MAP: Add developer option to control map version

Bug: 146916756
Test: manual
Change-Id: If32db03072e02b7b2477c7da943b6b0e6a9be260

res/xml/development_settings.xml

@@ -303,6 +303,13 @@
             android:entries="@array/bluetooth_avrcp_versions"
             android:entryValues="@array/bluetooth_avrcp_version_values" />
 
+        <ListPreference
+            android:key="bluetooth_select_map_version"
+            android:title="@string/bluetooth_select_map_version_string"
+            android:dialogTitle="@string/bluetooth_select_map_version_dialog_title"
+            android:entries="@array/bluetooth_map_versions"
+            android:entryValues="@array/bluetooth_map_version_values" />
+
         <SwitchPreference
             android:key="bluetooth_hd_audio_settings"
             android:title="@string/bluetooth_profile_a2dp_high_quality_unknown_codec"/>

src/com/android/settings/development/BluetoothMapVersionPreferenceController.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2020 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 android.content.Context;
+import android.os.SystemProperties;
+import android.text.TextUtils;
+
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.ListPreference;
+import androidx.preference.Preference;
+
+import com.android.settings.R;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+/**
+ * Preference controller to control Bluetooth MAP version
+ */
+public class BluetoothMapVersionPreferenceController extends DeveloperOptionsPreferenceController
+        implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {
+
+    private static final String BLUETOOTH_SELECT_MAP_VERSION_KEY =
+            "bluetooth_select_map_version";
+
+    @VisibleForTesting
+    static final String BLUETOOTH_MAP_VERSION_PROPERTY = "persist.bluetooth.mapversion";
+
+    private final String[] mListValues;
+    private final String[] mListSummaries;
+
+    public BluetoothMapVersionPreferenceController(Context context) {
+        super(context);
+
+        mListValues = context.getResources().getStringArray(R.array.bluetooth_map_version_values);
+        mListSummaries = context.getResources().getStringArray(R.array.bluetooth_map_versions);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return BLUETOOTH_SELECT_MAP_VERSION_KEY;
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        SystemProperties.set(BLUETOOTH_MAP_VERSION_PROPERTY, newValue.toString());
+        updateState(mPreference);
+        return true;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        final ListPreference listPreference = (ListPreference) preference;
+        final String currentValue = SystemProperties.get(BLUETOOTH_MAP_VERSION_PROPERTY);
+        int index = 0; // Defaults to MAP 1.2
+        for (int i = 0; i < mListValues.length; i++) {
+            if (TextUtils.equals(currentValue, mListValues[i])) {
+                index = i;
+                break;
+            }
+        }
+        listPreference.setValue(mListValues[index]);
+        listPreference.setSummary(mListSummaries[index]);
+    }
+}

src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java

@@ -465,6 +465,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         controllers.add(new BluetoothAbsoluteVolumePreferenceController(context));
         controllers.add(new BluetoothGabeldorschePreferenceController(context));
         controllers.add(new BluetoothAvrcpVersionPreferenceController(context));
+        controllers.add(new BluetoothMapVersionPreferenceController(context));
         controllers.add(new BluetoothA2dpHwOffloadPreferenceController(context, fragment));
         controllers.add(new BluetoothMaxConnectedAudioDevicesPreferenceController(context));
         controllers.add(new ShowTapsPreferenceController(context));

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

@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2020 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.BluetoothMapVersionPreferenceController
+        .BLUETOOTH_MAP_VERSION_PROPERTY;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.os.SystemProperties;
+
+import androidx.preference.ListPreference;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.R;
+
+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 BluetoothMapVersionPreferenceControllerTest {
+    @Mock
+    private ListPreference mPreference;
+    @Mock
+    private PreferenceScreen mPreferenceScreen;
+    private Context mContext;
+    private BluetoothMapVersionPreferenceController mController;
+    /**
+     * 0: MAP 1.2 (Default)
+     * 1: MAP 1.3
+     * 2: MAP 1.4
+     */
+    private String[] mListValues;
+    private String[] mListSummaries;
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        final Resources resources = mContext.getResources();
+        mListValues = resources.getStringArray(R.array.bluetooth_map_version_values);
+        mListSummaries = resources.getStringArray(R.array.bluetooth_map_versions);
+        mController = new BluetoothMapVersionPreferenceController(mContext);
+        when(mPreferenceScreen.findPreference(mController.getPreferenceKey()))
+            .thenReturn(mPreference);
+        mController.displayPreference(mPreferenceScreen);
+    }
+    @Test
+    public void onPreferenceChange_setMap13_shouldEnableMap13() {
+        mController.onPreferenceChange(mPreference, mListValues[1]);
+
+        final String currentValue = SystemProperties.get(BLUETOOTH_MAP_VERSION_PROPERTY);
+        assertThat(currentValue).isEqualTo(mListValues[1]);
+    }
+    @Test
+    public void onPreferenceChange_setMap14_shouldEnableMap14() {
+        mController.onPreferenceChange(mPreference, mListValues[2]);
+
+        final String currentValue = SystemProperties.get(BLUETOOTH_MAP_VERSION_PROPERTY);
+        assertThat(currentValue).isEqualTo(mListValues[2]);
+    }
+    @Test
+    public void updateState_setMap13_shouldSetPreferenceToMap13() {
+        SystemProperties.set(BLUETOOTH_MAP_VERSION_PROPERTY, mListValues[1]);
+
+        mController.updateState(mPreference);
+
+        verify(mPreference).setValue(mListValues[1]);
+        verify(mPreference).setSummary(mListSummaries[1]);
+    }
+    @Test
+    public void updateState_setMap14_shouldSetPreferenceToMap14() {
+        SystemProperties.set(BLUETOOTH_MAP_VERSION_PROPERTY, mListValues[2]);
+
+        mController.updateState(mPreference);
+
+        verify(mPreference).setValue(mListValues[2]);
+        verify(mPreference).setSummary(mListSummaries[2]);
+    }
+    @Test
+    public void updateState_noValueSet_shouldSetDefaultToMap12() {
+        mController.updateState(mPreference);
+
+        verify(mPreference).setValue(mListValues[0]);
+        verify(mPreference).setSummary(mListSummaries[0]);
+    }
+}