Reland add FeatureProvider for SyncAcrossDevices Settings integration.

Prior CL ag/26930404 was reverted because an unused class was
trimmed in AOSP, causing test cases to throw NoClassDefFoundError
exceptions. This CL combines ag/26930404 and ag/26995936 to address
the failure.

Bug: 330498032
Test: atest FakeFeatureFactory, atest SyncAcrossDevicesPreferenceControllerTest
Change-Id: I0a7ebccdebcad20e06d7542d7c4a0005885f393b

tests/robotests/src/com/android/settings/notification/syncacrossdevices/SyncAcrossDevicesPreferenceControllerTest.java

@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2024 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.notification.syncacrossdevices;
+
+import static com.android.settings.core.BasePreferenceController.AVAILABLE;
+import static com.android.settings.core.BasePreferenceController.UNSUPPORTED_ON_DEVICE;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+import android.content.Context;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceCategory;
+import androidx.preference.PreferenceGroup;
+import androidx.preference.PreferenceManager;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.testutils.FakeFeatureFactory;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class SyncAcrossDevicesPreferenceControllerTest {
+
+    @Rule public final MockitoRule mMockitoRule = MockitoJUnit.rule();
+
+    @Mock private SyncAcrossDevicesFeatureUpdater mSyncAcrossDevicesFeatureUpdater;
+    @Mock private PreferenceManager mPreferenceManager;
+
+    private static final String PREFERENCE_KEY = "preference_key";
+
+    private Context mContext;
+    private SyncAcrossDevicesPreferenceController mSyncAcrossDevicesPreferenceController;
+    private PreferenceGroup mPreferenceGroup;
+
+    @Before
+    public void setUp() {
+        mContext = spy(RuntimeEnvironment.application);
+        SyncAcrossDevicesFeatureProvider provider =
+                FakeFeatureFactory.setupForTest().getSyncAcrossDevicesFeatureProvider();
+        doReturn(mSyncAcrossDevicesFeatureUpdater)
+                .when(provider)
+                .getSyncAcrossDevicesFeatureUpdater(any(), any());
+
+        mSyncAcrossDevicesPreferenceController =
+                new SyncAcrossDevicesPreferenceController(mContext, PREFERENCE_KEY);
+
+        mPreferenceGroup = spy(new PreferenceCategory(mContext));
+        doReturn(mPreferenceManager).when(mPreferenceGroup).getPreferenceManager();
+        mPreferenceGroup.setVisible(false);
+
+        mPreferenceGroup.setKey(mSyncAcrossDevicesPreferenceController.getPreferenceKey());
+        mSyncAcrossDevicesPreferenceController.setPreferenceGroup(mPreferenceGroup);
+    }
+
+    @Test
+    public void testGetAvailabilityStatus_noFeatureUpdater_returnUnSupported() {
+        SyncAcrossDevicesFeatureProvider provider =
+                FakeFeatureFactory.setupForTest().getSyncAcrossDevicesFeatureProvider();
+        doReturn(null).when(provider).getSyncAcrossDevicesFeatureUpdater(any(), any());
+
+        SyncAcrossDevicesPreferenceController syncAcrossDevicesPreferenceController =
+                new SyncAcrossDevicesPreferenceController(mContext, PREFERENCE_KEY);
+
+        assertThat(syncAcrossDevicesPreferenceController.getAvailabilityStatus())
+                .isEqualTo(UNSUPPORTED_ON_DEVICE);
+    }
+
+    @Test
+    public void testGetAvailabilityStatus_withFeatureUpdater_returnSupported() {
+        assertThat(mSyncAcrossDevicesPreferenceController.getAvailabilityStatus())
+                .isEqualTo(AVAILABLE);
+    }
+
+    @Test
+    public void testUpdatePreferenceVisibility_addFeaturePreference_shouldShowPreference() {
+        Preference preference = new Preference(mContext);
+
+        mSyncAcrossDevicesPreferenceController.onFeatureAdded(preference);
+
+        assertThat(mPreferenceGroup.isVisible()).isTrue();
+    }
+
+    @Test
+    public void testUpdatePreferenceVisibility_removeFeaturePreference_shouldHidePreference() {
+        Preference preference = new Preference(mContext);
+
+        mSyncAcrossDevicesPreferenceController.onFeatureAdded(preference);
+        mSyncAcrossDevicesPreferenceController.onFeatureRemoved(preference);
+
+        assertThat(mPreferenceGroup.isVisible()).isFalse();
+    }
+
+    @Test
+    public void testDisplayPreference_availabilityStatusIsAvailable_shouldForceUpdated() {
+        PreferenceManager preferenceManager = new PreferenceManager(mContext);
+        PreferenceScreen preferenceScreen = preferenceManager.createPreferenceScreen(mContext);
+        preferenceScreen.addPreference(mPreferenceGroup);
+
+        mSyncAcrossDevicesPreferenceController.displayPreference(preferenceScreen);
+
+        verify(mSyncAcrossDevicesFeatureUpdater, times(1)).setPreferenceContext(any());
+        verify(mSyncAcrossDevicesFeatureUpdater, times(1)).forceUpdate();
+    }
+}