSERT_TRUE(waitForCallbacks(3, 15ms));
ASSERT_THAT(getExpiredCallbacks(), ElementsAre(3, 2, 1));
}
TEST_F(VibratorCallbackSchedulerTest, TestScheduleInParallelRunsInDelayOrder) {
std::vector<std::thread> threads;
for (int i = 0; i < 5; i++) {
threads.push_back(std::thread(
[=]() { mScheduler->schedule(createCallback(i), milliseconds(10 + 2 * i)); }));
}
std::for_each(threads.begin(), threads.end(), [](std::thread& t) { t.join(); });
ASSERT_TRUE(waitForCallbacks(5, 25ms));
ASSERT_THAT(getExpiredCallbacks(), ElementsAre(0, 1, 2, 3, 4));
}
TEST_F(VibratorCallbackSchedulerTest, TestDestructorDropsPendingCallbacksAndKillsThread) {
mScheduler->schedule(createCallback(1), 5ms);
mScheduler.reset(nullptr);
// Should time out waiting for callback to run.
ASSERT_FALSE(waitForCallbacks(1, 10ms));
ASSERT_TRUE(getExpiredCallbacks().empty());
}
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