1 /* 2 * Copyright (C) 2020 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 package com.android.internal.os; 18 19 import static com.google.common.truth.Truth.assertThat; 20 21 import android.content.Context; 22 import android.os.BatteryStatsManager; 23 import android.os.BatteryUsageStats; 24 import android.os.UidBatteryConsumer; 25 import android.perftests.utils.BenchmarkState; 26 import android.perftests.utils.PerfStatusReporter; 27 28 import androidx.test.InstrumentationRegistry; 29 import androidx.test.filters.LargeTest; 30 import androidx.test.runner.AndroidJUnit4; 31 32 import org.junit.Rule; 33 import org.junit.Test; 34 import org.junit.runner.RunWith; 35 36 import java.util.List; 37 38 @RunWith(AndroidJUnit4.class) 39 @LargeTest 40 public class BatteryUsageStatsPerfTest { 41 42 @Rule 43 public final PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter(); 44 45 /** 46 * Measures the performance of {@link BatteryStatsManager#getBatteryUsageStats()}, 47 * which triggers a battery stats sync on every iteration. 48 */ 49 @Test testGetBatteryUsageStats()50 public void testGetBatteryUsageStats() { 51 final Context context = InstrumentationRegistry.getContext(); 52 final BatteryStatsManager batteryStatsManager = 53 context.getSystemService(BatteryStatsManager.class); 54 55 final BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); 56 while (state.keepRunning()) { 57 BatteryUsageStats batteryUsageStats = batteryStatsManager.getBatteryUsageStats(); 58 59 state.pauseTiming(); 60 61 List<UidBatteryConsumer> uidBatteryConsumers = 62 batteryUsageStats.getUidBatteryConsumers(); 63 double power = 0; 64 for (int i = 0; i < uidBatteryConsumers.size(); i++) { 65 UidBatteryConsumer uidBatteryConsumer = uidBatteryConsumers.get(i); 66 power += uidBatteryConsumer.getConsumedPower(); 67 } 68 69 assertThat(power).isGreaterThan(0.0); 70 71 state.resumeTiming(); 72 } 73 } 74 } 75