Update related UI if battery is not present

This change is to update the related UI in the battery page if the
battery is not present. This includes the following updates:
1. Update the summary of battery tile in the Settings homepage
2. Replace the battery level with "Unknown"
3. Replace the summary with help message in the battery page
4. Remove the battery meter icon

Bug: 171368508
Test: verify on an issue device
Change-Id: I892e0d137143160a0bce0c11ce9265120ebb8fd4

res/layout/battery_header.xml

@@ -25,6 +25,7 @@
     style="@style/EntityHeader">
 
     <LinearLayout
+        android:id="@+id/battery_info_layout"
         android:layout_width="170dp"
         android:layout_height="wrap_content"
         android:layout_marginStart="72dp"

res/values/strings.xml

@@ -5778,6 +5778,11 @@
     <!-- Title to display the battery percentage. [CHAR LIMIT=24] -->
     <string name="battery_header_title_alternate"><xliff:g id="number" example="88">^1</xliff:g><small> <font size="20"><xliff:g id="unit" example="%">%</xliff:g></font></small></string>
 
+    <!-- Summary for top level battery tile if battery is not present. [CHAR LIMIT=NONE] -->
+    <string name="battery_missing_message">Problem reading your battery meter</string>
+    <!-- Summary to battery page if battery is not present. [CHAR LIMIT=NONE] -->
+    <string name="battery_missing_help_message">Problem reading your battery meter. Tap to <annotation id="url">learn more</annotation></string>
+
     <!-- Title for force stop dialog [CHAR LIMIT=30] -->
     <string name="dialog_stop_title">Stop app?</string>
     <!-- Message body for force stop dialog [CHAR LIMIT=NONE] -->
@@ -7290,6 +7295,8 @@
     <string name="help_uri_sim_combination_warning" translatable="false"></string>
     <!-- url for the NFC and payment settings page -->
     <string name="help_uri_nfc_and_payment_settings" translatable="false"></string>
+    <!-- url for battery page if battery is not present -->
+    <string name="help_url_battery_missing" translatable="false"></string>
 
     <!-- User account title [CHAR LIMIT=30] -->
     <string name="user_account_title">Account for content</string>

src/com/android/settings/Utils.java

@@ -267,6 +267,15 @@ public final class Utils extends com.android.settingslib.Utils {
         return batteryChangedIntent.getBooleanExtra(BatteryManager.EXTRA_PRESENT, true);
     }
 
+    /**
+     * Return true if battery is present.
+     */
+    public static boolean isBatteryPresent(Context context) {
+        Intent batteryBroadcast = context.registerReceiver(null /* receiver */,
+                new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
+        return isBatteryPresent(batteryBroadcast);
+    }
+
     public static String getBatteryPercentage(Intent batteryChangedIntent) {
         return formatPercentage(getBatteryLevel(batteryChangedIntent));
     }

src/com/android/settings/display/BatteryPercentagePreferenceController.java

@@ -21,9 +21,11 @@ import android.content.Context;
 import android.provider.Settings;
 
 import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
 import androidx.preference.SwitchPreference;
 
 import com.android.internal.R;
+import com.android.settings.Utils;
 import com.android.settings.core.BasePreferenceController;
 import com.android.settings.core.PreferenceControllerMixin;
 
@@ -34,12 +36,27 @@ import com.android.settings.core.PreferenceControllerMixin;
 public class BatteryPercentagePreferenceController extends BasePreferenceController implements
         PreferenceControllerMixin, Preference.OnPreferenceChangeListener {
 
+    private Preference mPreference;
+
     public BatteryPercentagePreferenceController(Context context, String preferenceKey) {
         super(context, preferenceKey);
     }
 
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreference = screen.findPreference(getPreferenceKey());
+        if (!Utils.isBatteryPresent(mContext)) {
+            // Disable battery percentage
+            onPreferenceChange(mPreference, false /* newValue */);
+        }
+    }
+
     @Override
     public int getAvailabilityStatus() {
+        if (!Utils.isBatteryPresent(mContext)) {
+            return CONDITIONALLY_UNAVAILABLE;
+        }
         return mContext.getResources().getBoolean(
                 R.bool.config_battery_percentage_setting_available) ? AVAILABLE
                 : UNSUPPORTED_ON_DEVICE;

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

@@ -21,6 +21,7 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.os.PowerManager;
+import android.util.Log;
 
 import androidx.annotation.IntDef;
 import androidx.annotation.VisibleForTesting;
@@ -41,6 +42,7 @@ import java.lang.annotation.RetentionPolicy;
  */
 public class BatteryBroadcastReceiver extends BroadcastReceiver {
 
+    private static final String TAG = "BatteryBroadcastRcvr";
     /**
      * Callback when the following has been changed:
      *
@@ -56,12 +58,14 @@ public class BatteryBroadcastReceiver extends BroadcastReceiver {
     @IntDef({BatteryUpdateType.MANUAL,
             BatteryUpdateType.BATTERY_LEVEL,
             BatteryUpdateType.BATTERY_SAVER,
-            BatteryUpdateType.BATTERY_STATUS})
+            BatteryUpdateType.BATTERY_STATUS,
+            BatteryUpdateType.BATTERY_NOT_PRESENT})
     public @interface BatteryUpdateType {
         int MANUAL = 0;
         int BATTERY_LEVEL = 1;
         int BATTERY_SAVER = 2;
         int BATTERY_STATUS = 3;
+        int BATTERY_NOT_PRESENT = 4;
     }
 
     @VisibleForTesting
@@ -101,9 +105,11 @@ public class BatteryBroadcastReceiver extends BroadcastReceiver {
         if (intent != null && mBatteryListener != null) {
             if (Intent.ACTION_BATTERY_CHANGED.equals(intent.getAction())) {
                 final String batteryLevel = Utils.getBatteryPercentage(intent);
-                final String batteryStatus = Utils.getBatteryStatus(
+                final String batteryStatus = Utils.getBatteryStatus(mContext, intent);
-                        mContext, intent);
+                if (!Utils.isBatteryPresent(intent)) {
-                if (forceUpdate) {
+                    Log.w(TAG, "Problem reading the battery meter.");
+                    mBatteryListener.onBatteryChanged(BatteryUpdateType.BATTERY_NOT_PRESENT);
+                } else if (forceUpdate) {
                     mBatteryListener.onBatteryChanged(BatteryUpdateType.MANUAL);
                 } else if(!batteryLevel.equals(mBatteryLevel)) {
                     mBatteryListener.onBatteryChanged(BatteryUpdateType.BATTERY_LEVEL);

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

@@ -25,6 +25,10 @@ import android.icu.text.NumberFormat;
 import android.os.BatteryManager;
 import android.os.PowerManager;
 import android.text.TextUtils;
+import android.text.method.LinkMovementMethod;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.LinearLayout;
 import android.widget.TextView;
 
 import androidx.annotation.VisibleForTesting;
@@ -35,7 +39,9 @@ import com.android.settings.R;
 import com.android.settings.core.BasePreferenceController;
 import com.android.settings.core.PreferenceControllerMixin;
 import com.android.settings.overlay.FeatureFactory;
+import com.android.settings.utils.AnnotationSpan;
 import com.android.settings.widget.EntityHeaderController;
+import com.android.settingslib.HelpUtils;
 import com.android.settingslib.Utils;
 import com.android.settingslib.core.lifecycle.Lifecycle;
 import com.android.settingslib.core.lifecycle.LifecycleObserver;
@@ -49,6 +55,7 @@ public class BatteryHeaderPreferenceController extends BasePreferenceController
         implements PreferenceControllerMixin, LifecycleObserver, OnStart {
     @VisibleForTesting
     static final String KEY_BATTERY_HEADER = "battery_header";
+    private static final String ANNOTATION_URL = "url";
 
     @VisibleForTesting
     BatteryStatusFeatureProvider mBatteryStatusFeatureProvider;
@@ -94,7 +101,11 @@ public class BatteryHeaderPreferenceController extends BasePreferenceController
         mBatteryPercentText = mBatteryLayoutPref.findViewById(R.id.battery_percent);
         mSummary1 = mBatteryLayoutPref.findViewById(R.id.summary1);
 
-        quickUpdateHeaderPreference();
+        if (com.android.settings.Utils.isBatteryPresent(mContext)) {
+            quickUpdateHeaderPreference();
+        } else {
+            showHelpMessage();
+        }
     }
 
     @Override
@@ -146,6 +157,32 @@ public class BatteryHeaderPreferenceController extends BasePreferenceController
         mBatteryPercentText.setText(formatBatteryPercentageText(batteryLevel));
     }
 
+    @VisibleForTesting
+    void showHelpMessage() {
+        final LinearLayout batteryInfoLayout =
+                mBatteryLayoutPref.findViewById(R.id.battery_info_layout);
+        // Remove battery meter icon
+        mBatteryMeterView.setVisibility(View.GONE);
+        // Update the width of battery info layout
+        final ViewGroup.LayoutParams params = batteryInfoLayout.getLayoutParams();
+        params.width = LinearLayout.LayoutParams.WRAP_CONTENT;
+        batteryInfoLayout.setLayoutParams(params);
+        mBatteryPercentText.setText(mContext.getText(R.string.unknown));
+        // Add linkable text for learn more
+        final Intent helpIntent = HelpUtils.getHelpIntent(mContext,
+                mContext.getString(R.string.help_url_battery_missing),
+                mContext.getClass().getName());
+        final AnnotationSpan.LinkInfo linkInfo = new AnnotationSpan
+                .LinkInfo(mContext, ANNOTATION_URL, helpIntent);
+        if (linkInfo.isActionable()) {
+            mSummary1.setMovementMethod(LinkMovementMethod.getInstance());
+            mSummary1.setText(AnnotationSpan
+                    .linkify(mContext.getText(R.string.battery_missing_help_message), linkInfo));
+        } else {
+            mSummary1.setText(mContext.getText(R.string.battery_missing_message));
+        }
+    }
+
     private CharSequence formatBatteryPercentageText(int batteryLevel) {
         return TextUtils.expandTemplate(mContext.getText(R.string.battery_header_title_alternate),
                 NumberFormat.getIntegerInstance().format(batteryLevel));

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

@@ -44,6 +44,7 @@ public abstract class PowerUsageBase extends DashboardFragment {
     protected BatteryStatsHelper mStatsHelper;
     protected UserManager mUm;
     private BatteryBroadcastReceiver mBatteryBroadcastReceiver;
+    protected boolean mIsBatteryPresent = true;
 
     @Override
     public void onAttach(Activity activity) {
@@ -60,6 +61,9 @@ public abstract class PowerUsageBase extends DashboardFragment {
 
         mBatteryBroadcastReceiver = new BatteryBroadcastReceiver(getContext());
         mBatteryBroadcastReceiver.setBatteryChangedListener(type -> {
+            if (type == BatteryBroadcastReceiver.BatteryUpdateType.BATTERY_NOT_PRESENT) {
+                mIsBatteryPresent = false;
+            }
             restartBatteryStatsLoader(type);
         });
     }

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

@@ -56,8 +56,8 @@ import com.android.settingslib.widget.LayoutPreference;
 import java.util.List;
 
 /**
- * Displays a list of apps and subsystems that consume power, ordered by how much power was
+ * Displays a list of apps and subsystems that consume power, ordered by how much power was consumed
- * consumed since the last time it was unplugged.
+ * since the last time it was unplugged.
  */
 @SearchIndexable(forTarget = SearchIndexable.ALL & ~SearchIndexable.ARC)
 public class PowerUsageSummary extends PowerUsageBase implements OnLongClickListener,
@@ -220,7 +220,9 @@ public class PowerUsageSummary extends PowerUsageBase implements OnLongClickList
                 KEY_TIME_SINCE_LAST_FULL_CHARGE);
         mBatteryUtils = BatteryUtils.getInstance(getContext());
 
-        restartBatteryInfoLoader();
+        if (Utils.isBatteryPresent(getContext())) {
+            restartBatteryInfoLoader();
+        }
         mBatteryTipPreferenceController.restoreInstanceState(icicle);
         updateBatteryTipFlag(icicle);
     }
@@ -287,6 +289,10 @@ public class PowerUsageSummary extends PowerUsageBase implements OnLongClickList
         if (context == null) {
             return;
         }
+        // Skip refreshing UI if battery is not present.
+        if (!mIsBatteryPresent) {
+            return;
+        }
 
         // Skip BatteryTipLoader if device is rotated or only battery level change
         if (mNeedUpdateBatteryTip
@@ -295,7 +301,6 @@ public class PowerUsageSummary extends PowerUsageBase implements OnLongClickList
         } else {
             mNeedUpdateBatteryTip = true;
         }
-
         // reload BatteryInfo and updateUI
         restartBatteryInfoLoader();
         updateLastFullChargePreference();
@@ -354,6 +359,10 @@ public class PowerUsageSummary extends PowerUsageBase implements OnLongClickList
         if (getContext() == null) {
             return;
         }
+        // Skip restartBatteryInfoLoader if battery is not present.
+        if (!mIsBatteryPresent) {
+            return;
+        }
         getLoaderManager().restartLoader(BATTERY_INFO_LOADER, Bundle.EMPTY,
                 mBatteryInfoLoaderCallbacks);
         if (mPowerFeatureProvider.isEstimateDebugEnabled()) {
@@ -378,7 +387,10 @@ public class PowerUsageSummary extends PowerUsageBase implements OnLongClickList
     @Override
     protected void restartBatteryStatsLoader(@BatteryUpdateType int refreshType) {
         super.restartBatteryStatsLoader(refreshType);
-        mBatteryHeaderPreferenceController.quickUpdateHeaderPreference();
+        // Update battery header if battery is present.
+        if (mIsBatteryPresent) {
+            mBatteryHeaderPreferenceController.quickUpdateHeaderPreference();
+        }
     }
 
     @Override
@@ -392,7 +404,6 @@ public class PowerUsageSummary extends PowerUsageBase implements OnLongClickList
         restartBatteryTipLoader();
     }
 
-
     public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
             new BaseSearchIndexProvider(R.xml.power_usage_summary);
 }

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

@@ -19,6 +19,7 @@ package com.android.settings.fuelgauge;
 import android.content.Context;
 import android.util.FeatureFlagUtils;
 
+import androidx.annotation.VisibleForTesting;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceScreen;
 
@@ -32,6 +33,8 @@ import com.android.settingslib.core.lifecycle.events.OnStop;
 public class TopLevelBatteryPreferenceController extends BasePreferenceController implements
         LifecycleObserver, OnStart, OnStop {
 
+    @VisibleForTesting
+    boolean mIsBatteryPresent = true;
     private final BatteryBroadcastReceiver mBatteryBroadcastReceiver;
     private Preference mPreference;
     private BatteryInfo mBatteryInfo;
@@ -40,6 +43,9 @@ public class TopLevelBatteryPreferenceController extends BasePreferenceControlle
         super(context, preferenceKey);
         mBatteryBroadcastReceiver = new BatteryBroadcastReceiver(mContext);
         mBatteryBroadcastReceiver.setBatteryChangedListener(type -> {
+            if (type == BatteryBroadcastReceiver.BatteryUpdateType.BATTERY_NOT_PRESENT) {
+                mIsBatteryPresent = false;
+            }
             BatteryInfo.getBatteryInfo(mContext, info -> {
                 mBatteryInfo = info;
                 updateState(mPreference);
@@ -75,7 +81,10 @@ public class TopLevelBatteryPreferenceController extends BasePreferenceControlle
         if (FeatureFlagUtils.isEnabled(mContext, FeatureFlags.SILKY_HOME)) {
             return null;
         }
-
+        // Display help message if battery is not present.
+        if (!mIsBatteryPresent) {
+            return mContext.getText(R.string.battery_missing_message);
+        }
         return getDashboardLabel(mContext, mBatteryInfo);
     }
 

tests/robotests/src/com/android/settings/display/BatteryPercentagePreferenceControllerTest.java

@@ -18,18 +18,25 @@ package com.android.settings.display;
 
 import static android.provider.Settings.System.SHOW_BATTERY_PERCENT;
 
+import static com.android.settings.core.BasePreferenceController.CONDITIONALLY_UNAVAILABLE;
+
 import static com.google.common.truth.Truth.assertThat;
 
 import android.content.Context;
 import android.provider.Settings;
 
+import com.android.settings.testutils.shadow.ShadowUtils;
+
+import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
 
 @RunWith(RobolectricTestRunner.class)
+@Config(shadows = ShadowUtils.class)
 public class BatteryPercentagePreferenceControllerTest {
 
     private static final String PREF_KEY = "battery_percentage";
@@ -43,6 +50,11 @@ public class BatteryPercentagePreferenceControllerTest {
         mController = new BatteryPercentagePreferenceController(mContext, PREF_KEY);
     }
 
+    @After
+    public void tearDown() {
+        ShadowUtils.reset();
+    }
+
     private int getPercentageSetting() {
         return Settings.System.getInt(mContext.getContentResolver(), SHOW_BATTERY_PERCENT, 0);
     }
@@ -60,4 +72,11 @@ public class BatteryPercentagePreferenceControllerTest {
         final int isOn = getPercentageSetting();
         assertThat(isOn).isEqualTo(0);
     }
+
+    @Test
+    public void getAvailabilityStatus_batteryNotPresent_shouldReturnConditionallyUnavailable() {
+        ShadowUtils.setIsBatteryPresent(false);
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(CONDITIONALLY_UNAVAILABLE);
+    }
 }

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

@@ -90,6 +90,19 @@ public class BatteryBroadcastReceiverTest {
         verify(mBatteryListener).onBatteryChanged(BatteryUpdateType.BATTERY_LEVEL);
     }
 
+    @Test
+    @Config(shadows = {
+            BatteryFixSliceTest.ShadowBatteryStatsHelperLoader.class,
+            BatteryFixSliceTest.ShadowBatteryTipLoader.class
+    })
+    public void onReceive_batteryNotPresent_shouldShowHelpMessage() {
+        mChargingIntent.putExtra(BatteryManager.EXTRA_PRESENT, false);
+
+        mBatteryBroadcastReceiver.onReceive(mContext, mChargingIntent);
+
+        verify(mBatteryListener).onBatteryChanged(BatteryUpdateType.BATTERY_NOT_PRESENT);
+    }
+
     @Test
     @Config(shadows = {
             BatteryFixSliceTest.ShadowBatteryStatsHelperLoader.class,

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

@@ -44,6 +44,7 @@ import androidx.recyclerview.widget.RecyclerView;
 import com.android.settings.R;
 import com.android.settings.core.BasePreferenceController;
 import com.android.settings.testutils.shadow.ShadowEntityHeaderController;
+import com.android.settings.testutils.shadow.ShadowUtils;
 import com.android.settings.widget.EntityHeaderController;
 import com.android.settingslib.core.lifecycle.Lifecycle;
 import com.android.settingslib.widget.LayoutPreference;
@@ -61,7 +62,7 @@ import org.robolectric.annotation.Config;
 import org.robolectric.shadows.ShadowPowerManager;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(shadows = ShadowEntityHeaderController.class)
+@Config(shadows = {ShadowEntityHeaderController.class, ShadowUtils.class})
 public class BatteryHeaderPreferenceControllerTest {
 
     private static final String PREF_KEY = "battery_header";
@@ -116,7 +117,7 @@ public class BatteryHeaderPreferenceControllerTest {
 
         mPowerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
 
-        mController = new BatteryHeaderPreferenceController(mContext, PREF_KEY);
+        mController = spy(new BatteryHeaderPreferenceController(mContext, PREF_KEY));
         mLifecycle.addObserver(mController);
         mController.setActivity(mActivity);
         mController.setFragment(mPreferenceFragment);
@@ -129,6 +130,7 @@ public class BatteryHeaderPreferenceControllerTest {
     @After
     public void tearDown() {
         ShadowEntityHeaderController.reset();
+        ShadowUtils.reset();
     }
 
     @Test
@@ -214,4 +216,13 @@ public class BatteryHeaderPreferenceControllerTest {
         assertThat(mController.getAvailabilityStatus()).isEqualTo(
                 BasePreferenceController.AVAILABLE_UNSEARCHABLE);
     }
+
+    @Test
+    public void displayPreference_batteryNotPresent_shouldShowHelpMessage() {
+        ShadowUtils.setIsBatteryPresent(false);
+
+        mController.displayPreference(mPreferenceScreen);
+
+        verify(mController).showHelpMessage();
+    }
 }

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

@@ -45,7 +45,6 @@ import android.view.MenuItem;
 import android.view.View;
 import android.widget.TextView;
 
-import androidx.annotation.VisibleForTesting;
 import androidx.loader.app.LoaderManager;
 import androidx.preference.PreferenceScreen;
 
@@ -56,6 +55,7 @@ import com.android.settings.SettingsActivity;
 import com.android.settings.fuelgauge.batterytip.BatteryTipPreferenceController;
 import com.android.settings.testutils.FakeFeatureFactory;
 import com.android.settings.testutils.XmlTestUtils;
+import com.android.settings.testutils.shadow.ShadowUtils;
 import com.android.settingslib.core.instrumentation.VisibilityLoggerMixin;
 import com.android.settingslib.widget.LayoutPreference;
 
@@ -72,6 +72,7 @@ import org.mockito.stubbing.Answer;
 import org.robolectric.Robolectric;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
 import org.robolectric.util.ReflectionHelpers;
 
 import java.util.ArrayList;
@@ -224,6 +225,7 @@ public class PowerUsageSummaryTest {
     }
 
     @Test
+    @Config(shadows = ShadowUtils.class)
     public void nonIndexableKeys_MatchPreferenceKeys() {
         final Context context = RuntimeEnvironment.application;
         final List<String> niks =

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

@@ -25,6 +25,7 @@ import static com.google.common.truth.Truth.assertThat;
 import android.content.Context;
 import android.util.FeatureFlagUtils;
 
+import com.android.settings.R;
 import com.android.settings.core.FeatureFlags;
 
 import org.junit.After;
@@ -84,4 +85,13 @@ public class TopLevelBatteryPreferenceControllerTest {
 
         assertThat(mController.getSummary()).isNull();
     }
+
+    @Test
+    public void getSummary_batteryNotPresent_shouldShowWarningMessage() {
+        FeatureFlagUtils.setEnabled(mContext, FeatureFlags.SILKY_HOME, false);
+        mController.mIsBatteryPresent = false;
+
+        assertThat(mController.getSummary())
+                .isEqualTo(mContext.getString(R.string.battery_missing_message));
+    }
 }

tests/robotests/src/com/android/settings/testutils/shadow/ShadowUtils.java

@@ -46,6 +46,7 @@ public class ShadowUtils {
     private static boolean sIsSystemAlertWindowEnabled;
     private static boolean sIsVoiceCapable;
     private static ArraySet<String> sResultLinks = new ArraySet<>();
+    private static boolean sIsBatteryPresent;
 
     @Implementation
     protected static int enforceSameOwner(Context context, int userId) {
@@ -67,6 +68,7 @@ public class ShadowUtils {
         sIsDemoUser = false;
         sIsVoiceCapable = false;
         sResultLinks = new ArraySet<>();
+        sIsBatteryPresent = true;
     }
 
     public static void setIsDemoUser(boolean isDemoUser) {
@@ -155,4 +157,13 @@ public class ShadowUtils {
     public static void setHandledDomains(ArraySet<String> links) {
         sResultLinks = links;
     }
+
+    @Implementation
+    protected static boolean isBatteryPresent(Context context) {
+        return sIsBatteryPresent;
+    }
+
+    public static void setIsBatteryPresent(boolean isBatteryPresent) {
+        sIsBatteryPresent = isBatteryPresent;
+    }
 }