Slice of Provider Model: add slice structure

Implement a slice which can show/update carrier networks.
Before and after: go/b173971144screenshot

Bug: 173971144
Test: atest NetworkProviderWorkerTest  (PASS)
atest ProviderModelSliceTest  (PASS)

Change-Id: I3f0dab364c88723ef3185a2ff040b1fbd1b099f4

src/com/android/settings/network/NetworkProviderSettings.java

@@ -103,8 +103,10 @@ public class NetworkProviderSettings extends RestrictedSettingsFragment
         implements Indexable, WifiPickerTracker.WifiPickerTrackerCallback,
         WifiDialog2.WifiDialog2Listener, DialogInterface.OnDismissListener {
 
-    private static final String TAG = "NetworkProviderSettings";
+    public static final String ACTION_NETWORK_PROVIDER_SETTINGS =
+            "android.settings.NETWORK_PROVIDER_SETTINGS";
 
+    private static final String TAG = "NetworkProviderSettings";
     // IDs of context menu
     static final int MENU_ID_CONNECT = Menu.FIRST + 1;
     @VisibleForTesting

src/com/android/settings/network/ProviderModelSlice.java

@@ -0,0 +1,204 @@
+/*
+ * Copyright (C) 2020 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.settings.network;
+
+
+import static android.app.slice.Slice.EXTRA_TOGGLE_STATE;
+
+import static com.android.settings.slices.CustomSliceRegistry.PROVIDER_MODEL_SLICE_URI;
+
+import android.app.settings.SettingsEnums;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.telephony.SubscriptionManager;
+import android.util.Log;
+
+import androidx.annotation.VisibleForTesting;
+import androidx.slice.Slice;
+import androidx.slice.builders.ListBuilder;
+
+import com.android.settings.R;
+import com.android.settings.SubSettings;
+import com.android.settings.network.telephony.MobileNetworkUtils;
+import com.android.settings.network.telephony.NetworkProviderWorker;
+import com.android.settings.slices.CustomSliceable;
+import com.android.settings.slices.SliceBackgroundWorker;
+import com.android.settings.slices.SliceBuilderUtils;
+import com.android.settings.wifi.slice.WifiSlice;
+import com.android.settings.wifi.slice.WifiSliceItem;
+import com.android.wifitrackerlib.WifiEntry;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * {@link CustomSliceable} for Wi-Fi and mobile data connection, used by generic clients.
+ */
+// ToDo If the provider model become default design in the future, the code needs to refactor
+// the whole structure and use new "data object", and then split provider model out of old design.
+public class ProviderModelSlice extends WifiSlice {
+
+    private static final String TAG = "ProviderModelSlice";
+    private final ProviderModelSliceHelper mHelper;
+
+    public ProviderModelSlice(Context context) {
+        super(context);
+        mHelper = getHelper();
+    }
+
+    @Override
+    public Uri getUri() {
+        return PROVIDER_MODEL_SLICE_URI;
+    }
+
+    private static void log(String s) {
+        Log.d(TAG, s);
+    }
+
+    protected boolean isApRowCollapsed() {
+        return false;
+    }
+
+    @Override
+    public Slice getSlice() {
+        // The provider model slice step:
+        // First section:  Add a Wi-Fi item which state is connected.
+        // Second section:  Add a carrier item.
+        // Third section:  Add the Wi-Fi items which are not connected.
+        // Fourth section:  If device has connection problem, this row show the message for user.
+
+        if (mHelper.isAirplaneModeEnabled()) {
+            log("Airplane mode is enabled.");
+            // ToDo Next CL will add the Airplane mode Message.
+            return mHelper.createListBuilder(getUri()).build();
+        }
+
+        int maxListSize = 0;
+        List<WifiSliceItem> wifiList = null;
+        final NetworkProviderWorker worker = getWorker();
+        if (worker != null) {
+            // get Wi-Fi list.
+            wifiList = worker.getResults();
+            maxListSize = worker.getApRowCount();
+        } else {
+            log("network provider worker is null.");
+        }
+
+        final boolean hasCarrier = mHelper.hasCarrier();
+        log("hasCarrier: " + hasCarrier);
+
+
+        final ListBuilder listBuilder = mHelper.createListBuilder(getUri());
+
+        // First section:  Add a Wi-Fi item which state is connected.
+        final WifiSliceItem connectedWifiItem = mHelper.getConnectedWifiItem(wifiList);
+        if (connectedWifiItem != null) {
+            log("get Wi-Fi item witch is connected");
+            listBuilder.addRow(getWifiSliceItemRow(connectedWifiItem));
+            maxListSize--;
+        }
+
+        // Second section:  Add a carrier item.
+        if (hasCarrier) {
+            listBuilder.addRow(mHelper.createCarrierRow());
+            maxListSize--;
+        }
+
+        // Third section:  Add the Wi-Fi items which are not connected.
+        if (wifiList != null) {
+            log("get Wi-Fi items which are not connected");
+            final List<WifiSliceItem> disconnectedWifiList = wifiList.stream()
+                    .filter(wifiSliceItem -> wifiSliceItem.getConnectedState()
+                            != WifiEntry.CONNECTED_STATE_CONNECTED)
+                    .limit(maxListSize)
+                    .collect(Collectors.toList());
+            for (WifiSliceItem item : disconnectedWifiList) {
+                listBuilder.addRow(getWifiSliceItemRow(item));
+            }
+        }
+
+        // Fourth section:  If device has connection problem, this row show the message for user.
+        // 1) show non_carrier_network_unavailable:
+        //    - while no wifi item
+        // 2) show all_network_unavailable:
+        //    - while no wifi item + no carrier
+        //    - while no wifi item + no data capability
+        if (worker == null || wifiList == null) {
+            log("wifiList is null");
+            int resId = R.string.non_carrier_network_unavailable;
+            if (!hasCarrier || mHelper.isNoCarrierData()) {
+                log("No carrier item or no carrier data.");
+                resId = R.string.all_network_unavailable;
+            }
+
+            if (!hasCarrier) {
+                // If there is no item in ProviderModelItem, slice needs a header.
+                listBuilder.setHeader(mHelper.createHeader());
+            }
+            listBuilder.addGridRow(mHelper.createMessageGridRow(resId));
+        }
+
+        return listBuilder.build();
+    }
+
+    /**
+     * Update the current carrier's mobile data status.
+     */
+    @Override
+    public void onNotifyChange(Intent intent) {
+        final SubscriptionManager subscriptionManager = mHelper.getSubscriptionManager();
+        if (subscriptionManager == null) {
+            return;
+        }
+        final boolean newState = intent.getBooleanExtra(EXTRA_TOGGLE_STATE,
+                mHelper.isMobileDataEnabled());
+        final int defaultSubId = subscriptionManager.getDefaultDataSubscriptionId();
+        log("defaultSubId:" + defaultSubId);
+        if (!SubscriptionManager.isUsableSubscriptionId(defaultSubId)) {
+            return; // No subscription - do nothing.
+        }
+
+        MobileNetworkUtils.setMobileDataEnabled(mContext, defaultSubId, newState,
+                false /* disableOtherSubscriptions */);
+    }
+
+    @Override
+    public Intent getIntent() {
+        final String screenTitle = mContext.getText(R.string.provider_internet_settings).toString();
+        return SliceBuilderUtils.buildSearchResultPageIntent(mContext,
+                NetworkProviderSettings.class.getName(), "" /* key */, screenTitle,
+                SettingsEnums.SLICE)
+                .setClassName(mContext.getPackageName(), SubSettings.class.getName())
+                .setData(getUri());
+    }
+
+    @Override
+    public Class getBackgroundWorkerClass() {
+        return NetworkProviderWorker.class;
+    }
+
+    @VisibleForTesting
+    ProviderModelSliceHelper getHelper() {
+        return new ProviderModelSliceHelper(mContext, this);
+    }
+
+    @VisibleForTesting
+    NetworkProviderWorker getWorker() {
+        return SliceBackgroundWorker.getInstance(getUri());
+    }
+}

src/com/android/settings/network/telephony/NetworkProviderWorker.java

@@ -0,0 +1,234 @@
+/*
+ * Copyright (C) 2020 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.settings.network.telephony;
+
+import android.content.Context;
+import android.database.ContentObserver;
+import android.net.Uri;
+import android.os.Handler;
+import android.os.Looper;
+import android.telephony.PhoneStateListener;
+import android.telephony.ServiceState;
+import android.telephony.SubscriptionInfo;
+import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyDisplayInfo;
+import android.telephony.TelephonyManager;
+import android.util.Log;
+
+import androidx.annotation.VisibleForTesting;
+
+import com.android.settings.network.MobileDataContentObserver;
+import com.android.settings.network.MobileDataEnabledListener;
+import com.android.settings.network.SubscriptionsChangeListener;
+import com.android.settings.wifi.slice.WifiScanWorker;
+
+import java.util.Collections;
+import java.util.concurrent.Executor;
+
+
+/**
+ * BackgroundWorker for Provider Model slice.
+ */
+public class NetworkProviderWorker extends WifiScanWorker implements
+        SignalStrengthListener.Callback, MobileDataEnabledListener.Client,
+        DataConnectivityListener.Client,
+        SubscriptionsChangeListener.SubscriptionsChangeListenerClient {
+    private static final String TAG = "NetworkProviderWorker";
+    private static final int PROVIDER_MODEL_DEFAULT_EXPANDED_ROW_COUNT = 4;
+    private DataContentObserver mMobileDataObserver;
+    private SignalStrengthListener mSignalStrengthListener;
+    private SubscriptionsChangeListener mSubscriptionsListener;
+    private MobileDataEnabledListener mDataEnabledListener;
+    private DataConnectivityListener mConnectivityListener;
+
+    private final Context mContext;
+    @VisibleForTesting
+    final PhoneStateListener mPhoneStateListener;
+    private final SubscriptionManager mSubscriptionManager;
+    private final TelephonyManager mTelephonyManager;
+
+    public NetworkProviderWorker(Context context, Uri uri) {
+        super(context, uri);
+        // Mobile data worker
+        final Handler handler = new Handler(Looper.getMainLooper());
+        mMobileDataObserver = new DataContentObserver(handler, this);
+
+        mContext = context;
+        mSubscriptionManager = mContext.getSystemService(SubscriptionManager.class);
+        mTelephonyManager = mContext.getSystemService(TelephonyManager.class);
+
+        mPhoneStateListener = new NetworkProviderPhoneStateListener(handler::post);
+        mSubscriptionsListener = new SubscriptionsChangeListener(context, this);
+        mDataEnabledListener = new MobileDataEnabledListener(context, this);
+        mConnectivityListener = new DataConnectivityListener(context, this);
+        mSignalStrengthListener = new SignalStrengthListener(context, this);
+    }
+
+    @Override
+    protected void onSlicePinned() {
+        mMobileDataObserver.register(mContext,
+                getDefaultSubscriptionId(mSubscriptionManager));
+
+        mSubscriptionsListener.start();
+        mDataEnabledListener.start(SubscriptionManager.getDefaultDataSubscriptionId());
+        mConnectivityListener.start();
+        mSignalStrengthListener.resume();
+        mTelephonyManager.listen(mPhoneStateListener, PhoneStateListener.LISTEN_SERVICE_STATE
+                | PhoneStateListener.LISTEN_ACTIVE_DATA_SUBSCRIPTION_ID_CHANGE
+                | PhoneStateListener.LISTEN_DISPLAY_INFO_CHANGED);
+
+        super.onSlicePinned();
+    }
+
+    @Override
+    protected void onSliceUnpinned() {
+        mMobileDataObserver.unregister(mContext);
+        mSubscriptionsListener.stop();
+        mDataEnabledListener.stop();
+        mConnectivityListener.stop();
+        mSignalStrengthListener.pause();
+        mTelephonyManager.listen(mPhoneStateListener, PhoneStateListener.LISTEN_NONE);
+        super.onSliceUnpinned();
+    }
+
+    @Override
+    public void close() {
+        mMobileDataObserver = null;
+        super.close();
+    }
+
+    @Override
+    public int getApRowCount() {
+        return PROVIDER_MODEL_DEFAULT_EXPANDED_ROW_COUNT;
+    }
+
+    /**
+     * To update the Slice.
+     */
+    public void updateSlice() {
+        notifySliceChange();
+    }
+
+    @Override
+    public void onSubscriptionsChanged() {
+        int defaultDataSubId = SubscriptionManager.getDefaultDataSubscriptionId();
+        Log.d(TAG, "onSubscriptionsChanged: defaultDataSubId:" + defaultDataSubId);
+
+        mSignalStrengthListener.updateSubscriptionIds(
+                SubscriptionManager.isUsableSubscriptionId(defaultDataSubId)
+                        ? Collections.singleton(defaultDataSubId) : Collections.emptySet());
+        if (defaultDataSubId != mDataEnabledListener.getSubId()) {
+            mDataEnabledListener.stop();
+            mDataEnabledListener.start(defaultDataSubId);
+        }
+        updateSlice();
+    }
+
+    @Override
+    public void onSignalStrengthChanged() {
+        Log.d(TAG, "onSignalStrengthChanged");
+        updateSlice();
+    }
+
+    @Override
+    public void onAirplaneModeChanged(boolean airplaneModeEnabled) {
+        Log.d(TAG, "onAirplaneModeChanged");
+        updateSlice();
+    }
+
+    @Override
+    public void onMobileDataEnabledChange() {
+        Log.d(TAG, "onMobileDataEnabledChange");
+        updateSlice();
+    }
+
+    @Override
+    public void onDataConnectivityChange() {
+        Log.d(TAG, "onDataConnectivityChange");
+        updateSlice();
+    }
+
+    /**
+     * Listen to update of mobile data change.
+     */
+    public class DataContentObserver extends ContentObserver {
+        private final NetworkProviderWorker mNetworkProviderWorker;
+
+        public DataContentObserver(Handler handler, NetworkProviderWorker backgroundWorker) {
+            super(handler);
+            mNetworkProviderWorker = backgroundWorker;
+        }
+
+        @Override
+        public void onChange(boolean selfChange) {
+            mNetworkProviderWorker.updateSlice();
+        }
+
+        /**
+         * To register the observer for mobile data changed.
+         * @param context the Context object.
+         * @param subId the default data subscription id.
+         */
+        public void register(Context context, int subId) {
+            final Uri uri = MobileDataContentObserver.getObservableUri(context, subId);
+            context.getContentResolver().registerContentObserver(uri, false, this);
+        }
+
+        /**
+         * To unregister the observer for mobile data changed.
+         * @param context the Context object.
+         */
+        public void unregister(Context context) {
+            context.getContentResolver().unregisterContentObserver(this);
+        }
+    }
+
+    class NetworkProviderPhoneStateListener extends PhoneStateListener {
+        NetworkProviderPhoneStateListener(Executor executor) {
+            super(executor);
+        }
+
+        @Override
+        public void onServiceStateChanged(ServiceState state) {
+            Log.d(TAG, "onServiceStateChanged voiceState=" + state.getState()
+                    + " dataState=" + state.getDataRegistrationState());
+            updateSlice();
+        }
+
+        @Override
+        public void onActiveDataSubscriptionIdChanged(int subId) {
+            Log.d(TAG, "onActiveDataSubscriptionIdChanged: subId=" + subId);
+            updateSlice();
+        }
+
+        @Override
+        public void onDisplayInfoChanged(TelephonyDisplayInfo telephonyDisplayInfo) {
+            Log.d(TAG, "onDisplayInfoChanged: telephonyDisplayInfo=" + telephonyDisplayInfo);
+            updateSlice();
+        }
+    }
+
+    protected static int getDefaultSubscriptionId(SubscriptionManager subscriptionManager) {
+        final SubscriptionInfo defaultSubscription = subscriptionManager.getActiveSubscriptionInfo(
+                subscriptionManager.getDefaultDataSubscriptionId());
+
+        if (defaultSubscription == null) {
+            return SubscriptionManager.INVALID_SUBSCRIPTION_ID; // No default subscription
+        }
+        return defaultSubscription.getSubscriptionId();
+    }
+}

src/com/android/settings/panel/InternetConnectivityPanel.java

@@ -16,6 +16,8 @@
 
 package com.android.settings.panel;
 
+import static com.android.settings.network.NetworkProviderSettings.ACTION_NETWORK_PROVIDER_SETTINGS;
+
 import android.app.settings.SettingsEnums;
 import android.content.Context;
 import android.content.Intent;
@@ -51,17 +53,19 @@ public class InternetConnectivityPanel implements PanelContent {
 
     @Override
     public CharSequence getTitle() {
-        return mContext.getText(R.string.internet_connectivity_panel_title);
+        return mContext.getText(Utils.isProviderModelEnabled(mContext)
+                ? R.string.provider_internet_settings : R.string.internet_connectivity_panel_title);
     }
 
     @Override
     public List<Uri> getSlices() {
         final List<Uri> uris = new ArrayList<>();
-        uris.add(CustomSliceRegistry.WIFI_SLICE_URI);
-        uris.add(CustomSliceRegistry.MOBILE_DATA_SLICE_URI);
         if (Utils.isProviderModelEnabled(mContext)) {
+            uris.add(CustomSliceRegistry.PROVIDER_MODEL_SLICE_URI);
             uris.add(CustomSliceRegistry.AIRPLANE_SAFE_NETWORKS_SLICE_URI);
         } else {
+            uris.add(CustomSliceRegistry.WIFI_SLICE_URI);
+            uris.add(CustomSliceRegistry.MOBILE_DATA_SLICE_URI);
             uris.add(AirplaneModePreferenceController.SLICE_URI);
         }
         return uris;
@@ -69,7 +73,8 @@ public class InternetConnectivityPanel implements PanelContent {
 
     @Override
     public Intent getSeeMoreIntent() {
-        return new Intent(Settings.ACTION_WIRELESS_SETTINGS)
+        return new Intent(Utils.isProviderModelEnabled(mContext)
+                ? ACTION_NETWORK_PROVIDER_SETTINGS : Settings.ACTION_WIRELESS_SETTINGS)
                 .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
     }
 

src/com/android/settings/slices/CustomSliceRegistry.java

@@ -40,6 +40,7 @@ import com.android.settings.location.LocationSlice;
 import com.android.settings.media.MediaOutputIndicatorSlice;
 import com.android.settings.media.RemoteMediaSlice;
 import com.android.settings.network.AirplaneSafeNetworksSlice;
+import com.android.settings.network.ProviderModelSlice;
 import com.android.settings.network.telephony.MobileDataSlice;
 import com.android.settings.notification.zen.ZenModeButtonPreferenceController;
 import com.android.settings.wifi.calling.WifiCallingSliceHelper;
@@ -167,6 +168,17 @@ public class CustomSliceRegistry {
             .appendEncodedPath(SettingsSlicesContract.PATH_SETTING_ACTION)
             .appendPath("mobile_data")
             .build();
+
+    /**
+     * Full {@link Uri} for the Provider Model Slice.
+     */
+    public static final Uri PROVIDER_MODEL_SLICE_URI = new Uri.Builder()
+            .scheme(ContentResolver.SCHEME_CONTENT)
+            .authority(SettingsSliceProvider.SLICE_AUTHORITY)
+            .appendEncodedPath(SettingsSlicesContract.PATH_SETTING_ACTION)
+            .appendPath("provider_model")
+            .build();
+
     /**
      * Full {@link Uri} for the Alarm volume Slice.
      */
@@ -176,6 +188,7 @@ public class CustomSliceRegistry {
             .appendPath(SettingsSlicesContract.PATH_SETTING_ACTION)
             .appendPath("alarm_volume")
             .build();
+
     /**
      * Full {@link Uri} for the Call Volume Slice.
      */
@@ -319,6 +332,7 @@ public class CustomSliceRegistry {
         sUriToSlice.put(LOW_STORAGE_SLICE_URI, LowStorageSlice.class);
         sUriToSlice.put(MEDIA_OUTPUT_INDICATOR_SLICE_URI, MediaOutputIndicatorSlice.class);
         sUriToSlice.put(MOBILE_DATA_SLICE_URI, MobileDataSlice.class);
+        sUriToSlice.put(PROVIDER_MODEL_SLICE_URI, ProviderModelSlice.class);
         sUriToSlice.put(WIFI_SLICE_URI, WifiSlice.class);
         sUriToSlice.put(DARK_THEME_SLICE_URI, DarkThemeSlice.class);
         sUriToSlice.put(REMOTE_MEDIA_SLICE_URI, RemoteMediaSlice.class);

src/com/android/settings/wifi/slice/WifiScanWorker.java

@@ -61,7 +61,7 @@ public class WifiScanWorker extends SliceBackgroundWorker<WifiSliceItem> impleme
     @VisibleForTesting
     final LifecycleRegistry mLifecycleRegistry;
     @VisibleForTesting
-    WifiPickerTracker mWifiPickerTracker;
+    protected WifiPickerTracker mWifiPickerTracker;
     // Worker thread used for WifiPickerTracker work
     private final HandlerThread mWorkerThread;
 

tests/unit/src/com/android/settings/network/ProviderModelSliceTest.java

@@ -0,0 +1,333 @@
+/*
+ * Copyright (C) 2020 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.settings.network;
+
+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.spy;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Color;
+import android.graphics.drawable.ColorDrawable;
+import android.net.ConnectivityManager;
+import android.net.Uri;
+import android.net.wifi.WifiManager;
+import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyManager;
+
+import androidx.slice.Slice;
+import androidx.slice.SliceProvider;
+import androidx.slice.builders.GridRowBuilder;
+import androidx.slice.builders.ListBuilder;
+import androidx.slice.builders.SliceAction;
+import androidx.slice.widget.SliceLiveData;
+import androidx.test.annotation.UiThreadTest;
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import com.android.settings.Utils;
+import com.android.settings.network.telephony.NetworkProviderWorker;
+import com.android.settings.testutils.ResourcesUtils;
+import com.android.settings.wifi.slice.WifiSliceItem;
+import com.android.wifitrackerlib.WifiEntry;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@RunWith(AndroidJUnit4.class)
+public class ProviderModelSliceTest {
+    private static final Uri PROVIDER_MODEL_SLICE_URI =
+            Uri.parse("content://com.android.settings.slices/action/provider_model");
+    private static final int MOCK_SLICE_LEVEL = 3;
+
+    private Context mContext;
+    private MockProviderModelSlice mMockProviderModelSlice;
+    List<WifiSliceItem> mWifiList = new ArrayList<>();
+    private ListBuilder mListBuilder;
+    private MockNetworkProviderWorker mMockNetworkProviderWorker;
+
+    @Mock
+    private SubscriptionManager mSubscriptionManager;
+    @Mock
+    private ConnectivityManager mConnectivityManager;
+    @Mock
+    private TelephonyManager mTelephonyManager;
+    @Mock
+    private WifiManager mWifiManager;
+    @Mock
+    private ProviderModelSliceHelper mProviderModelSliceHelper;
+    @Mock
+    private WifiSliceItem mMockWifiSliceItem1;
+    @Mock
+    private WifiSliceItem mMockWifiSliceItem2;
+    @Mock
+    private WifiSliceItem mMockWifiSliceItem3;
+    @Mock
+    ListBuilder.RowBuilder mMockCarrierRowBuild;
+    @Mock
+    ListBuilder.HeaderBuilder mMockHeader;
+    @Mock
+    GridRowBuilder mMockGridRowBuilderNonCarrierNetworkUnavailable;
+    @Mock
+    GridRowBuilder mMockGridRowBuilderAllNetworkUnavailable;
+
+    @Before
+    @UiThreadTest
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = spy(ApplicationProvider.getApplicationContext());
+
+        when(mContext.getSystemService(SubscriptionManager.class)).thenReturn(mSubscriptionManager);
+        when(mContext.getSystemService(ConnectivityManager.class)).thenReturn(mConnectivityManager);
+        when(mContext.getSystemService(TelephonyManager.class)).thenReturn(mTelephonyManager);
+        when(mTelephonyManager.createForSubscriptionId(anyInt())).thenReturn(mTelephonyManager);
+        when(mContext.getSystemService(WifiManager.class)).thenReturn(mWifiManager);
+
+
+        // Set-up specs for SliceMetadata.
+        SliceProvider.setSpecs(SliceLiveData.SUPPORTED_SPECS);
+        mMockNetworkProviderWorker = new MockNetworkProviderWorker(mContext,
+                PROVIDER_MODEL_SLICE_URI);
+        mMockProviderModelSlice = new MockProviderModelSlice(mContext, mMockNetworkProviderWorker);
+        mListBuilder = spy(new ListBuilder(mContext, PROVIDER_MODEL_SLICE_URI,
+                ListBuilder.INFINITY).setAccentColor(-1));
+        when(mProviderModelSliceHelper.createListBuilder(PROVIDER_MODEL_SLICE_URI)).thenReturn(
+                mListBuilder);
+
+        mWifiList = new ArrayList<>();
+        mMockNetworkProviderWorker.updateSelfResults(mWifiList);
+
+        mockBuilder();
+    }
+
+    @Test
+    @UiThreadTest
+    public void getSlice_noWorkerAndNoCarrier_getOneHeaderOneGridRowWithAllNetworkUnavailable() {
+        mWifiList.clear();
+        mMockProviderModelSlice = new MockProviderModelSlice(mContext, null);
+        mockHelperCondition(false, false, false, null);
+
+        final Slice slice = mMockProviderModelSlice.getSlice();
+
+        assertThat(slice).isNotNull();
+        verify(mListBuilder, times(1)).setHeader(mMockHeader);
+        verify(mListBuilder, times(1)).addGridRow(mMockGridRowBuilderAllNetworkUnavailable);
+    }
+
+    @Test
+    @UiThreadTest
+    public void getSlice_noWifiAndNoCarrier_getOneHeaderOneGridRowWithAllNetworkUnavailable() {
+        mWifiList.clear();
+        mMockNetworkProviderWorker.updateSelfResults(null);
+        mockHelperCondition(false, false, false, null);
+
+        final Slice slice = mMockProviderModelSlice.getSlice();
+
+        assertThat(slice).isNotNull();
+        verify(mListBuilder, times(1)).setHeader(mMockHeader);
+        verify(mListBuilder, times(1)).addGridRow(mMockGridRowBuilderAllNetworkUnavailable);
+    }
+
+    @Test
+    @UiThreadTest
+    public void getSlice_noWifiAndHasCarrierNoData_oneCarrierOneGridRowWithAllNetworkUnavailable() {
+        mWifiList.clear();
+        mMockNetworkProviderWorker.updateSelfResults(null);
+        mockHelperCondition(false, true, true, null);
+
+        final Slice slice = mMockProviderModelSlice.getSlice();
+
+        assertThat(slice).isNotNull();
+        verify(mListBuilder, times(1)).addRow(mMockCarrierRowBuild);
+        verify(mListBuilder, times(1)).addGridRow(mMockGridRowBuilderAllNetworkUnavailable);
+    }
+
+    @Test
+    @UiThreadTest
+    public void getSlice_noWifiAndNoCarrier_oneCarrierOneGridRowWithNonCarrierNetworkUnavailable() {
+        mWifiList.clear();
+        mMockProviderModelSlice = new MockProviderModelSlice(mContext, null);
+        mockHelperCondition(false, true, false, null);
+
+        final Slice slice = mMockProviderModelSlice.getSlice();
+
+        assertThat(slice).isNotNull();
+        verify(mListBuilder, times(1)).addRow(mMockCarrierRowBuild);
+        verify(mListBuilder, times(1)).addGridRow(mMockGridRowBuilderNonCarrierNetworkUnavailable);
+    }
+
+    @Test
+    @UiThreadTest
+    public void getSlice_haveTwoWifiAndOneCarrier_getCarrierAndTwoWiFi() {
+        mWifiList.clear();
+        mockWifiItemCondition(mMockWifiSliceItem1, "wifi1", "wifi1",
+                WifiEntry.CONNECTED_STATE_CONNECTED, "wifi1_key", true);
+        mWifiList.add(mMockWifiSliceItem1);
+        mockWifiItemCondition(mMockWifiSliceItem2, "wifi2", "wifi2",
+                WifiEntry.CONNECTED_STATE_DISCONNECTED, "wifi2_key", true);
+        mWifiList.add(mMockWifiSliceItem2);
+        mMockNetworkProviderWorker.updateSelfResults(mWifiList);
+        mockHelperCondition(false, true, false, mWifiList.get(0));
+
+        final Slice slice = mMockProviderModelSlice.getSlice();
+
+        assertThat(slice).isNotNull();
+        verify(mListBuilder, times(1)).addRow(mMockCarrierRowBuild);
+        verify(mListBuilder, times(3)).addRow(any(ListBuilder.RowBuilder.class));
+    }
+
+    @Test
+    @UiThreadTest
+    public void getSlice_haveOneConnectedWifiAndTwoDisconnectedWifiAndNoCarrier_getTwoRow() {
+        mWifiList.clear();
+        mockWifiItemCondition(mMockWifiSliceItem1, "wifi1", "wifi1",
+                WifiEntry.CONNECTED_STATE_CONNECTED, "wifi1_key", true);
+        mWifiList.add(mMockWifiSliceItem1);
+        mockWifiItemCondition(mMockWifiSliceItem2, "wifi2", "wifi2",
+                WifiEntry.CONNECTED_STATE_DISCONNECTED, "wifi2_key", true);
+        mWifiList.add(mMockWifiSliceItem2);
+        mockWifiItemCondition(mMockWifiSliceItem3, "wifi3", "wifi3",
+                WifiEntry.CONNECTED_STATE_DISCONNECTED, "wifi3_key", true);
+        mWifiList.add(mMockWifiSliceItem3);
+        mMockNetworkProviderWorker.updateSelfResults(mWifiList);
+        mockHelperCondition(false, false, false, mWifiList.get(0));
+
+        final Slice slice = mMockProviderModelSlice.getSlice();
+
+        assertThat(slice).isNotNull();
+        verify(mListBuilder, times(3)).addRow(any(ListBuilder.RowBuilder.class));
+    }
+
+    @Test
+    @UiThreadTest
+    public void getSlice_haveTwoDisconnectedWifiAndNoCarrier_getTwoRow() {
+        mWifiList.clear();
+        mockWifiItemCondition(mMockWifiSliceItem1, "wifi1", "wifi1",
+                WifiEntry.CONNECTED_STATE_DISCONNECTED, "wifi1_key", true);
+        mWifiList.add(mMockWifiSliceItem1);
+        mockWifiItemCondition(mMockWifiSliceItem2, "wifi2", "wifi2",
+                WifiEntry.CONNECTED_STATE_DISCONNECTED, "wifi2_key", true);
+        mWifiList.add(mMockWifiSliceItem2);
+        mMockNetworkProviderWorker.updateSelfResults(mWifiList);
+        mockHelperCondition(false, false, false, null);
+
+        final Slice slice = mMockProviderModelSlice.getSlice();
+
+        assertThat(slice).isNotNull();
+        verify(mListBuilder, times(2)).addRow(any(ListBuilder.RowBuilder.class));
+    }
+
+    @Test
+    public void providerModelSlice_hasCorrectUri() {
+        assertThat(mMockProviderModelSlice.getUri()).isEqualTo(PROVIDER_MODEL_SLICE_URI);
+    }
+
+    private void mockHelperCondition(boolean airplaneMode, boolean hasCarrier,
+            boolean isNoCarrierData, WifiSliceItem connectedWifiItem) {
+        when(mProviderModelSliceHelper.isAirplaneModeEnabled()).thenReturn(airplaneMode);
+        when(mProviderModelSliceHelper.hasCarrier()).thenReturn(hasCarrier);
+        when(mProviderModelSliceHelper.isNoCarrierData()).thenReturn(isNoCarrierData);
+        when(mProviderModelSliceHelper.getConnectedWifiItem(any())).thenReturn(connectedWifiItem);
+    }
+
+    private void mockWifiItemCondition(WifiSliceItem mockWifiItem, String title, String summary,
+            int connectedState, String key, boolean shouldEditBeforeConnect) {
+        when(mockWifiItem.getTitle()).thenReturn(title);
+        when(mockWifiItem.getSummary()).thenReturn(summary);
+        when(mockWifiItem.getConnectedState()).thenReturn(connectedState);
+        when(mockWifiItem.getLevel()).thenReturn(MOCK_SLICE_LEVEL);
+        when(mockWifiItem.getKey()).thenReturn(key);
+        when(mockWifiItem.shouldEditBeforeConnect()).thenReturn(shouldEditBeforeConnect);
+    }
+
+    private void mockBuilder() {
+        SliceAction mockSliceAction = getPrimarySliceAction();
+        when(mMockHeader.getTitle()).thenReturn("mockHeader");
+        when(mMockHeader.getPrimaryAction()).thenReturn(mockSliceAction);
+        when(mProviderModelSliceHelper.createHeader()).thenReturn(mMockHeader);
+
+        int resId = ResourcesUtils.getResourcesId(mContext, "string",
+                "non_carrier_network_unavailable");
+        when(mProviderModelSliceHelper.createMessageGridRow(resId)).thenReturn(
+                mMockGridRowBuilderNonCarrierNetworkUnavailable);
+        resId = ResourcesUtils.getResourcesId(mContext, "string",
+                "all_network_unavailable");
+        when(mProviderModelSliceHelper.createMessageGridRow(resId)).thenReturn(
+                mMockGridRowBuilderAllNetworkUnavailable);
+
+        when(mMockCarrierRowBuild.getTitle()).thenReturn("mockRow");
+        when(mMockCarrierRowBuild.getPrimaryAction()).thenReturn(mockSliceAction);
+        when(mProviderModelSliceHelper.createCarrierRow()).thenReturn(mMockCarrierRowBuild);
+    }
+
+    private SliceAction getPrimarySliceAction() {
+        return SliceAction.createDeeplink(
+                getPrimaryAction(),
+                Utils.createIconWithDrawable(new ColorDrawable(Color.TRANSPARENT)),
+                ListBuilder.ICON_IMAGE,
+                ResourcesUtils.getResourcesString(mContext, "summary_placeholder"));
+    }
+
+    private PendingIntent getPrimaryAction() {
+        final Intent intent = new Intent("android.settings.NETWORK_PROVIDER_SETTINGS")
+                .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        return PendingIntent.getActivity(mContext, 0 /* requestCode */,
+                intent, PendingIntent.FLAG_IMMUTABLE /* flags */);
+    }
+
+    public class MockNetworkProviderWorker extends NetworkProviderWorker {
+        MockNetworkProviderWorker(Context context, Uri uri) {
+            super(context, uri);
+        }
+
+        public void updateSelfResults(List<WifiSliceItem> results) {
+            this.updateResults(results);
+        }
+    }
+
+    public class MockProviderModelSlice extends ProviderModelSlice {
+        private MockNetworkProviderWorker mNetworkProviderWorker;
+
+        MockProviderModelSlice(Context context, MockNetworkProviderWorker networkProviderWorker) {
+            super(context);
+            mNetworkProviderWorker = networkProviderWorker;
+        }
+
+        @Override
+        ProviderModelSliceHelper getHelper() {
+            return mProviderModelSliceHelper;
+        }
+
+        @Override
+        NetworkProviderWorker getWorker() {
+            return mNetworkProviderWorker;
+        }
+    }
+}

tests/unit/src/com/android/settings/network/telephony/NetworkProviderWorkerTest.java

@@ -0,0 +1,264 @@
+/*
+ * Copyright (C) 2020 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.settings.network.telephony;
+
+import static com.android.settings.slices.CustomSliceRegistry.PROVIDER_MODEL_SLICE_URI;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.net.ConnectivityManager;
+import android.net.Uri;
+import android.telephony.ServiceState;
+import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyDisplayInfo;
+import android.telephony.TelephonyManager;
+
+import androidx.lifecycle.Lifecycle;
+import androidx.test.annotation.UiThreadTest;
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import com.android.wifitrackerlib.WifiEntry;
+import com.android.wifitrackerlib.WifiPickerTracker;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.util.Arrays;
+
+@RunWith(AndroidJUnit4.class)
+public class NetworkProviderWorkerTest {
+    private Context mContext;
+    private MockNetworkProviderWorker mMockNetworkProviderWorker;
+
+    @Mock
+    WifiPickerTracker mMockWifiPickerTracker;
+    @Mock
+    private SubscriptionManager mSubscriptionManager;
+    @Mock
+    private ConnectivityManager mConnectivityManager;
+    @Mock
+    private TelephonyManager mTelephonyManager;
+
+    @Before
+    @UiThreadTest
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = spy(ApplicationProvider.getApplicationContext());
+
+        when(mContext.getSystemService(SubscriptionManager.class)).thenReturn(mSubscriptionManager);
+        when(mContext.getSystemService(ConnectivityManager.class)).thenReturn(mConnectivityManager);
+        when(mContext.getSystemService(TelephonyManager.class)).thenReturn(mTelephonyManager);
+        when(mTelephonyManager.createForSubscriptionId(anyInt())).thenReturn(mTelephonyManager);
+
+        mMockNetworkProviderWorker = new MockNetworkProviderWorker(mContext,
+                PROVIDER_MODEL_SLICE_URI);
+        mMockNetworkProviderWorker.setWifiPickerTracker(mMockWifiPickerTracker);
+    }
+
+    @Test
+    @UiThreadTest
+    public void onConstructor_shouldBeInCreatedState() {
+        assertThat(mMockNetworkProviderWorker.getLifecycle().getCurrentState())
+                .isEqualTo(Lifecycle.State.CREATED);
+    }
+
+    @Test
+    @UiThreadTest
+    public void onSlicePinned_shouldBeInResumedState() {
+        mMockNetworkProviderWorker.onSlicePinned();
+
+        assertThat(mMockNetworkProviderWorker.getLifecycle().getCurrentState())
+                .isEqualTo(Lifecycle.State.RESUMED);
+    }
+
+    @Test
+    @UiThreadTest
+    public void onSliceUnpinned_shouldBeInCreatedState() {
+        mMockNetworkProviderWorker.onSlicePinned();
+        mMockNetworkProviderWorker.onSliceUnpinned();
+
+        assertThat(mMockNetworkProviderWorker.getLifecycle().getCurrentState())
+                .isEqualTo(Lifecycle.State.CREATED);
+    }
+
+    @Test
+    @UiThreadTest
+    public void close_shouldBeInDestroyedState() {
+        mMockNetworkProviderWorker.close();
+
+        assertThat(mMockNetworkProviderWorker.getLifecycle().getCurrentState())
+                .isEqualTo(Lifecycle.State.DESTROYED);
+    }
+
+    @Test
+    @UiThreadTest
+    public void getWifiEntry_connectedWifiKey_shouldGetConnectedWifi() {
+        final String key = "key";
+        final WifiEntry connectedWifiEntry = mock(WifiEntry.class);
+        when(connectedWifiEntry.getKey()).thenReturn(key);
+        when(mMockWifiPickerTracker.getConnectedWifiEntry()).thenReturn(connectedWifiEntry);
+
+        assertThat(mMockNetworkProviderWorker.getWifiEntry(key)).isEqualTo(connectedWifiEntry);
+    }
+
+    @Test
+    @UiThreadTest
+    public void getWifiEntry_reachableWifiKey_shouldGetReachableWifi() {
+        final String key = "key";
+        final WifiEntry reachableWifiEntry = mock(WifiEntry.class);
+        when(reachableWifiEntry.getKey()).thenReturn(key);
+        when(mMockWifiPickerTracker.getWifiEntries()).thenReturn(Arrays.asList(reachableWifiEntry));
+
+        assertThat(mMockNetworkProviderWorker.getWifiEntry(key)).isEqualTo(reachableWifiEntry);
+    }
+
+    @Test
+    @UiThreadTest
+    public void onSubscriptionsChanged_notifySubscriptionChanged_callUpdateSlice() {
+        mMockNetworkProviderWorker.onSlicePinned();
+        mMockNetworkProviderWorker.receiveNotification(false);
+
+        mMockNetworkProviderWorker.onSubscriptionsChanged();
+
+        assertThat(mMockNetworkProviderWorker.hasNotification()).isTrue();
+    }
+
+    @Test
+    @UiThreadTest
+    public void onAirplaneModeChanged_airplaneModeOn_callUpdateSlice() {
+        mMockNetworkProviderWorker.onSlicePinned();
+        mMockNetworkProviderWorker.receiveNotification(false);
+
+        mMockNetworkProviderWorker.onAirplaneModeChanged(false);
+
+        assertThat(mMockNetworkProviderWorker.hasNotification()).isTrue();
+    }
+
+    @Test
+    @UiThreadTest
+    public void onAirplaneModeChanged_airplaneModeOff_callUpdateSlice() {
+        mMockNetworkProviderWorker.onSlicePinned();
+        mMockNetworkProviderWorker.receiveNotification(false);
+
+        mMockNetworkProviderWorker.onAirplaneModeChanged(true);
+
+        assertThat(mMockNetworkProviderWorker.hasNotification()).isTrue();
+    }
+
+    @Test
+    @UiThreadTest
+    public void onSignalStrengthChanged_notifySignalStrengthChanged_callUpdateSlice() {
+        mMockNetworkProviderWorker.onSlicePinned();
+        mMockNetworkProviderWorker.receiveNotification(false);
+
+        mMockNetworkProviderWorker.onSignalStrengthChanged();
+
+        assertThat(mMockNetworkProviderWorker.hasNotification()).isTrue();
+    }
+
+    @Test
+    @UiThreadTest
+    public void onMobileDataEnabledChange_notifyMobileDataEnabledChanged_callUpdateSlice() {
+        mMockNetworkProviderWorker.onSlicePinned();
+        mMockNetworkProviderWorker.receiveNotification(false);
+
+        mMockNetworkProviderWorker.onMobileDataEnabledChange();
+
+        assertThat(mMockNetworkProviderWorker.hasNotification()).isTrue();
+    }
+
+    @Test
+    @UiThreadTest
+    public void onDataConnectivityChange_notifyDataConnectivityChanged_callUpdateSlice() {
+        mMockNetworkProviderWorker.onSlicePinned();
+        mMockNetworkProviderWorker.receiveNotification(false);
+
+        mMockNetworkProviderWorker.onDataConnectivityChange();
+
+        assertThat(mMockNetworkProviderWorker.hasNotification()).isTrue();
+    }
+
+    @Test
+    @UiThreadTest
+    public void onServiceStateChanged_notifyPhoneStateListener_callUpdateSlice() {
+        mMockNetworkProviderWorker.onSlicePinned();
+        mMockNetworkProviderWorker.receiveNotification(false);
+
+        mMockNetworkProviderWorker.mPhoneStateListener.onServiceStateChanged(new ServiceState());
+
+        assertThat(mMockNetworkProviderWorker.hasNotification()).isTrue();
+    }
+
+    @Test
+    @UiThreadTest
+    public void onActiveDataSubscriptionIdChanged_notifyPhoneStateListener_callUpdateSlice() {
+        mMockNetworkProviderWorker.onSlicePinned();
+        mMockNetworkProviderWorker.receiveNotification(false);
+
+        mMockNetworkProviderWorker.mPhoneStateListener.onActiveDataSubscriptionIdChanged(1);
+
+        assertThat(mMockNetworkProviderWorker.hasNotification()).isTrue();
+    }
+
+    @Test
+    @UiThreadTest
+    public void onDisplayInfoChanged_notifyPhoneStateListener_callUpdateSlice() {
+        mMockNetworkProviderWorker.onSlicePinned();
+        mMockNetworkProviderWorker.receiveNotification(false);
+
+        mMockNetworkProviderWorker.mPhoneStateListener.onDisplayInfoChanged(
+                new TelephonyDisplayInfo(14, 0));
+
+        assertThat(mMockNetworkProviderWorker.hasNotification()).isTrue();
+    }
+
+    public class MockNetworkProviderWorker extends NetworkProviderWorker {
+        private boolean mHasNotification = false;
+
+        MockNetworkProviderWorker(Context context, Uri uri) {
+            super(context, uri);
+        }
+
+        public void receiveNotification(boolean inputValue) {
+            mHasNotification = inputValue;
+        }
+
+        public boolean hasNotification() {
+            return mHasNotification;
+        }
+
+        @Override
+        public void updateSlice() {
+            super.updateSlice();
+            receiveNotification(true);
+        }
+
+        public void setWifiPickerTracker(WifiPickerTracker wifiPickerTracker) {
+            mWifiPickerTracker = wifiPickerTracker;
+        }
+    }
+}