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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.
*/
package com.android.internal.os;
import static com.google.common.truth.Truth.assertThat;
import android.content.Context;
import android.os.BatteryStats;
import android.os.Bundle;
import android.os.UserHandle;
import android.perftests.utils.BenchmarkState;
import android.perftests.utils.PerfStatusReporter;
import androidx.test.InstrumentationRegistry;
import androidx.test.filters.LargeTest;
import androidx.test.runner.AndroidJUnit4;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.util.List;
@RunWith(AndroidJUnit4.class)
@LargeTest
public class BatteryStatsHelperPerfTest {
@Rule
public final PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();
/**
* Measures the performance of {@link BatteryStatsHelper#getStats()}, which triggers
* a battery stats sync on every iteration.
*/
@Test
public void testGetStats_forceUpdate() {
final Context context = InstrumentationRegistry.getContext();
final BatteryStatsHelper statsHelper = new BatteryStatsHelper(context,
true /* collectBatteryBroadcast */);
statsHelper.create((Bundle) null);
statsHelper.refreshStats(BatteryStats.STATS_SINCE_CHARGED, UserHandle.myUserId());
final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
while (state.keepRunning()) {
state.pauseTiming();
statsHelper.clearStats();
state.resumeTiming();
statsHelper.getStats();
assertThat(statsHelper.getUsageList()).isNotEmpty();
}
}
/**
* Measures performance of the {@link BatteryStatsHelper#getStats(boolean)}, which does
* not trigger a sync and just returns current values.
*/
@Test
public void testGetStats_cached() {
final Context context = InstrumentationRegistry.getContext();
final BatteryStatsHelper statsHelper = new BatteryStatsHelper(context,
true /* collectBatteryBroadcast */);
statsHelper.create((Bundle) null);
statsHelper.refreshStats(BatteryStats.STATS_SINCE_CHARGED, UserHandle.myUserId());
final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
while (state.keepRunning()) {
state.pauseTiming();
statsHelper.clearStats();
state.resumeTiming();
statsHelper.getStats(false /* forceUpdate */);
assertThat(statsHelper.getUsageList()).isNotEmpty();
}
}
@Test
public void testPowerCalculation() {
final Context context = InstrumentationRegistry.getContext();
final BatteryStatsHelper statsHelper = new BatteryStatsHelper(context,
true /* collectBatteryBroadcast */);
statsHelper.create((Bundle) null);
statsHelper.getStats();
final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
while (state.keepRunning()) {
// This will use the cached BatteryStatsObject
statsHelper.refreshStats(BatteryStats.STATS_SINCE_CHARGED, UserHandle.myUserId());
assertThat(statsHelper.getUsageList()).isNotEmpty();
}
}
@Test
public void testEndToEnd() {
final Context context = InstrumentationRegistry.getContext();
final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
while (state.keepRunning()) {
final BatteryStatsHelper statsHelper = new BatteryStatsHelper(context,
true /* collectBatteryBroadcast */);
statsHelper.create((Bundle) null);
statsHelper.clearStats();
statsHelper.refreshStats(BatteryStats.STATS_SINCE_CHARGED, UserHandle.myUserId());
state.pauseTiming();
List<BatterySipper> usageList = statsHelper.getUsageList();
double power = 0;
for (int i = 0; i < usageList.size(); i++) {
BatterySipper sipper = usageList.get(i);
power += sipper.sumPower();
}
assertThat(power).isGreaterThan(0.0);
state.resumeTiming();
}
}
}
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