Enable Notifications on AndroidTV

Also fix some tests that were broken on TV.

Bug: 78285926
Test: runtest systemui-notification

Change-Id: Icf4e5a1e02c3075b466305023c986ada52e9ec93
Merged-In: Icf4e5a1e02c3075b466305023c986ada52e9ec93

11 files changed, 195 insertions, 49 deletions

diff --git a/core/java/android/app/Notification.java b/core/java/android/app/Notification.java
index eeec7caad7ee..c5b80196cf26 100644
--- a/core/java/android/app/Notification.java
+++ b/core/java/android/app/Notification.java
@@ -5553,7 +5553,8 @@ public class Notification implements Parcelable
          *
          * @hide
          */
-        public static Notification maybeCloneStrippedForDelivery(Notification n, boolean isLowRam) {
+        public static Notification maybeCloneStrippedForDelivery(Notification n, boolean isLowRam,
+                Context context) {
             String templateClass = n.extras.getString(EXTRA_TEMPLATE);
 
             // Only strip views for known Styles because we won't know how to
@@ -5595,9 +5596,13 @@ public class Notification implements Parcelable
                 clone.extras.remove(EXTRA_REBUILD_HEADS_UP_CONTENT_VIEW_ACTION_COUNT);
             }
             if (isLowRam) {
-                clone.extras.remove(Notification.TvExtender.EXTRA_TV_EXTENDER);
-                clone.extras.remove(WearableExtender.EXTRA_WEARABLE_EXTENSIONS);
-                clone.extras.remove(CarExtender.EXTRA_CAR_EXTENDER);
+                String[] allowedServices = context.getResources().getStringArray(
+                        R.array.config_allowedManagedServicesOnLowRamDevices);
+                if (allowedServices.length == 0) {
+                    clone.extras.remove(Notification.TvExtender.EXTRA_TV_EXTENDER);
+                    clone.extras.remove(WearableExtender.EXTRA_WEARABLE_EXTENSIONS);
+                    clone.extras.remove(CarExtender.EXTRA_CAR_EXTENDER);
+                }
             }
             return clone;
         }
diff --git a/core/java/android/app/NotificationManager.java b/core/java/android/app/NotificationManager.java
index 93be932b7fd0..f6dc5d15f385 100644
--- a/core/java/android/app/NotificationManager.java
+++ b/core/java/android/app/NotificationManager.java
@@ -399,7 +399,8 @@ public class NotificationManager {
 
         ActivityManager am = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE);
         boolean isLowRam = am.isLowRamDevice();
-        final Notification copy = Builder.maybeCloneStrippedForDelivery(notification, isLowRam);
+        final Notification copy = Builder.maybeCloneStrippedForDelivery(notification, isLowRam,
+                mContext);
         try {
             service.enqueueNotificationWithTag(pkg, mContext.getOpPackageName(), tag, id,
                     copy, user.getIdentifier());
diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index 62440880eb26..54864f36c40a 100644
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -3181,6 +3181,9 @@
     <!-- An array of packages for which notifications cannot be blocked. -->
     <string-array translatable="false" name="config_nonBlockableNotificationPackages" />
 
+    <!-- An array of packages which can listen for notifications on low ram devices. -->
+    <string-array translatable="false" name="config_allowedManagedServicesOnLowRamDevices" />
+
     <!-- The default value for transition animation scale found in developer settings.
          1.0 corresponds to 1x animator scale, 0 means that there will be no transition
          animations. Note that this is only a default and will be overridden by a
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index 0800f510dd78..d155771fe79f 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -2979,6 +2979,8 @@
 
   <java-symbol type="array" name="config_nonBlockableNotificationPackages" />
 
+  <java-symbol type="array" name="config_allowedManagedServicesOnLowRamDevices" />
+
   <!-- Screen-size-dependent modes for picker dialogs. -->
   <java-symbol type="integer" name="time_picker_mode" />
   <java-symbol type="integer" name="date_picker_mode" />
diff --git a/services/core/java/com/android/server/notification/ManagedServices.java b/services/core/java/com/android/server/notification/ManagedServices.java
index 269a0dac41ab..f7becd518861 100644
--- a/services/core/java/com/android/server/notification/ManagedServices.java
+++ b/services/core/java/com/android/server/notification/ManagedServices.java
@@ -72,6 +72,8 @@ import java.util.Arrays;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
 
 /**
  * Manages the lifecycle of application-provided services bound by system server.
@@ -336,7 +338,7 @@ abstract public class ManagedServices {
         loadAllowedComponentsFromSettings();
     }
 
-    public void readXml(XmlPullParser parser)
+    public void readXml(XmlPullParser parser, Predicate<String> allowedManagedServicePackages)
             throws XmlPullParserException, IOException {
         // upgrade xml
         int xmlVersion = XmlUtils.readIntAttribute(parser, ATT_VERSION, 0);
@@ -361,10 +363,14 @@ abstract public class ManagedServices {
                     final int userId = XmlUtils.readIntAttribute(parser, ATT_USER_ID, 0);
                     final boolean isPrimary =
                             XmlUtils.readBooleanAttribute(parser, ATT_IS_PRIMARY, true);
-                    if (mUm.getUserInfo(userId) != null) {
-                        addApprovedList(approved, userId, isPrimary);
+
+                    if (allowedManagedServicePackages == null ||
+                            allowedManagedServicePackages.test(getPackageName(approved))) {
+                        if (mUm.getUserInfo(userId) != null) {
+                            addApprovedList(approved, userId, isPrimary);
+                        }
+                        mUseXml = true;
                     }
-                    mUseXml = true;
                 }
             }
         }
diff --git a/services/core/java/com/android/server/notification/NotificationManagerService.java b/services/core/java/com/android/server/notification/NotificationManagerService.java
index 594886458b6e..ec3949f9a441 100644
--- a/services/core/java/com/android/server/notification/NotificationManagerService.java
+++ b/services/core/java/com/android/server/notification/NotificationManagerService.java
@@ -233,6 +233,7 @@ import java.util.Map.Entry;
 import java.util.Objects;
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
+import java.util.function.Predicate;
 
 /** {@hide} */
 public class NotificationManagerService extends SystemService {
@@ -397,6 +398,7 @@ public class NotificationManagerService extends SystemService {
     private boolean mIsTelevision;
 
     private MetricsLogger mMetricsLogger;
+    private Predicate<String> mAllowedManagedServicePackages;
 
     private static class Archive {
         final int mBufferSize;
@@ -518,18 +520,15 @@ public class NotificationManagerService extends SystemService {
             } else if (RankingHelper.TAG_RANKING.equals(parser.getName())){
                 mRankingHelper.readXml(parser, forRestore);
             }
-            // No non-system managed services are allowed on low ram devices
-            if (canUseManagedServices()) {
-                if (mListeners.getConfig().xmlTag.equals(parser.getName())) {
-                    mListeners.readXml(parser);
-                    migratedManagedServices = true;
-                } else if (mAssistants.getConfig().xmlTag.equals(parser.getName())) {
-                    mAssistants.readXml(parser);
-                    migratedManagedServices = true;
-                } else if (mConditionProviders.getConfig().xmlTag.equals(parser.getName())) {
-                    mConditionProviders.readXml(parser);
-                    migratedManagedServices = true;
-                }
+            if (mListeners.getConfig().xmlTag.equals(parser.getName())) {
+                mListeners.readXml(parser, mAllowedManagedServicePackages);
+                migratedManagedServices = true;
+            } else if (mAssistants.getConfig().xmlTag.equals(parser.getName())) {
+                mAssistants.readXml(parser, mAllowedManagedServicePackages);
+                migratedManagedServices = true;
+            } else if (mConditionProviders.getConfig().xmlTag.equals(parser.getName())) {
+                mConditionProviders.readXml(parser, mAllowedManagedServicePackages);
+                migratedManagedServices = true;
             }
         }
 
@@ -1429,6 +1428,9 @@ public class NotificationManagerService extends SystemService {
         // This is a MangedServices object that keeps track of the assistant.
         mAssistants = notificationAssistants;
 
+        // Needs to be set before loadPolicyFile
+        mAllowedManagedServicePackages = this::canUseManagedServices;
+
         mPolicyFile = policyFile;
         loadPolicyFile();
 
@@ -3218,7 +3220,7 @@ public class NotificationManagerService extends SystemService {
             checkCallerIsSystemOrShell();
             final long identity = Binder.clearCallingIdentity();
             try {
-                if (canUseManagedServices()) {
+                if (mAllowedManagedServicePackages.test(pkg)) {
                     mConditionProviders.setPackageOrComponentEnabled(
                             pkg, userId, true, granted);
 
@@ -3349,7 +3351,7 @@ public class NotificationManagerService extends SystemService {
             checkCallerIsSystemOrShell();
             final long identity = Binder.clearCallingIdentity();
             try {
-                if (canUseManagedServices()) {
+                if (mAllowedManagedServicePackages.test(listener.getPackageName())) {
                     mConditionProviders.setPackageOrComponentEnabled(listener.flattenToString(),
                             userId, false, granted);
                     mListeners.setPackageOrComponentEnabled(listener.flattenToString(),
@@ -3375,7 +3377,7 @@ public class NotificationManagerService extends SystemService {
             checkCallerIsSystemOrShell();
             final long identity = Binder.clearCallingIdentity();
             try {
-                if (canUseManagedServices()) {
+                if (mAllowedManagedServicePackages.test(assistant.getPackageName())) {
                     mConditionProviders.setPackageOrComponentEnabled(assistant.flattenToString(),
                             userId, false, granted);
                     mAssistants.setPackageOrComponentEnabled(assistant.flattenToString(),
@@ -6183,9 +6185,19 @@ public class NotificationManagerService extends SystemService {
         }
     }
 
-    private boolean canUseManagedServices() {
-        return !mActivityManager.isLowRamDevice()
+    @VisibleForTesting
+    boolean canUseManagedServices(String pkg) {
+        boolean canUseManagedServices = !mActivityManager.isLowRamDevice()
                 || mPackageManagerClient.hasSystemFeature(PackageManager.FEATURE_WATCH);
+
+        for (String whitelisted : getContext().getResources().getStringArray(
+                R.array.config_allowedManagedServicesOnLowRamDevices)) {
+            if (whitelisted.equals(pkg)) {
+                canUseManagedServices = true;
+            }
+        }
+
+        return canUseManagedServices;
     }
 
     private class TrimCache {
diff --git a/services/tests/uiservicestests/src/com/android/server/notification/ManagedServicesTest.java b/services/tests/uiservicestests/src/com/android/server/notification/ManagedServicesTest.java
index 4668ed42b11e..d0a656c69f43 100644
--- a/services/tests/uiservicestests/src/com/android/server/notification/ManagedServicesTest.java
+++ b/services/tests/uiservicestests/src/com/android/server/notification/ManagedServicesTest.java
@@ -343,7 +343,7 @@ public class ManagedServicesTest extends UiServiceTestCase {
             parser.setInput(new BufferedInputStream(
                     new ByteArrayInputStream(baos.toByteArray())), null);
             parser.nextTag();
-            service.readXml(parser);
+            service.readXml(parser, null);
 
             verifyExpectedApprovedEntries(service);
             assertFalse(service.isPackageOrComponentAllowed("this.is.a.package.name", 0));
@@ -665,7 +665,7 @@ public class ManagedServicesTest extends UiServiceTestCase {
         parser.setInput(new BufferedInputStream(
                 new ByteArrayInputStream(xml.toString().getBytes())), null);
         parser.nextTag();
-        service.readXml(parser);
+        service.readXml(parser, null);
     }
 
     private void addExpectedServices(final ManagedServices service, final List<String> packages,
diff --git a/services/tests/uiservicestests/src/com/android/server/notification/NotificationAssistantsTest.java b/services/tests/uiservicestests/src/com/android/server/notification/NotificationAssistantsTest.java
index a8b9dff7b3e2..f9a4f784bf4f 100644
--- a/services/tests/uiservicestests/src/com/android/server/notification/NotificationAssistantsTest.java
+++ b/services/tests/uiservicestests/src/com/android/server/notification/NotificationAssistantsTest.java
@@ -124,7 +124,7 @@ public class NotificationAssistantsTest extends UiServiceTestCase {
         parser.setInput(new BufferedInputStream(
                 new ByteArrayInputStream(xml.toString().getBytes())), null);
         parser.nextTag();
-        mAssistants.readXml(parser);
+        mAssistants.readXml(parser, null);
 
         verify(mNm, never()).readDefaultAssistant(anyInt());
         verify(mAssistants, times(1)).addApprovedList(
diff --git a/services/tests/uiservicestests/src/com/android/server/notification/NotificationComparatorTest.java b/services/tests/uiservicestests/src/com/android/server/notification/NotificationComparatorTest.java
index 30fae01f3036..7ee050174d3c 100644
--- a/services/tests/uiservicestests/src/com/android/server/notification/NotificationComparatorTest.java
+++ b/services/tests/uiservicestests/src/com/android/server/notification/NotificationComparatorTest.java
@@ -138,12 +138,14 @@ public class NotificationComparatorTest extends UiServiceTestCase {
         mRecordInlineReply.setUserImportance(NotificationManager.IMPORTANCE_HIGH);
         mRecordInlineReply.setPackagePriority(Notification.PRIORITY_MAX);
 
-        Notification n5 = new Notification.Builder(mContext, TEST_CHANNEL_ID)
-                .setCategory(Notification.CATEGORY_MESSAGE).build();
-        mRecordSms = new NotificationRecord(mContext, new StatusBarNotification(smsPkg,
-                smsPkg, 1, "sms", smsUid, smsUid, n5, new UserHandle(userId),
-                "", 1299), getDefaultChannel());
-        mRecordSms.setUserImportance(NotificationManager.IMPORTANCE_DEFAULT);
+        if (smsPkg != null) {
+            Notification n5 = new Notification.Builder(mContext, TEST_CHANNEL_ID)
+                    .setCategory(Notification.CATEGORY_MESSAGE).build();
+            mRecordSms = new NotificationRecord(mContext, new StatusBarNotification(smsPkg,
+                    smsPkg, 1, "sms", smsUid, smsUid, n5, new UserHandle(userId),
+                    "", 1299), getDefaultChannel());
+            mRecordSms.setUserImportance(NotificationManager.IMPORTANCE_DEFAULT);
+        }
 
         Notification n6 = new Notification.Builder(mContext, TEST_CHANNEL_ID).build();
         mRecordStarredContact = new NotificationRecord(mContext, new StatusBarNotification(pkg2,
@@ -230,7 +232,9 @@ public class NotificationComparatorTest extends UiServiceTestCase {
         expected.add(mRecordColorized);
         expected.add(mRecordHighCall);
         expected.add(mRecordInlineReply);
-        expected.add(mRecordSms);
+        if (mRecordSms != null) {
+            expected.add(mRecordSms);
+        }
         expected.add(mRecordStarredContact);
         expected.add(mRecordContact);
         expected.add(mRecordEmail);
@@ -253,7 +257,9 @@ public class NotificationComparatorTest extends UiServiceTestCase {
     public void testMessaging() throws Exception {
         NotificationComparator comp = new NotificationComparator(mContext);
         assertTrue(comp.isImportantMessaging(mRecordInlineReply));
-        assertTrue(comp.isImportantMessaging(mRecordSms));
+        if (mRecordSms != null) {
+            assertTrue(comp.isImportantMessaging(mRecordSms));
+        }
         assertFalse(comp.isImportantMessaging(mRecordEmail));
         assertFalse(comp.isImportantMessaging(mRecordCheater));
     }
diff --git a/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java b/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
index 0c2928a9051f..eb1c9975cb7e 100644
--- a/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
+++ b/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
@@ -80,6 +80,7 @@ import android.content.pm.ApplicationInfo;
 import android.content.pm.IPackageManager;
 import android.content.pm.PackageManager;
 import android.content.pm.ParceledListSlice;
+import android.content.res.Resources;
 import android.graphics.Color;
 import android.media.AudioAttributes;
 import android.media.AudioManager;
@@ -105,6 +106,7 @@ import android.testing.TestableLooper.RunWithLooper;
 import android.util.ArrayMap;
 import android.util.AtomicFile;
 
+import com.android.internal.R;
 import com.android.internal.statusbar.NotificationVisibility;
 import com.android.server.UiServiceTestCase;
 import com.android.server.lights.Light;
@@ -160,6 +162,8 @@ public class NotificationManagerServiceTest extends UiServiceTestCase {
     @Mock
     ActivityManager mActivityManager;
     NotificationManagerService.WorkerHandler mHandler;
+    @Mock
+    Resources mResources;
 
     private NotificationChannel mTestNotificationChannel = new NotificationChannel(
             TEST_CHANNEL_ID, TEST_CHANNEL_ID, NotificationManager.IMPORTANCE_DEFAULT);
@@ -391,7 +395,7 @@ public class NotificationManagerServiceTest extends UiServiceTestCase {
     public void testCreateNotificationChannels_NullChannelThrowsException() throws Exception {
         try {
             mBinderService.createNotificationChannels(PKG,
-                    new ParceledListSlice(Arrays.asList(null)));
+                    new ParceledListSlice(Arrays.asList((Object[])null)));
             fail("Exception should be thrown immediately.");
         } catch (NullPointerException e) {
             // pass
@@ -2197,9 +2201,9 @@ public class NotificationManagerServiceTest extends UiServiceTestCase {
                 + "</notification-policy>";
         mService.readPolicyXml(
                 new BufferedInputStream(new ByteArrayInputStream(upgradeXml.getBytes())), false);
-        verify(mListeners, times(1)).readXml(any());
-        verify(mConditionProviders, times(1)).readXml(any());
-        verify(mAssistants, times(1)).readXml(any());
+        verify(mListeners, times(1)).readXml(any(), any());
+        verify(mConditionProviders, times(1)).readXml(any(), any());
+        verify(mAssistants, times(1)).readXml(any(), any());
 
         // numbers are inflated for setup
         verify(mListeners, times(1)).migrateToXml();
@@ -2216,9 +2220,9 @@ public class NotificationManagerServiceTest extends UiServiceTestCase {
                 + "</notification-policy>";
         mService.readPolicyXml(
                 new BufferedInputStream(new ByteArrayInputStream(preupgradeXml.getBytes())), false);
-        verify(mListeners, never()).readXml(any());
-        verify(mConditionProviders, never()).readXml(any());
-        verify(mAssistants, never()).readXml(any());
+        verify(mListeners, never()).readXml(any(), any());
+        verify(mConditionProviders, never()).readXml(any(), any());
+        verify(mAssistants, never()).readXml(any(), any());
 
         // numbers are inflated for setup
         verify(mListeners, times(2)).migrateToXml();
@@ -2780,4 +2784,70 @@ public class NotificationManagerServiceTest extends UiServiceTestCase {
         verify(mListeners, times(1)).notifyHiddenLocked(captor.capture());
         assertEquals(0, captor.getValue().size());
     }
+
+    @Test
+    public void testCanUseManagedServicesLowRamNoWatchNullPkg() {
+        when(mPackageManagerClient.hasSystemFeature(FEATURE_WATCH)).thenReturn(false);
+        when(mActivityManager.isLowRamDevice()).thenReturn(true);
+        when(mResources.getStringArray(R.array.config_allowedManagedServicesOnLowRamDevices))
+                .thenReturn(new String[] {"a", "b", "c"});
+        when(mContext.getResources()).thenReturn(mResources);
+
+        assertEquals(false, mService.canUseManagedServices(null));
+    }
+
+    @Test
+    public void testCanUseManagedServicesLowRamNoWatchValidPkg() {
+        when(mPackageManagerClient.hasSystemFeature(FEATURE_WATCH)).thenReturn(false);
+        when(mActivityManager.isLowRamDevice()).thenReturn(true);
+        when(mResources.getStringArray(R.array.config_allowedManagedServicesOnLowRamDevices))
+                .thenReturn(new String[] {"a", "b", "c"});
+        when(mContext.getResources()).thenReturn(mResources);
+
+        assertEquals(true, mService.canUseManagedServices("b"));
+    }
+
+    @Test
+    public void testCanUseManagedServicesLowRamNoWatchNoValidPkg() {
+        when(mPackageManagerClient.hasSystemFeature(FEATURE_WATCH)).thenReturn(false);
+        when(mActivityManager.isLowRamDevice()).thenReturn(true);
+        when(mResources.getStringArray(R.array.config_allowedManagedServicesOnLowRamDevices))
+                .thenReturn(new String[] {"a", "b", "c"});
+        when(mContext.getResources()).thenReturn(mResources);
+
+        assertEquals(false, mService.canUseManagedServices("d"));
+    }
+
+    @Test
+    public void testCanUseManagedServicesLowRamWatchNoValidPkg() {
+        when(mPackageManagerClient.hasSystemFeature(FEATURE_WATCH)).thenReturn(true);
+        when(mActivityManager.isLowRamDevice()).thenReturn(true);
+        when(mResources.getStringArray(R.array.config_allowedManagedServicesOnLowRamDevices))
+                .thenReturn(new String[] {"a", "b", "c"});
+        when(mContext.getResources()).thenReturn(mResources);
+
+        assertEquals(true, mService.canUseManagedServices("d"));
+    }
+
+    @Test
+    public void testCanUseManagedServicesNoLowRamNoWatchValidPkg() {
+        when(mPackageManagerClient.hasSystemFeature(FEATURE_WATCH)).thenReturn(false);
+        when(mActivityManager.isLowRamDevice()).thenReturn(false);
+        when(mResources.getStringArray(R.array.config_allowedManagedServicesOnLowRamDevices))
+                .thenReturn(new String[] {"a", "b", "c"});
+        when(mContext.getResources()).thenReturn(mResources);
+
+        assertEquals(true, mService.canUseManagedServices("d"));
+    }
+
+    @Test
+    public void testCanUseManagedServicesNoLowRamWatchValidPkg() {
+        when(mPackageManagerClient.hasSystemFeature(FEATURE_WATCH)).thenReturn(true);
+        when(mActivityManager.isLowRamDevice()).thenReturn(false);
+        when(mResources.getStringArray(R.array.config_allowedManagedServicesOnLowRamDevices))
+                .thenReturn(new String[] {"a", "b", "c"});
+        when(mContext.getResources()).thenReturn(mResources);
+
+        assertEquals(true, mService.canUseManagedServices("d"));
+    }
 }
diff --git a/services/tests/uiservicestests/src/com/android/server/notification/NotificationTest.java b/services/tests/uiservicestests/src/com/android/server/notification/NotificationTest.java
index 9f7205b8efc8..d846d213c5b6 100644
--- a/services/tests/uiservicestests/src/com/android/server/notification/NotificationTest.java
+++ b/services/tests/uiservicestests/src/com/android/server/notification/NotificationTest.java
@@ -25,6 +25,8 @@ import static org.junit.Assert.assertTrue;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.when;
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyInt;
 
 import android.app.ActivityManager;
 import android.app.Notification;
@@ -33,6 +35,8 @@ import android.app.PendingIntent;
 import android.app.RemoteInput;
 import android.content.Context;
 import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.Color;
 import android.graphics.drawable.Icon;
@@ -57,20 +61,29 @@ public class NotificationTest extends UiServiceTestCase {
     @Mock
     ActivityManager mAm;
 
+    @Mock
+    Resources mResources;
+
     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
     }
 
     @Test
-    public void testStripsExtendersInLowRamMode() {
+    public void testStripsExtendersInLowRamModeNoWhitelistNoTv() {
         Notification.Builder nb = new Notification.Builder(mContext, "channel");
         nb.extend(new Notification.CarExtender().setColor(Color.RED));
         nb.extend(new Notification.TvExtender().setChannelId("different channel"));
         nb.extend(new Notification.WearableExtender().setDismissalId("dismiss"));
         Notification before = nb.build();
 
-        Notification after = Notification.Builder.maybeCloneStrippedForDelivery(before, true);
+        // No whitelist
+        Context context = spy(getContext());
+        when(context.getResources()).thenReturn(mResources);
+        when(mResources.getStringArray(anyInt())).thenReturn(new String[0]);
+
+        Notification after = Notification.Builder.maybeCloneStrippedForDelivery(before, true,
+                context);
 
         assertEquals("different channel", new Notification.TvExtender(before).getChannelId());
         assertNull(new Notification.TvExtender(after).getChannelId());
@@ -83,8 +96,34 @@ public class NotificationTest extends UiServiceTestCase {
     }
 
     @Test
+    public void testStripsExtendersInLowRamModeHasWhitelist() {
+        Notification.Builder nb = new Notification.Builder(mContext, "channel");
+        nb.extend(new Notification.CarExtender().setColor(Color.RED));
+        nb.extend(new Notification.TvExtender().setChannelId("different channel"));
+        nb.extend(new Notification.WearableExtender().setDismissalId("dismiss"));
+        Notification before = nb.build();
+
+        // Has whitelist
+        Context context = spy(mContext);
+        when(context.getResources()).thenReturn(mResources);
+        when(mResources.getStringArray(anyInt())).thenReturn(new String[1]);
+
+        Notification after = Notification.Builder.maybeCloneStrippedForDelivery(before, true,
+                context);
+
+        assertEquals("different channel", new Notification.TvExtender(before).getChannelId());
+        assertEquals("different channel", new Notification.TvExtender(after).getChannelId());
+
+        assertEquals(Color.RED, new Notification.CarExtender(before).getColor());
+        assertEquals(Color.RED, new Notification.CarExtender(after).getColor());
+
+        assertEquals("dismiss", new Notification.WearableExtender(before).getDismissalId());
+        assertEquals("dismiss", new Notification.WearableExtender(after).getDismissalId());
+    }
+
+    @Test
     public void testStripsRemoteViewsInLowRamMode() {
-        Context context = spy(getContext());
+        Context context = spy(mContext);
         ApplicationInfo ai = new ApplicationInfo();
         ai.targetSdkVersion = Build.VERSION_CODES.M;
         when(context.getApplicationInfo()).thenReturn(ai);
@@ -97,7 +136,8 @@ public class NotificationTest extends UiServiceTestCase {
                 .setStyle(style)
                 .build();
 
-        Notification after = Notification.Builder.maybeCloneStrippedForDelivery(before, true);
+        Notification after = Notification.Builder.maybeCloneStrippedForDelivery(before, true,
+                mContext);
         assertNotNull(before.contentView);
         assertNotNull(before.bigContentView);
         assertNotNull(before.headsUpContentView);
@@ -113,7 +153,8 @@ public class NotificationTest extends UiServiceTestCase {
         nb.extend(new Notification.TvExtender().setChannelId("different channel"));
         nb.extend(new Notification.WearableExtender().setDismissalId("dismiss"));
         Notification before = nb.build();
-        Notification after = Notification.Builder.maybeCloneStrippedForDelivery(before, false);
+        Notification after = Notification.Builder.maybeCloneStrippedForDelivery(before, false,
+                mContext);
 
         assertTrue(before == after);