Add getA11yPackageNames() into SettingsLib for other modules

package com.android.settingslib.fuelgauge;

import android.accessibilityservice.AccessibilityServiceInfo;

import android.content.ComponentName;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import android.provider.Settings;

import android.util.ArraySet;

import android.view.accessibility.AccessibilityManager;

import java.util.List;

public final class BatteryUtils {

        return context.registerReceiver(

                /*receiver=*/ null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));

    }

    /** Gets the current active accessibility related packages. */

    public static ArraySet<String> getA11yPackageNames(Context context) {

        context = context.getApplicationContext();

        final ArraySet<String> packageNames = new ArraySet<>();

        final String defaultTtsPackageName = Settings.Secure.getString(

                context.getContentResolver(), Settings.Secure.TTS_DEFAULT_SYNTH);

        if (defaultTtsPackageName != null) {

            packageNames.add(defaultTtsPackageName);

        }

        // Checks the current active packages.

        final AccessibilityManager accessibilityManager =

                context.getSystemService(AccessibilityManager.class);

        if (!accessibilityManager.isEnabled()) {

            return packageNames;

        }

        final List<AccessibilityServiceInfo> serviceInfoList =

                accessibilityManager.getEnabledAccessibilityServiceList(

                        AccessibilityServiceInfo.FEEDBACK_ALL_MASK);

        if (serviceInfoList == null || serviceInfoList.isEmpty()) {

            return packageNames;

        }

        for (AccessibilityServiceInfo serviceInfo : serviceInfoList) {

            final ComponentName serviceComponent = ComponentName.unflattenFromString(

                    serviceInfo.getId());

            if (serviceComponent != null) {

                packageNames.add(serviceComponent.getPackageName());

            }

        }

        return packageNames;

    }

}

/*

 * Copyright (C) 2023 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.android.settingslib.fuelgauge;

import static com.google.common.truth.Truth.assertThat;

import static org.mockito.ArgumentMatchers.any;

import static org.mockito.Mockito.doReturn;

import static org.mockito.Mockito.eq;

import static org.mockito.Mockito.spy;

import static org.mockito.Mockito.verify;

import static org.robolectric.Shadows.shadowOf;

import android.accessibilityservice.AccessibilityServiceInfo;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import android.provider.Settings;

import android.view.accessibility.AccessibilityManager;

import androidx.test.core.app.ApplicationProvider;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.mockito.Mock;

import org.mockito.MockitoAnnotations;

import org.robolectric.RobolectricTestRunner;

import org.robolectric.shadows.ShadowAccessibilityManager;

import java.util.Arrays;

@RunWith(RobolectricTestRunner.class)

public class BatteryUtilsTest {

    private static final String DEFAULT_TTS_PACKAGE = "com.abc.talkback";

    private static final String ACCESSIBILITY_PACKAGE = "com.def.talkback";

    private Context mContext;

    private AccessibilityManager mAccessibilityManager;

    private ShadowAccessibilityManager mShadowAccessibilityManager;

    @Mock

    private AccessibilityServiceInfo mAccessibilityServiceInfo1;

    @Mock

    private AccessibilityServiceInfo mAccessibilityServiceInfo2;

    @Before

    public void setUp() {

        MockitoAnnotations.initMocks(this);

        mContext = spy(ApplicationProvider.getApplicationContext());

        doReturn(mContext).when(mContext).getApplicationContext();

        mAccessibilityManager = spy(mContext.getSystemService(AccessibilityManager.class));

        mShadowAccessibilityManager = shadowOf(mAccessibilityManager);

        doReturn(mAccessibilityManager).when(mContext)

                .getSystemService(AccessibilityManager.class);

        setTtsPackageName(DEFAULT_TTS_PACKAGE);

        doReturn(Arrays.asList(mAccessibilityServiceInfo1, mAccessibilityServiceInfo2))

                .when(mAccessibilityManager)

                .getEnabledAccessibilityServiceList(AccessibilityServiceInfo.FEEDBACK_ALL_MASK);

        doReturn(ACCESSIBILITY_PACKAGE + "/.TalkbackService").when(mAccessibilityServiceInfo1)

                .getId();

        doReturn("dummy_package_name").when(mAccessibilityServiceInfo2).getId();

    }

    @Test

    public void getBatteryIntent_registerReceiver() {

        BatteryUtils.getBatteryIntent(mContext);

        verify(mContext).registerReceiver(eq(null), any(IntentFilter.class));

    }

    @Test

    public void getA11yPackageNames_returnDefaultTtsPackageName() {

        mShadowAccessibilityManager.setEnabled(false);

        assertThat(BatteryUtils.getA11yPackageNames(mContext))

                .containsExactly(DEFAULT_TTS_PACKAGE);

    }

    @Test

    public void getA11yPackageNames_returnExpectedPackageNames() {

        mShadowAccessibilityManager.setEnabled(true);

        assertThat(BatteryUtils.getA11yPackageNames(mContext))

                .containsExactly(DEFAULT_TTS_PACKAGE, ACCESSIBILITY_PACKAGE);

    }

    private void setTtsPackageName(String defaultTtsPackageName) {

        Settings.Secure.putString(mContext.getContentResolver(),

                Settings.Secure.TTS_DEFAULT_SYNTH, defaultTtsPackageName);

    }

}