Introduce BluetoothAudioSampleRatePreferenceCtrl

- Create new BluetoothAudioSampleRatePreferenceController
 - Create controller inside the DashboardFragment
 - Port logic from DevelopmentSettings into the controller

Bug: 34203528
Test: make RunSettingsRoboTests -j40
Change-Id: I1cb1f431a94a8665c8b0f11f3d981e58bf733851

tests/robotests/src/android/bluetooth/BluetoothCodecConfig.java

@@ -20,4 +20,15 @@ package android.bluetooth;
  * A placeholder class to prevent ClassNotFound exceptions caused by lack of visibility.
  */
 public class BluetoothCodecConfig {
+
+    public static final int SAMPLE_RATE_NONE = 0;
+    public static final int SAMPLE_RATE_48000 = 0x1 << 1;
+    public static final int SOURCE_CODEC_TYPE_INVALID = 1000 * 1000;
+    public static final int CODEC_PRIORITY_DEFAULT = 0;
+    public static final int BITS_PER_SAMPLE_NONE = 0;
+    public static final int CHANNEL_MODE_NONE = 0;
+
+    public int getSampleRate() {
+        return 0;
+    }
 }

tests/robotests/src/com/android/settings/development/BluetoothAudioSampleRatePreferenceControllerTest.java

@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2017 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;
+
+import static com.android.settings.development.BluetoothAudioSampleRatePreferenceController
+        .STREAMING_LABEL_ID;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.ArgumentMatchers.anyLong;
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.bluetooth.BluetoothA2dp;
+import android.bluetooth.BluetoothCodecConfig;
+import android.content.Context;
+import android.support.v7.preference.ListPreference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settingslib.core.lifecycle.Lifecycle;
+
+import org.junit.After;
+import org.junit.Before;
+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;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class BluetoothAudioSampleRatePreferenceControllerTest {
+
+    @Mock
+    private BluetoothA2dp mBluetoothA2dp;
+    @Mock
+    private BluetoothCodecConfig mBluetoothCodecConfig;
+    @Mock
+    private ListPreference mPreference;
+    @Mock
+    private PreferenceScreen mScreen;
+
+    /**
+     * 0: Use System Selection (Default)
+     * 1: 44.1 kHz
+     * 2: 48.0 kHz
+     * 3: 88.2 kHz
+     * 4: 96.0 kHz
+     */
+    private String[] mListValues;
+    private String[] mListSummaries;
+    private Lifecycle mLifecycle;
+    private Context mContext;
+    private BluetoothAudioSampleRatePreferenceController mController;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mLifecycle = new Lifecycle();
+        mController = spy(new BluetoothAudioSampleRatePreferenceController(mContext, mLifecycle,
+                new Object()));
+        doReturn(mBluetoothCodecConfig).when(mController).getCodecConfig();
+        doNothing().when(mController).setCodecConfigPreference(any());
+        doReturn(mBluetoothCodecConfig).when(mController).createCodecConfig(anyInt(), anyInt(),
+                anyInt(), anyInt(), anyInt(), anyLong(), anyLong(), anyLong(), anyLong());
+        mListValues = mContext.getResources().getStringArray(
+                R.array.bluetooth_a2dp_codec_sample_rate_values);
+        mListSummaries = mContext.getResources().getStringArray(
+                R.array.bluetooth_a2dp_codec_sample_rate_summaries);
+        when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
+        mController.displayPreference(mScreen);
+    }
+
+    @Test
+    public void updateState_nothingSet_shouldUpdateToDefault() {
+        mController.updateState(mPreference);
+
+        verify(mPreference).setValue(mListValues[0]);
+        verify(mPreference).setSummary(
+                mContext.getResources().getString(STREAMING_LABEL_ID, mListSummaries[0]));
+    }
+
+    @Test
+    public void updateState_option2Set_shouldUpdateToOption2() {
+        when(mBluetoothCodecConfig.getSampleRate()).thenReturn(
+                BluetoothCodecConfig.SAMPLE_RATE_48000);
+
+        mController.updateState(mPreference);
+
+        verify(mPreference).setValue(mListValues[2]);
+        verify(mPreference).setSummary(
+                mContext.getResources().getString(STREAMING_LABEL_ID, mListSummaries[2]));
+        assertThat(BluetoothA2dpSharedStore.getSampleRate()).isEqualTo(
+                BluetoothCodecConfig.SAMPLE_RATE_48000);
+    }
+
+    @Test
+    public void onPreferenceChange_bluetoothConnected_shouldUpdateCodec() {
+        mController.onBluetoothServiceConnected(mBluetoothA2dp);
+
+        mController.onPreferenceChange(mPreference, "" /* new value */);
+
+        verify(mController).setCodecConfigPreference(any());
+    }
+
+    @Test
+    public void onPreferenceChange_bluetoothNotConnected_shouldUpdateCodec() {
+        mController.onBluetoothServiceDisconnected();
+
+        mController.onPreferenceChange(mPreference, "" /* new value */);
+
+        verify(mController, never()).setCodecConfigPreference(any());
+    }
+
+    @Test
+    public void onBluetoothServiceConnected_shouldUpdateState() {
+        mController.onBluetoothServiceConnected(mBluetoothA2dp);
+
+        verify(mController).updateState(mPreference);
+    }
+
+    @Test
+    public void onBluetoothCodecUpdated_shouldUpdateState() {
+        mController.onBluetoothCodecUpdated();
+
+        verify(mController).updateState(mPreference);
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchEnabled_shouldEnablePreference() {
+        mController.onDeveloperOptionsSwitchEnabled();
+
+        verify(mPreference).setEnabled(true);
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchDisabled_shouldDisablePreference() {
+        mController.onDeveloperOptionsSwitchDisabled();
+
+        verify(mPreference).setEnabled(false);
+    }
+
+}