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);

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;
@@ -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;
@@ -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;
@@ -496,7 +507,7 @@ public class BatteryChartPreferenceController extends AbstractPreferenceControll
         } else {
             return isApp
                     ? 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);
         }
     }
 

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;
@@ -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();
@@ -208,7 +214,8 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
             mTimestamps[index] =
                     ConvertUtils.utcToLocalTimeHour(
                             getContext(),
-                    latestTimestamp - (TIMESTAMP_GAPS_COUNT - index) * timeSlotOffset,
+                            latestTimestamp - (TIMESTAMP_GAPS_COUNT - index)
+                                    * timeSlotOffset,
                             is24HourFormat);
         }
         requestLayout();
@@ -429,8 +436,9 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
         if (mTextPaint != null) {
             canvas.drawText(
                     mPercentages[index],
-                getWidth() - mPercentageBounds[index].width() - mPercentageBounds[index].left,
+                    getWidth() - mPercentageBounds[index].width()
-                offsetY + mPercentageBounds[index].height() *.5f,
+                            - mPercentageBounds[index].left,
+                    offsetY + mPercentageBounds[index].height() * .5f,
                     mTextPaint);
         }
     }
@@ -485,8 +493,9 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
         for (int index = 1; index <= DEFAULT_TIMESTAMP_COUNT - 2; index++) {
             canvas.drawText(
                     mTimestamps[index],
-                xOffsets[index] -
+                    xOffsets[index]
-                    (mTimestampsBounds[index].width() - mTimestampsBounds[index].left) * .5f,
+                            - (mTimestampsBounds[index].width() - mTimestampsBounds[index].left)
+                            * .5f,
                     getTimestampY(index), mTextPaint);
 
         }
@@ -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);
@@ -582,7 +591,7 @@ 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=*/ 50, /*round=*/ true),
                 formatPercentage(/*percentage=*/ 0, /*round=*/ true)};

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,
@@ -135,9 +143,9 @@ public class BatteryDiffEntry {
         }
         // 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? */

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");
         }
 
@@ -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();
     }
@@ -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;
@@ -207,7 +209,7 @@ public class BatteryHistEntry {
     private int getInteger(ContentValues values, String key) {
         if (values != null && values.containsKey(key)) {
             return values.getAsInteger(key);
-        };
+        }
         mIsValidEntry = false;
         return 0;
     }

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;
 

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;
 
@@ -61,6 +65,7 @@ public class BatteryHistoryPreference extends Preference {
         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);

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;
@@ -70,15 +72,18 @@ public final class ConvertUtils {
             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,

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";

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)
@@ -72,18 +68,22 @@ public final class BatteryChartPreferenceControllerTest {
     private static final int 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;
@@ -102,10 +102,10 @@ 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)
                 .getHideApplicationSummary(mContext);
-        doReturn(new String[] {"com.android.gms.persistent"})
+        doReturn(new String[]{"com.android.gms.persistent"})
                 .when(mFeatureFactory.powerUsageFeatureProvider)
                 .getHideApplicationEntries(mContext);
         mBatteryChartPreferenceController = createController();
@@ -611,7 +611,7 @@ public final class BatteryChartPreferenceControllerTest {
         mBatteryChartPreferenceController = createController();
         mBatteryChartPreferenceController.mBatteryChartView =
                 spy(new BatteryChartView(mContext));
-        mBatteryChartPreferenceController.mBatteryHistoryKeys = new long[] {0L};
+        mBatteryChartPreferenceController.mBatteryHistoryKeys = new long[]{0L};
 
         mBatteryChartPreferenceController.setTimestampLabel();
 
@@ -686,7 +686,7 @@ public final class BatteryChartPreferenceControllerTest {
 
     private void setUpBatteryHistoryKeys() {
         mBatteryChartPreferenceController.mBatteryHistoryKeys =
-            new long[] {1619196786769L, 0L, 1619247636826L};
+                new long[]{1619196786769L, 0L, 1619247636826L};
         ConvertUtils.utcToLocalTimeHour(
                 mContext, /*timestamp=*/ 0, /*is24HourFormat=*/ false);
     }

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() {
@@ -64,25 +65,25 @@ public final class BatteryChartViewTest {
         mContext.getResources().getConfiguration().setLocales(
                 new LocaleList(new Locale("en_US")));
         mBatteryChartView = new BatteryChartView(mContext);
-        doReturn(mockAccessibilityManager).when(mContext)
+        doReturn(mMockAccessibilityManager).when(mContext)
                 .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());
     }
 
     @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());
 
         assertThat(BatteryChartView.isAccessibilityEnabled(mContext)).isFalse();
@@ -90,13 +91,13 @@ public final class BatteryChartViewTest {
 
     @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(
@@ -113,7 +114,7 @@ public final class BatteryChartViewTest {
 
     @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(
@@ -142,7 +143,7 @@ public final class BatteryChartViewTest {
         mBatteryChartView.setClickableForce(true);
         when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
                 .thenReturn(true);
-        doReturn(false).when(mockAccessibilityManager).isEnabled();
+        doReturn(false).when(mMockAccessibilityManager).isEnabled();
 
         mBatteryChartView.onAttachedToWindow();
         assertThat(mBatteryChartView.isClickable()).isTrue();
@@ -154,9 +155,9 @@ public final class BatteryChartViewTest {
         mBatteryChartView.setClickableForce(true);
         when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
                 .thenReturn(true);
-        doReturn(true).when(mockAccessibilityManager).isEnabled();
+        doReturn(true).when(mMockAccessibilityManager).isEnabled();
         doReturn(new ArrayList<AccessibilityServiceInfo>())
-            .when(mockAccessibilityManager)
+                .when(mMockAccessibilityManager)
                 .getEnabledAccessibilityServiceList(anyInt());
 
         mBatteryChartView.onAttachedToWindow();
@@ -169,7 +170,7 @@ public final class BatteryChartViewTest {
         mBatteryChartView.setClickableForce(true);
         when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
                 .thenReturn(true);
-        doReturn(true).when(mockAccessibilityManager).isEnabled();
+        doReturn(true).when(mMockAccessibilityManager).isEnabled();
 
         mBatteryChartView.onAttachedToWindow();
         assertThat(mBatteryChartView.isClickable()).isFalse();
@@ -187,12 +188,12 @@ public final class BatteryChartViewTest {
         mBatteryChartView.setClickableForce(true);
         when(mPowerUsageFeatureProvider.isChartGraphSlotsEnabled(mContext))
                 .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();
 
@@ -202,7 +203,7 @@ public final class BatteryChartViewTest {
     @Test
     public void testOnAttachedToWindow_addAccessibilityStateChangeListener() {
         mBatteryChartView.onAttachedToWindow();
-        verify(mockAccessibilityManager)
+        verify(mMockAccessibilityManager)
                 .addAccessibilityStateChangeListener(mBatteryChartView);
     }
 
@@ -214,7 +215,7 @@ public final class BatteryChartViewTest {
 
         mBatteryChartView.onDetachedFromWindow();
 
-        verify(mockAccessibilityManager)
+        verify(mMockAccessibilityManager)
                 .removeAccessibilityStateChangeListener(mBatteryChartView);
         assertThat(mBatteryChartView.mHandler.hasCallbacks(
                 mBatteryChartView.mUpdateClickableStateRun))

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() {
@@ -75,8 +85,8 @@ 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();
     }
 
@@ -150,7 +160,7 @@ 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);
@@ -181,10 +191,10 @@ public final class BatteryDiffEntryTest {
                 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);
-        doReturn(expectedAppLabel).when(mockPackageManager)
+        doReturn(expectedAppLabel).when(mMockPackageManager)
-            .getApplicationLabel(mockAppInfo);
+                .getApplicationLabel(mMockAppInfo);
         final BatteryHistEntry batteryHistEntry = new BatteryHistEntry(values);
 
         final BatteryDiffEntry entry = createBatteryDiffEntry(10, batteryHistEntry);
@@ -238,13 +248,13 @@ public final class BatteryDiffEntryTest {
         final ContentValues values = getContentValuesWithType(
                 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();
     }
 
@@ -252,29 +262,29 @@ 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());
-        assertThat(nameAndIcon.mIcon).isEqualTo(mockDrawable);
+        assertThat(nameAndIcon.mIcon).isEqualTo(mMockDrawable);
     }
 
     @Test
@@ -295,21 +305,21 @@ 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());
-        assertThat(nameAndIcon.mIcon).isEqualTo(mockDrawable2);
+        assertThat(nameAndIcon.mIcon).isEqualTo(mMockDrawable2);
     }
 
     @Test
@@ -390,19 +400,19 @@ public final class BatteryDiffEntryTest {
         // 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.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.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());
         entry.updateRestrictionFlagState();
         // Sets true if package is valid and PackageInfo can be found.
@@ -472,16 +482,16 @@ public final class BatteryDiffEntryTest {
         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);
         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;
 
@@ -50,22 +50,22 @@ 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");
-        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);
         final ContentValues values =
                 ConvertUtils.convert(
-                mockBatteryEntry,
+                        mMockBatteryEntry,
                         mBatteryUsageStats,
                         /*batteryLevel=*/ 12,
                         /*batteryStatus=*/ BatteryManager.BATTERY_STATUS_FULL,
@@ -76,7 +76,7 @@ public final class BatteryHistEntryTest {
         assertBatteryHistEntry(
                 new BatteryHistEntry(values),
                 /*drainType=*/ expectedType,
-            /*percentOfTotal=*/ mockBatteryEntry.mPercent);
+                /*percentOfTotal=*/ mMockBatteryEntry.mPercent);
     }
 
     @Test
@@ -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;
@@ -70,23 +70,23 @@ 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");
-        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);
 
         final ContentValues values =
                 ConvertUtils.convert(
-                mockBatteryEntry,
+                        mMockBatteryEntry,
                         mBatteryUsageStats,
                         /*batteryLevel=*/ 12,
                         /*batteryStatus=*/ BatteryManager.BATTERY_STATUS_FULL,
@@ -154,7 +154,7 @@ public final class ConvertUtilsTest {
     @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,
@@ -166,11 +166,12 @@ public final class ConvertUtilsTest {
                 /*purgeLowPercentageAndFakeData=*/ true))
                 .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<>();
         final BatteryHistEntry fakeEntry = createBatteryHistEntry(
@@ -281,7 +282,7 @@ 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<>();
         final BatteryHistEntry fakeEntry = createBatteryHistEntry(
@@ -322,7 +323,7 @@ public final class ConvertUtilsTest {
 
     @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);

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;
 

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;