Remove default app duplicates in search

Default Work Browser and Phone app search results look
identical to the regular defaults. Supress the results
until we differentiate work results.

"Assist and voice input" duplicate is a parent-child
duplication and is removed, as well.

Bug: 36101902
Test: make RunSettingsRoboTests
Change-Id: I3bb75c199cd76e24de42548dd166c4bccd0c7f0a

src/com/android/settings/applications/AdvancedAppSettings.java

@@ -43,6 +43,8 @@ public class AdvancedAppSettings extends DashboardFragment {
 
     static final String TAG = "AdvancedAppSettings";
 
+    private static final String KEY_ASSIST_VOICE_INPUT = "assist_and_voice_input";
+
     @Override
     protected String getLogTag() {
         return TAG;
@@ -80,6 +82,18 @@ public class AdvancedAppSettings extends DashboardFragment {
                     sir.xmlResId = R.xml.app_default_settings;
                     return Arrays.asList(sir);
                 }
+
+                @Override
+                public List<String> getNonIndexableKeys(Context context) {
+                    List<String> keys = super.getNonIndexableKeys(context);
+                    keys.add(KEY_ASSIST_VOICE_INPUT);
+                    // TODO (b/38230148) Remove these keys when we can differentiate work results
+                    keys.add((new DefaultWorkPhonePreferenceController(context))
+                            .getPreferenceKey());
+                    keys.add((new DefaultWorkBrowserPreferenceController(context))
+                            .getPreferenceKey());
+                    return keys;
+                }
             };
 
     static class SummaryProvider implements SummaryLoader.SummaryProvider {

src/com/android/settings/search/BaseSearchIndexProvider.java

@@ -72,7 +72,7 @@ public class BaseSearchIndexProvider implements Indexable.SearchIndexProvider {
             }
             return nonIndexableKeys;
         } else {
-            return EMPTY_LIST;
+            return new ArrayList<>();
         }
     }
 

tests/robotests/src/com/android/settings/applications/AdvancedAppSettingsTest.java

@@ -26,6 +26,7 @@ import com.android.settings.applications.defaultapps.DefaultBrowserPreferenceCon
 import com.android.settings.applications.defaultapps.DefaultPhonePreferenceController;
 import com.android.settings.applications.defaultapps.DefaultSmsPreferenceController;
 import com.android.settings.dashboard.SummaryLoader;
+import com.android.settings.testutils.XmlTestUtils;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -34,11 +35,14 @@ import org.robolectric.RuntimeEnvironment;
 import org.robolectric.annotation.Config;
 import org.robolectric.util.ReflectionHelpers;
 
+import java.util.List;
+
 import static com.google.common.truth.Truth.assertThat;
 import static org.mockito.Matchers.anyString;
 import static org.mockito.Matchers.eq;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
@@ -136,4 +140,16 @@ public class AdvancedAppSettingsTest {
 
     }
 
+
+    @Test
+    public void testNonIndexableKeys_existInXmlLayout() {
+        final Context context = spy(RuntimeEnvironment.application);
+        final List<String> niks = AdvancedAppSettings.SEARCH_INDEX_DATA_PROVIDER
+                .getNonIndexableKeys(context);
+        final int xmlId = (new AdvancedAppSettings()).getPreferenceScreenResId();
+
+        final List<String> keys = XmlTestUtils.getKeysFromPreferenceXml(context, xmlId);
+
+        assertThat(keys).containsAllIn(niks);
+    }
 }