The helper for slice of carrier and non-Carrier, used by ProviderModelSlice.

create a helper file.
create a res/drawable/ic_signal_strength_zero_bar_no_internet.xml
create string at res/values/strings.xml

Bug: 173971144
Test: atest ProviderModelSliceHelperTest
Change-Id: I7f63a6b04784325989e776cb140017314ebde4ce

res/drawable/ic_signal_strength_zero_bar_no_internet.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0"
+    android:tint="?android:attr/colorControlNormal">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M2,22l16,0l0,-2l-11,0l13,-13l0,1l2,0l0,-6z"
+        android:strokeAlpha="0.3"
+        android:fillAlpha="0.3"/>
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M20,10h2v8h-2z"/>
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M20,20h2v2h-2z"/>
+</vector>

res/values/strings.xml

@@ -12527,6 +12527,15 @@
     <!-- Label text to turn off airplane mode. [CHAR LIMIT=40] -->
     <string name="turn_off_airplane_mode">Turn off Airplane Mode</string>
 
+    <!-- Provider Model: Summary indicating that a SIM has an active mobile data connection [CHAR LIMIT=50] -->
+    <string name="mobile_data_connection_active">Active, <xliff:g id="network_data_rat" example="LTE">%1$s</xliff:g></string>
+    <!-- Provider Model: Summary indicating that a SIM has an active mobile data connection [CHAR LIMIT=50] -->
+    <string name="mobile_data_off_summary">Internet off</string>
+    <!-- Provider Model: Summary indicating that non-carrier network unavailable [CHAR LIMIT=50] -->
+    <string name="non_carrier_network_unavailable">Non\u2011carrier networks unavailable</string>
+    <!-- Provider Model: Summary indicating that non-carrier and carrier network unavailable [CHAR LIMIT=50] -->
+    <string name="all_network_unavailable">Networks unavailable</string>
+
     <!-- Summary for preference when Bedtime mode is on [CHAR LIMIT=NONE] -->
     <string name="aware_summary_when_bedtime_on">Unavailable because bedtime mode is on</string>
 

src/com/android/settings/Utils.java

@@ -1156,5 +1156,4 @@ public final class Utils extends com.android.settingslib.Utils {
     public static boolean isProviderModelEnabled(Context context) {
         return FeatureFlagUtils.isEnabled(context, FeatureFlagUtils.SETTINGS_PROVIDER_MODEL);
     }
-
 }

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

@@ -0,0 +1,275 @@
+/*
+ * 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.android.settings.network.telephony.MobileNetworkUtils.NO_CELL_DATA_TYPE_ICON;
+
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Color;
+import android.graphics.drawable.ColorDrawable;
+import android.graphics.drawable.Drawable;
+import android.net.Uri;
+import android.telephony.ServiceState;
+import android.telephony.SignalStrength;
+import android.telephony.SubscriptionInfo;
+import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyManager;
+import android.text.TextUtils;
+import android.util.Log;
+
+import androidx.annotation.Nullable;
+import androidx.annotation.VisibleForTesting;
+import androidx.core.graphics.drawable.IconCompat;
+import androidx.slice.builders.GridRowBuilder;
+import androidx.slice.builders.ListBuilder;
+import androidx.slice.builders.SliceAction;
+
+import com.android.settings.R;
+import com.android.settings.Utils;
+import com.android.settings.network.telephony.MobileNetworkUtils;
+import com.android.settings.slices.CustomSliceable;
+import com.android.settings.wifi.slice.WifiSliceItem;
+import com.android.settingslib.WirelessUtils;
+import com.android.settingslib.net.SignalStrengthUtil;
+import com.android.settingslib.utils.ThreadUtils;
+import com.android.wifitrackerlib.WifiEntry;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Optional;
+import java.util.Set;
+import java.util.concurrent.Semaphore;
+import java.util.concurrent.atomic.AtomicReference;
+import java.util.stream.Collectors;
+
+/**
+ * The helper is for slice of carrier and non-Carrier, used by ProviderModelSlice.
+ */
+public class ProviderModelSliceHelper {
+    private static final String TAG = "ProviderModelSlice";
+    private final SubscriptionManager mSubscriptionManager;
+    private final TelephonyManager mTelephonyManager;
+    protected final Context mContext;
+    private CustomSliceable mSliceable;
+
+    public ProviderModelSliceHelper(Context context, CustomSliceable sliceable) {
+        mContext = context;
+        mSliceable = sliceable;
+        mSubscriptionManager = context.getSystemService(SubscriptionManager.class);
+        mTelephonyManager = context.getSystemService(TelephonyManager.class);
+    }
+
+    private static void log(String s) {
+        Log.d(TAG, s);
+    }
+
+    protected ListBuilder.HeaderBuilder createHeader() {
+        return new ListBuilder.HeaderBuilder()
+                .setTitle(mContext.getText(R.string.summary_placeholder))
+                .setPrimaryAction(getPrimarySliceAction());
+    }
+
+    protected ListBuilder createListBuilder(Uri uri) {
+        final ListBuilder builder = new ListBuilder(mContext, uri, ListBuilder.INFINITY)
+                .setAccentColor(-1)
+                .setKeywords(getKeywords());
+        return builder;
+    }
+
+    protected GridRowBuilder createMessageGridRow(int messageResId) {
+        final CharSequence title = mContext.getText(messageResId);
+        return new GridRowBuilder()
+                // Add cells to the grid row.
+                .addCell(new GridRowBuilder.CellBuilder().addTitleText(title))
+                .setPrimaryAction(getPrimarySliceAction());
+    }
+
+    @Nullable
+    protected WifiSliceItem getConnectedWifiItem(List<WifiSliceItem> wifiList) {
+        if (wifiList == null) {
+            return null;
+        }
+        Optional<WifiSliceItem> item = wifiList.stream()
+                .filter(x -> x.getConnectedState() == WifiEntry.CONNECTED_STATE_CONNECTED)
+                .findFirst();
+        return item.isPresent() ? item.get() : null;
+    }
+
+    protected boolean hasCarrier() {
+        if (isAirplaneModeEnabled()
+                || mSubscriptionManager == null || mTelephonyManager == null
+                || mSubscriptionManager.getDefaultDataSubscriptionId()
+                == mSubscriptionManager.INVALID_SUBSCRIPTION_ID) {
+            return false;
+        }
+        return true;
+    }
+
+    protected ListBuilder.RowBuilder createCarrierRow() {
+        final String title = getMobileTitle();
+        final String summary = getMobileSummary();
+        Drawable drawable = mContext.getDrawable(
+                R.drawable.ic_signal_strength_zero_bar_no_internet);
+        try {
+            drawable = getMobileDrawable(drawable);
+        } catch (Throwable e) {
+            e.printStackTrace();
+        }
+        final IconCompat levelIcon = Utils.createIconWithDrawable(drawable);
+        final PendingIntent toggleAction = mSliceable.getBroadcastIntent(mContext);
+        final SliceAction toggleSliceAction = SliceAction.createToggle(toggleAction,
+                "mobile_toggle" /* actionTitle */, isMobileDataEnabled());
+        final ListBuilder.RowBuilder rowBuilder = new ListBuilder.RowBuilder()
+                .setTitle(title)
+                .setTitleItem(levelIcon, ListBuilder.ICON_IMAGE)
+                .addEndItem(toggleSliceAction)
+                .setPrimaryAction(toggleSliceAction)
+                .setSubtitle(summary);
+        return rowBuilder;
+    }
+
+    protected SliceAction getPrimarySliceAction() {
+        return SliceAction.createDeeplink(
+                getPrimaryAction(),
+                Utils.createIconWithDrawable(new ColorDrawable(Color.TRANSPARENT)),
+                ListBuilder.ICON_IMAGE, mContext.getText(R.string.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 */);
+    }
+
+    private boolean shouldInflateSignalStrength(int subId) {
+        return SignalStrengthUtil.shouldInflateSignalStrength(mContext, subId);
+    }
+
+    protected boolean isAirplaneModeEnabled() {
+        return WirelessUtils.isAirplaneModeOn(mContext);
+    }
+
+    protected boolean isMobileDataEnabled() {
+        if (mTelephonyManager == null) {
+            return false;
+        }
+        return mTelephonyManager.isDataEnabled();
+    }
+
+    protected boolean isDataSimActive() {
+        return MobileNetworkUtils.activeNetworkIsCellular(mContext);
+    }
+
+    protected boolean isNoCarrierData() {
+        if (mTelephonyManager == null) {
+            return false;
+        }
+        boolean mobileDataOnAndNoData = isMobileDataEnabled()
+                && mTelephonyManager.getDataState() != mTelephonyManager.DATA_CONNECTED;
+        ServiceState serviceState = mTelephonyManager.getServiceState();
+        boolean mobileDataOffAndOutOfService = !isMobileDataEnabled() && serviceState != null
+                && serviceState.getState() == serviceState.STATE_OUT_OF_SERVICE;
+        log("mobileDataOnAndNoData: " + mobileDataOnAndNoData
+                + ",mobileDataOffAndOutOfService: " + mobileDataOffAndOutOfService);
+        return mobileDataOnAndNoData || mobileDataOffAndOutOfService;
+    }
+
+    private boolean isAirplaneSafeNetworksModeEnabled() {
+        // TODO: isAirplaneSafeNetworksModeEnabled is not READY
+        return false;
+    }
+
+    @VisibleForTesting
+    Drawable getMobileDrawable(Drawable drawable) throws Throwable {
+        // set color and drawable
+        if (mTelephonyManager == null) {
+            log("mTelephonyManager == null");
+            return drawable;
+        }
+        if (!isNoCarrierData()) {
+            Semaphore lock = new Semaphore(0);
+            AtomicReference<Drawable> shared = new AtomicReference<>();
+            ThreadUtils.postOnMainThread(() -> {
+                shared.set(getDrawableWithSignalStrength());
+                lock.release();
+            });
+            lock.acquire();
+            drawable = shared.get();
+        }
+
+        if (isDataSimActive()) {
+            drawable.setTint(Utils.getColorAccentDefaultColor(mContext));
+        }
+        return drawable;
+    }
+
+    /**
+     * To get the signal bar icon with level.
+     *
+     * @return The Drawable which is a signal bar icon with level.
+     */
+    public Drawable getDrawableWithSignalStrength() {
+        final SignalStrength strength = mTelephonyManager.getSignalStrength();
+        int level = (strength == null) ? 0 : strength.getLevel();
+        int numLevels = SignalStrength.NUM_SIGNAL_STRENGTH_BINS;
+        if (mSubscriptionManager != null && shouldInflateSignalStrength(
+                mSubscriptionManager.getDefaultDataSubscriptionId())) {
+            level += 1;
+            numLevels += 1;
+        }
+        return MobileNetworkUtils.getSignalStrengthIcon(mContext, level, numLevels,
+                NO_CELL_DATA_TYPE_ICON, false);
+    }
+
+    private String getMobileSummary() {
+        String summary = "";
+        //TODO: get radio technology.
+        String networkType = "";
+        if (isDataSimActive()) {
+            summary = mContext.getString(R.string.mobile_data_connection_active, networkType);
+        } else if (!isMobileDataEnabled()) {
+            summary = mContext.getString(R.string.mobile_data_off_summary);
+        }
+        return summary;
+    }
+
+    private String getMobileTitle() {
+        String title = mContext.getText(R.string.mobile_data_settings_title).toString();
+        if (mSubscriptionManager == null) {
+            return title;
+        }
+        final SubscriptionInfo defaultSubscription = mSubscriptionManager.getActiveSubscriptionInfo(
+                mSubscriptionManager.getDefaultDataSubscriptionId());
+        if (defaultSubscription != null) {
+            title = defaultSubscription.getDisplayName().toString();
+        }
+        return title;
+    }
+
+    protected SubscriptionManager getSubscriptionManager() {
+        return mSubscriptionManager;
+    }
+
+    private Set<String> getKeywords() {
+        final String keywords = mContext.getString(R.string.keywords_internet);
+        return Arrays.stream(TextUtils.split(keywords, ","))
+                .map(String::trim)
+                .collect(Collectors.toSet());
+    }
+}

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

@@ -147,7 +147,7 @@ public class WifiSlice implements CustomSliceable {
         return builder;
     }
 
-    private ListBuilder.RowBuilder getWifiSliceItemRow(WifiSliceItem wifiSliceItem) {
+    protected ListBuilder.RowBuilder getWifiSliceItemRow(WifiSliceItem wifiSliceItem) {
         final CharSequence title = wifiSliceItem.getTitle();
         final IconCompat levelIcon = getWifiSliceItemLevelIcon(wifiSliceItem);
         final ListBuilder.RowBuilder rowBuilder = new ListBuilder.RowBuilder()

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

@@ -0,0 +1,307 @@
+/*
+ * 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 junit.framework.Assert.assertEquals;
+
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.drawable.Drawable;
+import android.net.ConnectivityManager;
+import android.net.Network;
+import android.net.NetworkCapabilities;
+import android.net.Uri;
+import android.os.PersistableBundle;
+import android.telephony.CarrierConfigManager;
+import android.telephony.ServiceState;
+import android.telephony.SubscriptionInfo;
+import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyManager;
+
+import androidx.slice.Slice;
+import androidx.slice.builders.GridRowBuilder;
+import androidx.slice.builders.GridRowBuilder.CellBuilder;
+import androidx.slice.builders.ListBuilder;
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import com.android.settings.Utils;
+import com.android.settings.slices.CustomSliceable;
+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 ProviderModelSliceHelperTest {
+    private Context mContext;
+    private MockProviderModelSliceHelper mProviderModelSliceHelper;
+    private PersistableBundle mBundle;
+    private Network mNetwork;
+    private NetworkCapabilities mNetworkCapabilities;
+
+    @Mock
+    private SubscriptionManager mSubscriptionManager;
+    @Mock
+    private CarrierConfigManager mCarrierConfigManager;
+    @Mock
+    private ConnectivityManager mConnectivityManager;
+    @Mock
+    private TelephonyManager mTelephonyManager;
+    @Mock
+    private ServiceState mServiceState;
+    @Mock
+    private WifiSliceItem mWifiSliceItem1;
+    @Mock
+    private WifiSliceItem mWifiSliceItem2;
+    @Mock
+    private SubscriptionInfo mDefaultDataSubscriptionInfo;
+    @Mock
+    private Drawable mDrawableWithSignalStrength;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = spy(ApplicationProvider.getApplicationContext());
+        mBundle = new PersistableBundle();
+        mNetwork = new Network(anyInt());
+
+        when(mContext.getSystemService(SubscriptionManager.class)).thenReturn(mSubscriptionManager);
+        when(mContext.getSystemService(CarrierConfigManager.class)).thenReturn(
+                mCarrierConfigManager);
+        when(mCarrierConfigManager.getConfigForSubId(anyInt())).thenReturn(mBundle);
+        when(mContext.getSystemService(ConnectivityManager.class)).thenReturn(mConnectivityManager);
+        when(mConnectivityManager.getActiveNetwork()).thenReturn(mNetwork);
+        when(mContext.getSystemService(TelephonyManager.class)).thenReturn(mTelephonyManager);
+        when(mTelephonyManager.createForSubscriptionId(anyInt())).thenReturn(mTelephonyManager);
+
+        TestCustomSliceable testCustomSliceable = new TestCustomSliceable();
+        mProviderModelSliceHelper = new MockProviderModelSliceHelper(mContext, testCustomSliceable);
+    }
+
+    @Test
+    public void createMessageGridRow_inputTheResourceId_verifyTitle() {
+        int messageResId = ResourcesUtils.getResourcesId(mContext, "string",
+                "non_carrier_network_unavailable");
+        CharSequence title = ResourcesUtils.getResourcesString(mContext,
+                "non_carrier_network_unavailable");
+
+        GridRowBuilder testGridRow = mProviderModelSliceHelper.createMessageGridRow(messageResId);
+        List<CellBuilder> cellItem = testGridRow.getCells();
+
+        assertThat(cellItem.get(0).getTitle()).isEqualTo(title);
+    }
+
+    @Test
+    public void getConnectedWifiItem_inputListInvolveOneConnectedWifiItem_verifyReturnItem() {
+        when(mWifiSliceItem1.getConnectedState()).thenReturn(WifiEntry.CONNECTED_STATE_CONNECTED);
+        when(mWifiSliceItem2.getConnectedState()).thenReturn(
+                WifiEntry.CONNECTED_STATE_DISCONNECTED);
+        List<WifiSliceItem> wifiList = new ArrayList<>();
+        wifiList.add(mWifiSliceItem1);
+        wifiList.add(mWifiSliceItem2);
+
+        WifiSliceItem testItem = mProviderModelSliceHelper.getConnectedWifiItem(wifiList);
+
+        assertThat(testItem).isNotNull();
+        assertEquals(mWifiSliceItem1, testItem);
+    }
+
+    @Test
+    public void getConnectedWifiItem_inputListInvolveNoConnectedWifiItem_verifyReturnItem() {
+        when(mWifiSliceItem1.getConnectedState()).thenReturn(
+                WifiEntry.CONNECTED_STATE_DISCONNECTED);
+        when(mWifiSliceItem2.getConnectedState()).thenReturn(
+                WifiEntry.CONNECTED_STATE_DISCONNECTED);
+        List<WifiSliceItem> wifiList = new ArrayList<>();
+        wifiList.add(mWifiSliceItem1);
+        wifiList.add(mWifiSliceItem2);
+
+        WifiSliceItem testItem = mProviderModelSliceHelper.getConnectedWifiItem(wifiList);
+
+        assertThat(testItem).isNull();
+    }
+
+    @Test
+    public void getConnectedWifiItem_inputNull_verifyReturnItem() {
+        List<WifiSliceItem> wifiList = null;
+
+        WifiSliceItem testItem = mProviderModelSliceHelper.getConnectedWifiItem(wifiList);
+
+        assertThat(testItem).isNull();
+    }
+
+    @Test
+    public void createCarrierRow_hasDefaultDataSubscriptionId_verifyTitle() {
+        String expectDisplayName = "Name1";
+        int defaultDataSubId = SubscriptionManager.getDefaultDataSubscriptionId();
+        when(mSubscriptionManager.getActiveSubscriptionInfo(defaultDataSubId)).thenReturn(
+                mDefaultDataSubscriptionInfo);
+        when(mDefaultDataSubscriptionInfo.getDisplayName()).thenReturn(expectDisplayName);
+        when(mServiceState.getState()).thenReturn(ServiceState.STATE_IN_SERVICE);
+        mBundle.putBoolean(CarrierConfigManager.KEY_INFLATE_SIGNAL_STRENGTH_BOOL, false);
+
+        ListBuilder.RowBuilder testRowBuild = mProviderModelSliceHelper.createCarrierRow();
+
+        assertThat(testRowBuild.getTitle()).isEqualTo(expectDisplayName);
+    }
+
+    @Test
+    public void isNoCarrierData_mobileDataOnAndNoData_returnTrue() {
+        when(mTelephonyManager.isDataEnabled()).thenReturn(true);
+        when(mTelephonyManager.getDataState()).thenReturn(mTelephonyManager.DATA_DISCONNECTED);
+        when(mTelephonyManager.getServiceState()).thenReturn(mServiceState);
+        when(mServiceState.getState()).thenReturn(ServiceState.STATE_IN_SERVICE);
+
+        assertThat(mProviderModelSliceHelper.isNoCarrierData()).isTrue();
+    }
+
+    @Test
+    public void isNoCarrierData_mobileDataOffAndOutOfService_returnTrue() {
+        when(mTelephonyManager.isDataEnabled()).thenReturn(false);
+        when(mTelephonyManager.getDataState()).thenReturn(mTelephonyManager.DATA_DISCONNECTED);
+        when(mTelephonyManager.getServiceState()).thenReturn(mServiceState);
+        when(mServiceState.getState()).thenReturn(ServiceState.STATE_OUT_OF_SERVICE);
+
+        assertThat(mProviderModelSliceHelper.isNoCarrierData()).isTrue();
+    }
+
+    @Test
+    public void isNoCarrierData_mobileDataOnAndDataConnected_returnFalse() {
+        when(mTelephonyManager.isDataEnabled()).thenReturn(true);
+        when(mTelephonyManager.getDataState()).thenReturn(mTelephonyManager.DATA_CONNECTED);
+        when(mTelephonyManager.getServiceState()).thenReturn(mServiceState);
+        when(mServiceState.getState()).thenReturn(ServiceState.STATE_IN_SERVICE);
+
+        assertThat(mProviderModelSliceHelper.isNoCarrierData()).isFalse();
+    }
+
+    @Test
+    public void isNoCarrierData_mobileDataOffAndVoiceIsInService_returnFalse() {
+        when(mTelephonyManager.isDataEnabled()).thenReturn(false);
+        when(mTelephonyManager.getDataState()).thenReturn(mTelephonyManager.DATA_DISCONNECTED);
+        when(mTelephonyManager.getServiceState()).thenReturn(mServiceState);
+        when(mServiceState.getState()).thenReturn(ServiceState.STATE_IN_SERVICE);
+
+        assertThat(mProviderModelSliceHelper.isNoCarrierData()).isFalse();
+    }
+
+    @Test
+    public void getMobileDrawable_noCarrierData_getMobileDrawable() throws Throwable {
+        when(mTelephonyManager.isDataEnabled()).thenReturn(false);
+        when(mTelephonyManager.getDataState()).thenReturn(mTelephonyManager.DATA_DISCONNECTED);
+        when(mTelephonyManager.getServiceState()).thenReturn(mServiceState);
+        when(mServiceState.getState()).thenReturn(ServiceState.STATE_OUT_OF_SERVICE);
+        int defaultDataSubId = SubscriptionManager.getDefaultDataSubscriptionId();
+        when(mSubscriptionManager.getActiveSubscriptionInfo(defaultDataSubId)).thenReturn(
+                mDefaultDataSubscriptionInfo);
+        when(mConnectivityManager.getActiveNetwork()).thenReturn(null);
+        Drawable expectDrawable = mock(Drawable.class);
+
+        assertThat(mProviderModelSliceHelper.getMobileDrawable(expectDrawable)).isEqualTo(
+                expectDrawable);
+    }
+
+    @Test
+    public void getMobileDrawable_hasCarrierDataAndDataIsOnCellular_getMobileDrawable()
+            throws Throwable {
+        when(mTelephonyManager.isDataEnabled()).thenReturn(true);
+        when(mTelephonyManager.getDataState()).thenReturn(mTelephonyManager.DATA_CONNECTED);
+        when(mTelephonyManager.getServiceState()).thenReturn(mServiceState);
+        when(mServiceState.getState()).thenReturn(ServiceState.STATE_IN_SERVICE);
+        Drawable drawable = mock(Drawable.class);
+        int defaultDataSubId = SubscriptionManager.getDefaultDataSubscriptionId();
+        when(mSubscriptionManager.getActiveSubscriptionInfo(defaultDataSubId)).thenReturn(
+                mDefaultDataSubscriptionInfo);
+        addNetworkTransportType(NetworkCapabilities.TRANSPORT_CELLULAR);
+
+        assertThat(mProviderModelSliceHelper.getMobileDrawable(drawable)).isEqualTo(
+                mDrawableWithSignalStrength);
+
+        verify(mDrawableWithSignalStrength).setTint(Utils.getColorAccentDefaultColor(mContext));
+    }
+
+    @Test
+    public void getMobileDrawable_hasCarrierDataAndDataIsOnWifi_getMobileDrawable()
+            throws Throwable {
+        when(mTelephonyManager.isDataEnabled()).thenReturn(true);
+        when(mTelephonyManager.getDataState()).thenReturn(mTelephonyManager.DATA_CONNECTED);
+        when(mTelephonyManager.getServiceState()).thenReturn(mServiceState);
+        when(mServiceState.getState()).thenReturn(ServiceState.STATE_IN_SERVICE);
+        Drawable drawable = mock(Drawable.class);
+        int defaultDataSubId = SubscriptionManager.getDefaultDataSubscriptionId();
+        when(mSubscriptionManager.getActiveSubscriptionInfo(defaultDataSubId)).thenReturn(
+                mDefaultDataSubscriptionInfo);
+        addNetworkTransportType(NetworkCapabilities.TRANSPORT_WIFI);
+
+        assertThat(mProviderModelSliceHelper.getMobileDrawable(drawable)).isEqualTo(
+                mDrawableWithSignalStrength);
+    }
+
+    private void addNetworkTransportType(int networkType) {
+        mNetworkCapabilities = new NetworkCapabilities().addTransportType(networkType);
+        when(mConnectivityManager.getNetworkCapabilities(mNetwork)).thenReturn(
+                mNetworkCapabilities);
+    }
+
+    private class TestCustomSliceable implements CustomSliceable {
+        TestCustomSliceable() {
+        }
+
+        @Override
+        public Slice getSlice() {
+            return null;
+        }
+
+        @Override
+        public Uri getUri() {
+            return Uri.parse("content://android.settings.slices/action/provider_model");
+        }
+
+        @Override
+        public Intent getIntent() {
+            return new Intent();
+        }
+    }
+
+    private class MockProviderModelSliceHelper extends ProviderModelSliceHelper {
+        MockProviderModelSliceHelper(Context context, CustomSliceable sliceable) {
+            super(context, sliceable);
+        }
+
+        @Override
+        public Drawable getDrawableWithSignalStrength() {
+            return mDrawableWithSignalStrength;
+        }
+    }
+}

tests/unit/src/com/android/settings/testutils/ResourcesUtils.java

@@ -17,15 +17,43 @@ package com.android.settings.testutils;
 
 import android.content.Context;
 
+/**
+ * Test util to provide the correct resources.
+ */
 public final class ResourcesUtils {
+    /**
+     * Return a resource identifier for the given resource name.
+     * @param context Context to use.
+     * @param type Optional default resource type to find, if "type/" is not included in the name.
+     *             Can be null to require an explicit type.
+     * @param name The name of the desired resource.
+     * @return The associated resource identifier. Returns 0 if no such resource was found.
+     * (0 is not a valid resource ID.)
+     */
     public static int getResourcesId(Context context, String type, String name) {
         return context.getResources().getIdentifier(name, type, context.getPackageName());
     }
 
+    /**
+     * Returns a localized string from the application's package's default string table.
+     * @param context Context to use.
+     * @param name The name of the desired resource.
+     * @return The string data associated with the resource, stripped of styled text information.
+     */
     public static String getResourcesString(Context context, String name) {
         return context.getResources().getString(getResourcesId(context, "string", name));
     }
 
+    /**
+     * Return the string value associated with a particular neame of resource,
+     * substituting the format arguments as defined in {@link java.util.Formatter}
+     * and {@link java.lang.String#format}. It will be stripped of any styled text
+     * information.
+     * @param context Context to use.
+     * @param name The name of the desired resource.
+     * @param value The format arguments that will be used for substitution.
+     * @return The string data associated with the resource, stripped of styled text information.
+     */
     public static String getResourcesString(Context context, String name, Object... value) {
         return context.getResources().getString(getResourcesId(context, "string", name), value);
     }