Disable AssistGestureSetting search if not supported

Change-Id: Id5f79506635592d98783b2b99b7ee09dd223c43c
Fixes: 64066820
Test: robotests

res/xml/assist_gesture_settings.xml

@@ -15,9 +15,10 @@
   limitations under the License.
   -->
 
-<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+<PreferenceScreen
+    xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-                  xmlns:settings="http://schemas.android.com/apk/res/com.android.settings"
+    android:key="gesture_assist_settings_page"
     android:title="@string/assist_gesture_title">
 
     <com.android.settings.widget.VideoPreference

src/com/android/settings/gestures/AssistGestureSettings.java

@@ -79,9 +79,17 @@ public class AssistGestureSettings extends DashboardFragment {
                 }
 
                 @Override
-                public List<AbstractPreferenceController> getPreferenceControllers(Context context) {
+                public List<AbstractPreferenceController> getPreferenceControllers(
+                        Context context) {
                     return buildPreferenceControllers(context, null /* lifecycle */);
                 }
+
+                @Override
+                protected boolean isPageSearchEnabled(Context context) {
+                    return new AssistGesturePreferenceController(context, null /* lifecycle */,
+                            null /* key */, false /* assistOnly */)
+                            .isAvailable();
+                }
             };
 }
 

tests/robotests/src/com/android/settings/gestures/AssistGestureSettingsTest.java

@@ -17,7 +17,7 @@
 package com.android.settings.gestures;
 
 import static com.google.common.truth.Truth.assertThat;
-
+import static org.mockito.Matchers.any;
 import static org.mockito.Mockito.when;
 
 import android.content.Context;
@@ -34,6 +34,7 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
 import org.robolectric.annotation.Config;
 import org.robolectric.shadows.ShadowApplication;
 
@@ -45,14 +46,12 @@ public class AssistGestureSettingsTest {
     @Mock
     private Context mContext;
     private FakeFeatureFactory mFakeFeatureFactory;
-    private AssistGestureFeatureProvider mFeatureProvider;
     private AssistGestureSettings mSettings;
 
     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
         mFakeFeatureFactory = (FakeFeatureFactory) FakeFeatureFactory.getFactory(mContext);
-        mFeatureProvider = mFakeFeatureFactory.getAssistGestureFeatureProvider();
         mSettings = new AssistGestureSettings();
     }
 
@@ -79,5 +78,15 @@ public class AssistGestureSettingsTest {
         assertThat(indexRes).isNotNull();
         assertThat(indexRes.get(0).xmlResId).isEqualTo(mSettings.getPreferenceScreenResId());
     }
+
+    @Test
+    public void testSearchIndexProvider_noSensor_shouldDisablePageSearch() {
+        when(mFakeFeatureFactory.assistGestureFeatureProvider.isSensorAvailable(any(Context.class)))
+                .thenReturn(false);
+
+        assertThat(AssistGestureSettings.SEARCH_INDEX_DATA_PROVIDER.getNonIndexableKeys(
+                RuntimeEnvironment.application))
+                .contains("gesture_assist_settings_page");
+    }
 }