Move battery usage files to a separate folder.

Bug: 202118250
Test: presubmit
Change-Id: I21aa58ebc02327849ed2161dbbafcdc806c007f2

AndroidManifest.xml

@@ -2846,7 +2846,7 @@
                 <category android:name="com.android.settings.SHORTCUT" />
             </intent-filter>
             <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
-                android:value="com.android.settings.fuelgauge.PowerUsageSummary" />
+                android:value="com.android.settings.fuelgauge.batteryusage.PowerUsageSummary" />
             <meta-data android:name="com.android.settings.HIGHLIGHT_MENU_KEY"
                        android:value="@string/menu_key_battery"/>
         </activity>

res/layout/battery_chart_graph.xml

@@ -31,7 +31,7 @@
         android:textColor="?android:attr/textColorSecondary"
         android:text="@string/battery_usage_chart_graph_hint" />
 
-    <com.android.settings.fuelgauge.BatteryChartView
+    <com.android.settings.fuelgauge.batteryusage.BatteryChartView
         android:id="@+id/battery_chart"
         android:layout_width="match_parent"
         android:layout_height="170dp"

res/xml/power_usage_advanced.xml

@@ -21,7 +21,7 @@
     android:title="@string/advanced_battery_title"
     settings:keywords="@string/keywords_battery_usage">
 
-    <com.android.settings.fuelgauge.BatteryHistoryPreference
+    <com.android.settings.fuelgauge.batteryusage.BatteryHistoryPreference
         android:key="battery_graph"/>
 
     <PreferenceCategory

res/xml/power_usage_summary.xml

@@ -39,7 +39,7 @@
         settings:controller="com.android.settings.fuelgauge.batterytip.BatteryTipPreferenceController" />
 
     <Preference
-        android:fragment="com.android.settings.fuelgauge.PowerUsageAdvanced"
+        android:fragment="com.android.settings.fuelgauge.batteryusage.PowerUsageAdvanced"
         android:key="battery_usage_summary"
         android:title="@string/advanced_battery_preference_title"
         settings:keywords="@string/keywords_battery_usage" />

res/xml/top_level_settings.xml

@@ -59,7 +59,7 @@
         settings:highlightableMenuKey="@string/menu_key_notifications"/>
 
     <com.android.settings.widget.HomepagePreference
-        android:fragment="com.android.settings.fuelgauge.PowerUsageSummary"
+        android:fragment="com.android.settings.fuelgauge.batteryusage.PowerUsageSummary"
         android:icon="@drawable/ic_settings_battery_white"
         android:key="top_level_battery"
         android:order="-110"

src/com/android/settings/applications/appinfo/AppBatteryPreferenceController.java

@@ -38,12 +38,12 @@ import com.android.settings.R;
 import com.android.settings.Utils;
 import com.android.settings.core.BasePreferenceController;
 import com.android.settings.fuelgauge.AdvancedPowerUsageDetail;
-import com.android.settings.fuelgauge.BatteryChartPreferenceController;
-import com.android.settings.fuelgauge.BatteryDiffEntry;
-import com.android.settings.fuelgauge.BatteryEntry;
-import com.android.settings.fuelgauge.BatteryUsageStatsLoader;
 import com.android.settings.fuelgauge.BatteryUtils;
 import com.android.settings.fuelgauge.PowerUsageFeatureProvider;
+import com.android.settings.fuelgauge.batteryusage.BatteryChartPreferenceController;
+import com.android.settings.fuelgauge.batteryusage.BatteryDiffEntry;
+import com.android.settings.fuelgauge.batteryusage.BatteryEntry;
+import com.android.settings.fuelgauge.batteryusage.BatteryUsageStatsLoader;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settingslib.applications.AppUtils;
 import com.android.settingslib.core.lifecycle.Lifecycle;

src/com/android/settings/core/gateway/SettingsGateway.java

@@ -99,9 +99,9 @@ import com.android.settings.display.darkmode.DarkModeSettingsFragment;
 import com.android.settings.dream.DreamSettings;
 import com.android.settings.enterprise.EnterprisePrivacySettings;
 import com.android.settings.fuelgauge.AdvancedPowerUsageDetail;
-import com.android.settings.fuelgauge.PowerUsageSummary;
 import com.android.settings.fuelgauge.batterysaver.BatterySaverScheduleSettings;
 import com.android.settings.fuelgauge.batterysaver.BatterySaverSettings;
+import com.android.settings.fuelgauge.batteryusage.PowerUsageSummary;
 import com.android.settings.gestures.AssistGestureSettings;
 import com.android.settings.gestures.ButtonNavigationSettingsFragment;
 import com.android.settings.gestures.DoubleTapPowerSettings;

src/com/android/settings/dashboard/DashboardFragmentRegistry.java

@@ -31,9 +31,9 @@ import com.android.settings.deviceinfo.aboutphone.MyDeviceInfoFragment;
 import com.android.settings.display.NightDisplaySettings;
 import com.android.settings.emergency.EmergencyDashboardFragment;
 import com.android.settings.enterprise.EnterprisePrivacySettings;
-import com.android.settings.fuelgauge.PowerUsageSummary;
 import com.android.settings.fuelgauge.SmartBatterySettings;
 import com.android.settings.fuelgauge.batterysaver.BatterySaverSettings;
+import com.android.settings.fuelgauge.batteryusage.PowerUsageSummary;
 import com.android.settings.gestures.GestureSettings;
 import com.android.settings.homepage.TopLevelSettings;
 import com.android.settings.language.LanguageAndInputSettings;

src/com/android/settings/fuelgauge/AdvancedPowerUsageDetail.java

@@ -45,6 +45,9 @@ import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.fuelgauge.batterytip.BatteryTipPreferenceController;
 import com.android.settings.fuelgauge.batterytip.tips.BatteryTip;
 import com.android.settings.overlay.FeatureFactory;
+import com.android.settings.fuelgauge.batteryusage.BatteryDiffEntry;
+import com.android.settings.fuelgauge.batteryusage.BatteryEntry;
+import com.android.settings.fuelgauge.batteryusage.BatteryHistEntry;
 import com.android.settings.widget.EntityHeaderController;
 import com.android.settingslib.HelpUtils;
 import com.android.settingslib.applications.AppUtils;

src/com/android/settings/fuelgauge/BatteryUtils.java

@@ -190,7 +190,7 @@ public class BatteryUtils {
      * Returns true if the specified battery consumer should be excluded from
      * battery consumption lists, either short or full.
      */
-    boolean shouldHideUidBatteryConsumerUnconditionally(UidBatteryConsumer consumer,
+    public boolean shouldHideUidBatteryConsumerUnconditionally(UidBatteryConsumer consumer,
             String[] packages) {
         final int uid = consumer.getUid();
         return uid == UID_TETHERING

src/com/android/settings/fuelgauge/PowerUsageFeatureProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -21,6 +21,7 @@ import android.content.Intent;
 import android.net.Uri;
 import android.util.SparseIntArray;
 
+import com.android.settings.fuelgauge.batteryusage.BatteryHistEntry;
 import com.android.settingslib.fuelgauge.Estimate;
 
 import java.util.Map;
@@ -73,6 +74,7 @@ public interface PowerUsageFeatureProvider {
 
     /**
      * Returns an improved projection curve for future battery level.
+     *
      * @param zeroTime timestamps (array keys) are shifted by this amount
      */
     SparseIntArray getEnhancedBatteryPredictionCurve(Context context, long zeroTime);
@@ -84,21 +86,20 @@ public interface PowerUsageFeatureProvider {
 
     /**
      * Checks whether debugging should be enabled for battery estimates.
-     * @return
      */
     boolean isEstimateDebugEnabled();
 
     /**
      * Converts the provided string containing the remaining time into a debug string for enhanced
      * estimates.
-     * @param timeRemaining
+     *
      * @return A string containing the estimate and a label indicating it is an enhanced estimate
      */
     String getEnhancedEstimateDebugString(String timeRemaining);
 
     /**
      * Converts the provided string containing the remaining time into a debug string.
-     * @param timeRemaining
+     *
      * @return A string containing the estimate and a label indicating it is a normal estimate
      */
     String getOldEstimateDebugString(String timeRemaining);
@@ -114,7 +115,7 @@ public interface PowerUsageFeatureProvider {
      * to their next charging time.
      *
      * @param id Optional string used to identify the caller for metrics. Usually the class name of
-     * the caller
+     *           the caller
      */
     boolean getEarlyWarningSignal(Context context, String id);
 

src/com/android/settings/fuelgauge/PowerUsageFeatureProviderImpl.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -26,11 +26,13 @@ import android.util.SparseIntArray;
 
 import com.android.internal.util.ArrayUtils;
 import com.android.settings.R;
+import com.android.settings.fuelgauge.batteryusage.BatteryHistEntry;
 import com.android.settingslib.fuelgauge.Estimate;
 
 import java.util.Map;
 import java.util.Set;
 
+/** Implementation of {@code PowerUsageFeatureProvider} */
 public class PowerUsageFeatureProviderImpl implements PowerUsageFeatureProvider {
 
     private static final String PACKAGE_CALENDAR_PROVIDER = "com.android.providers.calendar";

src/com/android/settings/fuelgauge/batterytip/tips/UnrestrictAppTip.java

@@ -21,12 +21,13 @@ import android.os.Parcel;
 
 import androidx.annotation.VisibleForTesting;
 
+import com.android.settings.fuelgauge.AdvancedPowerUsageDetail;
 import com.android.settings.fuelgauge.batterytip.AppInfo;
 import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
 
 /**
  * Tip to suggest user to remove app restriction. This is the empty tip and it is only used in
- * {@link com.android.settings.fuelgauge.AdvancedPowerUsageDetail} to create dialog.
+ * {@link AdvancedPowerUsageDetail} to create dialog.
  */
 public class UnrestrictAppTip extends BatteryTip {
     private AppInfo mAppInfo;

src/com/android/settings/fuelgauge/batteryusage/BatteryAppListPreferenceController.java

@@ -1,5 +1,6 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * Copyright (C) 2022 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
@@ -11,11 +12,9 @@
  * 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.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import android.app.Activity;
 import android.content.Context;
@@ -35,8 +34,8 @@ import android.os.UserManager;
 import android.text.TextUtils;
 import android.text.format.DateUtils;
 import android.util.ArrayMap;
-import android.util.SparseArray;
 import android.util.Log;
+import android.util.SparseArray;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.preference.Preference;
@@ -48,6 +47,8 @@ import com.android.settings.R;
 import com.android.settings.SettingsActivity;
 import com.android.settings.core.InstrumentedPreferenceFragment;
 import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settings.fuelgauge.AdvancedPowerUsageDetail;
+import com.android.settings.fuelgauge.BatteryUtils;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settingslib.core.AbstractPreferenceController;
 import com.android.settingslib.core.lifecycle.Lifecycle;
@@ -72,6 +73,7 @@ public class BatteryAppListPreferenceController extends AbstractPreferenceContro
     private static final int MAX_ITEMS_TO_LIST = USE_FAKE_DATA ? 30 : 20;
     private static final int MIN_AVERAGE_POWER_THRESHOLD_MILLI_AMP = 10;
     private static final String MEDIASERVER_PACKAGE_NAME = "mediaserver";
+    private static final String NOT_AVAILABLE = "not_available";
 
     @VisibleForTesting
     PreferenceGroup mAppListGroup;
@@ -230,7 +232,7 @@ public class BatteryAppListPreferenceController extends AbstractPreferenceContro
         if (sConfig.shouldShowBatteryAttributionList(mContext)) {
             final int dischargePercentage = getDischargePercentage(batteryUsageStats);
             final List<BatteryEntry> usageList =
-                getCoalescedUsageList(showAllApps, /*loadDataInBackground=*/ true);
+                    getCoalescedUsageList(showAllApps, /*loadDataInBackground=*/ true);
             final double totalPower = batteryUsageStats.getConsumedPower();
             final int numSippers = usageList.size();
             for (int i = 0; i < numSippers; i++) {
@@ -292,7 +294,7 @@ public class BatteryAppListPreferenceController extends AbstractPreferenceContro
         }
         final int dischargePercentage = getDischargePercentage(batteryUsageStats);
         final List<BatteryEntry> usageList =
-            getCoalescedUsageList(showAllApps, /*loadDataInBackground=*/ false);
+                getCoalescedUsageList(showAllApps, /*loadDataInBackground=*/ false);
         final double totalPower = batteryUsageStats.getConsumedPower();
         for (int i = 0; i < usageList.size(); i++) {
             final BatteryEntry entry = usageList.get(i);
@@ -458,8 +460,8 @@ public class BatteryAppListPreferenceController extends AbstractPreferenceContro
 
     private void cacheRemoveAllPrefs(PreferenceGroup group) {
         mPreferenceCache = new ArrayMap<>();
-        final int N = group.getPreferenceCount();
+        final int n = group.getPreferenceCount();
-        for (int i = 0; i < N; i++) {
+        for (int i = 0; i < n; i++) {
             Preference p = group.getPreference(i);
             if (TextUtils.isEmpty(p.getKey())) {
                 continue;
@@ -563,7 +565,6 @@ public class BatteryAppListPreferenceController extends AbstractPreferenceContro
     }
 
     private void addNotAvailableMessage() {
-        final String NOT_AVAILABLE = "not_available";
         Preference notAvailable = getCachedPreference(NOT_AVAILABLE);
         if (notAvailable == null) {
             notAvailable = new Preference(mPrefContext);

src/com/android/settings/fuelgauge/batteryusage/BatteryChartPreferenceController.java

@@ -1,5 +1,6 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 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
@@ -11,10 +12,9 @@
  * 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.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import android.app.settings.SettingsEnums;
 import android.content.Context;
@@ -38,6 +38,8 @@ import com.android.settings.R;
 import com.android.settings.SettingsActivity;
 import com.android.settings.core.InstrumentedPreferenceFragment;
 import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settings.fuelgauge.AdvancedPowerUsageDetail;
+import com.android.settings.fuelgauge.BatteryUtils;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settingslib.core.AbstractPreferenceController;
 import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
@@ -60,8 +62,8 @@ import java.util.Map;
 /** Controls the update for chart graph and the list items. */
 public class BatteryChartPreferenceController extends AbstractPreferenceController
         implements PreferenceControllerMixin, LifecycleObserver, OnCreate, OnDestroy,
-                OnSaveInstanceState, BatteryChartView.OnSelectListener, OnResume,
+        OnSaveInstanceState, BatteryChartView.OnSelectListener, OnResume,
-                ExpandDividerPreference.OnExpandListener {
+        ExpandDividerPreference.OnExpandListener {
     private static final String TAG = "BatteryChartPreferenceController";
     private static final String KEY_FOOTER_PREF = "battery_graph_footer";
     private static final String PACKAGE_NAME_NONE = "none";
@@ -82,16 +84,25 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
     @VisibleForTesting
     Map<Integer, List<BatteryDiffEntry>> mBatteryIndexedMap;
 
-    @VisibleForTesting Context mPrefContext;
+    @VisibleForTesting
-    @VisibleForTesting BatteryUtils mBatteryUtils;
+    Context mPrefContext;
-    @VisibleForTesting PreferenceGroup mAppListPrefGroup;
+    @VisibleForTesting
-    @VisibleForTesting BatteryChartView mBatteryChartView;
+    BatteryUtils mBatteryUtils;
-    @VisibleForTesting ExpandDividerPreference mExpandDividerPreference;
+    @VisibleForTesting
+    PreferenceGroup mAppListPrefGroup;
+    @VisibleForTesting
+    BatteryChartView mBatteryChartView;
+    @VisibleForTesting
+    ExpandDividerPreference mExpandDividerPreference;
 
-    @VisibleForTesting boolean mIsExpanded = false;
+    @VisibleForTesting
-    @VisibleForTesting int[] mBatteryHistoryLevels;
+    boolean mIsExpanded = false;
-    @VisibleForTesting long[] mBatteryHistoryKeys;
+    @VisibleForTesting
-    @VisibleForTesting int mTrapezoidIndex = BatteryChartView.SELECTED_INDEX_INVALID;
+    int[] mBatteryHistoryLevels;
+    @VisibleForTesting
+    long[] mBatteryHistoryKeys;
+    @VisibleForTesting
+    int mTrapezoidIndex = BatteryChartView.SELECTED_INDEX_INVALID;
 
     private boolean mIs24HourFormat = false;
     private boolean mIsFooterPrefAdded = false;
@@ -122,15 +133,15 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
         mPreferenceKey = preferenceKey;
         mIs24HourFormat = DateFormat.is24HourFormat(context);
         mMetricsFeatureProvider =
-            FeatureFactory.getFactory(mContext).getMetricsFeatureProvider();
+                FeatureFactory.getFactory(mContext).getMetricsFeatureProvider();
         mNotAllowShowEntryPackages =
-            FeatureFactory.getFactory(context)
+                FeatureFactory.getFactory(context)
-                .getPowerUsageFeatureProvider(context)
+                        .getPowerUsageFeatureProvider(context)
-                .getHideApplicationEntries(context);
+                        .getHideApplicationEntries(context);
         mNotAllowShowSummaryPackages =
-            FeatureFactory.getFactory(context)
+                FeatureFactory.getFactory(context)
-                .getPowerUsageFeatureProvider(context)
+                        .getPowerUsageFeatureProvider(context)
-                .getHideApplicationSummary(context);
+                        .getHideApplicationSummary(context);
         if (lifecycle != null) {
             lifecycle.addObserver(this);
         }
@@ -142,18 +153,18 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
             return;
         }
         mTrapezoidIndex =
-            savedInstanceState.getInt(KEY_CURRENT_TIME_SLOT, mTrapezoidIndex);
+                savedInstanceState.getInt(KEY_CURRENT_TIME_SLOT, mTrapezoidIndex);
         mIsExpanded =
-            savedInstanceState.getBoolean(KEY_EXPAND_SYSTEM_INFO, mIsExpanded);
+                savedInstanceState.getBoolean(KEY_EXPAND_SYSTEM_INFO, mIsExpanded);
         Log.d(TAG, String.format("onCreate() slotIndex=%d isExpanded=%b",
-            mTrapezoidIndex, mIsExpanded));
+                mTrapezoidIndex, mIsExpanded));
     }
 
     @Override
     public void onResume() {
         final int currentUiMode =
-            mContext.getResources().getConfiguration().uiMode
+                mContext.getResources().getConfiguration().uiMode
-                & Configuration.UI_MODE_NIGHT_MASK;
+                        & Configuration.UI_MODE_NIGHT_MASK;
         if (sUiMode != currentUiMode) {
             sUiMode = currentUiMode;
             BatteryDiffEntry.clearCache();
@@ -171,7 +182,7 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
         savedInstance.putInt(KEY_CURRENT_TIME_SLOT, mTrapezoidIndex);
         savedInstance.putBoolean(KEY_EXPAND_SYSTEM_INFO, mIsExpanded);
         Log.d(TAG, String.format("onSaveInstanceState() slotIndex=%d isExpanded=%b",
-            mTrapezoidIndex, mIsExpanded));
+                mTrapezoidIndex, mIsExpanded));
     }
 
     @Override
@@ -194,7 +205,7 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
         mAppListPrefGroup = screen.findPreference(mPreferenceKey);
         mAppListPrefGroup.setOrderingAsAdded(false);
         mAppListPrefGroup.setTitle(
-            mPrefContext.getString(R.string.battery_app_usage_for_past_24));
+                mPrefContext.getString(R.string.battery_app_usage_for_past_24));
         mFooterPreference = screen.findPreference(KEY_FOOTER_PREF);
         // Removes footer first until usage data is loaded to avoid flashing.
         if (mFooterPreference != null) {
@@ -243,19 +254,19 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
         Log.d(TAG, "onChartSelect:" + trapezoidIndex);
         refreshUi(trapezoidIndex, /*isForce=*/ false);
         mMetricsFeatureProvider.action(
-            mPrefContext,
+                mPrefContext,
-            trapezoidIndex == BatteryChartView.SELECTED_INDEX_ALL
+                trapezoidIndex == BatteryChartView.SELECTED_INDEX_ALL
-                ? SettingsEnums.ACTION_BATTERY_USAGE_SHOW_ALL
+                        ? SettingsEnums.ACTION_BATTERY_USAGE_SHOW_ALL
-                : SettingsEnums.ACTION_BATTERY_USAGE_TIME_SLOT);
+                        : SettingsEnums.ACTION_BATTERY_USAGE_TIME_SLOT);
     }
 
     @Override
     public void onExpand(boolean isExpanded) {
         mIsExpanded = isExpanded;
         mMetricsFeatureProvider.action(
-            mPrefContext,
+                mPrefContext,
-            SettingsEnums.ACTION_BATTERY_USAGE_EXPAND_ITEM,
+                SettingsEnums.ACTION_BATTERY_USAGE_EXPAND_ITEM,
-            isExpanded);
+                isExpanded);
         refreshExpandUi();
     }
 
@@ -276,7 +287,7 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
             final Map<String, BatteryHistEntry> entryMap = batteryHistoryMap.get(timestamp);
             if (entryMap == null || entryMap.isEmpty()) {
                 Log.e(TAG, "abnormal entry list in the timestamp:"
-                    + ConvertUtils.utcToLocalTime(mPrefContext, timestamp));
+                        + ConvertUtils.utcToLocalTime(mPrefContext, timestamp));
                 continue;
             }
             // Averages the battery level in each time slot to avoid corner conditions.
@@ -285,15 +296,15 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
                 batteryLevelCounter += entry.mBatteryLevel;
             }
             mBatteryHistoryLevels[index] =
-                Math.round(batteryLevelCounter / entryMap.size());
+                    Math.round(batteryLevelCounter / entryMap.size());
         }
         forceRefreshUi();
         Log.d(TAG, String.format(
-            "setBatteryHistoryMap() size=%d key=%s\nlevels=%s",
+                "setBatteryHistoryMap() size=%d key=%s\nlevels=%s",
-            batteryHistoryMap.size(),
+                batteryHistoryMap.size(),
-            ConvertUtils.utcToLocalTime(mPrefContext,
+                ConvertUtils.utcToLocalTime(mPrefContext,
-                mBatteryHistoryKeys[mBatteryHistoryKeys.length - 1]),
+                        mBatteryHistoryKeys[mBatteryHistoryKeys.length - 1]),
-            Arrays.toString(mBatteryHistoryLevels)));
+                Arrays.toString(mBatteryHistoryLevels)));
 
         // Loads item icon and label in the background.
         new LoadAllItemsInfoTask(batteryHistoryMap).execute();
@@ -313,9 +324,9 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
 
     private void forceRefreshUi() {
         final int refreshIndex =
-            mTrapezoidIndex == BatteryChartView.SELECTED_INDEX_INVALID
+                mTrapezoidIndex == BatteryChartView.SELECTED_INDEX_INVALID
-                ? BatteryChartView.SELECTED_INDEX_ALL
+                        ? BatteryChartView.SELECTED_INDEX_ALL
-                : mTrapezoidIndex;
+                        : mTrapezoidIndex;
         if (mBatteryChartView != null) {
             mBatteryChartView.setLevels(mBatteryHistoryLevels);
             mBatteryChartView.setSelectedIndex(refreshIndex);
@@ -333,7 +344,7 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
             return false;
         }
         Log.d(TAG, String.format("refreshUi: index=%d size=%d isForce:%b",
-            trapezoidIndex, mBatteryIndexedMap.size(), isForce));
+                trapezoidIndex, mBatteryIndexedMap.size(), isForce));
 
         mTrapezoidIndex = trapezoidIndex;
         mHandler.post(() -> {
@@ -349,7 +360,7 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
 
     private void addAllPreferences() {
         final List<BatteryDiffEntry> entries =
-            mBatteryIndexedMap.get(Integer.valueOf(mTrapezoidIndex));
+                mBatteryIndexedMap.get(Integer.valueOf(mTrapezoidIndex));
         addFooterPreferenceIfNeeded(entries != null && !entries.isEmpty());
         if (entries == null) {
             Log.w(TAG, "cannot find BatteryDiffEntry for:" + mTrapezoidIndex);
@@ -377,7 +388,7 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
         Collections.sort(appEntries, BatteryDiffEntry.COMPARATOR);
         Collections.sort(mSystemEntries, BatteryDiffEntry.COMPARATOR);
         Log.d(TAG, String.format("addAllPreferences() app=%d system=%d",
-            appEntries.size(), mSystemEntries.size()));
+                appEntries.size(), mSystemEntries.size()));
 
         // Adds app entries to the list if it is not empty.
         if (!appEntries.isEmpty()) {
@@ -391,7 +402,7 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
                 mExpandDividerPreference.setIsExpanded(mIsExpanded);
             }
             mExpandDividerPreference.setOrder(
-                mAppListPrefGroup.getPreferenceCount());
+                    mAppListPrefGroup.getPreferenceCount());
             mAppListPrefGroup.addPreference(mExpandDividerPreference);
         }
         refreshExpandUi();
@@ -479,11 +490,11 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
         Log.d(TAG, String.format("refreshCategoryTitle:%s", slotInformation));
         if (mAppListPrefGroup != null) {
             mAppListPrefGroup.setTitle(
-                getSlotInformation(/*isApp=*/ true, slotInformation));
+                    getSlotInformation(/*isApp=*/ true, slotInformation));
         }
         if (mExpandDividerPreference != null) {
             mExpandDividerPreference.setTitle(
-                getSlotInformation(/*isApp=*/ false, slotInformation));
+                    getSlotInformation(/*isApp=*/ false, slotInformation));
         }
     }
 
@@ -491,12 +502,12 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
         // Null means we show all information without a specific time slot.
         if (slotInformation == null) {
             return isApp
-                ? mPrefContext.getString(R.string.battery_app_usage_for_past_24)
+                    ? mPrefContext.getString(R.string.battery_app_usage_for_past_24)
-                : mPrefContext.getString(R.string.battery_system_usage_for_past_24);
+                    : mPrefContext.getString(R.string.battery_system_usage_for_past_24);
         } else {
             return isApp
-                ? mPrefContext.getString(R.string.battery_app_usage_for, slotInformation)
+                    ? mPrefContext.getString(R.string.battery_app_usage_for, slotInformation)
-                : mPrefContext.getString(R.string.battery_system_usage_for ,slotInformation);
+                    : mPrefContext.getString(R.string.battery_system_usage_for, slotInformation);
         }
     }
 
@@ -505,12 +516,12 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
             return null;
         }
         final String fromHour = ConvertUtils.utcToLocalTimeHour(mPrefContext,
-            mBatteryHistoryKeys[mTrapezoidIndex * 2], mIs24HourFormat);
+                mBatteryHistoryKeys[mTrapezoidIndex * 2], mIs24HourFormat);
         final String toHour = ConvertUtils.utcToLocalTimeHour(mPrefContext,
-            mBatteryHistoryKeys[(mTrapezoidIndex + 1) * 2], mIs24HourFormat);
+                mBatteryHistoryKeys[(mTrapezoidIndex + 1) * 2], mIs24HourFormat);
         return mIs24HourFormat
-            ? String.format("%s–%s", fromHour, toHour)
+                ? String.format("%s–%s", fromHour, toHour)
-            : String.format("%s – %s", fromHour, toHour);
+                : String.format("%s – %s", fromHour, toHour);
     }
 
     @VisibleForTesting
@@ -528,10 +539,10 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
         // Not shows summary for some system components without usage time.
         if (totalUsageTimeInMs == 0) {
             preference.setSummary(null);
-        // Shows background summary only if we don't have foreground usage time.
+            // Shows background summary only if we don't have foreground usage time.
         } else if (foregroundUsageTimeInMs == 0 && backgroundUsageTimeInMs != 0) {
             usageTimeSummary = buildUsageTimeInfo(backgroundUsageTimeInMs, true);
-        // Shows total usage summary only if total usage time is small.
+            // Shows total usage summary only if total usage time is small.
         } else if (totalUsageTimeInMs < DateUtils.MINUTE_IN_MILLIS) {
             usageTimeSummary = buildUsageTimeInfo(totalUsageTimeInMs, false);
         } else {
@@ -539,7 +550,7 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
             // Shows background usage time if it is larger than a minute.
             if (backgroundUsageTimeInMs > 0) {
                 usageTimeSummary +=
-                    "\n" + buildUsageTimeInfo(backgroundUsageTimeInMs, true);
+                        "\n" + buildUsageTimeInfo(backgroundUsageTimeInMs, true);
             }
         }
         preference.setSummary(usageTimeSummary);
@@ -548,17 +559,17 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
     private String buildUsageTimeInfo(long usageTimeInMs, boolean isBackground) {
         if (usageTimeInMs < DateUtils.MINUTE_IN_MILLIS) {
             return mPrefContext.getString(
-                isBackground
+                    isBackground
-                    ? R.string.battery_usage_background_less_than_one_minute
+                            ? R.string.battery_usage_background_less_than_one_minute
-                    : R.string.battery_usage_total_less_than_one_minute);
+                            : R.string.battery_usage_total_less_than_one_minute);
         }
         final CharSequence timeSequence =
-            StringUtil.formatElapsedTime(mPrefContext, usageTimeInMs,
+                StringUtil.formatElapsedTime(mPrefContext, usageTimeInMs,
-                /*withSeconds=*/ false, /*collapseTimeUnit=*/ false);
+                        /*withSeconds=*/ false, /*collapseTimeUnit=*/ false);
         final int resourceId =
-            isBackground
+                isBackground
-                ? R.string.battery_usage_for_background_time
+                        ? R.string.battery_usage_for_background_time
-                : R.string.battery_usage_for_total_time;
+                        : R.string.battery_usage_for_total_time;
         return mPrefContext.getString(resourceId, timeSequence);
     }
 
@@ -578,7 +589,7 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
             return;
         }
         final long latestTimestamp =
-            mBatteryHistoryKeys[mBatteryHistoryKeys.length - 1];
+                mBatteryHistoryKeys[mBatteryHistoryKeys.length - 1];
         mBatteryChartView.setLatestTimestamp(latestTimestamp);
     }
 
@@ -588,9 +599,9 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
         }
         mIsFooterPrefAdded = true;
         mFooterPreference.setTitle(mPrefContext.getString(
-            containAppItems
+                containAppItems
-                ? R.string.battery_usage_screen_footer
+                        ? R.string.battery_usage_screen_footer
-                : R.string.battery_usage_screen_footer_empty));
+                        : R.string.battery_usage_screen_footer_empty));
         mHandler.post(() -> mPreferenceScreen.addPreference(mFooterPreference));
     }
 
@@ -623,21 +634,21 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
     public static List<BatteryDiffEntry> getBatteryLast24HrUsageData(Context context) {
         final long start = System.currentTimeMillis();
         final Map<Long, Map<String, BatteryHistEntry>> batteryHistoryMap =
-            FeatureFactory.getFactory(context)
+                FeatureFactory.getFactory(context)
-                .getPowerUsageFeatureProvider(context)
+                        .getPowerUsageFeatureProvider(context)
-                .getBatteryHistory(context);
+                        .getBatteryHistory(context);
         if (batteryHistoryMap == null || batteryHistoryMap.isEmpty()) {
             return null;
         }
         Log.d(TAG, String.format("getBatteryLast24HrData() size=%d time=&d/ms",
-            batteryHistoryMap.size(), (System.currentTimeMillis() - start)));
+                batteryHistoryMap.size(), (System.currentTimeMillis() - start)));
         final Map<Integer, List<BatteryDiffEntry>> batteryIndexedMap =
-            ConvertUtils.getIndexedUsageMap(
+                ConvertUtils.getIndexedUsageMap(
-                context,
+                        context,
-                /*timeSlotSize=*/ CHART_LEVEL_ARRAY_SIZE - 1,
+                        /*timeSlotSize=*/ CHART_LEVEL_ARRAY_SIZE - 1,
-                getBatteryHistoryKeys(batteryHistoryMap),
+                        getBatteryHistoryKeys(batteryHistoryMap),
-                batteryHistoryMap,
+                        batteryHistoryMap,
-                /*purgeLowPercentageAndFakeData=*/ true);
+                        /*purgeLowPercentageAndFakeData=*/ true);
         return batteryIndexedMap.get(BatteryChartView.SELECTED_INDEX_ALL);
     }
 
@@ -666,7 +677,7 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
     private static long[] getBatteryHistoryKeys(
             final Map<Long, Map<String, BatteryHistEntry>> batteryHistoryMap) {
         final List<Long> batteryHistoryKeyList =
-            new ArrayList<>(batteryHistoryMap.keySet());
+                new ArrayList<>(batteryHistoryMap.keySet());
         Collections.sort(batteryHistoryKeyList);
         final long[] batteryHistoryKeys = new long[CHART_KEY_ARRAY_SIZE];
         for (int index = 0; index < CHART_KEY_ARRAY_SIZE; index++) {
@@ -695,16 +706,16 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
             }
             final long startTime = System.currentTimeMillis();
             final Map<Integer, List<BatteryDiffEntry>> indexedUsageMap =
-                ConvertUtils.getIndexedUsageMap(
+                    ConvertUtils.getIndexedUsageMap(
-                    mPrefContext, /*timeSlotSize=*/ CHART_LEVEL_ARRAY_SIZE - 1,
+                            mPrefContext, /*timeSlotSize=*/ CHART_LEVEL_ARRAY_SIZE - 1,
-                    mBatteryHistoryKeysCache, mBatteryHistoryMap,
+                            mBatteryHistoryKeysCache, mBatteryHistoryMap,
-                    /*purgeLowPercentageAndFakeData=*/ true);
+                            /*purgeLowPercentageAndFakeData=*/ true);
             // Pre-loads each BatteryDiffEntry relative icon and label for all slots.
             for (List<BatteryDiffEntry> entries : indexedUsageMap.values()) {
                 entries.forEach(entry -> entry.loadLabelAndIcon());
             }
             Log.d(TAG, String.format("execute LoadAllItemsInfoTask in %d/ms",
-                (System.currentTimeMillis() - startTime)));
+                    (System.currentTimeMillis() - startTime)));
             return indexedUsageMap;
         }
 

src/com/android/settings/fuelgauge/batteryusage/BatteryChartView.java

@@ -1,22 +1,24 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 The Android Open Source Project
  *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
+ * Licensed under the Apache License, Version 2.0 (the "License");
- * except in compliance with the License. You may obtain a copy of the License at
+ * 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
+ * Unless required by applicable law or agreed to in writing, software
- * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * distributed under the License is distributed on an "AS IS" BASIS,
- * KIND, either express or implied. See the License for the specific language governing
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * permissions and limitations under the License.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
-
-import static java.lang.Math.round;
 
 import static com.android.settings.Utils.formatPercentage;
 
+import static java.lang.Math.round;
+
 import android.accessibilityservice.AccessibilityServiceInfo;
 import android.content.Context;
 import android.content.res.Resources;
@@ -37,8 +39,8 @@ import android.view.View;
 import android.view.accessibility.AccessibilityManager;
 import android.widget.TextView;
 
-import androidx.appcompat.widget.AppCompatImageView;
 import androidx.annotation.VisibleForTesting;
+import androidx.appcompat.widget.AppCompatImageView;
 
 import com.android.settings.R;
 import com.android.settings.overlay.FeatureFactory;
@@ -54,7 +56,7 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
         AccessibilityManager.AccessibilityStateChangeListener {
     private static final String TAG = "BatteryChartView";
     private static final List<String> ACCESSIBILITY_SERVICE_NAMES =
-        Arrays.asList("SwitchAccessService", "TalkBackService", "JustSpeakService");
+            Arrays.asList("SwitchAccessService", "TalkBackService", "JustSpeakService");
 
     private static final int DEFAULT_TRAPEZOID_COUNT = 12;
     private static final int DEFAULT_TIMESTAMP_COUNT = 4;
@@ -68,6 +70,7 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
 
     /** A callback listener for selected group index is updated. */
     public interface OnSelectListener {
+        /** The callback function for selected group index is updated. */
         void onSelect(int trapezoidIndex);
     }
 
@@ -79,9 +82,12 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
     private boolean mIsSlotsClickabled;
     private String[] mPercentages = getPercentages();
 
-    @VisibleForTesting int mHoveredIndex = SELECTED_INDEX_INVALID;
+    @VisibleForTesting
-    @VisibleForTesting int mSelectedIndex = SELECTED_INDEX_INVALID;
+    int mHoveredIndex = SELECTED_INDEX_INVALID;
-    @VisibleForTesting String[] mTimestamps;
+    @VisibleForTesting
+    int mSelectedIndex = SELECTED_INDEX_INVALID;
+    @VisibleForTesting
+    String[] mTimestamps;
 
     // Colors for drawing the trapezoid shape and dividers.
     private int mTrapezoidColor;
@@ -91,10 +97,10 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
     private int mTextPadding;
     private final Rect mIndent = new Rect();
     private final Rect[] mPercentageBounds =
-        new Rect[] {new Rect(), new Rect(), new Rect()};
+            new Rect[]{new Rect(), new Rect(), new Rect()};
     // For drawing the timestamp information.
     private final Rect[] mTimestampsBounds =
-        new Rect[] {new Rect(), new Rect(), new Rect(), new Rect()};
+            new Rect[]{new Rect(), new Rect(), new Rect(), new Rect()};
 
     @VisibleForTesting
     Handler mHandler = new Handler();
@@ -202,14 +208,15 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
             mTimestamps = new String[DEFAULT_TIMESTAMP_COUNT];
         }
         final long timeSlotOffset =
-            DateUtils.HOUR_IN_MILLIS * (/*total 24 hours*/ 24 / TIMESTAMP_GAPS_COUNT);
+                DateUtils.HOUR_IN_MILLIS * (/*total 24 hours*/ 24 / TIMESTAMP_GAPS_COUNT);
         final boolean is24HourFormat = DateFormat.is24HourFormat(getContext());
         for (int index = 0; index < DEFAULT_TIMESTAMP_COUNT; index++) {
             mTimestamps[index] =
-                ConvertUtils.utcToLocalTimeHour(
+                    ConvertUtils.utcToLocalTimeHour(
-                    getContext(),
+                            getContext(),
-                    latestTimestamp - (TIMESTAMP_GAPS_COUNT - index) * timeSlotOffset,
+                            latestTimestamp - (TIMESTAMP_GAPS_COUNT - index)
-                    is24HourFormat);
+                                    * timeSlotOffset,
+                            is24HourFormat);
         }
         requestLayout();
     }
@@ -221,8 +228,8 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
         if (mTextPaint != null) {
             for (int index = 0; index < mPercentages.length; index++) {
                 mTextPaint.getTextBounds(
-                    mPercentages[index], 0, mPercentages[index].length(),
+                        mPercentages[index], 0, mPercentages[index].length(),
-                    mPercentageBounds[index]);
+                        mPercentageBounds[index]);
             }
             // Updates the indent configurations.
             mIndent.top = mPercentageBounds[0].height();
@@ -232,8 +239,8 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
                 int maxHeight = 0;
                 for (int index = 0; index < DEFAULT_TIMESTAMP_COUNT; index++) {
                     mTextPaint.getTextBounds(
-                        mTimestamps[index], 0, mTimestamps[index].length(),
+                            mTimestamps[index], 0, mTimestamps[index].length(),
-                        mTimestampsBounds[index]);
+                            mTimestampsBounds[index]);
                     maxHeight = Math.max(maxHeight, mTimestampsBounds[index].height());
                 }
                 mIndent.bottom = maxHeight + round(mTextPadding * 1.5f);
@@ -318,14 +325,14 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
         super.onAttachedToWindow();
         updateClickableState();
         mContext.getSystemService(AccessibilityManager.class)
-            .addAccessibilityStateChangeListener(/*listener=*/ this);
+                .addAccessibilityStateChangeListener(/*listener=*/ this);
     }
 
     @Override
     public void onDetachedFromWindow() {
         super.onDetachedFromWindow();
         mContext.getSystemService(AccessibilityManager.class)
-            .removeAccessibilityStateChangeListener(/*listener=*/ this);
+                .removeAccessibilityStateChangeListener(/*listener=*/ this);
         mHandler.removeCallbacks(mUpdateClickableStateRun);
     }
 
@@ -336,16 +343,16 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
         // We should delay it a while since accessibility manager will spend
         // some times to bind with new enabled accessibility services.
         mHandler.postDelayed(
-            mUpdateClickableStateRun, UPDATE_STATE_DELAYED_TIME);
+                mUpdateClickableStateRun, UPDATE_STATE_DELAYED_TIME);
     }
 
     private void updateClickableState() {
         final Context context = mContext;
         mIsSlotsClickabled =
-            FeatureFactory.getFactory(context)
+                FeatureFactory.getFactory(context)
-                    .getPowerUsageFeatureProvider(context)
+                        .getPowerUsageFeatureProvider(context)
-                    .isChartGraphSlotsEnabled(context)
+                        .isChartGraphSlotsEnabled(context)
-            && !isAccessibilityEnabled(context);
+                        && !isAccessibilityEnabled(context);
         Log.d(TAG, "isChartGraphSlotsEnabled:" + mIsSlotsClickabled);
         setClickable(isClickable());
         // Initializes the trapezoid curve paint for non-clickable case.
@@ -378,7 +385,7 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
         mTrapezoidSolidColor = Utils.getColorAccentDefaultColor(context);
         mTrapezoidColor = Utils.getDisabled(context, mTrapezoidSolidColor);
         mTrapezoidHoverColor = Utils.getColorAttrDefaultColor(context,
-            com.android.internal.R.attr.colorAccentSecondaryVariant);
+                com.android.internal.R.attr.colorAccentSecondaryVariant);
         // Initializes the divider line paint.
         final Resources resources = getContext().getResources();
         mDividerWidth = resources.getDimensionPixelSize(R.dimen.chartview_divider_width);
@@ -398,8 +405,8 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
         mTrapezoidPaint.setColor(mTrapezoidSolidColor);
         mTrapezoidPaint.setStyle(Paint.Style.FILL);
         mTrapezoidPaint.setPathEffect(
-            new CornerPathEffect(
+                new CornerPathEffect(
-                resources.getDimensionPixelSize(R.dimen.chartview_trapezoid_radius)));
+                        resources.getDimensionPixelSize(R.dimen.chartview_trapezoid_radius)));
         // Initializes for drawing text information.
         mTextPadding = resources.getDimensionPixelSize(R.dimen.chartview_text_padding);
     }
@@ -414,7 +421,7 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
 
         // Draws the center divider line for 50% curve.
         final float availableSpace =
-            height - mDividerWidth * 2 - mTrapezoidVOffset - mDividerHeight;
+                height - mDividerWidth * 2 - mTrapezoidVOffset - mDividerHeight;
         offsetY = mIndent.top + mDividerWidth + availableSpace * .5f;
         canvas.drawLine(0, offsetY, width, offsetY, mDividerPaint);
         drawPercentage(canvas, /*index=*/ 1, offsetY);
@@ -428,10 +435,11 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
     private void drawPercentage(Canvas canvas, int index, float offsetY) {
         if (mTextPaint != null) {
             canvas.drawText(
-                mPercentages[index],
+                    mPercentages[index],
-                getWidth() - mPercentageBounds[index].width() - mPercentageBounds[index].left,
+                    getWidth() - mPercentageBounds[index].width()
-                offsetY + mPercentageBounds[index].height() *.5f,
+                            - mPercentageBounds[index].left,
-                mTextPaint);
+                    offsetY + mPercentageBounds[index].height() * .5f,
+                    mTextPaint);
         }
     }
 
@@ -471,31 +479,32 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
     private void drawTimestamp(Canvas canvas, float[] xOffsets) {
         // Draws the 1st timestamp info.
         canvas.drawText(
-            mTimestamps[0],
+                mTimestamps[0],
-            xOffsets[0] - mTimestampsBounds[0].left,
+                xOffsets[0] - mTimestampsBounds[0].left,
-            getTimestampY(0), mTextPaint);
+                getTimestampY(0), mTextPaint);
         final int latestIndex = DEFAULT_TIMESTAMP_COUNT - 1;
         // Draws the last timestamp info.
         canvas.drawText(
-            mTimestamps[latestIndex],
+                mTimestamps[latestIndex],
-            xOffsets[latestIndex] - mTimestampsBounds[latestIndex].width()
+                xOffsets[latestIndex] - mTimestampsBounds[latestIndex].width()
-                    - mTimestampsBounds[latestIndex].left,
+                        - mTimestampsBounds[latestIndex].left,
-            getTimestampY(latestIndex), mTextPaint);
+                getTimestampY(latestIndex), mTextPaint);
         // Draws the rest of timestamp info since it is located in the center.
         for (int index = 1; index <= DEFAULT_TIMESTAMP_COUNT - 2; index++) {
             canvas.drawText(
-                mTimestamps[index],
+                    mTimestamps[index],
-                xOffsets[index] -
+                    xOffsets[index]
-                    (mTimestampsBounds[index].width() - mTimestampsBounds[index].left) * .5f,
+                            - (mTimestampsBounds[index].width() - mTimestampsBounds[index].left)
-                getTimestampY(index), mTextPaint);
+                            * .5f,
+                    getTimestampY(index), mTextPaint);
 
         }
     }
 
     private int getTimestampY(int index) {
         return getHeight() - mTimestampsBounds[index].height()
-            + (mTimestampsBounds[index].height() + mTimestampsBounds[index].top)
+                + (mTimestampsBounds[index].height() + mTimestampsBounds[index].top)
-            + round(mTextPadding * 1.5f);
+                + round(mTextPadding * 1.5f);
     }
 
     private void drawTrapezoids(Canvas canvas) {
@@ -504,8 +513,8 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
             return;
         }
         final float trapezoidBottom =
-            getHeight() - mIndent.bottom - mDividerHeight - mDividerWidth
+                getHeight() - mIndent.bottom - mDividerHeight - mDividerWidth
-                - mTrapezoidVOffset;
+                        - mTrapezoidVOffset;
         final float availableSpace = trapezoidBottom - mDividerWidth * .5f - mIndent.top;
         final float unitHeight = availableSpace / 100f;
         // Draws all trapezoid shapes into the canvas.
@@ -522,12 +531,12 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
             }
             // Configures the trapezoid paint color.
             final int trapezoidColor =
-                !mIsSlotsClickabled
+                    !mIsSlotsClickabled
-                    ? mTrapezoidColor
+                            ? mTrapezoidColor
-                    : mSelectedIndex == index || mSelectedIndex == SELECTED_INDEX_ALL
+                            : mSelectedIndex == index || mSelectedIndex == SELECTED_INDEX_ALL
-                        ? mTrapezoidSolidColor : mTrapezoidColor;
+                                    ? mTrapezoidSolidColor : mTrapezoidColor;
             final boolean isHoverState =
-                mIsSlotsClickabled && mHoveredIndex == index && isValidToDraw(mHoveredIndex);
+                    mIsSlotsClickabled && mHoveredIndex == index && isValidToDraw(mHoveredIndex);
             mTrapezoidPaint.setColor(isHoverState ? mTrapezoidHoverColor : trapezoidColor);
 
             final float leftTop = round(trapezoidBottom - mLevels[index] * unitHeight);
@@ -546,7 +555,7 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
             // Generates path for non-clickable trapezoid curve.
             if (mTrapezoidCurvePaint != null) {
                 if (trapezoidCurvePath == null) {
-                    trapezoidCurvePath= new Path();
+                    trapezoidCurvePath = new Path();
                     trapezoidCurvePath.moveTo(mTrapezoidSlots[index].mLeft, leftTop);
                 } else {
                     trapezoidCurvePath.lineTo(mTrapezoidSlots[index].mLeft, leftTop);
@@ -582,23 +591,23 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
     }
 
     private static String[] getPercentages() {
-        return new String[] {
+        return new String[]{
-            formatPercentage(/*percentage=*/ 100, /*round=*/ true),
+                formatPercentage(/*percentage=*/ 100, /*round=*/ true),
-            formatPercentage(/*percentage=*/ 50, /*round=*/ true),
+                formatPercentage(/*percentage=*/ 50, /*round=*/ true),
-            formatPercentage(/*percentage=*/ 0, /*round=*/ true)};
+                formatPercentage(/*percentage=*/ 0, /*round=*/ true)};
     }
 
     @VisibleForTesting
     static boolean isAccessibilityEnabled(Context context) {
         final AccessibilityManager accessibilityManager =
-            context.getSystemService(AccessibilityManager.class);
+                context.getSystemService(AccessibilityManager.class);
         if (!accessibilityManager.isEnabled()) {
             return false;
         }
         final List<AccessibilityServiceInfo> serviceInfoList =
-            accessibilityManager.getEnabledAccessibilityServiceList(
+                accessibilityManager.getEnabledAccessibilityServiceList(
-                AccessibilityServiceInfo.FEEDBACK_SPOKEN
+                        AccessibilityServiceInfo.FEEDBACK_SPOKEN
-                    | AccessibilityServiceInfo.FEEDBACK_GENERIC);
+                                | AccessibilityServiceInfo.FEEDBACK_GENERIC);
         for (AccessibilityServiceInfo info : serviceInfoList) {
             for (String serviceName : ACCESSIBILITY_SERVICE_NAMES) {
                 final String serviceId = info.getId();

src/com/android/settings/fuelgauge/batteryusage/BatteryDiffEntry.java

@@ -1,17 +1,19 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 The Android Open Source Project
  *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
+ * Licensed under the Apache License, Version 2.0 (the "License");
- * except in compliance with the License. You may obtain a copy of the License at
+ * 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
+ * Unless required by applicable law or agreed to in writing, software
- * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * distributed under the License is distributed on an "AS IS" BASIS,
- * KIND, either express or implied. See the License for the specific language governing
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * permissions and limitations under the License.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
@@ -26,6 +28,7 @@ import android.util.Log;
 import androidx.annotation.VisibleForTesting;
 
 import com.android.settings.R;
+import com.android.settings.fuelgauge.BatteryUtils;
 import com.android.settingslib.utils.StringUtil;
 
 import java.util.Comparator;
@@ -61,11 +64,16 @@ public class BatteryDiffEntry {
     private UserManager mUserManager;
     private String mDefaultPackageName = null;
 
-    @VisibleForTesting int mAppIconId;
+    @VisibleForTesting
-    @VisibleForTesting String mAppLabel = null;
+    int mAppIconId;
-    @VisibleForTesting Drawable mAppIcon = null;
+    @VisibleForTesting
-    @VisibleForTesting boolean mIsLoaded = false;
+    String mAppLabel = null;
-    @VisibleForTesting boolean mValidForRestriction = true;
+    @VisibleForTesting
+    Drawable mAppIcon = null;
+    @VisibleForTesting
+    boolean mIsLoaded = false;
+    @VisibleForTesting
+    boolean mValidForRestriction = true;
 
     public BatteryDiffEntry(
             Context context,
@@ -85,7 +93,7 @@ public class BatteryDiffEntry {
     public void setTotalConsumePower(double totalConsumePower) {
         mTotalConsumePower = totalConsumePower;
         mPercentOfTotal = totalConsumePower == 0
-            ? 0 : (mConsumePower / mTotalConsumePower) * 100.0;
+                ? 0 : (mConsumePower / mTotalConsumePower) * 100.0;
     }
 
     /** Gets the percentage of total consumed power. */
@@ -96,11 +104,11 @@ public class BatteryDiffEntry {
     /** Clones a new instance. */
     public BatteryDiffEntry clone() {
         return new BatteryDiffEntry(
-            this.mContext,
+                this.mContext,
-            this.mForegroundUsageTimeInMs,
+                this.mForegroundUsageTimeInMs,
-            this.mBackgroundUsageTimeInMs,
+                this.mBackgroundUsageTimeInMs,
-            this.mConsumePower,
+                this.mConsumePower,
-            this.mBatteryHistEntry /*same instance*/);
+                this.mBatteryHistEntry /*same instance*/);
     }
 
     /** Gets the app label name for this entry. */
@@ -108,8 +116,8 @@ public class BatteryDiffEntry {
         loadLabelAndIcon();
         // Returns default applicationn label if we cannot find it.
         return mAppLabel == null || mAppLabel.length() == 0
-            ? mBatteryHistEntry.mAppLabel
+                ? mBatteryHistEntry.mAppLabel
-            : mAppLabel;
+                : mAppLabel;
     }
 
     /** Gets the app icon {@link Drawable} for this entry. */
@@ -129,15 +137,15 @@ public class BatteryDiffEntry {
     /** Gets the searching package name for UID battery type. */
     public String getPackageName() {
         final String packageName = mDefaultPackageName != null
-            ? mDefaultPackageName : mBatteryHistEntry.mPackageName;
+                ? mDefaultPackageName : mBatteryHistEntry.mPackageName;
         if (packageName == null) {
             return packageName;
         }
         // Removes potential appended process name in the PackageName.
         // From "com.opera.browser:privileged_process0" to "com.opera.browser"
-        final String[] splittedPackageNames = packageName.split(":");
+        final String[] splitPackageNames = packageName.split(":");
-        return splittedPackageNames != null && splittedPackageNames.length > 0
+        return splitPackageNames != null && splitPackageNames.length > 0
-            ? splittedPackageNames[0] : packageName;
+                ? splitPackageNames[0] : packageName;
     }
 
     /** Whether this item is valid for users to launch restriction page? */
@@ -196,20 +204,20 @@ public class BatteryDiffEntry {
         switch (mBatteryHistEntry.mConsumerType) {
             case ConvertUtils.CONSUMER_TYPE_USER_BATTERY:
                 final BatteryEntry.NameAndIcon nameAndIconForUser =
-                    BatteryEntry.getNameAndIconFromUserId(
+                        BatteryEntry.getNameAndIconFromUserId(
-                        mContext, (int) mBatteryHistEntry.mUserId);
+                                mContext, (int) mBatteryHistEntry.mUserId);
                 if (nameAndIconForUser != null) {
                     mAppIcon = nameAndIconForUser.mIcon;
                     mAppLabel = nameAndIconForUser.mName;
                     sResourceCache.put(
-                        getKey(),
+                            getKey(),
-                        new BatteryEntry.NameAndIcon(mAppLabel, mAppIcon, /*iconId=*/ 0));
+                            new BatteryEntry.NameAndIcon(mAppLabel, mAppIcon, /*iconId=*/ 0));
                 }
                 break;
             case ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY:
                 final BatteryEntry.NameAndIcon nameAndIconForSystem =
-                    BatteryEntry.getNameAndIconFromPowerComponent(
+                        BatteryEntry.getNameAndIconFromPowerComponent(
-                        mContext, mBatteryHistEntry.mDrainType);
+                                mContext, mBatteryHistEntry.mDrainType);
                 if (nameAndIconForSystem != null) {
                     mAppLabel = nameAndIconForSystem.mName;
                     if (nameAndIconForSystem.mIconId != 0) {
@@ -217,8 +225,8 @@ public class BatteryDiffEntry {
                         mAppIcon = mContext.getDrawable(nameAndIconForSystem.mIconId);
                     }
                     sResourceCache.put(
-                        getKey(),
+                            getKey(),
-                        new BatteryEntry.NameAndIcon(mAppLabel, mAppIcon, mAppIconId));
+                            new BatteryEntry.NameAndIcon(mAppLabel, mAppIcon, mAppIconId));
                 }
                 break;
             case ConvertUtils.CONSUMER_TYPE_UID_BATTERY:
@@ -231,8 +239,8 @@ public class BatteryDiffEntry {
                 mAppIcon = getBadgeIconForUser(mAppIcon);
                 if (mAppLabel != null || mAppIcon != null) {
                     sResourceCache.put(
-                        getKey(),
+                            getKey(),
-                        new BatteryEntry.NameAndIcon(mAppLabel, mAppIcon, /*iconId=*/ 0));
+                            new BatteryEntry.NameAndIcon(mAppLabel, mAppIcon, /*iconId=*/ 0));
                 }
                 break;
         }
@@ -251,23 +259,23 @@ public class BatteryDiffEntry {
         }
         final boolean isValidPackage =
                 BatteryUtils.getInstance(mContext).getPackageUid(getPackageName())
-            != BatteryUtils.UID_NULL;
+                        != BatteryUtils.UID_NULL;
         if (!isValidPackage) {
             mValidForRestriction = false;
             return;
         }
         try {
             mValidForRestriction =
-                mContext.getPackageManager().getPackageInfo(
+                    mContext.getPackageManager().getPackageInfo(
-                    getPackageName(),
+                            getPackageName(),
-                    PackageManager.MATCH_DISABLED_COMPONENTS
+                            PackageManager.MATCH_DISABLED_COMPONENTS
-                        | PackageManager.MATCH_ANY_USER
+                                    | PackageManager.MATCH_ANY_USER
-                        | PackageManager.GET_SIGNATURES
+                                    | PackageManager.GET_SIGNATURES
-                        | PackageManager.GET_PERMISSIONS)
+                                    | PackageManager.GET_PERMISSIONS)
-                != null;
+                            != null;
         } catch (Exception e) {
             Log.e(TAG, String.format("getPackageInfo() error %s for package=%s",
-                e.getCause(), getPackageName()));
+                    e.getCause(), getPackageName()));
             mValidForRestriction = false;
         }
     }
@@ -276,7 +284,7 @@ public class BatteryDiffEntry {
         final Locale locale = Locale.getDefault();
         if (sCurrentLocale != locale) {
             Log.d(TAG, String.format("clearCache() locale is changed from %s to %s",
-                sCurrentLocale, locale));
+                    sCurrentLocale, locale));
             sCurrentLocale = locale;
             clearCache();
         }
@@ -290,7 +298,7 @@ public class BatteryDiffEntry {
         if (packageName != null && packageName.length() != 0) {
             try {
                 final ApplicationInfo appInfo =
-                    packageManager.getApplicationInfo(packageName, /*no flags*/ 0);
+                        packageManager.getApplicationInfo(packageName, /*no flags*/ 0);
                 if (appInfo != null) {
                     mAppLabel = packageManager.getApplicationLabel(appInfo).toString();
                     mAppIcon = packageManager.getApplicationIcon(appInfo);
@@ -310,15 +318,15 @@ public class BatteryDiffEntry {
         // Loads special defined application label and icon if available.
         if (packages == null || packages.length == 0) {
             final BatteryEntry.NameAndIcon nameAndIcon =
-                BatteryEntry.getNameAndIconFromUid(mContext, mAppLabel, uid);
+                    BatteryEntry.getNameAndIconFromUid(mContext, mAppLabel, uid);
             mAppLabel = nameAndIcon.mName;
             mAppIcon = nameAndIcon.mIcon;
         }
 
         final BatteryEntry.NameAndIcon nameAndIcon =
-            BatteryEntry.loadNameAndIcon(
+                BatteryEntry.loadNameAndIcon(
-                mContext, uid, /*handler=*/ null, /*batteryEntry=*/ null,
+                        mContext, uid, /*handler=*/ null, /*batteryEntry=*/ null,
-                packageName, mAppLabel, mAppIcon);
+                        packageName, mAppLabel, mAppIcon);
         // Clears BatteryEntry internal cache since we will have another one.
         BatteryEntry.clearUidCache();
         if (nameAndIcon != null) {
@@ -328,7 +336,7 @@ public class BatteryDiffEntry {
             if (mDefaultPackageName != null
                     && !mDefaultPackageName.equals(nameAndIcon.mPackageName)) {
                 Log.w(TAG, String.format("found different package: %s | %s",
-                    mDefaultPackageName, nameAndIcon.mPackageName));
+                        mDefaultPackageName, nameAndIcon.mPackageName));
             }
         }
     }
@@ -336,19 +344,19 @@ public class BatteryDiffEntry {
     @Override
     public String toString() {
         final StringBuilder builder = new StringBuilder()
-            .append("BatteryDiffEntry{")
+                .append("BatteryDiffEntry{")
-            .append(String.format("\n\tname=%s restrictable=%b",
+                .append(String.format("\n\tname=%s restrictable=%b",
-                  mAppLabel, mValidForRestriction))
+                        mAppLabel, mValidForRestriction))
-            .append(String.format("\n\tconsume=%.2f%% %f/%f",
+                .append(String.format("\n\tconsume=%.2f%% %f/%f",
-                  mPercentOfTotal, mConsumePower, mTotalConsumePower))
+                        mPercentOfTotal, mConsumePower, mTotalConsumePower))
-            .append(String.format("\n\tforeground:%s background:%s",
+                .append(String.format("\n\tforeground:%s background:%s",
-                  StringUtil.formatElapsedTime(mContext, mForegroundUsageTimeInMs,
+                        StringUtil.formatElapsedTime(mContext, mForegroundUsageTimeInMs,
-                      /*withSeconds=*/ true, /*collapseTimeUnit=*/ false),
+                                /*withSeconds=*/ true, /*collapseTimeUnit=*/ false),
-                  StringUtil.formatElapsedTime(mContext, mBackgroundUsageTimeInMs,
+                        StringUtil.formatElapsedTime(mContext, mBackgroundUsageTimeInMs,
-                      /*withSeconds=*/ true, /*collapseTimeUnit=*/ false)))
+                                /*withSeconds=*/ true, /*collapseTimeUnit=*/ false)))
-            .append(String.format("\n\tpackage:%s|%s uid:%d userId:%d",
+                .append(String.format("\n\tpackage:%s|%s uid:%d userId:%d",
-                  mBatteryHistEntry.mPackageName, getPackageName(),
+                        mBatteryHistEntry.mPackageName, getPackageName(),
-                  mBatteryHistEntry.mUid, mBatteryHistEntry.mUserId));
+                        mBatteryHistEntry.mUid, mBatteryHistEntry.mUserId));
         return builder.toString();
     }
 
@@ -361,7 +369,7 @@ public class BatteryDiffEntry {
     private Drawable getBadgeIconForUser(Drawable icon) {
         final int userId = UserHandle.getUserId((int) mBatteryHistEntry.mUid);
         return userId == UserHandle.USER_OWNER ? icon :
-            mUserManager.getBadgedIconForUser(icon, new UserHandle(userId));
+                mUserManager.getBadgedIconForUser(icon, new UserHandle(userId));
     }
 
     private static boolean isSystemUid(int uid) {

src/com/android/settings/fuelgauge/batteryusage/BatteryEntry.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2014 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import android.app.AppGlobals;
 import android.content.Context;
@@ -36,9 +36,8 @@ import android.os.UserManager;
 import android.util.DebugUtils;
 import android.util.Log;
 
-import androidx.annotation.NonNull;
-
 import com.android.settings.R;
+import com.android.settings.fuelgauge.BatteryUtils;
 import com.android.settingslib.Utils;
 
 import java.util.ArrayList;
@@ -52,6 +51,7 @@ import java.util.Locale;
  */
 public class BatteryEntry {
 
+    /** The app name and icon in app list. */
     public static final class NameAndIcon {
         public final String mName;
         public final String mPackageName;
@@ -84,10 +84,10 @@ public class BatteryEntry {
 
     static Locale sCurrentLocale = null;
 
-    static private class NameAndIconLoader extends Thread {
+    private static class NameAndIconLoader extends Thread {
         private boolean mAbort = false;
 
-        public NameAndIconLoader() {
+        NameAndIconLoader() {
             super("BatteryUsage Icon Loader");
         }
 
@@ -109,9 +109,9 @@ public class BatteryEntry {
                     be = sRequestQueue.remove(0);
                 }
                 final NameAndIcon nameAndIcon =
-                    BatteryEntry.loadNameAndIcon(
+                        BatteryEntry.loadNameAndIcon(
-                        be.mContext, be.getUid(), sHandler, be,
+                                be.mContext, be.getUid(), sHandler, be,
-                        be.mDefaultPackageName, be.mName, be.mIcon);
+                                be.mDefaultPackageName, be.mName, be.mIcon);
                 if (nameAndIcon != null) {
                     be.mIcon = nameAndIcon.mIcon;
                     be.mName = nameAndIcon.mName;
@@ -121,35 +121,38 @@ public class BatteryEntry {
         }
     }
 
-    private static NameAndIconLoader mRequestThread;
+    private static NameAndIconLoader sRequestThread;
 
+    /** Starts the request queue. */
     public static void startRequestQueue() {
         if (sHandler != null) {
             synchronized (sRequestQueue) {
                 if (!sRequestQueue.isEmpty()) {
-                    if (mRequestThread != null) {
+                    if (sRequestThread != null) {
-                        mRequestThread.abort();
+                        sRequestThread.abort();
                     }
-                    mRequestThread = new NameAndIconLoader();
+                    sRequestThread = new NameAndIconLoader();
-                    mRequestThread.setPriority(Thread.MIN_PRIORITY);
+                    sRequestThread.setPriority(Thread.MIN_PRIORITY);
-                    mRequestThread.start();
+                    sRequestThread.start();
                     sRequestQueue.notify();
                 }
             }
         }
     }
 
+    /** Stops the request queue. */
     public static void stopRequestQueue() {
         synchronized (sRequestQueue) {
-            if (mRequestThread != null) {
+            if (sRequestThread != null) {
-                mRequestThread.abort();
+                sRequestThread.abort();
-                mRequestThread = null;
+                sRequestThread = null;
                 sRequestQueue.clear();
                 sHandler = null;
             }
         }
     }
 
+    /** Clears the UID cache. */
     public static void clearUidCache() {
         sUidCache.clear();
     }
@@ -252,14 +255,14 @@ public class BatteryEntry {
         mIsHidden = false;
         mPowerComponentId = powerComponentId;
         mConsumedPower =
-            powerComponentId == BatteryConsumer.POWER_COMPONENT_SCREEN
+                powerComponentId == BatteryConsumer.POWER_COMPONENT_SCREEN
-                ? devicePowerMah
+                        ? devicePowerMah
-                : devicePowerMah - appsPowerMah;
+                        : devicePowerMah - appsPowerMah;
         mUsageDurationMs = usageDurationMs;
         mConsumerType = ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY;
 
         final NameAndIcon nameAndIcon =
-            getNameAndIconFromPowerComponent(context, powerComponentId);
+                getNameAndIconFromPowerComponent(context, powerComponentId);
         mIconId = nameAndIcon.mIconId;
         mName = nameAndIcon.mName;
         if (mIconId != 0) {
@@ -280,9 +283,9 @@ public class BatteryEntry {
         mIcon = context.getDrawable(mIconId);
         mName = powerComponentName;
         mConsumedPower =
-            powerComponentId == BatteryConsumer.POWER_COMPONENT_SCREEN
+                powerComponentId == BatteryConsumer.POWER_COMPONENT_SCREEN
-                ? devicePowerMah
+                        ? devicePowerMah
-                : devicePowerMah - appsPowerMah;
+                        : devicePowerMah - appsPowerMah;
         mConsumerType = ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY;
     }
 
@@ -354,7 +357,7 @@ public class BatteryEntry {
 
         final PackageManager pm = context.getPackageManager();
         final String[] packages = isSystemUid(uid)
-                ? new String[] {PACKAGE_SYSTEM} : pm.getPackagesForUid(uid);
+                ? new String[]{PACKAGE_SYSTEM} : pm.getPackagesForUid(uid);
         if (packages != null) {
             final String[] packageLabels = new String[packages.length];
             System.arraycopy(packages, 0, packageLabels, 0, packages.length);
@@ -552,8 +555,8 @@ public class BatteryEntry {
             name = context.getResources().getString(R.string.process_network_tethering);
         } else if ("mediaserver".equals(name)) {
             name = context.getResources().getString(R.string.process_mediaserver_label);
-        } else if ("dex2oat".equals(name) || "dex2oat32".equals(name) ||
+        } else if ("dex2oat".equals(name) || "dex2oat32".equals(name)
-                "dex2oat64".equals(name)) {
+                || "dex2oat64".equals(name)) {
             name = context.getResources().getString(R.string.process_dex2oat_label);
         }
         return new NameAndIcon(name, icon, 0 /* iconId */);
@@ -612,7 +615,8 @@ public class BatteryEntry {
         return new NameAndIcon(name, null /* icon */, iconId);
     }
 
-    static boolean isSystemUid(int uid) {
+    /** Whether the uid is system uid. */
+    public static boolean isSystemUid(int uid) {
         return uid == Process.SYSTEM_UID;
     }
 }

src/com/android/settings/fuelgauge/batteryusage/BatteryHistEntry.java

@@ -1,17 +1,19 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 The Android Open Source Project
  *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
+ * Licensed under the Apache License, Version 2.0 (the "License");
- * except in compliance with the License. You may obtain a copy of the License at
+ * 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
+ * Unless required by applicable law or agreed to in writing, software
- * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * distributed under the License is distributed on an "AS IS" BASIS,
- * KIND, either express or implied. See the License for the specific language governing
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * permissions and limitations under the License.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import android.content.ContentValues;
 import android.database.Cursor;
@@ -117,14 +119,14 @@ public class BatteryHistEntry {
     }
 
     private BatteryHistEntry(
-          BatteryHistEntry fromEntry,
+            BatteryHistEntry fromEntry,
-          long bootTimestamp,
+            long bootTimestamp,
-          long timestamp,
+            long timestamp,
-          double totalPower,
+            double totalPower,
-          double consumePower,
+            double consumePower,
-          long foregroundUsageTimeInMs,
+            long foregroundUsageTimeInMs,
-          long backgroundUsageTimeInMs,
+            long backgroundUsageTimeInMs,
-          int batteryLevel) {
+            int batteryLevel) {
         mUid = fromEntry.mUid;
         mUserId = fromEntry.mUserId;
         mAppLabel = fromEntry.mAppLabel;
@@ -186,28 +188,28 @@ public class BatteryHistEntry {
     @Override
     public String toString() {
         final String recordAtDateTime =
-            ConvertUtils.utcToLocalTime(/*context=*/ null, mTimestamp);
+                ConvertUtils.utcToLocalTime(/*context=*/ null, mTimestamp);
         final StringBuilder builder = new StringBuilder()
-            .append("\nBatteryHistEntry{")
+                .append("\nBatteryHistEntry{")
-            .append(String.format("\n\tpackage=%s|label=%s|uid=%d|userId=%d|isHidden=%b",
+                .append(String.format("\n\tpackage=%s|label=%s|uid=%d|userId=%d|isHidden=%b",
-                  mPackageName, mAppLabel, mUid, mUserId, mIsHidden))
+                        mPackageName, mAppLabel, mUid, mUserId, mIsHidden))
-            .append(String.format("\n\ttimestamp=%s|zoneId=%s|bootTimestamp=%d",
+                .append(String.format("\n\ttimestamp=%s|zoneId=%s|bootTimestamp=%d",
-                  recordAtDateTime, mZoneId, Duration.ofMillis(mBootTimestamp).getSeconds()))
+                        recordAtDateTime, mZoneId, Duration.ofMillis(mBootTimestamp).getSeconds()))
-            .append(String.format("\n\tusage=%f|total=%f|consume=%f|elapsedTime=%d|%d",
+                .append(String.format("\n\tusage=%f|total=%f|consume=%f|elapsedTime=%d|%d",
-                  mPercentOfTotal, mTotalPower, mConsumePower,
+                        mPercentOfTotal, mTotalPower, mConsumePower,
-                  Duration.ofMillis(mForegroundUsageTimeInMs).getSeconds(),
+                        Duration.ofMillis(mForegroundUsageTimeInMs).getSeconds(),
-                  Duration.ofMillis(mBackgroundUsageTimeInMs).getSeconds()))
+                        Duration.ofMillis(mBackgroundUsageTimeInMs).getSeconds()))
-            .append(String.format("\n\tdrainType=%d|consumerType=%d",
+                .append(String.format("\n\tdrainType=%d|consumerType=%d",
-                  mDrainType, mConsumerType))
+                        mDrainType, mConsumerType))
-            .append(String.format("\n\tbattery=%d|status=%d|health=%d\n}",
+                .append(String.format("\n\tbattery=%d|status=%d|health=%d\n}",
-                  mBatteryLevel, mBatteryStatus, mBatteryHealth));
+                        mBatteryLevel, mBatteryStatus, mBatteryHealth));
         return builder.toString();
     }
 
     private int getInteger(ContentValues values, String key) {
         if (values != null && values.containsKey(key)) {
             return values.getAsInteger(key);
-        };
+        }
         mIsValidEntry = false;
         return 0;
     }
@@ -298,21 +300,21 @@ public class BatteryHistEntry {
             BatteryHistEntry lowerHistEntry,
             BatteryHistEntry upperHistEntry) {
         final double totalPower = interpolate(
-            lowerHistEntry == null ? 0 : lowerHistEntry.mTotalPower,
+                lowerHistEntry == null ? 0 : lowerHistEntry.mTotalPower,
-            upperHistEntry.mTotalPower,
+                upperHistEntry.mTotalPower,
-            ratio);
+                ratio);
         final double consumePower = interpolate(
-            lowerHistEntry == null ? 0 : lowerHistEntry.mConsumePower,
+                lowerHistEntry == null ? 0 : lowerHistEntry.mConsumePower,
-            upperHistEntry.mConsumePower,
+                upperHistEntry.mConsumePower,
-            ratio);
+                ratio);
         final double foregroundUsageTimeInMs = interpolate(
-            lowerHistEntry == null ? 0 : lowerHistEntry.mForegroundUsageTimeInMs,
+                lowerHistEntry == null ? 0 : lowerHistEntry.mForegroundUsageTimeInMs,
-            upperHistEntry.mForegroundUsageTimeInMs,
+                upperHistEntry.mForegroundUsageTimeInMs,
-            ratio);
+                ratio);
         final double backgroundUsageTimeInMs = interpolate(
-            lowerHistEntry == null ? 0 : lowerHistEntry.mBackgroundUsageTimeInMs,
+                lowerHistEntry == null ? 0 : lowerHistEntry.mBackgroundUsageTimeInMs,
-            upperHistEntry.mBackgroundUsageTimeInMs,
+                upperHistEntry.mBackgroundUsageTimeInMs,
-            ratio);
+                ratio);
         // Checks whether there is any abnoaml cases!
         if (upperHistEntry.mConsumePower < consumePower
                 || upperHistEntry.mForegroundUsageTimeInMs < foregroundUsageTimeInMs
@@ -324,22 +326,22 @@ public class BatteryHistEntry {
             }
         }
         final double batteryLevel =
-            lowerHistEntry == null
+                lowerHistEntry == null
-                ? upperHistEntry.mBatteryLevel
+                        ? upperHistEntry.mBatteryLevel
-                : interpolate(
+                        : interpolate(
-                    lowerHistEntry.mBatteryLevel,
+                                lowerHistEntry.mBatteryLevel,
-                    upperHistEntry.mBatteryLevel,
+                                upperHistEntry.mBatteryLevel,
-                    ratio);
+                                ratio);
         return new BatteryHistEntry(
-            upperHistEntry,
+                upperHistEntry,
-            /*bootTimestamp=*/ upperHistEntry.mBootTimestamp
+                /*bootTimestamp=*/ upperHistEntry.mBootTimestamp
                 - (upperTimestamp - slotTimestamp),
-            /*timestamp=*/ slotTimestamp,
+                /*timestamp=*/ slotTimestamp,
-            totalPower,
+                totalPower,
-            consumePower,
+                consumePower,
-            Math.round(foregroundUsageTimeInMs),
+                Math.round(foregroundUsageTimeInMs),
-            Math.round(backgroundUsageTimeInMs),
+                Math.round(backgroundUsageTimeInMs),
-            (int) Math.round(batteryLevel));
+                (int) Math.round(batteryLevel));
     }
 
     private static double interpolate(double v1, double v2, double ratio) {

src/com/android/settings/fuelgauge/batteryusage/BatteryHistoryLoader.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -13,10 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import android.content.Context;
 
+import com.android.settings.fuelgauge.PowerUsageFeatureProvider;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settingslib.utils.AsyncLoaderCompat;
 
@@ -41,7 +42,7 @@ public class BatteryHistoryLoader
     @Override
     public Map<Long, Map<String, BatteryHistEntry>> loadInBackground() {
         final PowerUsageFeatureProvider powerUsageFeatureProvider =
-            FeatureFactory.getFactory(mContext).getPowerUsageFeatureProvider(mContext);
+                FeatureFactory.getFactory(mContext).getPowerUsageFeatureProvider(mContext);
         return powerUsageFeatureProvider.getBatteryHistory(mContext);
     }
 }

src/com/android/settings/fuelgauge/batteryusage/BatteryHistoryPreference.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2010 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import android.content.Context;
 import android.os.BatteryUsageStats;
@@ -29,6 +29,8 @@ import androidx.preference.Preference;
 import androidx.preference.PreferenceViewHolder;
 
 import com.android.settings.R;
+import com.android.settings.fuelgauge.BatteryInfo;
+import com.android.settings.fuelgauge.BatteryUtils;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settings.widget.UsageView;
 
@@ -38,8 +40,10 @@ import com.android.settings.widget.UsageView;
 public class BatteryHistoryPreference extends Preference {
     private static final String TAG = "BatteryHistoryPreference";
 
-    @VisibleForTesting boolean mHideSummary;
+    @VisibleForTesting
-    @VisibleForTesting BatteryInfo mBatteryInfo;
+    boolean mHideSummary;
+    @VisibleForTesting
+    BatteryInfo mBatteryInfo;
 
     private boolean mIsChartGraphEnabled;
 
@@ -51,16 +55,17 @@ public class BatteryHistoryPreference extends Preference {
     public BatteryHistoryPreference(Context context, AttributeSet attrs) {
         super(context, attrs);
         mIsChartGraphEnabled =
-            FeatureFactory.getFactory(context).getPowerUsageFeatureProvider(context)
+                FeatureFactory.getFactory(context).getPowerUsageFeatureProvider(context)
-                   .isChartGraphEnabled(context);
+                        .isChartGraphEnabled(context);
         Log.i(TAG, "isChartGraphEnabled: " + mIsChartGraphEnabled);
         setLayoutResource(
-            mIsChartGraphEnabled
+                mIsChartGraphEnabled
-                ? R.layout.battery_chart_graph
+                        ? R.layout.battery_chart_graph
-                : R.layout.battery_usage_graph);
+                        : R.layout.battery_usage_graph);
         setSelectable(false);
     }
 
+    /** Sets the text of bottom summary. */
     public void setBottomSummary(CharSequence text) {
         mSummaryContent = text;
         if (mSummaryView != null) {
@@ -70,6 +75,7 @@ public class BatteryHistoryPreference extends Preference {
         mHideSummary = false;
     }
 
+    /** Hides the bottom summary. */
     public void hideBottomSummary() {
         if (mSummaryView != null) {
             mSummaryView.setVisibility(View.GONE);
@@ -101,7 +107,7 @@ public class BatteryHistoryPreference extends Preference {
         if (mIsChartGraphEnabled) {
             mBatteryChartView = (BatteryChartView) view.findViewById(R.id.battery_chart);
             mBatteryChartView.setCompanionTextView(
-                (TextView) view.findViewById(R.id.companion_text));
+                    (TextView) view.findViewById(R.id.companion_text));
             if (mChartPreferenceController != null) {
                 mChartPreferenceController.setBatteryChartView(mBatteryChartView);
             }

src/com/android/settings/fuelgauge/batteryusage/BatteryUsageStatsLoader.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2020 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import android.content.Context;
 import android.os.BatteryStatsManager;

src/com/android/settings/fuelgauge/batteryusage/ConvertUtils.java

@@ -1,17 +1,19 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 The Android Open Source Project
  *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
+ * Licensed under the Apache License, Version 2.0 (the "License");
- * except in compliance with the License. You may obtain a copy of the License at
+ * 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
+ * Unless required by applicable law or agreed to in writing, software
- * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * distributed under the License is distributed on an "AS IS" BASIS,
- * KIND, either express or implied. See the License for the specific language governing
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * permissions and limitations under the License.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import android.annotation.IntDef;
 import android.content.ContentValues;
@@ -46,7 +48,7 @@ public final class ConvertUtils {
     private static final String TAG = "ConvertUtils";
     private static final Map<String, BatteryHistEntry> EMPTY_BATTERY_MAP = new HashMap<>();
     private static final BatteryHistEntry EMPTY_BATTERY_HIST_ENTRY =
-        new BatteryHistEntry(new ContentValues());
+            new BatteryHistEntry(new ContentValues());
     // Maximum total time value for each slot cumulative data at most 2 hours.
     private static final float TOTAL_TIME_THRESHOLD = DateUtils.HOUR_IN_MILLIS * 2;
 
@@ -64,21 +66,24 @@ public final class ConvertUtils {
     public static final String FAKE_PACKAGE_NAME = "fake_package";
 
     @IntDef(prefix = {"CONSUMER_TYPE"}, value = {
-        CONSUMER_TYPE_UNKNOWN,
+            CONSUMER_TYPE_UNKNOWN,
-        CONSUMER_TYPE_UID_BATTERY,
+            CONSUMER_TYPE_UID_BATTERY,
-        CONSUMER_TYPE_USER_BATTERY,
+            CONSUMER_TYPE_USER_BATTERY,
-        CONSUMER_TYPE_SYSTEM_BATTERY,
+            CONSUMER_TYPE_SYSTEM_BATTERY,
     })
     @Retention(RetentionPolicy.SOURCE)
-    public static @interface ConsumerType {}
+    public static @interface ConsumerType {
+    }
 
     public static final int CONSUMER_TYPE_UNKNOWN = 0;
     public static final int CONSUMER_TYPE_UID_BATTERY = 1;
     public static final int CONSUMER_TYPE_USER_BATTERY = 2;
     public static final int CONSUMER_TYPE_SYSTEM_BATTERY = 3;
 
-    private ConvertUtils() {}
+    private ConvertUtils() {
+    }
 
+    /** Converts to content values */
     public static ContentValues convert(
             BatteryEntry entry,
             BatteryUsageStats batteryUsageStats,
@@ -91,25 +96,25 @@ public final class ConvertUtils {
         if (entry != null && batteryUsageStats != null) {
             values.put(BatteryHistEntry.KEY_UID, Long.valueOf(entry.getUid()));
             values.put(BatteryHistEntry.KEY_USER_ID,
-                Long.valueOf(UserHandle.getUserId(entry.getUid())));
+                    Long.valueOf(UserHandle.getUserId(entry.getUid())));
             values.put(BatteryHistEntry.KEY_APP_LABEL, entry.getLabel());
             values.put(BatteryHistEntry.KEY_PACKAGE_NAME,
-                entry.getDefaultPackageName());
+                    entry.getDefaultPackageName());
             values.put(BatteryHistEntry.KEY_IS_HIDDEN, Boolean.valueOf(entry.isHidden()));
             values.put(BatteryHistEntry.KEY_TOTAL_POWER,
-                Double.valueOf(batteryUsageStats.getConsumedPower()));
+                    Double.valueOf(batteryUsageStats.getConsumedPower()));
             values.put(BatteryHistEntry.KEY_CONSUME_POWER,
-                Double.valueOf(entry.getConsumedPower()));
+                    Double.valueOf(entry.getConsumedPower()));
             values.put(BatteryHistEntry.KEY_PERCENT_OF_TOTAL,
-                Double.valueOf(entry.mPercent));
+                    Double.valueOf(entry.mPercent));
             values.put(BatteryHistEntry.KEY_FOREGROUND_USAGE_TIME,
-                Long.valueOf(entry.getTimeInForegroundMs()));
+                    Long.valueOf(entry.getTimeInForegroundMs()));
             values.put(BatteryHistEntry.KEY_BACKGROUND_USAGE_TIME,
-                Long.valueOf(entry.getTimeInBackgroundMs()));
+                    Long.valueOf(entry.getTimeInBackgroundMs()));
             values.put(BatteryHistEntry.KEY_DRAIN_TYPE,
-                Integer.valueOf(entry.getPowerComponentId()));
+                    Integer.valueOf(entry.getPowerComponentId()));
             values.put(BatteryHistEntry.KEY_CONSUMER_TYPE,
-                Integer.valueOf(entry.getConsumerType()));
+                    Integer.valueOf(entry.getConsumerType()));
         } else {
             values.put(BatteryHistEntry.KEY_PACKAGE_NAME, FAKE_PACKAGE_NAME);
         }
@@ -126,7 +131,7 @@ public final class ConvertUtils {
     public static String utcToLocalTime(Context context, long timestamp) {
         final Locale locale = getLocale(context);
         final String pattern =
-            DateFormat.getBestDateTimePattern(locale, "MMM dd,yyyy HH:mm:ss");
+                DateFormat.getBestDateTimePattern(locale, "MMM dd,yyyy HH:mm:ss");
         return DateFormat.format(pattern, timestamp).toString();
     }
 
@@ -159,18 +164,18 @@ public final class ConvertUtils {
         final int timestampStride = 2;
         for (int index = 0; index < timeSlotSize; index++) {
             final Long currentTimestamp =
-                Long.valueOf(batteryHistoryKeys[index * timestampStride]);
+                    Long.valueOf(batteryHistoryKeys[index * timestampStride]);
             final Long nextTimestamp =
-                Long.valueOf(batteryHistoryKeys[index * timestampStride + 1]);
+                    Long.valueOf(batteryHistoryKeys[index * timestampStride + 1]);
             final Long nextTwoTimestamp =
-                Long.valueOf(batteryHistoryKeys[index * timestampStride + 2]);
+                    Long.valueOf(batteryHistoryKeys[index * timestampStride + 2]);
             // Fetches BatteryHistEntry data from corresponding time slot.
             final Map<String, BatteryHistEntry> currentBatteryHistMap =
-                batteryHistoryMap.getOrDefault(currentTimestamp, EMPTY_BATTERY_MAP);
+                    batteryHistoryMap.getOrDefault(currentTimestamp, EMPTY_BATTERY_MAP);
             final Map<String, BatteryHistEntry> nextBatteryHistMap =
-                batteryHistoryMap.getOrDefault(nextTimestamp, EMPTY_BATTERY_MAP);
+                    batteryHistoryMap.getOrDefault(nextTimestamp, EMPTY_BATTERY_MAP);
             final Map<String, BatteryHistEntry> nextTwoBatteryHistMap =
-                batteryHistoryMap.getOrDefault(nextTwoTimestamp, EMPTY_BATTERY_MAP);
+                    batteryHistoryMap.getOrDefault(nextTwoTimestamp, EMPTY_BATTERY_MAP);
             // We should not get the empty list since we have at least one fake data to record
             // the battery level and status in each time slot, the empty list is used to
             // represent there is no enough data to apply interpolation arithmetic.
@@ -195,27 +200,27 @@ public final class ConvertUtils {
             // Calculates all packages diff usage data in a specific time slot.
             for (String key : allBatteryHistEntryKeys) {
                 final BatteryHistEntry currentEntry =
-                    currentBatteryHistMap.getOrDefault(key, EMPTY_BATTERY_HIST_ENTRY);
+                        currentBatteryHistMap.getOrDefault(key, EMPTY_BATTERY_HIST_ENTRY);
                 final BatteryHistEntry nextEntry =
-                    nextBatteryHistMap.getOrDefault(key, EMPTY_BATTERY_HIST_ENTRY);
+                        nextBatteryHistMap.getOrDefault(key, EMPTY_BATTERY_HIST_ENTRY);
                 final BatteryHistEntry nextTwoEntry =
-                    nextTwoBatteryHistMap.getOrDefault(key, EMPTY_BATTERY_HIST_ENTRY);
+                        nextTwoBatteryHistMap.getOrDefault(key, EMPTY_BATTERY_HIST_ENTRY);
                 // Cumulative values is a specific time slot for a specific app.
                 long foregroundUsageTimeInMs =
-                    getDiffValue(
+                        getDiffValue(
-                        currentEntry.mForegroundUsageTimeInMs,
+                                currentEntry.mForegroundUsageTimeInMs,
-                        nextEntry.mForegroundUsageTimeInMs,
+                                nextEntry.mForegroundUsageTimeInMs,
-                        nextTwoEntry.mForegroundUsageTimeInMs);
+                                nextTwoEntry.mForegroundUsageTimeInMs);
                 long backgroundUsageTimeInMs =
-                    getDiffValue(
+                        getDiffValue(
-                        currentEntry.mBackgroundUsageTimeInMs,
+                                currentEntry.mBackgroundUsageTimeInMs,
-                        nextEntry.mBackgroundUsageTimeInMs,
+                                nextEntry.mBackgroundUsageTimeInMs,
-                        nextTwoEntry.mBackgroundUsageTimeInMs);
+                                nextTwoEntry.mBackgroundUsageTimeInMs);
                 double consumePower =
-                    getDiffValue(
+                        getDiffValue(
-                        currentEntry.mConsumePower,
+                                currentEntry.mConsumePower,
-                        nextEntry.mConsumePower,
+                                nextEntry.mConsumePower,
-                        nextTwoEntry.mConsumePower);
+                                nextTwoEntry.mConsumePower);
                 // Excludes entry since we don't have enough data to calculate.
                 if (foregroundUsageTimeInMs == 0
                         && backgroundUsageTimeInMs == 0
@@ -223,14 +228,14 @@ public final class ConvertUtils {
                     continue;
                 }
                 final BatteryHistEntry selectedBatteryEntry =
-                    selectBatteryHistEntry(currentEntry, nextEntry, nextTwoEntry);
+                        selectBatteryHistEntry(currentEntry, nextEntry, nextTwoEntry);
                 if (selectedBatteryEntry == null) {
                     continue;
                 }
                 // Forces refine the cumulative value since it may introduce deviation
                 // error since we will apply the interpolation arithmetic.
                 final float totalUsageTimeInMs =
-                    foregroundUsageTimeInMs + backgroundUsageTimeInMs;
+                        foregroundUsageTimeInMs + backgroundUsageTimeInMs;
                 if (totalUsageTimeInMs > TOTAL_TIME_THRESHOLD) {
                     final float ratio = TOTAL_TIME_THRESHOLD / totalUsageTimeInMs;
                     if (DEBUG) {
@@ -240,19 +245,19 @@ public final class ConvertUtils {
                                 currentEntry));
                     }
                     foregroundUsageTimeInMs =
-                        Math.round(foregroundUsageTimeInMs * ratio);
+                            Math.round(foregroundUsageTimeInMs * ratio);
                     backgroundUsageTimeInMs =
-                        Math.round(backgroundUsageTimeInMs * ratio);
+                            Math.round(backgroundUsageTimeInMs * ratio);
                     consumePower = consumePower * ratio;
                 }
                 totalConsumePower += consumePower;
                 batteryDiffEntryList.add(
-                    new BatteryDiffEntry(
+                        new BatteryDiffEntry(
-                        context,
+                                context,
-                        foregroundUsageTimeInMs,
+                                foregroundUsageTimeInMs,
-                        backgroundUsageTimeInMs,
+                                backgroundUsageTimeInMs,
-                        consumePower,
+                                consumePower,
-                        selectedBatteryEntry));
+                                selectedBatteryEntry));
             }
             // Sets total consume power data into all BatteryDiffEntry in the same slot.
             for (BatteryDiffEntry diffEntry : batteryDiffEntryList) {
@@ -282,9 +287,9 @@ public final class ConvertUtils {
                 } else {
                     // Sums up some fields data into the existing one.
                     oldBatteryDiffEntry.mForegroundUsageTimeInMs +=
-                        entry.mForegroundUsageTimeInMs;
+                            entry.mForegroundUsageTimeInMs;
                     oldBatteryDiffEntry.mBackgroundUsageTimeInMs +=
-                        entry.mBackgroundUsageTimeInMs;
+                            entry.mBackgroundUsageTimeInMs;
                     oldBatteryDiffEntry.mConsumePower += entry.mConsumePower;
                 }
                 totalConsumePower += entry.mConsumePower;
@@ -318,7 +323,7 @@ public final class ConvertUtils {
                 if (packageName != null
                         && !backgroundUsageTimeHideList.isEmpty()
                         && backgroundUsageTimeHideList.contains(packageName)) {
-                  entry.mBackgroundUsageTimeInMs = 0;
+                    entry.mBackgroundUsageTimeInMs = 0;
                 }
             }
         }
@@ -342,7 +347,7 @@ public final class ConvertUtils {
             return entry2;
         } else {
             return entry3 != null && entry3 != EMPTY_BATTERY_HIST_ENTRY
-                ? entry3 : null;
+                    ? entry3 : null;
         }
     }
 
@@ -352,8 +357,8 @@ public final class ConvertUtils {
             return Locale.getDefault();
         }
         final LocaleList locales =
-            context.getResources().getConfiguration().getLocales();
+                context.getResources().getConfiguration().getLocales();
         return locales != null && !locales.isEmpty() ? locales.get(0)
-            : Locale.getDefault();
+                : Locale.getDefault();
     }
 }

src/com/android/settings/fuelgauge/batteryusage/ExpandDividerPreference.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -13,11 +13,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import android.content.Context;
 import android.util.AttributeSet;
-import android.view.View;
 import android.widget.ImageView;
 import android.widget.TextView;
 
@@ -33,8 +32,10 @@ public class ExpandDividerPreference extends Preference {
     @VisibleForTesting
     static final String PREFERENCE_KEY = "expandable_divider";
 
-    @VisibleForTesting TextView mTextView;
+    @VisibleForTesting
-    @VisibleForTesting ImageView mImageView;
+    TextView mTextView;
+    @VisibleForTesting
+    ImageView mImageView;
     private OnExpandListener mOnExpandListener;
 
     private boolean mIsExpanded = false;
@@ -42,6 +43,7 @@ public class ExpandDividerPreference extends Preference {
 
     /** A callback listener for expand state is changed by users. */
     public interface OnExpandListener {
+        /** Callback function for expand state is changed by users. */
         void onExpand(boolean isExpanded);
     }
 

src/com/android/settings/fuelgauge/batteryusage/PowerGaugePreference.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import android.content.Context;
 import android.graphics.drawable.Drawable;
@@ -67,34 +67,41 @@ public class PowerGaugePreference extends AppPreference {
         mShowAnomalyIcon = false;
     }
 
+    /** Sets the content description. */
     public void setContentDescription(String name) {
         mContentDescription = name;
         notifyChanged();
     }
 
+    /** Sets the percent of total. */
     public void setPercent(double percentOfTotal) {
         mProgress = Utils.formatPercentage(percentOfTotal, true);
         notifyChanged();
     }
 
+    /** Gets the percent of total. */
     public String getPercent() {
         return mProgress.toString();
     }
 
+    /** Sets the subtitle. */
     public void setSubtitle(CharSequence subtitle) {
         mProgress = subtitle;
         notifyChanged();
     }
 
+    /** Gets the subtitle. */
     public CharSequence getSubtitle() {
         return mProgress;
     }
 
+    /** Sets whether to show anomaly icon */
     public void shouldShowAnomalyIcon(boolean showAnomalyIcon) {
         mShowAnomalyIcon = showAnomalyIcon;
         notifyChanged();
     }
 
+    /** Gets whether to show anomaly icon */
     public boolean showAnomalyIcon() {
         return mShowAnomalyIcon;
     }

src/com/android/settings/fuelgauge/batteryusage/PowerUsageAdvanced.java

@@ -1,17 +1,19 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * Copyright (C) 2022 The Android Open Source Project
  *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
+ * Licensed under the Apache License, Version 2.0 (the "License");
- * except in compliance with the License. You may obtain a copy of the License at
+ * 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
+ * Unless required by applicable law or agreed to in writing, software
- * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * distributed under the License is distributed on an "AS IS" BASIS,
- * KIND, either express or implied. See the License for the specific language governing
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * permissions and limitations under the License.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.android.settings.fuelgauge.BatteryBroadcastReceiver.BatteryUpdateType;
 
@@ -35,6 +37,7 @@ import androidx.loader.content.Loader;
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
 import com.android.settings.fuelgauge.BatteryBroadcastReceiver;
+import com.android.settings.fuelgauge.PowerUsageFeatureProvider;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settingslib.core.AbstractPreferenceController;
@@ -45,6 +48,7 @@ import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 
+/** Advanced power usage. */
 @SearchIndexable(forTarget = SearchIndexable.ALL & ~SearchIndexable.ARC)
 public class PowerUsageAdvanced extends PowerUsageBase {
     private static final String TAG = "AdvancedBatteryUsage";
@@ -69,14 +73,14 @@ public class PowerUsageAdvanced extends PowerUsageBase {
 
     private final ContentObserver mBatteryObserver =
             new ContentObserver(new Handler()) {
-            @Override
+                @Override
-            public void onChange(boolean selfChange) {
+                public void onChange(boolean selfChange) {
-                Log.d(TAG, "onBatteryContentChange: " + selfChange);
+                    Log.d(TAG, "onBatteryContentChange: " + selfChange);
-                mIsChartDataLoaded = false;
+                    mIsChartDataLoaded = false;
-                restartBatteryStatsLoader(
+                    restartBatteryStatsLoader(
-                        BatteryBroadcastReceiver.BatteryUpdateType.MANUAL);
+                            BatteryBroadcastReceiver.BatteryUpdateType.MANUAL);
-            }
+                }
-    };
+            };
 
     @Override
     public void onCreate(Bundle icicle) {
@@ -87,7 +91,7 @@ public class PowerUsageAdvanced extends PowerUsageBase {
         if (mIsChartGraphEnabled) {
             setBatteryChartPreferenceController();
         } else {
-           updateHistPrefSummary(context);
+            updateHistPrefSummary(context);
         }
     }
 
@@ -143,13 +147,13 @@ public class PowerUsageAdvanced extends PowerUsageBase {
         if (mIsChartGraphEnabled) {
             mBatteryChartPreferenceController =
                     new BatteryChartPreferenceController(context, KEY_APP_LIST,
-                        getSettingsLifecycle(), (SettingsActivity) getActivity(), this);
+                            getSettingsLifecycle(), (SettingsActivity) getActivity(), this);
             controllers.add(mBatteryChartPreferenceController);
             setBatteryChartPreferenceController();
         } else {
             mBatteryAppListPreferenceController =
                     new BatteryAppListPreferenceController(context, KEY_APP_LIST,
-                        getSettingsLifecycle(), (SettingsActivity) getActivity(), this);
+                            getSettingsLifecycle(), (SettingsActivity) getActivity(), this);
             controllers.add(mBatteryAppListPreferenceController);
         }
         return controllers;
@@ -185,7 +189,7 @@ public class PowerUsageAdvanced extends PowerUsageBase {
         if (mIsChartGraphEnabled && !mIsChartDataLoaded) {
             mIsChartDataLoaded = true;
             getLoaderManager().restartLoader(LOADER_BATTERY_USAGE_STATS, bundle,
-                mBatteryHistoryLoaderCallbacks);
+                    mBatteryHistoryLoaderCallbacks);
         } else if (!mIsChartGraphEnabled) {
             super.restartBatteryStatsLoader(refreshType);
         }

src/com/android/settings/fuelgauge/batteryusage/PowerUsageBase.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2015 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.android.settings.fuelgauge.BatteryBroadcastReceiver.BatteryUpdateType;
 
@@ -23,7 +23,6 @@ import android.os.BatteryUsageStats;
 import android.os.Bundle;
 import android.os.UserManager;
 import android.util.Log;
-import android.view.Menu;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.VisibleForTesting;
@@ -31,6 +30,8 @@ import androidx.loader.app.LoaderManager;
 import androidx.loader.content.Loader;
 
 import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.fuelgauge.BatteryBroadcastReceiver;
+import com.android.settings.fuelgauge.BatteryUtils;
 
 /**
  * Common base class for things that need to show the battery usage graph.
@@ -99,6 +100,7 @@ public abstract class PowerUsageBase extends DashboardFragment {
     }
 
     protected abstract void refreshUi(@BatteryUpdateType int refreshType);
+
     protected abstract boolean isBatteryHistoryNeeded();
 
     protected void updatePreference(BatteryHistoryPreference historyPref) {

src/com/android/settings/fuelgauge/batteryusage/PowerUsageSummary.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.android.settings.fuelgauge.BatteryBroadcastReceiver.BatteryUpdateType;
 
@@ -34,6 +34,11 @@ import androidx.preference.Preference;
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
 import com.android.settings.Utils;
+import com.android.settings.fuelgauge.BatteryHeaderPreferenceController;
+import com.android.settings.fuelgauge.BatteryInfo;
+import com.android.settings.fuelgauge.BatteryInfoLoader;
+import com.android.settings.fuelgauge.BatteryUtils;
+import com.android.settings.fuelgauge.PowerUsageFeatureProvider;
 import com.android.settings.fuelgauge.batterytip.BatteryTipLoader;
 import com.android.settings.fuelgauge.batterytip.BatteryTipPreferenceController;
 import com.android.settings.fuelgauge.batterytip.tips.BatteryTip;
@@ -255,9 +260,9 @@ public class PowerUsageSummary extends PowerUsageBase implements
     void initPreference() {
         mBatteryUsagePreference = findPreference(KEY_BATTERY_USAGE);
         mBatteryUsagePreference.setSummary(
-                mPowerFeatureProvider.isChartGraphEnabled(getContext()) ?
+                mPowerFeatureProvider.isChartGraphEnabled(getContext())
-                        getString(R.string.advanced_battery_preference_summary_with_hours) :
+                        ? getString(R.string.advanced_battery_preference_summary_with_hours)
-                        getString(R.string.advanced_battery_preference_summary));
+                        : getString(R.string.advanced_battery_preference_summary));
 
         mHelpPreference = findPreference(KEY_BATTERY_ERROR);
         mHelpPreference.setVisible(false);

src/com/android/settings/homepage/contextualcards/slices/BatteryFixSlice.java

@@ -44,11 +44,11 @@ import androidx.slice.builders.SliceAction;
 import com.android.settings.R;
 import com.android.settings.SubSettings;
 import com.android.settings.Utils;
-import com.android.settings.fuelgauge.BatteryUsageStatsLoader;
-import com.android.settings.fuelgauge.PowerUsageSummary;
 import com.android.settings.fuelgauge.batterytip.BatteryTipLoader;
 import com.android.settings.fuelgauge.batterytip.BatteryTipPreferenceController;
 import com.android.settings.fuelgauge.batterytip.tips.BatteryTip;
+import com.android.settings.fuelgauge.batteryusage.BatteryUsageStatsLoader;
+import com.android.settings.fuelgauge.batteryusage.PowerUsageSummary;
 import com.android.settings.slices.CustomSliceable;
 import com.android.settings.slices.SliceBackgroundWorker;
 import com.android.settings.slices.SliceBuilderUtils;

src/com/android/settings/search/CustomSiteMapRegistry.java

@@ -21,8 +21,8 @@ import android.util.ArrayMap;
 import com.android.settings.backup.UserBackupSettingsActivity;
 import com.android.settings.connecteddevice.ConnectedDeviceDashboardFragment;
 import com.android.settings.connecteddevice.usb.UsbDetailsFragment;
-import com.android.settings.fuelgauge.PowerUsageAdvanced;
+import com.android.settings.fuelgauge.batteryusage.PowerUsageAdvanced;
-import com.android.settings.fuelgauge.PowerUsageSummary;
+import com.android.settings.fuelgauge.batteryusage.PowerUsageSummary;
 import com.android.settings.gestures.GestureNavigationSettingsFragment;
 import com.android.settings.gestures.SystemNavigationGestureSettings;
 import com.android.settings.location.LocationSettings;

tests/robotests/src/com/android/settings/applications/appinfo/AppBatteryPreferenceControllerTest.java

@@ -40,8 +40,8 @@ import androidx.preference.Preference;
 import androidx.preference.PreferenceScreen;
 
 import com.android.settings.SettingsActivity;
-import com.android.settings.fuelgauge.BatteryDiffEntry;
 import com.android.settings.fuelgauge.BatteryUtils;
+import com.android.settings.fuelgauge.batteryusage.BatteryDiffEntry;
 import com.android.settingslib.applications.ApplicationsState;
 
 import org.junit.Before;

tests/robotests/src/com/android/settings/fuelgauge/AdvancedPowerUsageDetailTest.java

@@ -45,7 +45,6 @@ import android.os.BatteryStats;
 import android.os.Bundle;
 import android.os.Process;
 import android.os.UserHandle;
-import android.util.Pair;
 
 import androidx.fragment.app.FragmentActivity;
 import androidx.loader.app.LoaderManager;
@@ -54,6 +53,7 @@ import androidx.recyclerview.widget.RecyclerView;
 
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
+import com.android.settings.fuelgauge.batteryusage.BatteryEntry;
 import com.android.settings.testutils.FakeFeatureFactory;
 import com.android.settings.testutils.shadow.ShadowActivityManager;
 import com.android.settings.testutils.shadow.ShadowEntityHeaderController;

tests/robotests/src/com/android/settings/fuelgauge/PowerUsageFeatureProviderImplTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * Copyright (C) 2022 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.

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BatteryAppListPreferenceControllerTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.google.common.truth.Truth.assertThat;
 
@@ -35,6 +35,7 @@ import androidx.preference.PreferenceGroup;
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
 import com.android.settings.core.InstrumentedPreferenceFragment;
+import com.android.settings.fuelgauge.BatteryUtils;
 import com.android.settings.testutils.FakeFeatureFactory;
 
 import org.junit.Before;
@@ -81,9 +82,9 @@ public class BatteryAppListPreferenceControllerTest {
         when(mContext.getPackageManager()).thenReturn(mPackageManager);
         when(mContext.getApplicationContext()).thenReturn(mContext);
         when(mContext.getSystemService(UserManager.class)).thenReturn(mUserManager);
-        when(mUserManager.getProfileIdsWithDisabled(anyInt())).thenReturn(new int[] {});
+        when(mUserManager.getProfileIdsWithDisabled(anyInt())).thenReturn(new int[]{});
         when(mFeatureFactory.powerUsageFeatureProvider.getHideApplicationSummary(mContext))
-                .thenReturn(new String[] {"com.android.googlequicksearchbox"});
+                .thenReturn(new String[]{"com.android.googlequicksearchbox"});
 
         mPreference = new PowerGaugePreference(mContext);
 

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BatteryChartPreferenceControllerTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -14,22 +14,20 @@
  * limitations under the License.
  */
 
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.google.common.truth.Truth.assertThat;
 
 import static org.mockito.ArgumentMatchers.any;
-import static org.mockito.Matchers.anyInt;
 import static org.mockito.Matchers.anyLong;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
 
 import android.app.settings.SettingsEnums;
-import android.content.Context;
 import android.content.ContentValues;
+import android.content.Context;
 import android.content.pm.PackageManager;
 import android.content.res.Configuration;
 import android.content.res.Resources;
@@ -37,15 +35,14 @@ import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.os.LocaleList;
 import android.text.format.DateUtils;
-import android.util.Pair;
 
 import androidx.preference.Preference;
 import androidx.preference.PreferenceCategory;
 import androidx.preference.PreferenceGroup;
 
-import com.android.settings.R;
 import com.android.settings.SettingsActivity;
 import com.android.settings.core.InstrumentedPreferenceFragment;
+import com.android.settings.fuelgauge.BatteryUtils;
 import com.android.settings.testutils.FakeFeatureFactory;
 import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
 
@@ -58,11 +55,10 @@ import org.mockito.MockitoAnnotations;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
 
-import java.util.Arrays;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.Locale;
-import java.util.List;
 import java.util.Map;
 
 @RunWith(RobolectricTestRunner.class)
@@ -70,20 +66,24 @@ public final class BatteryChartPreferenceControllerTest {
     private static final String PREF_KEY = "pref_key";
     private static final String PREF_SUMMARY = "fake preference summary";
     private static final int DESIRED_HISTORY_SIZE =
-        BatteryChartPreferenceController.DESIRED_HISTORY_SIZE;
+            BatteryChartPreferenceController.DESIRED_HISTORY_SIZE;
 
-    @Mock private InstrumentedPreferenceFragment mFragment;
+    @Mock
-    @Mock private SettingsActivity mSettingsActivity;
+    private InstrumentedPreferenceFragment mFragment;
-    @Mock private PreferenceGroup mAppListGroup;
+    @Mock
-    @Mock private PackageManager mPackageManager;
+    private SettingsActivity mSettingsActivity;
-    @Mock private Drawable mDrawable;
+    @Mock
-    @Mock private BatteryHistEntry mBatteryHistEntry;
+    private PreferenceGroup mAppListGroup;
-    @Mock private BatteryChartView mBatteryChartView;
+    @Mock
-    @Mock private PowerGaugePreference mPowerGaugePreference;
+    private Drawable mDrawable;
-    @Mock private ExpandDividerPreference mExpandDividerPreference;
+    @Mock
-    @Mock private BatteryUtils mBatteryUtils;
+    private BatteryHistEntry mBatteryHistEntry;
-    @Mock private Configuration mConfiguration;
+    @Mock
-    @Mock private Resources mResources;
+    private BatteryChartView mBatteryChartView;
+    @Mock
+    private PowerGaugePreference mPowerGaugePreference;
+    @Mock
+    private BatteryUtils mBatteryUtils;
 
     private Context mContext;
     private FakeFeatureFactory mFeatureFactory;
@@ -102,29 +102,29 @@ public final class BatteryChartPreferenceControllerTest {
         final Resources resources = spy(mContext.getResources());
         resources.getConfiguration().setLocales(new LocaleList(new Locale("en_US")));
         doReturn(resources).when(mContext).getResources();
-        doReturn(new String[] {"com.android.googlequicksearchbox"})
+        doReturn(new String[]{"com.android.googlequicksearchbox"})
-            .when(mFeatureFactory.powerUsageFeatureProvider)
+                .when(mFeatureFactory.powerUsageFeatureProvider)
-            .getHideApplicationSummary(mContext);
+                .getHideApplicationSummary(mContext);
-        doReturn(new String[] {"com.android.gms.persistent"})
+        doReturn(new String[]{"com.android.gms.persistent"})
-            .when(mFeatureFactory.powerUsageFeatureProvider)
+                .when(mFeatureFactory.powerUsageFeatureProvider)
-            .getHideApplicationEntries(mContext);
+                .getHideApplicationEntries(mContext);
         mBatteryChartPreferenceController = createController();
         mBatteryChartPreferenceController.mPrefContext = mContext;
         mBatteryChartPreferenceController.mAppListPrefGroup = mAppListGroup;
         mBatteryChartPreferenceController.mBatteryChartView = mBatteryChartView;
         mBatteryDiffEntry = new BatteryDiffEntry(
-            mContext,
+                mContext,
-            /*foregroundUsageTimeInMs=*/ 1,
+                /*foregroundUsageTimeInMs=*/ 1,
-            /*backgroundUsageTimeInMs=*/ 2,
+                /*backgroundUsageTimeInMs=*/ 2,
-            /*consumePower=*/ 3,
+                /*consumePower=*/ 3,
-            mBatteryHistEntry);
+                mBatteryHistEntry);
         mBatteryDiffEntry = spy(mBatteryDiffEntry);
         // Adds fake testing data.
         BatteryDiffEntry.sResourceCache.put(
-            "fakeBatteryDiffEntryKey",
+                "fakeBatteryDiffEntryKey",
-            new BatteryEntry.NameAndIcon("fakeName", /*icon=*/ null, /*iconId=*/ 1));
+                new BatteryEntry.NameAndIcon("fakeName", /*icon=*/ null, /*iconId=*/ 1));
         mBatteryChartPreferenceController.setBatteryHistoryMap(
-            createBatteryHistoryMap());
+                createBatteryHistoryMap());
     }
 
     @Test
@@ -151,7 +151,7 @@ public final class BatteryChartPreferenceControllerTest {
     public void testOnDestroy_clearPreferenceCache() {
         // Ensures the testing environment is correct.
         mBatteryChartPreferenceController.mPreferenceCache.put(
-            PREF_KEY, mPowerGaugePreference);
+                PREF_KEY, mPowerGaugePreference);
         assertThat(mBatteryChartPreferenceController.mPreferenceCache).hasSize(1);
 
         mBatteryChartPreferenceController.onDestroy();
@@ -168,19 +168,19 @@ public final class BatteryChartPreferenceControllerTest {
     @Test
     public void testSetBatteryHistoryMap_createExpectedKeysAndLevels() {
         mBatteryChartPreferenceController.setBatteryHistoryMap(
-            createBatteryHistoryMap());
+                createBatteryHistoryMap());
 
         // Verifies the created battery keys array.
         for (int index = 0; index < DESIRED_HISTORY_SIZE; index++) {
             assertThat(mBatteryChartPreferenceController.mBatteryHistoryKeys[index])
-                // These values is are calculated by hand from createBatteryHistoryMap().
+                    // These values is are calculated by hand from createBatteryHistoryMap().
-                .isEqualTo(index + 1);
+                    .isEqualTo(index + 1);
         }
         // Verifies the created battery levels array.
         for (int index = 0; index < 13; index++) {
             assertThat(mBatteryChartPreferenceController.mBatteryHistoryLevels[index])
-                // These values is are calculated by hand from createBatteryHistoryMap().
+                    // These values is are calculated by hand from createBatteryHistoryMap().
-                .isEqualTo(100 - index * 2);
+                    .isEqualTo(100 - index * 2);
         }
         assertThat(mBatteryChartPreferenceController.mBatteryIndexedMap).hasSize(13);
     }
@@ -188,19 +188,19 @@ public final class BatteryChartPreferenceControllerTest {
     @Test
     public void testSetBatteryHistoryMap_largeSize_createExpectedKeysAndLevels() {
         mBatteryChartPreferenceController.setBatteryHistoryMap(
-            createBatteryHistoryMap());
+                createBatteryHistoryMap());
 
         // Verifies the created battery keys array.
         for (int index = 0; index < DESIRED_HISTORY_SIZE; index++) {
-          assertThat(mBatteryChartPreferenceController.mBatteryHistoryKeys[index])
+            assertThat(mBatteryChartPreferenceController.mBatteryHistoryKeys[index])
-              // These values is are calculated by hand from createBatteryHistoryMap().
+                    // These values is are calculated by hand from createBatteryHistoryMap().
-              .isEqualTo(index + 1);
+                    .isEqualTo(index + 1);
         }
         // Verifies the created battery levels array.
         for (int index = 0; index < 13; index++) {
-          assertThat(mBatteryChartPreferenceController.mBatteryHistoryLevels[index])
+            assertThat(mBatteryChartPreferenceController.mBatteryHistoryLevels[index])
-              // These values is are calculated by hand from createBatteryHistoryMap().
+                    // These values is are calculated by hand from createBatteryHistoryMap().
-              .isEqualTo(100 - index * 2);
+                    .isEqualTo(100 - index * 2);
         }
         assertThat(mBatteryChartPreferenceController.mBatteryIndexedMap).hasSize(13);
     }
@@ -209,14 +209,14 @@ public final class BatteryChartPreferenceControllerTest {
     public void testRefreshUi_batteryIndexedMapIsNull_ignoreRefresh() {
         mBatteryChartPreferenceController.setBatteryHistoryMap(null);
         assertThat(mBatteryChartPreferenceController.refreshUi(
-            /*trapezoidIndex=*/ 1, /*isForce=*/ false)).isFalse();
+                /*trapezoidIndex=*/ 1, /*isForce=*/ false)).isFalse();
     }
 
     @Test
     public void testRefreshUi_batteryChartViewIsNull_ignoreRefresh() {
         mBatteryChartPreferenceController.mBatteryChartView = null;
         assertThat(mBatteryChartPreferenceController.refreshUi(
-            /*trapezoidIndex=*/ 1, /*isForce=*/ false)).isFalse();
+                /*trapezoidIndex=*/ 1, /*isForce=*/ false)).isFalse();
     }
 
     @Test
@@ -224,7 +224,7 @@ public final class BatteryChartPreferenceControllerTest {
         final int trapezoidIndex = 1;
         mBatteryChartPreferenceController.mTrapezoidIndex = trapezoidIndex;
         assertThat(mBatteryChartPreferenceController.refreshUi(
-            trapezoidIndex, /*isForce=*/ false)).isFalse();
+                trapezoidIndex, /*isForce=*/ false)).isFalse();
     }
 
     @Test
@@ -232,18 +232,18 @@ public final class BatteryChartPreferenceControllerTest {
         final int trapezoidIndex = 1;
         mBatteryChartPreferenceController.mTrapezoidIndex = trapezoidIndex;
         assertThat(mBatteryChartPreferenceController.refreshUi(
-            trapezoidIndex, /*isForce=*/ true)).isTrue();
+                trapezoidIndex, /*isForce=*/ true)).isTrue();
     }
 
     @Test
     public void testForceRefreshUi_updateTrapezoidIndexIntoSelectAll() {
         mBatteryChartPreferenceController.mTrapezoidIndex =
-            BatteryChartView.SELECTED_INDEX_INVALID;
+                BatteryChartView.SELECTED_INDEX_INVALID;
         mBatteryChartPreferenceController.setBatteryHistoryMap(
-            createBatteryHistoryMap());
+                createBatteryHistoryMap());
 
         assertThat(mBatteryChartPreferenceController.mTrapezoidIndex)
-            .isEqualTo(BatteryChartView.SELECTED_INDEX_ALL);
+                .isEqualTo(BatteryChartView.SELECTED_INDEX_ALL);
     }
 
     @Test
@@ -252,7 +252,7 @@ public final class BatteryChartPreferenceControllerTest {
         doReturn(0).when(mAppListGroup).getPreferenceCount();
 
         mBatteryChartPreferenceController.refreshUi(
-            trapezoidIndex, /*isForce=*/ true);
+                trapezoidIndex, /*isForce=*/ true);
         verify(mAppListGroup, never()).removeAll();
     }
 
@@ -266,17 +266,17 @@ public final class BatteryChartPreferenceControllerTest {
         assertThat(mBatteryChartPreferenceController.mPreferenceCache).isEmpty();
 
         mBatteryChartPreferenceController.refreshUi(
-            trapezoidIndex, /*isForce=*/ true);
+                trapezoidIndex, /*isForce=*/ true);
 
         assertThat(mBatteryChartPreferenceController.mPreferenceCache.get(PREF_KEY))
-            .isEqualTo(mPowerGaugePreference);
+                .isEqualTo(mPowerGaugePreference);
         verify(mAppListGroup).removeAll();
     }
 
     @Test
     public void testAddPreferenceToScreen_emptyContent_ignoreAddPreference() {
         mBatteryChartPreferenceController.addPreferenceToScreen(
-            new ArrayList<BatteryDiffEntry>());
+                new ArrayList<BatteryDiffEntry>());
         verify(mAppListGroup, never()).addPreference(any());
     }
 
@@ -291,12 +291,12 @@ public final class BatteryChartPreferenceControllerTest {
         doReturn(false).when(mBatteryDiffEntry).validForRestriction();
 
         mBatteryChartPreferenceController.addPreferenceToScreen(
-            Arrays.asList(mBatteryDiffEntry));
+                Arrays.asList(mBatteryDiffEntry));
 
         // Verifies the preference cache.
         final PowerGaugePreference pref =
-            (PowerGaugePreference) mBatteryChartPreferenceController.mPreferenceCache
+                (PowerGaugePreference) mBatteryChartPreferenceController.mPreferenceCache
-                .get(PREF_KEY);
+                        .get(PREF_KEY);
         assertThat(pref).isNotNull();
         // Verifies the added preference configuration.
         verify(mAppListGroup).addPreference(pref);
@@ -319,7 +319,7 @@ public final class BatteryChartPreferenceControllerTest {
         doReturn(mPowerGaugePreference).when(mAppListGroup).findPreference(PREF_KEY);
 
         mBatteryChartPreferenceController.addPreferenceToScreen(
-            Arrays.asList(mBatteryDiffEntry));
+                Arrays.asList(mBatteryDiffEntry));
 
         verify(mAppListGroup, never()).addPreference(any());
     }
@@ -327,12 +327,12 @@ public final class BatteryChartPreferenceControllerTest {
     @Test
     public void testHandlePreferenceTreeiClick_notPowerGaugePreference_returnFalse() {
         assertThat(mBatteryChartPreferenceController.handlePreferenceTreeClick(mAppListGroup))
-            .isFalse();
+                .isFalse();
 
         verify(mMetricsFeatureProvider, never())
-            .action(mContext, SettingsEnums.ACTION_BATTERY_USAGE_APP_ITEM);
+                .action(mContext, SettingsEnums.ACTION_BATTERY_USAGE_APP_ITEM);
         verify(mMetricsFeatureProvider, never())
-            .action(mContext, SettingsEnums.ACTION_BATTERY_USAGE_SYSTEM_ITEM);
+                .action(mContext, SettingsEnums.ACTION_BATTERY_USAGE_SYSTEM_ITEM);
     }
 
     @Test
@@ -341,7 +341,7 @@ public final class BatteryChartPreferenceControllerTest {
         doReturn(mBatteryDiffEntry).when(mPowerGaugePreference).getBatteryDiffEntry();
 
         assertThat(mBatteryChartPreferenceController.handlePreferenceTreeClick(
-            mPowerGaugePreference)).isTrue();
+                mPowerGaugePreference)).isTrue();
         verify(mMetricsFeatureProvider)
                 .action(
                         SettingsEnums.OPEN_BATTERY_USAGE,
@@ -358,7 +358,7 @@ public final class BatteryChartPreferenceControllerTest {
         doReturn(mBatteryDiffEntry).when(mPowerGaugePreference).getBatteryDiffEntry();
 
         assertThat(mBatteryChartPreferenceController.handlePreferenceTreeClick(
-            mPowerGaugePreference)).isTrue();
+                mPowerGaugePreference)).isTrue();
         verify(mMetricsFeatureProvider)
                 .action(
                         SettingsEnums.OPEN_BATTERY_USAGE,
@@ -374,9 +374,9 @@ public final class BatteryChartPreferenceControllerTest {
         pref.setSummary(PREF_SUMMARY);
 
         mBatteryChartPreferenceController.setPreferenceSummary(
-            pref, createBatteryDiffEntry(
+                pref, createBatteryDiffEntry(
-                /*foregroundUsageTimeInMs=*/ 0,
+                        /*foregroundUsageTimeInMs=*/ 0,
-                /*backgroundUsageTimeInMs=*/ 0));
+                        /*backgroundUsageTimeInMs=*/ 0));
         assertThat(pref.getSummary()).isNull();
     }
 
@@ -386,9 +386,9 @@ public final class BatteryChartPreferenceControllerTest {
         pref.setSummary(PREF_SUMMARY);
 
         mBatteryChartPreferenceController.setPreferenceSummary(
-            pref, createBatteryDiffEntry(
+                pref, createBatteryDiffEntry(
-                /*foregroundUsageTimeInMs=*/ 0,
+                        /*foregroundUsageTimeInMs=*/ 0,
-                /*backgroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS));
+                        /*backgroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS));
         assertThat(pref.getSummary()).isEqualTo("Background: 1 min");
     }
 
@@ -398,9 +398,9 @@ public final class BatteryChartPreferenceControllerTest {
         pref.setSummary(PREF_SUMMARY);
 
         mBatteryChartPreferenceController.setPreferenceSummary(
-            pref, createBatteryDiffEntry(
+                pref, createBatteryDiffEntry(
-                /*foregroundUsageTimeInMs=*/ 100,
+                        /*foregroundUsageTimeInMs=*/ 100,
-                /*backgroundUsageTimeInMs=*/ 200));
+                        /*backgroundUsageTimeInMs=*/ 200));
         assertThat(pref.getSummary()).isEqualTo("Total: less than a min");
     }
 
@@ -410,11 +410,11 @@ public final class BatteryChartPreferenceControllerTest {
         pref.setSummary(PREF_SUMMARY);
 
         mBatteryChartPreferenceController.setPreferenceSummary(
-            pref, createBatteryDiffEntry(
+                pref, createBatteryDiffEntry(
-                /*foregroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS,
+                        /*foregroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS,
-                /*backgroundUsageTimeInMs=*/ 200));
+                        /*backgroundUsageTimeInMs=*/ 200));
         assertThat(pref.getSummary())
-            .isEqualTo("Total: 1 min\nBackground: less than a min");
+                .isEqualTo("Total: 1 min\nBackground: less than a min");
     }
 
     @Test
@@ -423,9 +423,9 @@ public final class BatteryChartPreferenceControllerTest {
         pref.setSummary(PREF_SUMMARY);
 
         mBatteryChartPreferenceController.setPreferenceSummary(
-            pref, createBatteryDiffEntry(
+                pref, createBatteryDiffEntry(
-                /*foregroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS,
+                        /*foregroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS,
-                /*backgroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS));
+                        /*backgroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS));
         assertThat(pref.getSummary()).isEqualTo("Total: 2 min\nBackground: 1 min");
     }
 
@@ -434,11 +434,11 @@ public final class BatteryChartPreferenceControllerTest {
         final PowerGaugePreference pref = new PowerGaugePreference(mContext);
         pref.setSummary(PREF_SUMMARY);
         final BatteryDiffEntry batteryDiffEntry =
-            spy(createBatteryDiffEntry(
+                spy(createBatteryDiffEntry(
-                /*foregroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS,
+                        /*foregroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS,
-                /*backgroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS));
+                        /*backgroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS));
         doReturn("com.android.googlequicksearchbox").when(batteryDiffEntry)
-            .getPackageName();
+                .getPackageName();
 
         mBatteryChartPreferenceController.setPreferenceSummary(pref, batteryDiffEntry);
         assertThat(pref.getSummary()).isNull();
@@ -447,28 +447,28 @@ public final class BatteryChartPreferenceControllerTest {
     @Test
     public void testValidateUsageTime_returnTrueIfBatteryDiffEntryIsValid() {
         assertThat(BatteryChartPreferenceController.validateUsageTime(
-            createBatteryDiffEntry(
+                createBatteryDiffEntry(
-                /*foregroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS,
+                        /*foregroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS,
-                /*backgroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS)))
+                        /*backgroundUsageTimeInMs=*/ DateUtils.MINUTE_IN_MILLIS)))
-            .isTrue();
+                .isTrue();
     }
 
     @Test
     public void testValidateUsageTime_foregroundTimeExceedThreshold_returnFalse() {
         assertThat(BatteryChartPreferenceController.validateUsageTime(
-            createBatteryDiffEntry(
+                createBatteryDiffEntry(
-                /*foregroundUsageTimeInMs=*/ DateUtils.HOUR_IN_MILLIS * 3,
+                        /*foregroundUsageTimeInMs=*/ DateUtils.HOUR_IN_MILLIS * 3,
-                /*backgroundUsageTimeInMs=*/ 0)))
+                        /*backgroundUsageTimeInMs=*/ 0)))
-            .isFalse();
+                .isFalse();
     }
 
     @Test
     public void testValidateUsageTime_backgroundTimeExceedThreshold_returnFalse() {
         assertThat(BatteryChartPreferenceController.validateUsageTime(
-            createBatteryDiffEntry(
+                createBatteryDiffEntry(
-                /*foregroundUsageTimeInMs=*/ 0,
+                        /*foregroundUsageTimeInMs=*/ 0,
-                /*backgroundUsageTimeInMs=*/ DateUtils.HOUR_IN_MILLIS * 3)))
+                        /*backgroundUsageTimeInMs=*/ DateUtils.HOUR_IN_MILLIS * 3)))
-            .isFalse();
+                .isFalse();
     }
 
     @Test
@@ -486,10 +486,10 @@ public final class BatteryChartPreferenceControllerTest {
         // Verifies the added preference.
         assertThat(captor.getValue().getKey()).isEqualTo(PREF_KEY);
         verify(mMetricsFeatureProvider)
-            .action(
+                .action(
-                mContext,
+                        mContext,
-                SettingsEnums.ACTION_BATTERY_USAGE_EXPAND_ITEM,
+                        SettingsEnums.ACTION_BATTERY_USAGE_EXPAND_ITEM,
-                true /*isExpanded*/);
+                        true /*isExpanded*/);
     }
 
     @Test
@@ -506,10 +506,10 @@ public final class BatteryChartPreferenceControllerTest {
         verify(mAppListGroup).removePreference(mPowerGaugePreference);
         assertThat(mBatteryChartPreferenceController.mPreferenceCache).hasSize(1);
         verify(mMetricsFeatureProvider)
-            .action(
+                .action(
-                mContext,
+                        mContext,
-                SettingsEnums.ACTION_BATTERY_USAGE_EXPAND_ITEM,
+                        SettingsEnums.ACTION_BATTERY_USAGE_EXPAND_ITEM,
-                false /*isExpanded*/);
+                        false /*isExpanded*/);
     }
 
     @Test
@@ -517,16 +517,16 @@ public final class BatteryChartPreferenceControllerTest {
         mBatteryChartPreferenceController.onSelect(1 /*slot index*/);
 
         verify(mMetricsFeatureProvider)
-            .action(mContext, SettingsEnums.ACTION_BATTERY_USAGE_TIME_SLOT);
+                .action(mContext, SettingsEnums.ACTION_BATTERY_USAGE_TIME_SLOT);
     }
 
     @Test
     public void testOnSelect_selectAll_logMetric() {
         mBatteryChartPreferenceController.onSelect(
-            BatteryChartView.SELECTED_INDEX_ALL /*slot index*/);
+                BatteryChartView.SELECTED_INDEX_ALL /*slot index*/);
 
         verify(mMetricsFeatureProvider)
-            .action(mContext, SettingsEnums.ACTION_BATTERY_USAGE_SHOW_ALL);
+                .action(mContext, SettingsEnums.ACTION_BATTERY_USAGE_SHOW_ALL);
     }
 
     @Test
@@ -534,9 +534,9 @@ public final class BatteryChartPreferenceControllerTest {
         mBatteryChartPreferenceController = createController();
         setUpBatteryHistoryKeys();
         mBatteryChartPreferenceController.mAppListPrefGroup =
-            spy(new PreferenceCategory(mContext));
+                spy(new PreferenceCategory(mContext));
         mBatteryChartPreferenceController.mExpandDividerPreference =
-            spy(new ExpandDividerPreference(mContext));
+                spy(new ExpandDividerPreference(mContext));
         // Simulates select the first slot.
         mBatteryChartPreferenceController.mTrapezoidIndex = 0;
 
@@ -545,12 +545,12 @@ public final class BatteryChartPreferenceControllerTest {
         ArgumentCaptor<String> captor = ArgumentCaptor.forClass(String.class);
         // Verifies the title in the preference group.
         verify(mBatteryChartPreferenceController.mAppListPrefGroup)
-            .setTitle(captor.capture());
+                .setTitle(captor.capture());
         assertThat(captor.getValue()).isNotEqualTo("App usage for past 24 hr");
         // Verifies the title in the expandable divider.
         captor = ArgumentCaptor.forClass(String.class);
         verify(mBatteryChartPreferenceController.mExpandDividerPreference)
-            .setTitle(captor.capture());
+                .setTitle(captor.capture());
         assertThat(captor.getValue()).isNotEqualTo("System usage for past 24 hr");
     }
 
@@ -558,27 +558,27 @@ public final class BatteryChartPreferenceControllerTest {
     public void testRefreshCategoryTitle_setLast24HrIntoBothTitleTextView() {
         mBatteryChartPreferenceController = createController();
         mBatteryChartPreferenceController.mAppListPrefGroup =
-            spy(new PreferenceCategory(mContext));
+                spy(new PreferenceCategory(mContext));
         mBatteryChartPreferenceController.mExpandDividerPreference =
-            spy(new ExpandDividerPreference(mContext));
+                spy(new ExpandDividerPreference(mContext));
         // Simulates select all condition.
         mBatteryChartPreferenceController.mTrapezoidIndex =
-            BatteryChartView.SELECTED_INDEX_ALL;
+                BatteryChartView.SELECTED_INDEX_ALL;
 
         mBatteryChartPreferenceController.refreshCategoryTitle();
 
         ArgumentCaptor<String> captor = ArgumentCaptor.forClass(String.class);
         // Verifies the title in the preference group.
         verify(mBatteryChartPreferenceController.mAppListPrefGroup)
-            .setTitle(captor.capture());
+                .setTitle(captor.capture());
         assertThat(captor.getValue())
-            .isEqualTo("App usage for past 24 hr");
+                .isEqualTo("App usage for past 24 hr");
         // Verifies the title in the expandable divider.
         captor = ArgumentCaptor.forClass(String.class);
         verify(mBatteryChartPreferenceController.mExpandDividerPreference)
-            .setTitle(captor.capture());
+                .setTitle(captor.capture());
         assertThat(captor.getValue())
-            .isEqualTo("System usage for past 24 hr");
+                .isEqualTo("System usage for past 24 hr");
     }
 
     @Test
@@ -586,37 +586,37 @@ public final class BatteryChartPreferenceControllerTest {
         mBatteryChartPreferenceController = createController();
         mBatteryChartPreferenceController.mBatteryHistoryKeys = null;
         mBatteryChartPreferenceController.mBatteryChartView =
-            spy(new BatteryChartView(mContext));
+                spy(new BatteryChartView(mContext));
         mBatteryChartPreferenceController.setTimestampLabel();
 
         verify(mBatteryChartPreferenceController.mBatteryChartView, never())
-            .setLatestTimestamp(anyLong());
+                .setLatestTimestamp(anyLong());
     }
 
     @Test
     public void testSetTimestampLabel_setExpectedTimestampData() {
         mBatteryChartPreferenceController = createController();
         mBatteryChartPreferenceController.mBatteryChartView =
-            spy(new BatteryChartView(mContext));
+                spy(new BatteryChartView(mContext));
         setUpBatteryHistoryKeys();
 
         mBatteryChartPreferenceController.setTimestampLabel();
 
         verify(mBatteryChartPreferenceController.mBatteryChartView)
-            .setLatestTimestamp(1619247636826L);
+                .setLatestTimestamp(1619247636826L);
     }
 
     @Test
     public void testSetTimestampLabel_withoutValidTimestamp_setExpectedTimestampData() {
         mBatteryChartPreferenceController = createController();
         mBatteryChartPreferenceController.mBatteryChartView =
-            spy(new BatteryChartView(mContext));
+                spy(new BatteryChartView(mContext));
-        mBatteryChartPreferenceController.mBatteryHistoryKeys = new long[] {0L};
+        mBatteryChartPreferenceController.mBatteryHistoryKeys = new long[]{0L};
 
         mBatteryChartPreferenceController.setTimestampLabel();
 
         verify(mBatteryChartPreferenceController.mBatteryChartView)
-            .setLatestTimestamp(anyLong());
+                .setLatestTimestamp(anyLong());
     }
 
     @Test
@@ -633,10 +633,10 @@ public final class BatteryChartPreferenceControllerTest {
 
         mBatteryChartPreferenceController.onCreate(bundle);
         mBatteryChartPreferenceController.setBatteryHistoryMap(
-             createBatteryHistoryMap());
+                createBatteryHistoryMap());
 
         assertThat(mBatteryChartPreferenceController.mTrapezoidIndex)
-            .isEqualTo(expectedIndex);
+                .isEqualTo(expectedIndex);
         assertThat(mBatteryChartPreferenceController.mIsExpanded).isTrue();
     }
 
@@ -644,24 +644,24 @@ public final class BatteryChartPreferenceControllerTest {
     public void testIsValidToShowSummary_returnExpectedResult() {
         assertThat(mBatteryChartPreferenceController
                 .isValidToShowSummary("com.google.android.apps.scone"))
-            .isTrue();
+                .isTrue();
 
         // Verifies the item which is defined in the array list.
         assertThat(mBatteryChartPreferenceController
                 .isValidToShowSummary("com.android.googlequicksearchbox"))
-            .isFalse();
+                .isFalse();
     }
 
     @Test
     public void testIsValidToShowEntry_returnExpectedResult() {
         assertThat(mBatteryChartPreferenceController
                 .isValidToShowEntry("com.google.android.apps.scone"))
-            .isTrue();
+                .isTrue();
 
         // Verifies the items which are defined in the array list.
         assertThat(mBatteryChartPreferenceController
                 .isValidToShowEntry("com.android.gms.persistent"))
-            .isFalse();
+                .isFalse();
     }
 
     private static Map<Long, Map<String, BatteryHistEntry>> createBatteryHistoryMap() {
@@ -680,22 +680,22 @@ public final class BatteryChartPreferenceControllerTest {
     private BatteryDiffEntry createBatteryDiffEntry(
             long foregroundUsageTimeInMs, long backgroundUsageTimeInMs) {
         return new BatteryDiffEntry(
-            mContext, foregroundUsageTimeInMs, backgroundUsageTimeInMs,
+                mContext, foregroundUsageTimeInMs, backgroundUsageTimeInMs,
-            /*consumePower=*/ 0, mBatteryHistEntry);
+                /*consumePower=*/ 0, mBatteryHistEntry);
     }
 
     private void setUpBatteryHistoryKeys() {
         mBatteryChartPreferenceController.mBatteryHistoryKeys =
-            new long[] {1619196786769L, 0L, 1619247636826L};
+                new long[]{1619196786769L, 0L, 1619247636826L};
         ConvertUtils.utcToLocalTimeHour(
-            mContext, /*timestamp=*/ 0, /*is24HourFormat=*/ false);
+                mContext, /*timestamp=*/ 0, /*is24HourFormat=*/ false);
     }
 
     private BatteryChartPreferenceController createController() {
         final BatteryChartPreferenceController controller =
-            new BatteryChartPreferenceController(
+                new BatteryChartPreferenceController(
-                mContext, "app_list", /*lifecycle=*/ null,
+                        mContext, "app_list", /*lifecycle=*/ null,
-                mSettingsActivity, mFragment);
+                        mSettingsActivity, mFragment);
         controller.mPrefContext = mContext;
         return controller;
     }

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BatteryChartViewTest.java

@@ -1,5 +1,6 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 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
@@ -11,14 +12,11 @@
  * 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.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.google.common.truth.Truth.assertThat;
 
-import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.spy;
@@ -30,6 +28,7 @@ import android.content.Context;
 import android.os.LocaleList;
 import android.view.accessibility.AccessibilityManager;
 
+import com.android.settings.fuelgauge.PowerUsageFeatureProvider;
 import com.android.settings.testutils.FakeFeatureFactory;
 
 import org.junit.Before;
@@ -40,8 +39,8 @@ import org.mockito.MockitoAnnotations;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
 
-import java.util.Arrays;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Locale;
 
 @RunWith(RobolectricTestRunner.class)
@@ -52,8 +51,10 @@ public final class BatteryChartViewTest {
     private FakeFeatureFactory mFeatureFactory;
     private PowerUsageFeatureProvider mPowerUsageFeatureProvider;
 
-    @Mock private AccessibilityServiceInfo mockAccessibilityServiceInfo;
+    @Mock
-    @Mock private AccessibilityManager mockAccessibilityManager;
+    private AccessibilityServiceInfo mMockAccessibilityServiceInfo;
+    @Mock
+    private AccessibilityManager mMockAccessibilityManager;
 
     @Before
     public void setUp() {
@@ -62,64 +63,64 @@ public final class BatteryChartViewTest {
         mPowerUsageFeatureProvider = mFeatureFactory.powerUsageFeatureProvider;
         mContext = spy(RuntimeEnvironment.application);
         mContext.getResources().getConfiguration().setLocales(
-            new LocaleList(new Locale("en_US")));
+                new LocaleList(new Locale("en_US")));
         mBatteryChartView = new BatteryChartView(mContext);
-        doReturn(mockAccessibilityManager).when(mContext)
+        doReturn(mMockAccessibilityManager).when(mContext)
-            .getSystemService(AccessibilityManager.class);
+                .getSystemService(AccessibilityManager.class);
-        doReturn("TalkBackService").when(mockAccessibilityServiceInfo).getId();
+        doReturn("TalkBackService").when(mMockAccessibilityServiceInfo).getId();
-        doReturn(Arrays.asList(mockAccessibilityServiceInfo))
+        doReturn(Arrays.asList(mMockAccessibilityServiceInfo))
-            .when(mockAccessibilityManager)
+                .when(mMockAccessibilityManager)
-            .getEnabledAccessibilityServiceList(anyInt());
+                .getEnabledAccessibilityServiceList(anyInt());
     }
 
     @Test
     public void testIsAccessibilityEnabled_disable_returnFalse() {
-        doReturn(false).when(mockAccessibilityManager).isEnabled();
+        doReturn(false).when(mMockAccessibilityManager).isEnabled();
         assertThat(BatteryChartView.isAccessibilityEnabled(mContext)).isFalse();
     }
 
     @Test
     public void testIsAccessibilityEnabled_emptyInfo_returnFalse() {
-        doReturn(true).when(mockAccessibilityManager).isEnabled();
+        doReturn(true).when(mMockAccessibilityManager).isEnabled();
         doReturn(new ArrayList<AccessibilityServiceInfo>())
-            .when(mockAccessibilityManager)
+                .when(mMockAccessibilityManager)
-            .getEnabledAccessibilityServiceList(anyInt());
+                .getEnabledAccessibilityServiceList(anyInt());
 
         assertThat(BatteryChartView.isAccessibilityEnabled(mContext)).isFalse();
     }
 
     @Test
     public void testIsAccessibilityEnabled_validServiceId_returnTrue() {
-        doReturn(true).when(mockAccessibilityManager).isEnabled();
+        doReturn(true).when(mMockAccessibilityManager).isEnabled();
         assertThat(BatteryChartView.isAccessibilityEnabled(mContext)).isTrue();
     }
 
     @Test
     public void testSetSelectedIndex_invokesCallback() {
-        final int selectedIndex[] = new int[1];
+        final int[] selectedIndex = new int[1];
         final int expectedIndex = 2;
         mBatteryChartView.mSelectedIndex = 1;
         mBatteryChartView.setOnSelectListener(
-            trapezoidIndex -> {
+                trapezoidIndex -> {
-                selectedIndex[0] = trapezoidIndex;
+                    selectedIndex[0] = trapezoidIndex;
-            });
+                });
 
         mBatteryChartView.setSelectedIndex(expectedIndex);
 
         assertThat(mBatteryChartView.mSelectedIndex)
-            .isEqualTo(expectedIndex);
+                .isEqualTo(expectedIndex);
         assertThat(selectedIndex[0]).isEqualTo(expectedIndex);
     }
 
     @Test
     public void testSetSelectedIndex_sameIndex_notInvokesCallback() {
-        final int selectedIndex[] = new int[1];
+        final int[] selectedIndex = new int[1];
         final int expectedIndex = 1;
         mBatteryChartView.mSelectedIndex = expectedIndex;
         mBatteryChartView.setOnSelectListener(
-            trapezoidIndex -> {
+                trapezoidIndex -> {
-                selectedIndex[0] = trapezoidIndex;
+                    selectedIndex[0] = trapezoidIndex;
-            });
+                });
 
         mBatteryChartView.setSelectedIndex(expectedIndex);
 
@@ -130,7 +131,7 @@ public final class BatteryChartViewTest {
     public void testClickable_isChartGraphSlotsEnabledIsFalse_notClickable() {
         mBatteryChartView.setClickableForce(true);
         when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
-            .thenReturn(false);
+                .thenReturn(false);
 
         mBatteryChartView.onAttachedToWindow();
         assertThat(mBatteryChartView.isClickable()).isFalse();
@@ -141,8 +142,8 @@ public final class BatteryChartViewTest {
     public void testClickable_accessibilityIsDisabled_clickable() {
         mBatteryChartView.setClickableForce(true);
         when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
-            .thenReturn(true);
+                .thenReturn(true);
-        doReturn(false).when(mockAccessibilityManager).isEnabled();
+        doReturn(false).when(mMockAccessibilityManager).isEnabled();
 
         mBatteryChartView.onAttachedToWindow();
         assertThat(mBatteryChartView.isClickable()).isTrue();
@@ -153,11 +154,11 @@ public final class BatteryChartViewTest {
     public void testClickable_accessibilityIsEnabledWithoutValidId_clickable() {
         mBatteryChartView.setClickableForce(true);
         when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
-            .thenReturn(true);
+                .thenReturn(true);
-        doReturn(true).when(mockAccessibilityManager).isEnabled();
+        doReturn(true).when(mMockAccessibilityManager).isEnabled();
         doReturn(new ArrayList<AccessibilityServiceInfo>())
-            .when(mockAccessibilityManager)
+                .when(mMockAccessibilityManager)
-            .getEnabledAccessibilityServiceList(anyInt());
+                .getEnabledAccessibilityServiceList(anyInt());
 
         mBatteryChartView.onAttachedToWindow();
         assertThat(mBatteryChartView.isClickable()).isTrue();
@@ -168,8 +169,8 @@ public final class BatteryChartViewTest {
     public void testClickable_accessibilityIsEnabledWithValidId_notClickable() {
         mBatteryChartView.setClickableForce(true);
         when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
-            .thenReturn(true);
+                .thenReturn(true);
-        doReturn(true).when(mockAccessibilityManager).isEnabled();
+        doReturn(true).when(mMockAccessibilityManager).isEnabled();
 
         mBatteryChartView.onAttachedToWindow();
         assertThat(mBatteryChartView.isClickable()).isFalse();
@@ -186,13 +187,13 @@ public final class BatteryChartViewTest {
         mBatteryChartView.setLevels(levels);
         mBatteryChartView.setClickableForce(true);
         when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
-            .thenReturn(true);
+                .thenReturn(true);
-        doReturn(true).when(mockAccessibilityManager).isEnabled();
+        doReturn(true).when(mMockAccessibilityManager).isEnabled();
         mBatteryChartView.onAttachedToWindow();
         // Ensures the testing environment is correct.
         assertThat(mBatteryChartView.isClickable()).isFalse();
         // Turns off accessibility service.
-        doReturn(false).when(mockAccessibilityManager).isEnabled();
+        doReturn(false).when(mMockAccessibilityManager).isEnabled();
 
         mBatteryChartView.onAttachedToWindow();
 
@@ -202,23 +203,23 @@ public final class BatteryChartViewTest {
     @Test
     public void testOnAttachedToWindow_addAccessibilityStateChangeListener() {
         mBatteryChartView.onAttachedToWindow();
-        verify(mockAccessibilityManager)
+        verify(mMockAccessibilityManager)
-            .addAccessibilityStateChangeListener(mBatteryChartView);
+                .addAccessibilityStateChangeListener(mBatteryChartView);
     }
 
     @Test
     public void testOnDetachedFromWindow_removeAccessibilityStateChangeListener() {
         mBatteryChartView.onAttachedToWindow();
         mBatteryChartView.mHandler.postDelayed(
-            mBatteryChartView.mUpdateClickableStateRun, 1000);
+                mBatteryChartView.mUpdateClickableStateRun, 1000);
 
         mBatteryChartView.onDetachedFromWindow();
 
-        verify(mockAccessibilityManager)
+        verify(mMockAccessibilityManager)
-            .removeAccessibilityStateChangeListener(mBatteryChartView);
+                .removeAccessibilityStateChangeListener(mBatteryChartView);
         assertThat(mBatteryChartView.mHandler.hasCallbacks(
                 mBatteryChartView.mUpdateClickableStateRun))
-            .isFalse();
+                .isFalse();
     }
 
     @Test
@@ -227,8 +228,8 @@ public final class BatteryChartViewTest {
         mBatteryChartView.onAccessibilityStateChanged(/*enabled=*/ true);
 
         verify(mBatteryChartView.mHandler)
-            .removeCallbacks(mBatteryChartView.mUpdateClickableStateRun);
+                .removeCallbacks(mBatteryChartView.mUpdateClickableStateRun);
         verify(mBatteryChartView.mHandler)
-            .postDelayed(mBatteryChartView.mUpdateClickableStateRun, 500L);
+                .postDelayed(mBatteryChartView.mUpdateClickableStateRun, 500L);
     }
 }

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BatteryDiffEntryTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.google.common.truth.Truth.assertThat;
 
@@ -35,6 +35,7 @@ import android.os.UserHandle;
 import android.os.UserManager;
 
 import com.android.settings.R;
+import com.android.settings.fuelgauge.BatteryUtils;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -59,15 +60,24 @@ public final class BatteryDiffEntryTest {
 
     private Context mContext;
 
-    @Mock private ApplicationInfo mockAppInfo;
+    @Mock
-    @Mock private PackageManager mockPackageManager;
+    private ApplicationInfo mMockAppInfo;
-    @Mock private UserManager mockUserManager;
+    @Mock
-    @Mock private Drawable mockDrawable;
+    private PackageManager mMockPackageManager;
-    @Mock private Drawable mockDrawable2;
+    @Mock
-    @Mock private Drawable mockBadgedDrawable;
+    private UserManager mMockUserManager;
-    @Mock private BatteryHistEntry mBatteryHistEntry;
+    @Mock
-    @Mock private PackageInfo mockPackageInfo;
+    private Drawable mMockDrawable;
-    @Mock private ConstantState mockConstantState;
+    @Mock
+    private Drawable mMockDrawable2;
+    @Mock
+    private Drawable mMockBadgedDrawable;
+    @Mock
+    private BatteryHistEntry mBatteryHistEntry;
+    @Mock
+    private PackageInfo mMockPackageInfo;
+    @Mock
+    private ConstantState mMockConstantState;
 
     @Before
     public void setUp() {
@@ -75,20 +85,20 @@ public final class BatteryDiffEntryTest {
         ShadowUserHandle.reset();
         mContext = spy(RuntimeEnvironment.application);
         doReturn(mContext).when(mContext).getApplicationContext();
-        doReturn(mockUserManager).when(mContext).getSystemService(UserManager.class);
+        doReturn(mMockUserManager).when(mContext).getSystemService(UserManager.class);
-        doReturn(mockPackageManager).when(mContext).getPackageManager();
+        doReturn(mMockPackageManager).when(mContext).getPackageManager();
         BatteryDiffEntry.clearCache();
     }
 
     @Test
     public void testSetTotalConsumePower_returnExpectedResult() {
         final BatteryDiffEntry entry =
-            new BatteryDiffEntry(
+                new BatteryDiffEntry(
-                mContext,
+                        mContext,
-                /*foregroundUsageTimeInMs=*/ 10001L,
+                        /*foregroundUsageTimeInMs=*/ 10001L,
-                /*backgroundUsageTimeInMs=*/ 20002L,
+                        /*backgroundUsageTimeInMs=*/ 20002L,
-                /*consumePower=*/ 22.0,
+                        /*consumePower=*/ 22.0,
-                /*batteryHistEntry=*/ null);
+                        /*batteryHistEntry=*/ null);
         entry.setTotalConsumePower(100.0);
 
         assertThat(entry.getPercentOfTotal()).isEqualTo(22.0);
@@ -97,12 +107,12 @@ public final class BatteryDiffEntryTest {
     @Test
     public void testSetTotalConsumePower_setZeroValue_returnsZeroValue() {
         final BatteryDiffEntry entry =
-            new BatteryDiffEntry(
+                new BatteryDiffEntry(
-                mContext,
+                        mContext,
-                /*foregroundUsageTimeInMs=*/ 10001L,
+                        /*foregroundUsageTimeInMs=*/ 10001L,
-                /*backgroundUsageTimeInMs=*/ 20002L,
+                        /*backgroundUsageTimeInMs=*/ 20002L,
-                /*consumePower=*/ 22.0,
+                        /*consumePower=*/ 22.0,
-                /*batteryHistEntry=*/ null);
+                        /*batteryHistEntry=*/ null);
         entry.setTotalConsumePower(0);
 
         assertThat(entry.getPercentOfTotal()).isEqualTo(0);
@@ -127,9 +137,9 @@ public final class BatteryDiffEntryTest {
         final String expectedName = "Ambient display";
         // Generates fake testing data.
         final ContentValues values = getContentValuesWithType(
-            ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
+                ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
         values.put("drainType",
-            Integer.valueOf(BatteryConsumer.POWER_COMPONENT_AMBIENT_DISPLAY));
+                Integer.valueOf(BatteryConsumer.POWER_COMPONENT_AMBIENT_DISPLAY));
         final BatteryHistEntry batteryHistEntry = new BatteryHistEntry(values);
 
         final BatteryDiffEntry entry = createBatteryDiffEntry(10, batteryHistEntry);
@@ -139,7 +149,7 @@ public final class BatteryDiffEntryTest {
         assertThat(BatteryDiffEntry.sResourceCache).hasSize(1);
         // Verifies the app label in the cache.
         final BatteryEntry.NameAndIcon nameAndIcon =
-            BatteryDiffEntry.sResourceCache.get(entry.getKey());
+                BatteryDiffEntry.sResourceCache.get(entry.getKey());
         assertThat(nameAndIcon.mName).isEqualTo(expectedName);
         assertThat(nameAndIcon.mIconId).isEqualTo(R.drawable.ic_settings_aod);
         // Verifies the restrictable flag in the cache.
@@ -150,10 +160,10 @@ public final class BatteryDiffEntryTest {
     @Test
     public void testLoadLabelAndIcon_forUserBattery_returnExpectedResult() {
         final String expectedName = "Removed user";
-        doReturn(null).when(mockUserManager).getUserInfo(1001);
+        doReturn(null).when(mMockUserManager).getUserInfo(1001);
         // Generates fake testing data.
         final ContentValues values = getContentValuesWithType(
-            ConvertUtils.CONSUMER_TYPE_USER_BATTERY);
+                ConvertUtils.CONSUMER_TYPE_USER_BATTERY);
         values.put("userId", Integer.valueOf(1001));
         final BatteryHistEntry batteryHistEntry = new BatteryHistEntry(values);
 
@@ -165,7 +175,7 @@ public final class BatteryDiffEntryTest {
         assertThat(BatteryDiffEntry.sResourceCache).hasSize(1);
         // Verifies the app label in the cache.
         final BatteryEntry.NameAndIcon nameAndIcon =
-            BatteryDiffEntry.sResourceCache.get(entry.getKey());
+                BatteryDiffEntry.sResourceCache.get(entry.getKey());
         assertThat(nameAndIcon.mName).isEqualTo(expectedName);
         assertThat(nameAndIcon.mIconId).isEqualTo(0);
         // Verifies the restrictable flag in the cache.
@@ -178,13 +188,13 @@ public final class BatteryDiffEntryTest {
         final String expectedAppLabel = "fake app label";
         final String fakePackageName = "com.fake.google.com";
         final ContentValues values = getContentValuesWithType(
-            ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
+                ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
         values.put("uid", /*invalid uid*/ 10001);
         values.put("packageName", fakePackageName);
-        doReturn(mockAppInfo).when(mockPackageManager)
+        doReturn(mMockAppInfo).when(mMockPackageManager)
-            .getApplicationInfo(fakePackageName, 0);
+                .getApplicationInfo(fakePackageName, 0);
-        doReturn(expectedAppLabel).when(mockPackageManager)
+        doReturn(expectedAppLabel).when(mMockPackageManager)
-            .getApplicationLabel(mockAppInfo);
+                .getApplicationLabel(mMockAppInfo);
         final BatteryHistEntry batteryHistEntry = new BatteryHistEntry(values);
 
         final BatteryDiffEntry entry = createBatteryDiffEntry(10, batteryHistEntry);
@@ -194,7 +204,7 @@ public final class BatteryDiffEntryTest {
         assertThat(BatteryDiffEntry.sResourceCache).hasSize(1);
         // Verifies the app label in the cache.
         final BatteryEntry.NameAndIcon nameAndIcon =
-            BatteryDiffEntry.sResourceCache.get(entry.getKey());
+                BatteryDiffEntry.sResourceCache.get(entry.getKey());
         assertThat(nameAndIcon.mName).isEqualTo(expectedAppLabel);
         // Verifies the restrictable flag in the cache.
         assertThat(entry.mValidForRestriction).isFalse();
@@ -205,7 +215,7 @@ public final class BatteryDiffEntryTest {
     public void testGetAppLabel_loadDataFromPreDefinedNameAndUid() {
         final String expectedAppLabel = "Android OS";
         final ContentValues values = getContentValuesWithType(
-            ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
+                ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
         final BatteryHistEntry batteryHistEntry = new BatteryHistEntry(values);
 
         final BatteryDiffEntry entry = createBatteryDiffEntry(10, batteryHistEntry);
@@ -214,7 +224,7 @@ public final class BatteryDiffEntryTest {
         assertThat(BatteryDiffEntry.sResourceCache).hasSize(1);
         // Verifies the app label in the cache.
         final BatteryEntry.NameAndIcon nameAndIcon =
-            BatteryDiffEntry.sResourceCache.get(entry.getKey());
+                BatteryDiffEntry.sResourceCache.get(entry.getKey());
         assertThat(nameAndIcon.mName).isEqualTo(expectedAppLabel);
     }
 
@@ -222,7 +232,7 @@ public final class BatteryDiffEntryTest {
     public void testGetAppLabel_nullAppLabel_returnAppLabelInBatteryHistEntry() {
         final String expectedAppLabel = "fake app label";
         final ContentValues values = getContentValuesWithType(
-            ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
+                ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
         values.put("appLabel", expectedAppLabel);
         final BatteryHistEntry batteryHistEntry = new BatteryHistEntry(values);
 
@@ -236,15 +246,15 @@ public final class BatteryDiffEntryTest {
     @Test
     public void testGetAppIcon_nonUidConsumer_returnAppIconInBatteryDiffEntry() {
         final ContentValues values = getContentValuesWithType(
-            ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
+                ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
         final BatteryHistEntry batteryHistEntry = new BatteryHistEntry(values);
-        mockConstantState(mockDrawable);
+        mockConstantState(mMockDrawable);
 
         final BatteryDiffEntry entry = createBatteryDiffEntry(10, batteryHistEntry);
 
         entry.mIsLoaded = true;
-        entry.mAppIcon = mockDrawable;
+        entry.mAppIcon = mMockDrawable;
-        assertThat(entry.getAppIcon()).isEqualTo(mockDrawable);
+        assertThat(entry.getAppIcon()).isEqualTo(mMockDrawable);
         assertThat(BatteryDiffEntry.sResourceCache).isEmpty();
     }
 
@@ -252,38 +262,38 @@ public final class BatteryDiffEntryTest {
     public void testGetAppIcon_uidConsumerForNonOwner_returnDefaultActivityIconWithBadge()
             throws Exception {
         ShadowUserHandle.setUid(10);
-        final BatteryDiffEntry entry = createBatteryDiffEntry(mockDrawable);
+        final BatteryDiffEntry entry = createBatteryDiffEntry(mMockDrawable);
-        mockConstantState(mockDrawable);
+        mockConstantState(mMockDrawable);
-        mockConstantState(mockBadgedDrawable);
+        mockConstantState(mMockBadgedDrawable);
-        doReturn(mockBadgedDrawable).when(mockUserManager)
+        doReturn(mMockBadgedDrawable).when(mMockUserManager)
-            .getBadgedIconForUser(eq(mockDrawable), any());
+                .getBadgedIconForUser(eq(mMockDrawable), any());
 
         entry.mAppIcon = null;
-        assertThat(entry.getAppIcon()).isEqualTo(mockBadgedDrawable);
+        assertThat(entry.getAppIcon()).isEqualTo(mMockBadgedDrawable);
     }
 
     @Test
     public void testGetAppIcon_uidConsumerWithNullIcon_returnDefaultActivityIcon()
             throws Exception {
-        final BatteryDiffEntry entry = createBatteryDiffEntry(mockDrawable);
+        final BatteryDiffEntry entry = createBatteryDiffEntry(mMockDrawable);
-        mockConstantState(mockDrawable);
+        mockConstantState(mMockDrawable);
 
         entry.mAppIcon = null;
-        assertThat(entry.getAppIcon()).isEqualTo(mockDrawable);
+        assertThat(entry.getAppIcon()).isEqualTo(mMockDrawable);
         assertThat(BatteryDiffEntry.sResourceCache).hasSize(1);
         // Verifies the app label in the cache.
         final BatteryEntry.NameAndIcon nameAndIcon =
-            BatteryDiffEntry.sResourceCache.get(entry.getKey());
+                BatteryDiffEntry.sResourceCache.get(entry.getKey());
-        assertThat(nameAndIcon.mIcon).isEqualTo(mockDrawable);
+        assertThat(nameAndIcon.mIcon).isEqualTo(mMockDrawable);
     }
 
     @Test
     public void testClearCache_clearDataForResourcesAndFlags() {
         BatteryDiffEntry.sResourceCache.put(
-            "fake application key",
+                "fake application key",
-            new BatteryEntry.NameAndIcon("app label", null, /*iconId=*/ 0));
+                new BatteryEntry.NameAndIcon("app label", null, /*iconId=*/ 0));
         BatteryDiffEntry.sValidForRestriction.put(
-            "fake application key", Boolean.valueOf(false));
+                "fake application key", Boolean.valueOf(false));
 
         BatteryDiffEntry.clearCache();
 
@@ -295,83 +305,83 @@ public final class BatteryDiffEntryTest {
     public void testClearCache_switchLocale_clearCacheIconAndLabel() throws Exception {
         final int userId = UserHandle.getUserId(1001);
         Locale.setDefault(new Locale("en_US"));
-        final BatteryDiffEntry entry1 = createBatteryDiffEntry(mockDrawable);
+        final BatteryDiffEntry entry1 = createBatteryDiffEntry(mMockDrawable);
-        mockConstantState(mockDrawable);
+        mockConstantState(mMockDrawable);
-        assertThat(entry1.getAppIcon()).isEqualTo(mockDrawable);
+        assertThat(entry1.getAppIcon()).isEqualTo(mMockDrawable);
         // Switch the locale into another one.
         Locale.setDefault(new Locale("zh_TW"));
 
-        final BatteryDiffEntry entry2 = createBatteryDiffEntry(mockDrawable2);
+        final BatteryDiffEntry entry2 = createBatteryDiffEntry(mMockDrawable2);
 
         // We should get new drawable without caching.
-        mockConstantState(mockDrawable2);
+        mockConstantState(mMockDrawable2);
-        assertThat(entry2.getAppIcon()).isEqualTo(mockDrawable2);
+        assertThat(entry2.getAppIcon()).isEqualTo(mMockDrawable2);
         // Verifies the cache is updated into the new drawable.
         final BatteryEntry.NameAndIcon nameAndIcon =
-            BatteryDiffEntry.sResourceCache.get(entry2.getKey());
+                BatteryDiffEntry.sResourceCache.get(entry2.getKey());
-        assertThat(nameAndIcon.mIcon).isEqualTo(mockDrawable2);
+        assertThat(nameAndIcon.mIcon).isEqualTo(mMockDrawable2);
     }
 
     @Test
     public void testIsSystemEntry_userBattery_returnTrue() {
         final BatteryDiffEntry entry =
-            createBatteryDiffEntry(
+                createBatteryDiffEntry(
-                ConvertUtils.CONSUMER_TYPE_USER_BATTERY,
+                        ConvertUtils.CONSUMER_TYPE_USER_BATTERY,
-                /*uid=*/ 0, /*isHidden=*/ false);
+                        /*uid=*/ 0, /*isHidden=*/ false);
         assertThat(entry.isSystemEntry()).isTrue();
     }
 
     @Test
     public void testIsSystemEntry_systemBattery_returnTrue() {
         final BatteryDiffEntry entry =
-            createBatteryDiffEntry(
+                createBatteryDiffEntry(
-                ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY,
+                        ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY,
-                /*uid=*/ 0, /*isHidden=*/ false);
+                        /*uid=*/ 0, /*isHidden=*/ false);
         assertThat(entry.isSystemEntry()).isTrue();
     }
 
     @Test
     public void testIsSystemEntry_uidBattery_returnFalse() {
         final BatteryDiffEntry entry =
-            createBatteryDiffEntry(
+                createBatteryDiffEntry(
-                ConvertUtils.CONSUMER_TYPE_UID_BATTERY,
+                        ConvertUtils.CONSUMER_TYPE_UID_BATTERY,
-                /*uid=*/ 123, /*isHidden=*/ false);
+                        /*uid=*/ 123, /*isHidden=*/ false);
         assertThat(entry.isSystemEntry()).isFalse();
     }
 
     @Test
     public void testIsSystemEntry_uidBatteryWithHiddenState_returnTrue() {
         final BatteryDiffEntry entry =
-            createBatteryDiffEntry(
+                createBatteryDiffEntry(
-                ConvertUtils.CONSUMER_TYPE_UID_BATTERY,
+                        ConvertUtils.CONSUMER_TYPE_UID_BATTERY,
-                /*uid=*/ 123, /*isHidden=*/ true);
+                        /*uid=*/ 123, /*isHidden=*/ true);
         assertThat(entry.isSystemEntry()).isTrue();
     }
 
     @Test
     public void testIsSystemEntry_uidBatteryWithSystemProcess_returnFalse() {
         final BatteryDiffEntry entry =
-            createBatteryDiffEntry(
+                createBatteryDiffEntry(
-                ConvertUtils.CONSUMER_TYPE_UID_BATTERY,
+                        ConvertUtils.CONSUMER_TYPE_UID_BATTERY,
-                /*uid=*/ 1230, /*isHidden=*/ false);
+                        /*uid=*/ 1230, /*isHidden=*/ false);
         assertThat(entry.isSystemEntry()).isFalse();
     }
 
     @Test
     public void testIsSystemEntry_uidBatteryWithTetheringProcess_returnTrue() {
         final BatteryDiffEntry entry =
-            createBatteryDiffEntry(
+                createBatteryDiffEntry(
-                ConvertUtils.CONSUMER_TYPE_UID_BATTERY,
+                        ConvertUtils.CONSUMER_TYPE_UID_BATTERY,
-                /*uid=*/ BatteryUtils.UID_TETHERING, /*isHidden=*/ false);
+                        /*uid=*/ BatteryUtils.UID_TETHERING, /*isHidden=*/ false);
         assertThat(entry.isSystemEntry()).isTrue();
     }
 
     @Test
     public void testIsSystemEntry_uidBatteryWithRemovedAppsProcess_returnTrue() {
         final BatteryDiffEntry entry =
-            createBatteryDiffEntry(
+                createBatteryDiffEntry(
-                ConvertUtils.CONSUMER_TYPE_UID_BATTERY,
+                        ConvertUtils.CONSUMER_TYPE_UID_BATTERY,
-                /*uid=*/ BatteryUtils.UID_REMOVED_APPS, /*isHidden=*/ false);
+                        /*uid=*/ BatteryUtils.UID_REMOVED_APPS, /*isHidden=*/ false);
         assertThat(entry.isSystemEntry()).isTrue();
     }
 
@@ -380,30 +390,30 @@ public final class BatteryDiffEntryTest {
         final String expectedAppLabel = "fake app label";
         final String fakePackageName = "com.fake.google.com";
         final ContentValues values = getContentValuesWithType(
-            ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
+                ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
         values.put("uid", /*invalid uid*/ 10001);
         values.put("packageName", fakePackageName);
         final BatteryDiffEntry entry =
-            createBatteryDiffEntry(10, new BatteryHistEntry(values));
+                createBatteryDiffEntry(10, new BatteryHistEntry(values));
 
         entry.updateRestrictionFlagState();
         // Sets false if the app entry cannot be found.
         assertThat(entry.mValidForRestriction).isFalse();
 
-        doReturn(BatteryUtils.UID_NULL).when(mockPackageManager).getPackageUid(
+        doReturn(BatteryUtils.UID_NULL).when(mMockPackageManager).getPackageUid(
-            entry.getPackageName(), PackageManager.GET_META_DATA);
+                entry.getPackageName(), PackageManager.GET_META_DATA);
         entry.updateRestrictionFlagState();
         // Sets false if the app is invalid package name.
         assertThat(entry.mValidForRestriction).isFalse();
 
-        doReturn(1000).when(mockPackageManager).getPackageUid(
+        doReturn(1000).when(mMockPackageManager).getPackageUid(
-            entry.getPackageName(), PackageManager.GET_META_DATA);
+                entry.getPackageName(), PackageManager.GET_META_DATA);
         entry.updateRestrictionFlagState();
         // Sets false if the app PackageInfo cannot be found.
         assertThat(entry.mValidForRestriction).isFalse();
 
-        doReturn(mockPackageInfo).when(mockPackageManager).getPackageInfo(
+        doReturn(mMockPackageInfo).when(mMockPackageManager).getPackageInfo(
-            eq(entry.getPackageName()), anyInt());
+                eq(entry.getPackageName()), anyInt());
         entry.updateRestrictionFlagState();
         // Sets true if package is valid and PackageInfo can be found.
         assertThat(entry.mValidForRestriction).isTrue();
@@ -413,10 +423,10 @@ public final class BatteryDiffEntryTest {
     public void testGetPackageName_returnExpectedResult() {
         final String expectedPackageName = "com.fake.google.com";
         final ContentValues values = getContentValuesWithType(
-            ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
+                ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
         values.put("packageName", expectedPackageName);
         final BatteryDiffEntry entry =
-            createBatteryDiffEntry(10, new BatteryHistEntry(values));
+                createBatteryDiffEntry(10, new BatteryHistEntry(values));
 
         assertThat(entry.getPackageName()).isEqualTo(expectedPackageName);
     }
@@ -425,12 +435,12 @@ public final class BatteryDiffEntryTest {
     public void testGetPackageName_withProcessName_returnExpectedResult() {
         final String expectedPackageName = "com.fake.google.com";
         final ContentValues values = getContentValuesWithType(
-            ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
+                ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
         values.put(
-            "packageName",
+                "packageName",
-            expectedPackageName + ":privileged_process0");
+                expectedPackageName + ":privileged_process0");
         final BatteryDiffEntry entry =
-            createBatteryDiffEntry(10, new BatteryHistEntry(values));
+                createBatteryDiffEntry(10, new BatteryHistEntry(values));
 
         assertThat(entry.getPackageName()).isEqualTo(expectedPackageName);
     }
@@ -441,21 +451,21 @@ public final class BatteryDiffEntryTest {
         values.put("isHidden", isHidden);
         values.put("uid", uid);
         return new BatteryDiffEntry(
-            mContext,
+                mContext,
-            /*foregroundUsageTimeInMs=*/ 0,
+                /*foregroundUsageTimeInMs=*/ 0,
-            /*backgroundUsageTimeInMs=*/ 0,
+                /*backgroundUsageTimeInMs=*/ 0,
-            /*consumePower=*/ 0,
+                /*consumePower=*/ 0,
-            new BatteryHistEntry(values));
+                new BatteryHistEntry(values));
     }
 
     private BatteryDiffEntry createBatteryDiffEntry(
-        double consumePower, BatteryHistEntry batteryHistEntry) {
+            double consumePower, BatteryHistEntry batteryHistEntry) {
         final BatteryDiffEntry entry = new BatteryDiffEntry(
-            mContext,
+                mContext,
-            /*foregroundUsageTimeInMs=*/ 0,
+                /*foregroundUsageTimeInMs=*/ 0,
-            /*backgroundUsageTimeInMs=*/ 0,
+                /*backgroundUsageTimeInMs=*/ 0,
-            consumePower,
+                consumePower,
-            batteryHistEntry);
+                batteryHistEntry);
         entry.setTotalConsumePower(100.0);
         return entry;
     }
@@ -468,20 +478,20 @@ public final class BatteryDiffEntryTest {
 
     private BatteryDiffEntry createBatteryDiffEntry(Drawable drawable) throws Exception {
         final ContentValues values = getContentValuesWithType(
-            ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
+                ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
         values.put("uid", 1001);
         values.put("packageName", "com.a.b.c");
         final BatteryHistEntry batteryHistEntry = new BatteryHistEntry(values);
-        doReturn(drawable).when(mockPackageManager).getDefaultActivityIcon();
+        doReturn(drawable).when(mMockPackageManager).getDefaultActivityIcon();
-        doReturn(null).when(mockPackageManager).getApplicationInfo("com.a.b.c", 0);
+        doReturn(null).when(mMockPackageManager).getApplicationInfo("com.a.b.c", 0);
-        doReturn(new String[] {"com.a.b.c"}).when(mockPackageManager)
+        doReturn(new String[]{"com.a.b.c"}).when(mMockPackageManager)
-            .getPackagesForUid(1001);
+                .getPackagesForUid(1001);
         return createBatteryDiffEntry(10, batteryHistEntry);
     }
 
     private void mockConstantState(Drawable drawable) {
-        doReturn(mockConstantState).when(drawable).getConstantState();
+        doReturn(mMockConstantState).when(drawable).getConstantState();
-        doReturn(drawable).when(mockConstantState).newDrawable();
+        doReturn(drawable).when(mMockConstantState).newDrawable();
     }
 
     @Implements(UserHandle.class)

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BatteryEntryTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.google.common.truth.Truth.assertThat;
 
@@ -37,7 +37,8 @@ import android.os.UserBatteryConsumer;
 import android.os.UserManager;
 
 import com.android.settings.R;
-import com.android.settings.fuelgauge.BatteryEntry.NameAndIcon;
+import com.android.settings.fuelgauge.BatteryUtils;
+import com.android.settings.fuelgauge.batteryusage.BatteryEntry.NameAndIcon;
 
 import org.junit.Before;
 import org.junit.Rule;
@@ -62,31 +63,36 @@ public class BatteryEntryTest {
     private static final String HIGH_DRAIN_PACKAGE = "com.android.test.screen";
     private static final String ANDROID_PACKAGE = "android";
 
-    @Rule public MockitoRule mocks = MockitoJUnit.rule();
+    @Rule
+    public MockitoRule mocks = MockitoJUnit.rule();
 
     @Mock(answer = Answers.RETURNS_DEEP_STUBS)
     private Context mMockContext;
     private Context mContext;
-    @Mock private Handler mockHandler;
+    @Mock
-    @Mock private PackageManager mockPackageManager;
+    private Handler mMockHandler;
-    @Mock private UserManager mockUserManager;
+    @Mock
-    @Mock private UidBatteryConsumer mUidBatteryConsumer;
+    private PackageManager mMockPackageManager;
+    @Mock
+    private UserManager mMockUserManager;
+    @Mock
+    private UidBatteryConsumer mUidBatteryConsumer;
 
     @Before
     public void stubContextToReturnMockPackageManager() {
         mContext = spy(RuntimeEnvironment.application);
-        when(mMockContext.getPackageManager()).thenReturn(mockPackageManager);
+        when(mMockContext.getPackageManager()).thenReturn(mMockPackageManager);
     }
 
     @Before
     public void stubPackageManagerToReturnAppPackageAndName() throws NameNotFoundException {
-        when(mockPackageManager.getApplicationInfo(anyString(), eq(0) /* no flags */))
+        when(mMockPackageManager.getApplicationInfo(anyString(), eq(0) /* no flags */))
                 .thenAnswer(invocation -> {
                     ApplicationInfo info = new ApplicationInfo();
                     info.packageName = invocation.getArgument(0);
                     return info;
                 });
-        when(mockPackageManager.getApplicationLabel(any(ApplicationInfo.class)))
+        when(mMockPackageManager.getApplicationLabel(any(ApplicationInfo.class)))
                 .thenAnswer(invocation -> LABEL_PREFIX
                         + ((ApplicationInfo) invocation.getArgument(0)).packageName);
     }
@@ -96,7 +102,7 @@ public class BatteryEntryTest {
         UidBatteryConsumer consumer = mock(UidBatteryConsumer.class);
         when(consumer.getUid()).thenReturn(APP_UID);
         when(consumer.getPackageWithHighestDrain()).thenReturn(highDrainPackage);
-        return new BatteryEntry(mMockContext, mockHandler, mockUserManager,
+        return new BatteryEntry(mMockContext, mMockHandler, mMockUserManager,
                 consumer, false, APP_UID, packages, packageName);
     }
 
@@ -111,7 +117,7 @@ public class BatteryEntryTest {
     private BatteryEntry createUserBatteryConsumer(int userId) {
         UserBatteryConsumer consumer = mock(UserBatteryConsumer.class);
         when(consumer.getUserId()).thenReturn(userId);
-        return new BatteryEntry(mMockContext, mockHandler, mockUserManager,
+        return new BatteryEntry(mMockContext, mMockHandler, mMockUserManager,
                 consumer, false, 0, null, null);
     }
 
@@ -127,7 +133,7 @@ public class BatteryEntryTest {
     @Test
     public void batteryEntryForApp_shouldSetLabelAsPackageName_whenPackageCannotBeFound()
             throws Exception {
-        when(mockPackageManager.getApplicationInfo(APP_DEFAULT_PACKAGE_NAME, 0 /* no flags */))
+        when(mMockPackageManager.getApplicationInfo(APP_DEFAULT_PACKAGE_NAME, 0 /* no flags */))
                 .thenThrow(new NameNotFoundException());
 
         BatteryEntry entry = createBatteryEntryForApp(null, APP_DEFAULT_PACKAGE_NAME, null);
@@ -137,7 +143,7 @@ public class BatteryEntryTest {
 
     @Test
     public void batteryEntryForApp_shouldSetHighestDrainPackage_whenPackagesCannotBeFoundForUid() {
-        when(mockPackageManager.getPackagesForUid(APP_UID)).thenReturn(null);
+        when(mMockPackageManager.getPackagesForUid(APP_UID)).thenReturn(null);
 
         BatteryEntry entry = createBatteryEntryForApp(null, null, HIGH_DRAIN_PACKAGE);
 
@@ -147,7 +153,7 @@ public class BatteryEntryTest {
     @Test
     public void batteryEntryForApp_shouldSetHighestDrainPackage_whenMultiplePackagesFoundForUid() {
         BatteryEntry entry = createBatteryEntryForApp(
-                new String[] {APP_DEFAULT_PACKAGE_NAME, "package2", "package3"}, null,
+                new String[]{APP_DEFAULT_PACKAGE_NAME, "package2", "package3"}, null,
                 HIGH_DRAIN_PACKAGE);
 
         assertThat(entry.getLabel()).isEqualTo(LABEL_PREFIX + HIGH_DRAIN_PACKAGE);
@@ -176,8 +182,8 @@ public class BatteryEntryTest {
         when(mUidBatteryConsumer.getTimeInStateMs(UidBatteryConsumer.STATE_FOREGROUND))
                 .thenReturn(100L);
 
-        final BatteryEntry entry = new BatteryEntry(RuntimeEnvironment.application, mockHandler,
+        final BatteryEntry entry = new BatteryEntry(RuntimeEnvironment.application, mMockHandler,
-                mockUserManager, mUidBatteryConsumer, false, 0, null, null);
+                mMockUserManager, mUidBatteryConsumer, false, 0, null, null);
 
         assertThat(entry.getTimeInForegroundMs()).isEqualTo(100L);
     }
@@ -195,8 +201,8 @@ public class BatteryEntryTest {
         when(mUidBatteryConsumer.getTimeInStateMs(UidBatteryConsumer.STATE_BACKGROUND))
                 .thenReturn(100L);
 
-        final BatteryEntry entry = new BatteryEntry(RuntimeEnvironment.application, mockHandler,
+        final BatteryEntry entry = new BatteryEntry(RuntimeEnvironment.application, mMockHandler,
-                mockUserManager, mUidBatteryConsumer, false, 0, null, null);
+                mMockUserManager, mUidBatteryConsumer, false, 0, null, null);
 
         assertThat(entry.getTimeInBackgroundMs()).isEqualTo(100L);
     }
@@ -247,7 +253,7 @@ public class BatteryEntryTest {
 
     @Test
     public void getKey_UserBatteryConsumer_returnUserId() {
-        doReturn(mockUserManager).when(mMockContext).getSystemService(UserManager.class);
+        doReturn(mMockUserManager).when(mMockContext).getSystemService(UserManager.class);
         final BatteryEntry entry = createUserBatteryConsumer(2);
         final String key = entry.getKey();
         assertThat(key).isEqualTo("U|2");
@@ -256,8 +262,8 @@ public class BatteryEntryTest {
     @Test
     public void getNameAndIconFromUserId_nullUserInfo_returnDefaultNameAndIcon() {
         final int userId = 1001;
-        doReturn(mockUserManager).when(mContext).getSystemService(UserManager.class);
+        doReturn(mMockUserManager).when(mContext).getSystemService(UserManager.class);
-        doReturn(null).when(mockUserManager).getUserInfo(userId);
+        doReturn(null).when(mMockUserManager).getUserInfo(userId);
 
         final NameAndIcon nameAndIcon = BatteryEntry.getNameAndIconFromUserId(
                 mContext, userId);

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BatteryHistEntryTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.google.common.truth.Truth.assertThat;
 
@@ -38,7 +38,7 @@ import java.util.TimeZone;
 public final class BatteryHistEntryTest {
 
     @Mock
-    private BatteryEntry mockBatteryEntry;
+    private BatteryEntry mMockBatteryEntry;
     @Mock
     private BatteryUsageStats mBatteryUsageStats;
 
@@ -50,33 +50,33 @@ public final class BatteryHistEntryTest {
     @Test
     public void testConstructor_contentValues_returnsExpectedResult() {
         final int expectedType = 3;
-        when(mockBatteryEntry.getUid()).thenReturn(1001);
+        when(mMockBatteryEntry.getUid()).thenReturn(1001);
-        when(mockBatteryEntry.getLabel()).thenReturn("Settings");
+        when(mMockBatteryEntry.getLabel()).thenReturn("Settings");
-        when(mockBatteryEntry.getDefaultPackageName())
+        when(mMockBatteryEntry.getDefaultPackageName())
-            .thenReturn("com.google.android.settings.battery");
+                .thenReturn("com.google.android.settings.battery");
-        when(mockBatteryEntry.isHidden()).thenReturn(true);
+        when(mMockBatteryEntry.isHidden()).thenReturn(true);
         when(mBatteryUsageStats.getConsumedPower()).thenReturn(5.1);
-        when(mockBatteryEntry.getConsumedPower()).thenReturn(1.1);
+        when(mMockBatteryEntry.getConsumedPower()).thenReturn(1.1);
-        mockBatteryEntry.mPercent = 0.3;
+        mMockBatteryEntry.mPercent = 0.3;
-        when(mockBatteryEntry.getTimeInForegroundMs()).thenReturn(1234L);
+        when(mMockBatteryEntry.getTimeInForegroundMs()).thenReturn(1234L);
-        when(mockBatteryEntry.getTimeInBackgroundMs()).thenReturn(5689L);
+        when(mMockBatteryEntry.getTimeInBackgroundMs()).thenReturn(5689L);
-        when(mockBatteryEntry.getPowerComponentId()).thenReturn(expectedType);
+        when(mMockBatteryEntry.getPowerComponentId()).thenReturn(expectedType);
-        when(mockBatteryEntry.getConsumerType())
+        when(mMockBatteryEntry.getConsumerType())
-            .thenReturn(ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
+                .thenReturn(ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
         final ContentValues values =
-            ConvertUtils.convert(
+                ConvertUtils.convert(
-                mockBatteryEntry,
+                        mMockBatteryEntry,
-                mBatteryUsageStats,
+                        mBatteryUsageStats,
-                /*batteryLevel=*/ 12,
+                        /*batteryLevel=*/ 12,
-                /*batteryStatus=*/ BatteryManager.BATTERY_STATUS_FULL,
+                        /*batteryStatus=*/ BatteryManager.BATTERY_STATUS_FULL,
-                /*batteryHealth=*/ BatteryManager.BATTERY_HEALTH_COLD,
+                        /*batteryHealth=*/ BatteryManager.BATTERY_HEALTH_COLD,
-                /*bootTimestamp=*/ 101L,
+                        /*bootTimestamp=*/ 101L,
-                /*timestamp=*/ 10001L);
+                        /*timestamp=*/ 10001L);
 
         assertBatteryHistEntry(
-            new BatteryHistEntry(values),
+                new BatteryHistEntry(values),
-            /*drainType=*/ expectedType,
+                /*drainType=*/ expectedType,
-            /*percentOfTotal=*/ mockBatteryEntry.mPercent);
+                /*percentOfTotal=*/ mMockBatteryEntry.mPercent);
     }
 
     @Test
@@ -88,22 +88,22 @@ public final class BatteryHistEntryTest {
     @Test
     public void testConstructor_cursor_returnsExpectedResult() {
         assertBatteryHistEntry(
-            createBatteryHistEntry(
+                createBatteryHistEntry(
-                /*bootTimestamp=*/ 101L,
+                        /*bootTimestamp=*/ 101L,
-                /*timestamp=*/ 10001L,
+                        /*timestamp=*/ 10001L,
-                /*totalPower=*/ 5.1,
+                        /*totalPower=*/ 5.1,
-                /*consumePower=*/ 1.1,
+                        /*consumePower=*/ 1.1,
-                /*foregroundUsageTimeInMs=*/ 1234L,
+                        /*foregroundUsageTimeInMs=*/ 1234L,
-                /*backgroundUsageTimeInMs=*/ 5689L,
+                        /*backgroundUsageTimeInMs=*/ 5689L,
-                /*batteryLevel=*/ 12),
+                        /*batteryLevel=*/ 12),
-            /*drainType=*/ 3,
+                /*drainType=*/ 3,
-            /*percentOfTotal=*/ 0.3);
+                /*percentOfTotal=*/ 0.3);
     }
 
     @Test
     public void testGetKey_consumerUidType_returnExpectedString() {
         final ContentValues values = getContentValuesWithType(
-            ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
+                ConvertUtils.CONSUMER_TYPE_UID_BATTERY);
         values.put(BatteryHistEntry.KEY_UID, 3);
         final BatteryHistEntry batteryHistEntry = new BatteryHistEntry(values);
 
@@ -113,7 +113,7 @@ public final class BatteryHistEntryTest {
     @Test
     public void testGetKey_consumerUserType_returnExpectedString() {
         final ContentValues values = getContentValuesWithType(
-            ConvertUtils.CONSUMER_TYPE_USER_BATTERY);
+                ConvertUtils.CONSUMER_TYPE_USER_BATTERY);
         values.put(BatteryHistEntry.KEY_USER_ID, 2);
         final BatteryHistEntry batteryHistEntry = new BatteryHistEntry(values);
 
@@ -123,7 +123,7 @@ public final class BatteryHistEntryTest {
     @Test
     public void testGetKey_consumerSystemType_returnExpectedString() {
         final ContentValues values = getContentValuesWithType(
-            ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
+                ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
         values.put(BatteryHistEntry.KEY_DRAIN_TYPE, 1);
         final BatteryHistEntry batteryHistEntry = new BatteryHistEntry(values);
 
@@ -133,31 +133,31 @@ public final class BatteryHistEntryTest {
     @Test
     public void testIsAppEntry_returnExpectedResult() {
         assertThat(createEntry(ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY).isAppEntry())
-            .isFalse();
+                .isFalse();
         assertThat(createEntry(ConvertUtils.CONSUMER_TYPE_USER_BATTERY).isAppEntry())
-            .isFalse();
+                .isFalse();
         assertThat(createEntry(ConvertUtils.CONSUMER_TYPE_UID_BATTERY).isAppEntry())
-            .isTrue();
+                .isTrue();
     }
 
     @Test
     public void testIsUserEntry_returnExpectedResult() {
         assertThat(createEntry(ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY).isUserEntry())
-            .isFalse();
+                .isFalse();
         assertThat(createEntry(ConvertUtils.CONSUMER_TYPE_USER_BATTERY).isUserEntry())
-            .isTrue();
+                .isTrue();
         assertThat(createEntry(ConvertUtils.CONSUMER_TYPE_UID_BATTERY).isUserEntry())
-            .isFalse();
+                .isFalse();
     }
 
     @Test
     public void testIsSystemEntry_returnExpectedResult() {
         assertThat(createEntry(ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY).isSystemEntry())
-            .isTrue();
+                .isTrue();
         assertThat(createEntry(ConvertUtils.CONSUMER_TYPE_USER_BATTERY).isSystemEntry())
-            .isFalse();
+                .isFalse();
         assertThat(createEntry(ConvertUtils.CONSUMER_TYPE_UID_BATTERY).isSystemEntry())
-            .isFalse();
+                .isFalse();
     }
 
     @Test
@@ -167,39 +167,39 @@ public final class BatteryHistEntryTest {
         final long lowerTimestamp = 100L;
         final double ratio = 0.5;
         final BatteryHistEntry lowerHistEntry = createBatteryHistEntry(
-            /*bootTimestamp=*/ 1000L,
+                /*bootTimestamp=*/ 1000L,
-            lowerTimestamp,
+                lowerTimestamp,
-            /*totalPower=*/ 50,
+                /*totalPower=*/ 50,
-            /*consumePower=*/ 10,
+                /*consumePower=*/ 10,
-            /*foregroundUsageTimeInMs=*/ 100,
+                /*foregroundUsageTimeInMs=*/ 100,
-            /*backgroundUsageTimeInMs=*/ 200,
+                /*backgroundUsageTimeInMs=*/ 200,
-            /*batteryLevel=*/ 90);
+                /*batteryLevel=*/ 90);
         final BatteryHistEntry upperHistEntry = createBatteryHistEntry(
-            /*bootTimestamp=*/ 1200L,
+                /*bootTimestamp=*/ 1200L,
-            upperTimestamp,
+                upperTimestamp,
-            /*totalPower=*/ 80,
+                /*totalPower=*/ 80,
-            /*consumePower=*/ 20,
+                /*consumePower=*/ 20,
-            /*foregroundUsageTimeInMs=*/ 200,
+                /*foregroundUsageTimeInMs=*/ 200,
-            /*backgroundUsageTimeInMs=*/ 300,
+                /*backgroundUsageTimeInMs=*/ 300,
-            /*batteryLevel=*/ 80);
+                /*batteryLevel=*/ 80);
 
         final BatteryHistEntry newEntry =
-            BatteryHistEntry.interpolate(
+                BatteryHistEntry.interpolate(
-                slotTimestamp,
+                        slotTimestamp,
-                upperTimestamp,
+                        upperTimestamp,
-                ratio,
+                        ratio,
-                lowerHistEntry,
+                        lowerHistEntry,
-                upperHistEntry);
+                        upperHistEntry);
 
         assertBatteryHistEntry(
-            newEntry, 3, upperHistEntry.mPercentOfTotal,
+                newEntry, 3, upperHistEntry.mPercentOfTotal,
-            /*bootTimestamp=*/ 1200 - 100,
+                /*bootTimestamp=*/ 1200 - 100,
-            /*timestamp=*/ slotTimestamp,
+                /*timestamp=*/ slotTimestamp,
-            /*totalPower=*/ 50 + 0.5 * (80 - 50),
+                /*totalPower=*/ 50 + 0.5 * (80 - 50),
-            /*consumePower=*/ 10 + 0.5 * (20 - 10),
+                /*consumePower=*/ 10 + 0.5 * (20 - 10),
-            /*foregroundUsageTimeInMs=*/ Math.round(100 + 0.5 * (200 - 100)),
+                /*foregroundUsageTimeInMs=*/ Math.round(100 + 0.5 * (200 - 100)),
-            /*backgroundUsageTimeInMs=*/ Math.round(200 + 0.5 * (300 - 200)),
+                /*backgroundUsageTimeInMs=*/ Math.round(200 + 0.5 * (300 - 200)),
-            /*batteryLevel=*/ (int) Math.round(90 + 0.5 * (80 - 90)));
+                /*batteryLevel=*/ (int) Math.round(90 + 0.5 * (80 - 90)));
     }
 
     @Test
@@ -209,31 +209,31 @@ public final class BatteryHistEntryTest {
         final long lowerTimestamp = 100L;
         final double ratio = 0.5;
         final BatteryHistEntry upperHistEntry = createBatteryHistEntry(
-            /*bootTimestamp=*/ 1200L,
+                /*bootTimestamp=*/ 1200L,
-            upperTimestamp,
+                upperTimestamp,
-            /*totalPower=*/ 80,
+                /*totalPower=*/ 80,
-            /*consumePower=*/ 20,
+                /*consumePower=*/ 20,
-            /*foregroundUsageTimeInMs=*/ 200,
+                /*foregroundUsageTimeInMs=*/ 200,
-            /*backgroundUsageTimeInMs=*/ 300,
+                /*backgroundUsageTimeInMs=*/ 300,
-            /*batteryLevel=*/ 80);
+                /*batteryLevel=*/ 80);
 
         final BatteryHistEntry newEntry =
-            BatteryHistEntry.interpolate(
+                BatteryHistEntry.interpolate(
-                slotTimestamp,
+                        slotTimestamp,
-                upperTimestamp,
+                        upperTimestamp,
-                ratio,
+                        ratio,
-                /*lowerHistEntry=*/ null,
+                        /*lowerHistEntry=*/ null,
-                upperHistEntry);
+                        upperHistEntry);
 
         assertBatteryHistEntry(
-            newEntry, 3, upperHistEntry.mPercentOfTotal,
+                newEntry, 3, upperHistEntry.mPercentOfTotal,
-            /*bootTimestamp=*/ 1200 - 100,
+                /*bootTimestamp=*/ 1200 - 100,
-            /*timestamp=*/ slotTimestamp,
+                /*timestamp=*/ slotTimestamp,
-            /*totalPower=*/ 0.5 * 80,
+                /*totalPower=*/ 0.5 * 80,
-            /*consumePower=*/ 0.5 * 20,
+                /*consumePower=*/ 0.5 * 20,
-            /*foregroundUsageTimeInMs=*/ Math.round(0.5 * 200),
+                /*foregroundUsageTimeInMs=*/ Math.round(0.5 * 200),
-            /*backgroundUsageTimeInMs=*/ Math.round(0.5 * 300),
+                /*backgroundUsageTimeInMs=*/ Math.round(0.5 * 300),
-            /*batteryLevel=*/ upperHistEntry.mBatteryLevel);
+                /*batteryLevel=*/ upperHistEntry.mBatteryLevel);
     }
 
     private static BatteryHistEntry createEntry(int consumerType) {
@@ -243,21 +243,21 @@ public final class BatteryHistEntryTest {
     private static ContentValues getContentValuesWithType(int consumerType) {
         final ContentValues values = new ContentValues();
         values.put(BatteryHistEntry.KEY_CONSUMER_TYPE,
-            Integer.valueOf(consumerType));
+                Integer.valueOf(consumerType));
         return values;
     }
 
     private void assertBatteryHistEntry(
             BatteryHistEntry entry, int drainType, double percentOfTotal) {
         assertBatteryHistEntry(
-            entry, drainType, percentOfTotal,
+                entry, drainType, percentOfTotal,
-            /*bootTimestamp=*/ 101L,
+                /*bootTimestamp=*/ 101L,
-            /*timestamp=*/ 10001L,
+                /*timestamp=*/ 10001L,
-            /*totalPower=*/ 5.1,
+                /*totalPower=*/ 5.1,
-            /*consumePower=*/ 1.1,
+                /*consumePower=*/ 1.1,
-            /*foregroundUsageTimeInMs=*/ 1234L,
+                /*foregroundUsageTimeInMs=*/ 1234L,
-            /*backgroundUsageTimeInMs=*/ 5689L,
+                /*backgroundUsageTimeInMs=*/ 5689L,
-            /*batteryLevel=*/ 12);
+                /*batteryLevel=*/ 12);
     }
 
     private void assertBatteryHistEntry(
@@ -276,7 +276,7 @@ public final class BatteryHistEntryTest {
         assertThat(entry.mUserId).isEqualTo(UserHandle.getUserId(1001));
         assertThat(entry.mAppLabel).isEqualTo("Settings");
         assertThat(entry.mPackageName)
-            .isEqualTo("com.google.android.settings.battery");
+                .isEqualTo("com.google.android.settings.battery");
         assertThat(entry.mIsHidden).isTrue();
         assertThat(entry.mBootTimestamp).isEqualTo(bootTimestamp);
         assertThat(entry.mTimestamp).isEqualTo(timestamp);
@@ -288,12 +288,12 @@ public final class BatteryHistEntryTest {
         assertThat(entry.mBackgroundUsageTimeInMs).isEqualTo(backgroundUsageTimeInMs);
         assertThat(entry.mDrainType).isEqualTo(drainType);
         assertThat(entry.mConsumerType)
-            .isEqualTo(ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
+                .isEqualTo(ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
         assertThat(entry.mBatteryLevel).isEqualTo(batteryLevel);
         assertThat(entry.mBatteryStatus)
-            .isEqualTo(BatteryManager.BATTERY_STATUS_FULL);
+                .isEqualTo(BatteryManager.BATTERY_STATUS_FULL);
         assertThat(entry.mBatteryHealth)
-            .isEqualTo(BatteryManager.BATTERY_HEALTH_COLD);
+                .isEqualTo(BatteryManager.BATTERY_HEALTH_COLD);
     }
 
     private BatteryHistEntry createBatteryHistEntry(
@@ -305,7 +305,7 @@ public final class BatteryHistEntryTest {
             long backgroundUsageTimeInMs,
             int batteryLevel) {
         final MatrixCursor cursor = new MatrixCursor(
-            new String[] {
+            new String[]{
                 BatteryHistEntry.KEY_UID,
                 BatteryHistEntry.KEY_USER_ID,
                 BatteryHistEntry.KEY_APP_LABEL,
@@ -325,7 +325,7 @@ public final class BatteryHistEntryTest {
                 BatteryHistEntry.KEY_BATTERY_STATUS,
                 BatteryHistEntry.KEY_BATTERY_HEALTH});
         cursor.addRow(
-            new Object[] {
+            new Object[]{
                 Long.valueOf(1001),
                 Long.valueOf(UserHandle.getUserId(1001)),
                 "Settings",

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BatteryHistoryLoaderTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -13,18 +13,16 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.google.common.truth.Truth.assertThat;
+
 import static org.mockito.Mockito.doReturn;
 
 import android.content.Context;
 
 import com.android.settings.testutils.FakeFeatureFactory;
 
-import java.util.HashMap;
-import java.util.Map;
-
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -32,6 +30,9 @@ import org.mockito.MockitoAnnotations;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
 
+import java.util.HashMap;
+import java.util.Map;
+
 @RunWith(RobolectricTestRunner.class)
 public final class BatteryHistoryLoaderTest {
 

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BatteryHistoryPreferenceTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.google.common.truth.Truth.assertThat;
 
@@ -31,6 +31,7 @@ import android.widget.TextView;
 import androidx.preference.PreferenceViewHolder;
 
 import com.android.settings.R;
+import com.android.settings.fuelgauge.BatteryInfo;
 import com.android.settings.widget.UsageView;
 
 import org.junit.Before;

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BatteryUsageStatsLoaderTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.google.common.truth.Truth.assertThat;
 

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/ConvertUtilsTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.google.common.truth.Truth.assertThat;
 
@@ -27,6 +27,7 @@ import android.os.BatteryUsageStats;
 import android.os.LocaleList;
 import android.os.UserHandle;
 
+import com.android.settings.fuelgauge.PowerUsageFeatureProvider;
 import com.android.settings.testutils.FakeFeatureFactory;
 
 import org.junit.Before;
@@ -37,7 +38,6 @@ import org.mockito.MockitoAnnotations;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
 
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -54,7 +54,7 @@ public final class ConvertUtilsTest {
     @Mock
     private BatteryUsageStats mBatteryUsageStats;
     @Mock
-    private BatteryEntry mockBatteryEntry;
+    private BatteryEntry mMockBatteryEntry;
 
     private FakeFeatureFactory mFeatureFactory;
     private PowerUsageFeatureProvider mPowerUsageFeatureProvider;
@@ -70,115 +70,116 @@ public final class ConvertUtilsTest {
     @Test
     public void convert_returnsExpectedContentValues() {
         final int expectedType = 3;
-        when(mockBatteryEntry.getUid()).thenReturn(1001);
+        when(mMockBatteryEntry.getUid()).thenReturn(1001);
-        when(mockBatteryEntry.getLabel()).thenReturn("Settings");
+        when(mMockBatteryEntry.getLabel()).thenReturn("Settings");
-        when(mockBatteryEntry.getDefaultPackageName())
+        when(mMockBatteryEntry.getDefaultPackageName())
-            .thenReturn("com.google.android.settings.battery");
+                .thenReturn("com.google.android.settings.battery");
-        when(mockBatteryEntry.isHidden()).thenReturn(true);
+        when(mMockBatteryEntry.isHidden()).thenReturn(true);
         when(mBatteryUsageStats.getConsumedPower()).thenReturn(5.1);
-        when(mockBatteryEntry.getConsumedPower()).thenReturn(1.1);
+        when(mMockBatteryEntry.getConsumedPower()).thenReturn(1.1);
-        mockBatteryEntry.mPercent = 0.3;
+        mMockBatteryEntry.mPercent = 0.3;
-        when(mockBatteryEntry.getTimeInForegroundMs()).thenReturn(1234L);
+        when(mMockBatteryEntry.getTimeInForegroundMs()).thenReturn(1234L);
-        when(mockBatteryEntry.getTimeInBackgroundMs()).thenReturn(5689L);
+        when(mMockBatteryEntry.getTimeInBackgroundMs()).thenReturn(5689L);
-        when(mockBatteryEntry.getPowerComponentId()).thenReturn(expectedType);
+        when(mMockBatteryEntry.getPowerComponentId()).thenReturn(expectedType);
-        when(mockBatteryEntry.getConsumerType())
+        when(mMockBatteryEntry.getConsumerType())
-            .thenReturn(ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
+                .thenReturn(ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
 
         final ContentValues values =
-            ConvertUtils.convert(
+                ConvertUtils.convert(
-                mockBatteryEntry,
+                        mMockBatteryEntry,
-                mBatteryUsageStats,
+                        mBatteryUsageStats,
-                /*batteryLevel=*/ 12,
+                        /*batteryLevel=*/ 12,
-                /*batteryStatus=*/ BatteryManager.BATTERY_STATUS_FULL,
+                        /*batteryStatus=*/ BatteryManager.BATTERY_STATUS_FULL,
-                /*batteryHealth=*/ BatteryManager.BATTERY_HEALTH_COLD,
+                        /*batteryHealth=*/ BatteryManager.BATTERY_HEALTH_COLD,
-                /*bootTimestamp=*/ 101L,
+                        /*bootTimestamp=*/ 101L,
-                /*timestamp=*/ 10001L);
+                        /*timestamp=*/ 10001L);
 
         assertThat(values.getAsLong(BatteryHistEntry.KEY_UID)).isEqualTo(1001L);
         assertThat(values.getAsLong(BatteryHistEntry.KEY_USER_ID))
-            .isEqualTo(UserHandle.getUserId(1001));
+                .isEqualTo(UserHandle.getUserId(1001));
         assertThat(values.getAsString(BatteryHistEntry.KEY_APP_LABEL))
-            .isEqualTo("Settings");
+                .isEqualTo("Settings");
         assertThat(values.getAsString(BatteryHistEntry.KEY_PACKAGE_NAME))
-            .isEqualTo("com.google.android.settings.battery");
+                .isEqualTo("com.google.android.settings.battery");
         assertThat(values.getAsBoolean(BatteryHistEntry.KEY_IS_HIDDEN)).isTrue();
         assertThat(values.getAsLong(BatteryHistEntry.KEY_BOOT_TIMESTAMP))
-            .isEqualTo(101L);
+                .isEqualTo(101L);
         assertThat(values.getAsLong(BatteryHistEntry.KEY_TIMESTAMP)).isEqualTo(10001L);
         assertThat(values.getAsString(BatteryHistEntry.KEY_ZONE_ID))
-            .isEqualTo(TimeZone.getDefault().getID());
+                .isEqualTo(TimeZone.getDefault().getID());
         assertThat(values.getAsDouble(BatteryHistEntry.KEY_TOTAL_POWER)).isEqualTo(5.1);
         assertThat(values.getAsDouble(BatteryHistEntry.KEY_CONSUME_POWER)).isEqualTo(1.1);
         assertThat(values.getAsDouble(BatteryHistEntry.KEY_PERCENT_OF_TOTAL)).isEqualTo(0.3);
         assertThat(values.getAsLong(BatteryHistEntry.KEY_FOREGROUND_USAGE_TIME))
-            .isEqualTo(1234L);
+                .isEqualTo(1234L);
         assertThat(values.getAsLong(BatteryHistEntry.KEY_BACKGROUND_USAGE_TIME))
-            .isEqualTo(5689L);
+                .isEqualTo(5689L);
         assertThat(values.getAsInteger(BatteryHistEntry.KEY_DRAIN_TYPE)).isEqualTo(expectedType);
         assertThat(values.getAsInteger(BatteryHistEntry.KEY_CONSUMER_TYPE))
-            .isEqualTo(ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
+                .isEqualTo(ConvertUtils.CONSUMER_TYPE_SYSTEM_BATTERY);
         assertThat(values.getAsInteger(BatteryHistEntry.KEY_BATTERY_LEVEL)).isEqualTo(12);
         assertThat(values.getAsInteger(BatteryHistEntry.KEY_BATTERY_STATUS))
-            .isEqualTo(BatteryManager.BATTERY_STATUS_FULL);
+                .isEqualTo(BatteryManager.BATTERY_STATUS_FULL);
         assertThat(values.getAsInteger(BatteryHistEntry.KEY_BATTERY_HEALTH))
-            .isEqualTo(BatteryManager.BATTERY_HEALTH_COLD);
+                .isEqualTo(BatteryManager.BATTERY_HEALTH_COLD);
     }
 
     @Test
     public void convert_nullBatteryEntry_returnsExpectedContentValues() {
         final ContentValues values =
-            ConvertUtils.convert(
+                ConvertUtils.convert(
-                /*entry=*/ null,
+                        /*entry=*/ null,
-                /*batteryUsageStats=*/ null,
+                        /*batteryUsageStats=*/ null,
-                /*batteryLevel=*/ 12,
+                        /*batteryLevel=*/ 12,
-                /*batteryStatus=*/ BatteryManager.BATTERY_STATUS_FULL,
+                        /*batteryStatus=*/ BatteryManager.BATTERY_STATUS_FULL,
-                /*batteryHealth=*/ BatteryManager.BATTERY_HEALTH_COLD,
+                        /*batteryHealth=*/ BatteryManager.BATTERY_HEALTH_COLD,
-                /*bootTimestamp=*/ 101L,
+                        /*bootTimestamp=*/ 101L,
-                /*timestamp=*/ 10001L);
+                        /*timestamp=*/ 10001L);
 
         assertThat(values.getAsLong(BatteryHistEntry.KEY_BOOT_TIMESTAMP))
-            .isEqualTo(101L);
+                .isEqualTo(101L);
         assertThat(values.getAsLong(BatteryHistEntry.KEY_TIMESTAMP))
-            .isEqualTo(10001L);
+                .isEqualTo(10001L);
         assertThat(values.getAsString(BatteryHistEntry.KEY_ZONE_ID))
-            .isEqualTo(TimeZone.getDefault().getID());
+                .isEqualTo(TimeZone.getDefault().getID());
         assertThat(values.getAsInteger(BatteryHistEntry.KEY_BATTERY_LEVEL)).isEqualTo(12);
         assertThat(values.getAsInteger(BatteryHistEntry.KEY_BATTERY_STATUS))
-            .isEqualTo(BatteryManager.BATTERY_STATUS_FULL);
+                .isEqualTo(BatteryManager.BATTERY_STATUS_FULL);
         assertThat(values.getAsInteger(BatteryHistEntry.KEY_BATTERY_HEALTH))
-            .isEqualTo(BatteryManager.BATTERY_HEALTH_COLD);
+                .isEqualTo(BatteryManager.BATTERY_HEALTH_COLD);
         assertThat(values.getAsString(BatteryHistEntry.KEY_PACKAGE_NAME))
-            .isEqualTo(ConvertUtils.FAKE_PACKAGE_NAME);
+                .isEqualTo(ConvertUtils.FAKE_PACKAGE_NAME);
     }
 
     @Test
     public void getIndexedUsageMap_nullOrEmptyHistoryMap_returnEmptyCollection() {
         final int timeSlotSize = 2;
-        final long[] batteryHistoryKeys = new long[] {101L, 102L, 103L, 104L, 105L};
+        final long[] batteryHistoryKeys = new long[]{101L, 102L, 103L, 104L, 105L};
 
         assertThat(ConvertUtils.getIndexedUsageMap(
                 mContext, timeSlotSize, batteryHistoryKeys,
                 /*batteryHistoryMap=*/ null, /*purgeLowPercentageAndFakeData=*/ true))
-            .isEmpty();
+                .isEmpty();
         assertThat(ConvertUtils.getIndexedUsageMap(
                 mContext, timeSlotSize, batteryHistoryKeys,
                 new HashMap<Long, Map<String, BatteryHistEntry>>(),
                 /*purgeLowPercentageAndFakeData=*/ true))
-            .isEmpty();
+                .isEmpty();
     }
+
     @Test
     public void getIndexedUsageMap_returnsExpectedResult() {
         // Creates the fake testing data.
         final int timeSlotSize = 2;
-        final long[] batteryHistoryKeys = new long[] {101L, 102L, 103L, 104L, 105L};
+        final long[] batteryHistoryKeys = new long[]{101L, 102L, 103L, 104L, 105L};
         final Map<Long, Map<String, BatteryHistEntry>> batteryHistoryMap =
-            new HashMap<>();
+                new HashMap<>();
         final BatteryHistEntry fakeEntry = createBatteryHistEntry(
-            ConvertUtils.FAKE_PACKAGE_NAME, "fake_label", 0, 0L, 0L, 0L);
+                ConvertUtils.FAKE_PACKAGE_NAME, "fake_label", 0, 0L, 0L, 0L);
         // Adds the index = 0 data.
         Map<String, BatteryHistEntry> entryMap = new HashMap<>();
         BatteryHistEntry entry = createBatteryHistEntry(
-            "package1", "label1", 5.0, 1L, 10L, 20L);
+                "package1", "label1", 5.0, 1L, 10L, 20L);
         entryMap.put(entry.getKey(), entry);
         entryMap.put(fakeEntry.getKey(), fakeEntry);
         batteryHistoryMap.put(Long.valueOf(batteryHistoryKeys[0]), entryMap);
@@ -189,38 +190,38 @@ public final class ConvertUtilsTest {
         // Adds the index = 2 data.
         entryMap = new HashMap<>();
         entry = createBatteryHistEntry(
-            "package2", "label2", 10.0, 2L, 15L, 25L);
+                "package2", "label2", 10.0, 2L, 15L, 25L);
         entryMap.put(entry.getKey(), entry);
         entryMap.put(fakeEntry.getKey(), fakeEntry);
         batteryHistoryMap.put(Long.valueOf(batteryHistoryKeys[2]), entryMap);
         // Adds the index = 3 data.
         entryMap = new HashMap<>();
         entry = createBatteryHistEntry(
-            "package2", "label2", 15.0, 2L, 25L, 35L);
+                "package2", "label2", 15.0, 2L, 25L, 35L);
         entryMap.put(entry.getKey(), entry);
         entry = createBatteryHistEntry(
-            "package3", "label3", 5.0, 3L, 5L, 5L);
+                "package3", "label3", 5.0, 3L, 5L, 5L);
         entryMap.put(entry.getKey(), entry);
         entryMap.put(fakeEntry.getKey(), fakeEntry);
         batteryHistoryMap.put(Long.valueOf(batteryHistoryKeys[3]), entryMap);
         // Adds the index = 4 data.
         entryMap = new HashMap<>();
         entry = createBatteryHistEntry(
-            "package2", "label2", 30.0, 2L, 30L, 40L);
+                "package2", "label2", 30.0, 2L, 30L, 40L);
         entryMap.put(entry.getKey(), entry);
         entry = createBatteryHistEntry(
-            "package2", "label2", 75.0, 4L, 40L, 50L);
+                "package2", "label2", 75.0, 4L, 40L, 50L);
         entryMap.put(entry.getKey(), entry);
         entry = createBatteryHistEntry(
-            "package3", "label3", 5.0, 3L, 5L, 5L);
+                "package3", "label3", 5.0, 3L, 5L, 5L);
         entryMap.put(entry.getKey(), entry);
         entryMap.put(fakeEntry.getKey(), fakeEntry);
         batteryHistoryMap.put(Long.valueOf(batteryHistoryKeys[4]), entryMap);
 
         final Map<Integer, List<BatteryDiffEntry>> resultMap =
-            ConvertUtils.getIndexedUsageMap(
+                ConvertUtils.getIndexedUsageMap(
-                mContext, timeSlotSize, batteryHistoryKeys, batteryHistoryMap,
+                        mContext, timeSlotSize, batteryHistoryKeys, batteryHistoryMap,
-                /*purgeLowPercentageAndFakeData=*/ false);
+                        /*purgeLowPercentageAndFakeData=*/ false);
 
         assertThat(resultMap).hasSize(3);
         // Verifies the first timestamp result.
@@ -243,9 +244,9 @@ public final class ConvertUtilsTest {
         // Test getIndexedUsageMap() with purged data.
         ConvertUtils.PERCENTAGE_OF_TOTAL_THRESHOLD = 50;
         final Map<Integer, List<BatteryDiffEntry>> purgedResultMap =
-            ConvertUtils.getIndexedUsageMap(
+                ConvertUtils.getIndexedUsageMap(
-                mContext, timeSlotSize, batteryHistoryKeys, batteryHistoryMap,
+                        mContext, timeSlotSize, batteryHistoryKeys, batteryHistoryMap,
-                 /*purgeLowPercentageAndFakeData=*/ true);
+                        /*purgeLowPercentageAndFakeData=*/ true);
 
         assertThat(purgedResultMap).hasSize(3);
         // Verifies the first timestamp result.
@@ -260,7 +261,7 @@ public final class ConvertUtilsTest {
         assertThat(entryList).hasSize(1);
         // Verifies the fake data is cleared out.
         assertThat(entryList.get(0).getPackageName())
-            .isNotEqualTo(ConvertUtils.FAKE_PACKAGE_NAME);
+                .isNotEqualTo(ConvertUtils.FAKE_PACKAGE_NAME);
 
         // Adds lacked data into the battery history map.
         final int remainingSize = 25 - batteryHistoryKeys.length;
@@ -268,10 +269,10 @@ public final class ConvertUtilsTest {
             batteryHistoryMap.put(105L + index + 1, new HashMap<>());
         }
         when(mPowerUsageFeatureProvider.getBatteryHistory(mContext))
-            .thenReturn(batteryHistoryMap);
+                .thenReturn(batteryHistoryMap);
 
         final List<BatteryDiffEntry> batteryDiffEntryList =
-            BatteryChartPreferenceController.getBatteryLast24HrUsageData(mContext);
+                BatteryChartPreferenceController.getBatteryLast24HrUsageData(mContext);
 
         assertThat(batteryDiffEntryList).isNotEmpty();
         final BatteryDiffEntry resultEntry = batteryDiffEntryList.get(0);
@@ -281,11 +282,11 @@ public final class ConvertUtilsTest {
     @Test
     public void getIndexedUsageMap_usageTimeExceed_returnsExpectedResult() {
         final int timeSlotSize = 1;
-        final long[] batteryHistoryKeys = new long[] {101L, 102L, 103L};
+        final long[] batteryHistoryKeys = new long[]{101L, 102L, 103L};
         final Map<Long, Map<String, BatteryHistEntry>> batteryHistoryMap =
-            new HashMap<>();
+                new HashMap<>();
         final BatteryHistEntry fakeEntry = createBatteryHistEntry(
-            ConvertUtils.FAKE_PACKAGE_NAME, "fake_label", 0, 0L, 0L, 0L);
+                ConvertUtils.FAKE_PACKAGE_NAME, "fake_label", 0, 0L, 0L, 0L);
         // Adds the index = 0 data.
         Map<String, BatteryHistEntry> entryMap = new HashMap<>();
         entryMap.put(fakeEntry.getKey(), fakeEntry);
@@ -297,14 +298,14 @@ public final class ConvertUtilsTest {
         // Adds the index = 2 data.
         entryMap = new HashMap<>();
         final BatteryHistEntry entry = createBatteryHistEntry(
-            "package3", "label3", 500, 5L, 3600000L, 7200000L);
+                "package3", "label3", 500, 5L, 3600000L, 7200000L);
         entryMap.put(entry.getKey(), entry);
         batteryHistoryMap.put(Long.valueOf(batteryHistoryKeys[2]), entryMap);
 
         final Map<Integer, List<BatteryDiffEntry>> purgedResultMap =
-            ConvertUtils.getIndexedUsageMap(
+                ConvertUtils.getIndexedUsageMap(
-                mContext, timeSlotSize, batteryHistoryKeys, batteryHistoryMap,
+                        mContext, timeSlotSize, batteryHistoryKeys, batteryHistoryMap,
-                /*purgeLowPercentageAndFakeData=*/ true);
+                        /*purgeLowPercentageAndFakeData=*/ true);
 
         assertThat(purgedResultMap).hasSize(2);
         final List<BatteryDiffEntry> entryList = purgedResultMap.get(0);
@@ -313,19 +314,19 @@ public final class ConvertUtilsTest {
         final float ratio = (float) (7200) / (float) (3600 + 7200);
         final BatteryDiffEntry resultEntry = entryList.get(0);
         assertThat(resultEntry.mForegroundUsageTimeInMs)
-            .isEqualTo(Math.round(entry.mForegroundUsageTimeInMs * ratio));
+                .isEqualTo(Math.round(entry.mForegroundUsageTimeInMs * ratio));
         assertThat(resultEntry.mBackgroundUsageTimeInMs)
-            .isEqualTo(Math.round(entry.mBackgroundUsageTimeInMs * ratio));
+                .isEqualTo(Math.round(entry.mBackgroundUsageTimeInMs * ratio));
         assertThat(resultEntry.mConsumePower)
-            .isEqualTo(entry.mConsumePower * ratio);
+                .isEqualTo(entry.mConsumePower * ratio);
     }
 
     @Test
     public void getIndexedUsageMap_hideBackgroundUsageTime_returnsExpectedResult() {
-        final long[] batteryHistoryKeys = new long[] {101L, 102L, 103L};
+        final long[] batteryHistoryKeys = new long[]{101L, 102L, 103L};
         final Map<Long, Map<String, BatteryHistEntry>> batteryHistoryMap = new HashMap<>();
         final BatteryHistEntry fakeEntry = createBatteryHistEntry(
-            ConvertUtils.FAKE_PACKAGE_NAME, "fake_label", 0, 0L, 0L, 0L);
+                ConvertUtils.FAKE_PACKAGE_NAME, "fake_label", 0, 0L, 0L, 0L);
         // Adds the index = 0 data.
         Map<String, BatteryHistEntry> entryMap = new HashMap<>();
         entryMap.put(fakeEntry.getKey(), fakeEntry);
@@ -337,16 +338,16 @@ public final class ConvertUtilsTest {
         // Adds the index = 2 data.
         entryMap = new HashMap<>();
         final BatteryHistEntry entry = createBatteryHistEntry(
-            "package3", "label3", 500, 5L, 3600000L, 7200000L);
+                "package3", "label3", 500, 5L, 3600000L, 7200000L);
         entryMap.put(entry.getKey(), entry);
         batteryHistoryMap.put(Long.valueOf(batteryHistoryKeys[2]), entryMap);
         when(mPowerUsageFeatureProvider.getHideBackgroundUsageTimeSet(mContext))
-            .thenReturn(new HashSet(Arrays.asList((CharSequence) "package3")));
+                .thenReturn(new HashSet(Arrays.asList((CharSequence) "package3")));
 
         final Map<Integer, List<BatteryDiffEntry>> purgedResultMap =
-            ConvertUtils.getIndexedUsageMap(
+                ConvertUtils.getIndexedUsageMap(
-                mContext, /*timeSlotSize=*/ 1, batteryHistoryKeys, batteryHistoryMap,
+                        mContext, /*timeSlotSize=*/ 1, batteryHistoryKeys, batteryHistoryMap,
-                /*purgeLowPercentageAndFakeData=*/ true);
+                        /*purgeLowPercentageAndFakeData=*/ true);
 
         final BatteryDiffEntry resultEntry = purgedResultMap.get(0).get(0);
         assertThat(resultEntry.mBackgroundUsageTimeInMs).isEqualTo(0);
@@ -355,7 +356,7 @@ public final class ConvertUtilsTest {
     @Test
     public void getLocale_nullContext_returnDefaultLocale() {
         assertThat(ConvertUtils.getLocale(/*context=*/ null))
-            .isEqualTo(Locale.getDefault());
+                .isEqualTo(Locale.getDefault());
     }
 
     @Test
@@ -379,12 +380,12 @@ public final class ConvertUtilsTest {
         values.put(BatteryHistEntry.KEY_APP_LABEL, appLabel);
         values.put(BatteryHistEntry.KEY_UID, Long.valueOf(uid));
         values.put(BatteryHistEntry.KEY_CONSUMER_TYPE,
-            Integer.valueOf(ConvertUtils.CONSUMER_TYPE_UID_BATTERY));
+                Integer.valueOf(ConvertUtils.CONSUMER_TYPE_UID_BATTERY));
         values.put(BatteryHistEntry.KEY_CONSUME_POWER, consumePower);
         values.put(BatteryHistEntry.KEY_FOREGROUND_USAGE_TIME,
-            Long.valueOf(foregroundUsageTimeInMs));
+                Long.valueOf(foregroundUsageTimeInMs));
         values.put(BatteryHistEntry.KEY_BACKGROUND_USAGE_TIME,
-            Long.valueOf(backgroundUsageTimeInMs));
+                Long.valueOf(backgroundUsageTimeInMs));
         return new BatteryHistEntry(values);
     }
 

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/ExpandDividerPreferenceTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -14,14 +14,13 @@
  * limitations under the License.
  */
 
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.google.common.truth.Truth.assertThat;
 
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
 
 import android.content.Context;
 import android.widget.ImageView;
@@ -74,7 +73,7 @@ public final class ExpandDividerPreferenceTest {
 
     @Test
     public void testOnClick_switchExpandStateAndInvokeCallback() {
-        final boolean[] isExpandedArray = new boolean[] {false};
+        final boolean[] isExpandedArray = new boolean[]{false};
         mExpandDividerPreference.mImageView = mImageView;
         mExpandDividerPreference.setOnExpandListener(
                 isExpanded -> isExpandedArray[0] = isExpanded);
@@ -94,7 +93,7 @@ public final class ExpandDividerPreferenceTest {
 
     @Test
     public void testSetIsExpanded_updateStateButNotInvokeCallback() {
-        final boolean[] isExpandedArray = new boolean[] {false};
+        final boolean[] isExpandedArray = new boolean[]{false};
         mExpandDividerPreference.mImageView = mImageView;
         mExpandDividerPreference.setOnExpandListener(
                 isExpanded -> isExpandedArray[0] = isExpanded);

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/PowerGaugePreferenceTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static com.google.common.truth.Truth.assertThat;
 
@@ -55,7 +55,7 @@ public class PowerGaugePreferenceTest {
         mContext = RuntimeEnvironment.application;
         mRootView = LayoutInflater.from(mContext).inflate(R.layout.preference_app, null);
         mWidgetView =
-            LayoutInflater.from(mContext).inflate(R.layout.preference_widget_summary, null);
+                LayoutInflater.from(mContext).inflate(R.layout.preference_widget_summary, null);
         final LinearLayout widgetFrame = mRootView.findViewById(android.R.id.widget_frame);
         assertThat(widgetFrame).isNotNull();
         widgetFrame.addView(mWidgetView);

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/PowerUsageBaseTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyInt;

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/PowerUsageSummaryTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2022 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.
@@ -13,11 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.settings.fuelgauge;
+package com.android.settings.fuelgauge.batteryusage;
 
-import static com.android.settings.fuelgauge.PowerUsageSummary.BATTERY_INFO_LOADER;
+import static com.android.settings.fuelgauge.batteryusage.PowerUsageSummary.BATTERY_INFO_LOADER;
-import static com.android.settings.fuelgauge.PowerUsageSummary.KEY_BATTERY_ERROR;
+import static com.android.settings.fuelgauge.batteryusage.PowerUsageSummary.KEY_BATTERY_ERROR;
-import static com.android.settings.fuelgauge.PowerUsageSummary.KEY_BATTERY_USAGE;
+import static com.android.settings.fuelgauge.batteryusage.PowerUsageSummary.KEY_BATTERY_USAGE;
 
 import static com.google.common.truth.Truth.assertThat;
 
@@ -44,6 +44,8 @@ import androidx.preference.PreferenceScreen;
 
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
+import com.android.settings.fuelgauge.BatteryBroadcastReceiver;
+import com.android.settings.fuelgauge.BatteryUtils;
 import com.android.settings.fuelgauge.batterytip.BatteryTipPreferenceController;
 import com.android.settings.testutils.FakeFeatureFactory;
 import com.android.settings.testutils.XmlTestUtils;
@@ -55,6 +57,7 @@ import org.junit.BeforeClass;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
+import org.mockito.Mockito;
 import org.mockito.MockitoAnnotations;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
@@ -74,6 +77,7 @@ public class PowerUsageSummaryTest {
     public static void beforeClass() {
         sAdditionalBatteryInfoIntent = new Intent("com.example.app.ADDITIONAL_BATTERY_INFO");
     }
+
     @Mock
     private SettingsActivity mSettingsActivity;
     @Mock
@@ -111,7 +115,7 @@ public class PowerUsageSummaryTest {
                 .thenReturn(sAdditionalBatteryInfoIntent);
         when(mFeatureFactory.powerUsageFeatureProvider.isChartGraphEnabled(mRealContext))
                 .thenReturn(true);
-        mFragment.mBatteryUtils = spy(new BatteryUtils(mRealContext));
+        mFragment.mBatteryUtils = Mockito.spy(new BatteryUtils(mRealContext));
         ReflectionHelpers.setField(mFragment, "mVisibilityLoggerMixin", mVisibilityLoggerMixin);
         ReflectionHelpers.setField(mFragment, "mBatteryBroadcastReceiver",
                 mBatteryBroadcastReceiver);

tests/robotests/src/com/android/settings/homepage/contextualcards/slices/BatteryFixSliceTest.java

@@ -31,13 +31,13 @@ import androidx.slice.SliceProvider;
 import androidx.slice.widget.SliceLiveData;
 
 import com.android.settings.R;
-import com.android.settings.fuelgauge.BatteryUsageStatsLoader;
 import com.android.settings.fuelgauge.batterytip.AppInfo;
 import com.android.settings.fuelgauge.batterytip.BatteryTipLoader;
 import com.android.settings.fuelgauge.batterytip.tips.BatteryTip;
 import com.android.settings.fuelgauge.batterytip.tips.EarlyWarningTip;
 import com.android.settings.fuelgauge.batterytip.tips.HighUsageTip;
 import com.android.settings.fuelgauge.batterytip.tips.LowBatteryTip;
+import com.android.settings.fuelgauge.batteryusage.BatteryUsageStatsLoader;
 import com.android.settings.slices.SliceBackgroundWorker;
 
 import org.junit.After;

tests/unit/src/com/android/settings/search/CustomSiteMapRegistryTest.java

@@ -23,8 +23,8 @@ import androidx.test.ext.junit.runners.AndroidJUnit4;
 import com.android.settings.backup.UserBackupSettingsActivity;
 import com.android.settings.connecteddevice.ConnectedDeviceDashboardFragment;
 import com.android.settings.connecteddevice.usb.UsbDetailsFragment;
-import com.android.settings.fuelgauge.PowerUsageAdvanced;
+import com.android.settings.fuelgauge.batteryusage.PowerUsageAdvanced;
-import com.android.settings.fuelgauge.PowerUsageSummary;
+import com.android.settings.fuelgauge.batteryusage.PowerUsageSummary;
 import com.android.settings.gestures.GestureNavigationSettingsFragment;
 import com.android.settings.gestures.SystemNavigationGestureSettings;
 import com.android.settings.location.LocationSettings;