Add base preference controller for new Bluetooth developer option

Bug: 142227996
Test: make -j50 RunSettingsRoboTests
Change-Id: I9d10019228bc575f4ac38494e4dd27d672d5da6d

src/com/android/settings/development/bluetooth/AbstractBluetoothPreferenceController.java

@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2019 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.development.bluetooth;
+
+import android.bluetooth.BluetoothA2dp;
+import android.content.Context;
+
+import com.android.settings.development.BluetoothA2dpConfigStore;
+import com.android.settings.development.BluetoothServiceConnectionListener;
+import com.android.settingslib.core.lifecycle.Lifecycle;
+import com.android.settingslib.core.lifecycle.LifecycleObserver;
+import com.android.settingslib.core.lifecycle.events.OnDestroy;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+/**
+ * Abstract class for Bluetooth A2DP config controller in developer option.
+ */
+public abstract class AbstractBluetoothPreferenceController extends
+        DeveloperOptionsPreferenceController implements BluetoothServiceConnectionListener,
+        LifecycleObserver, OnDestroy {
+
+    protected final BluetoothA2dpConfigStore mBluetoothA2dpConfigStore;
+    protected volatile BluetoothA2dp mBluetoothA2dp;
+
+    public AbstractBluetoothPreferenceController(Context context, Lifecycle lifecycle,
+                                                 BluetoothA2dpConfigStore store) {
+        super(context);
+        mBluetoothA2dpConfigStore = store;
+        if (lifecycle != null) {
+            lifecycle.addObserver(this);
+        }
+    }
+
+    @Override
+    public void onBluetoothServiceConnected(BluetoothA2dp bluetoothA2dp) {
+        mBluetoothA2dp = bluetoothA2dp;
+        updateState(mPreference);
+    }
+
+    @Override
+    public void onBluetoothCodecUpdated() {
+        updateState(mPreference);
+    }
+
+    @Override
+    public void onBluetoothServiceDisconnected() {
+        mBluetoothA2dp = null;
+        updateState(mPreference);
+    }
+
+    @Override
+    public void onDestroy() {
+        mBluetoothA2dp = null;
+    }
+
+    /**
+     * Callback interface for this class to manipulate data from controller.
+     */
+    public interface Callback {
+        /**
+         * Callback method to notify preferences when the Bluetooth A2DP config is changed.
+         */
+        void onBluetoothCodecChanged();
+
+        /**
+         * Callback method to notify preferences when the HD audio(optional codec) state is changed.
+         *
+         * @param enabled Is {@code true} when the setting is enabled.
+         */
+        void onBluetoothHDAudioEnabled(boolean enabled);
+    }
+}

tests/robotests/src/com/android/settings/development/bluetooth/AbstractBluetoothPreferenceControllerTest.java

@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2019 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.development.bluetooth;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+
+import android.bluetooth.BluetoothA2dp;
+import android.content.Context;
+
+import androidx.lifecycle.LifecycleOwner;
+
+import com.android.settings.development.BluetoothA2dpConfigStore;
+import com.android.settingslib.core.lifecycle.Lifecycle;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class AbstractBluetoothPreferenceControllerTest {
+
+    @Mock
+    private BluetoothA2dpConfigStore mBluetoothA2dpConfigStore;
+    @Mock
+    private BluetoothA2dp mBluetoothA2dp;
+
+    private LifecycleOwner mLifecycleOwner;
+    private Lifecycle mLifecycle;
+    private Context mContext;
+    private AbstractBluetoothPreferenceController mController;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mLifecycleOwner = () -> mLifecycle;
+        mLifecycle = new Lifecycle(mLifecycleOwner);
+        mController = spy(new AbstractBluetoothPreferenceControllerImpl(mContext, mLifecycle,
+                mBluetoothA2dpConfigStore));
+    }
+
+    @Test
+    public void onBluetoothServiceConnected_checkProfile() {
+        assertThat(mController.mBluetoothA2dp).isNull();
+        mController.onBluetoothServiceConnected(mBluetoothA2dp);
+        assertThat(mController.mBluetoothA2dp).isEqualTo(mBluetoothA2dp);
+    }
+
+    @Test
+    public void onBluetoothServiceConnected_updateState() {
+        mController.onBluetoothServiceConnected(mBluetoothA2dp);
+        verify(mController).updateState(any());
+    }
+
+    @Test
+    public void onBluetoothCodecUpdated_updateState() {
+        mController.onBluetoothCodecUpdated();
+        verify(mController).updateState(any());
+    }
+
+    @Test
+    public void onBluetoothServiceDisconnected_clearA2dpProfile() {
+        mController.onBluetoothServiceConnected(mBluetoothA2dp);
+        assertThat(mController.mBluetoothA2dp).isEqualTo(mBluetoothA2dp);
+        mController.onBluetoothServiceDisconnected();
+        assertThat(mController.mBluetoothA2dp).isNull();
+    }
+
+    @Test
+    public void onDestroy_clearA2dpProfile() {
+        mController.onBluetoothServiceConnected(mBluetoothA2dp);
+        assertThat(mController.mBluetoothA2dp).isEqualTo(mBluetoothA2dp);
+        mController.onDestroy();
+        assertThat(mController.mBluetoothA2dp).isNull();
+    }
+
+    private static class AbstractBluetoothPreferenceControllerImpl extends
+            AbstractBluetoothPreferenceController {
+
+        private AbstractBluetoothPreferenceControllerImpl(Context context, Lifecycle lifecycle,
+                BluetoothA2dpConfigStore store) {
+            super(context, lifecycle, store);
+        }
+
+        @Override
+        public String getPreferenceKey() {
+            return null;
+        }
+    }
+}