Expose mac address in bluetooth main page

This mac address means the owned device, not the device
to connect.

Bug: 35875420
Test: RunSettingsRoboTests
Change-Id: I142f49fdca72d8ffbb9b8b2e2666a61aefb80505

res/values/strings.xml

@@ -246,6 +246,8 @@
 
     <!-- Bluetooth Visibility message.  This message informs the user that their device is now visible to other bluetooth devices.  [CHAR LIMIT=NONE] -->
     <string name="bluetooth_is_visible_message"><xliff:g id="device_name">%1$s</xliff:g> is visible to nearby devices while Bluetooth settings is open.</string>
+    <!-- Bluetooth mac address message.  This message shows the bluetooth mac address for this device.  [CHAR LIMIT=120] -->
+    <string name="bluetooth_footer_mac_message">Bluetooth MAC address: <xliff:g id="bluetooth_mac_address">%1$s</xliff:g></string>
     <!-- Bluetooth Visibility discoonect question.  Asks the user if they wish to disconnect a paired bluetooth device.  [CHAR LIMIT=50] -->
     <string name="bluetooth_is_disconnect_question">Disconnect <xliff:g id="device_name">%1$s</xliff:g>?</string>
     <!-- Bluetooth broadcasting settings, option to enable/disable broadcasting -->

src/com/android/settings/bluetooth/BluetoothSettings.java

@@ -28,6 +28,7 @@ import android.content.res.Resources;
 import android.os.Bundle;
 import android.provider.Settings;
 import android.support.annotation.VisibleForTesting;
+import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceCategory;
 import android.support.v7.preference.PreferenceGroup;
 import android.support.v7.preference.PreferenceScreen;
@@ -57,6 +58,7 @@ import com.android.settings.widget.SwitchBar;
 import com.android.settings.widget.SwitchBarController;
 import com.android.settingslib.bluetooth.BluetoothDeviceFilter;
 import com.android.settingslib.bluetooth.CachedBluetoothDevice;
+import com.android.settingslib.bluetooth.LocalBluetoothAdapter;
 import com.android.settingslib.bluetooth.LocalBluetoothManager;
 
 import java.util.ArrayList;
@@ -70,7 +72,7 @@ import static android.os.UserManager.DISALLOW_CONFIG_BLUETOOTH;
  * BluetoothSettings is the Settings screen for Bluetooth configuration and
  * connection management.
  */
-public final class BluetoothSettings extends DeviceListPreferenceFragment implements Indexable {
+public class BluetoothSettings extends DeviceListPreferenceFragment implements Indexable {
     private static final String TAG = "BluetoothSettings";
 
     private static final int MENU_ID_SCAN = Menu.FIRST;
@@ -361,13 +363,7 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment implem
                     startScanning();
                 }
 
-                final Resources res = getResources();
-                final Locale locale = res.getConfiguration().getLocales().get(0);
-                final BidiFormatter bidiFormatter = BidiFormatter.getInstance(locale);
-                mMyDevicePreference.setTitle(res.getString(
-                        R.string.bluetooth_is_visible_message,
-                        bidiFormatter.unicodeWrap(mLocalAdapter.getName())));
-
+                updateMyDevicePreference(mMyDevicePreference);
                 getActivity().invalidateOptionsMenu();
 
                 // mLocalAdapter.setScanMode is internally synchronized so it is okay for multiple
@@ -477,6 +473,20 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment implem
         }
     }
 
+    @VisibleForTesting
+    void updateMyDevicePreference(Preference myDevicePreference) {
+        final BidiFormatter bidiFormatter = BidiFormatter.getInstance();
+
+        myDevicePreference.setTitle(getString(
+                R.string.bluetooth_footer_mac_message,
+                bidiFormatter.unicodeWrap(mLocalAdapter.getAddress())));
+    }
+
+    @VisibleForTesting
+    void setLocalBluetoothAdapter(LocalBluetoothAdapter localAdapter) {
+        mLocalAdapter = localAdapter;
+    }
+
     private final GearPreference.OnGearClickListener mDeviceProfilesListener = pref -> {
         // User clicked on advanced options icon for a device in the list
         if (!(pref instanceof BluetoothDevicePreference)) {

tests/robotests/src/com/android/settings/bluetooth/BluetoothSettingsTest.java

@@ -16,22 +16,74 @@
 
 package com.android.settings.bluetooth;
 
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.os.UserManager;
+import android.support.v7.preference.Preference;
+
+import com.android.settings.R;
 import com.android.settings.SettingsRobolectricTestRunner;
 import com.android.settings.TestConfig;
+import com.android.settingslib.bluetooth.LocalBluetoothAdapter;
 
+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 BluetoothSettingsTest {
+    private static final String FOOTAGE_MAC_STRING = "Bluetooth mac: xxxx";
+
+    @Mock
+    private UserManager mUserManager;
+    @Mock
+    private Resources mResource;
+    @Mock
+    private Context mContext;
+    @Mock
+    private LocalBluetoothAdapter mLocalAdapter;
+    private BluetoothSettings mFragment;
+    private Preference mMyDevicePreference;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mFragment = spy(new BluetoothSettings());
+        doReturn(mContext).when(mFragment).getContext();
+        doReturn(mResource).when(mFragment).getResources();
+
+        mMyDevicePreference = new Preference(RuntimeEnvironment.application);
+
+        mFragment.setLocalBluetoothAdapter(mLocalAdapter);
+    }
 
     @Test
     public void setTextSpan_notSpannable_shouldNotCrash() {
         final String str = "test";
-        final BluetoothSettings settings = new BluetoothSettings();
-        settings.setTextSpan(str, "hello");
+        mFragment.setTextSpan(str, "hello");
+    }
+
+    @Test
+    public void setUpdateMyDevicePreference_setTitleCorrectly() {
+        doReturn(FOOTAGE_MAC_STRING).when(mFragment).getString(
+                eq(R.string.bluetooth_footer_mac_message), any());
+
+        mFragment.updateMyDevicePreference(mMyDevicePreference);
+
+        assertThat(mMyDevicePreference.getTitle()).isEqualTo(FOOTAGE_MAC_STRING);
     }
 
 }