[Pair hearing devices] Add pair hearing device functionality

* Add setFilter(List<ScanFilter>) in DeviceListPreferenceFragment to enable BluetoothLeScanner

Bug: 237625815
Test: make RunSettingsRoboTests ROBOTEST_FILTER=DeviceListPreferenceFragmentTest
Test: make RunSettingsRoboTests ROBOTEST_FILTER=HearingDevicePairingDetailTest
Change-Id: I13495cad7260789845fad9a7e77e96b692a5cbd0

tests/robotests/src/com/android/settings/accessibility/HearingDevicePairingDetailTest.java

@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2023 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.accessibility;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+import android.content.Context;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.settings.bluetooth.BluetoothProgressCategory;
+import com.android.settings.testutils.shadow.ShadowBluetoothAdapter;
+import com.android.settingslib.bluetooth.CachedBluetoothDevice;
+
+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.annotation.Config;
+import org.robolectric.shadow.api.Shadow;
+
+/** Tests for {@link HearingDevicePairingDetail}. */
+@RunWith(RobolectricTestRunner.class)
+@Config(shadows = {ShadowBluetoothAdapter.class})
+public class HearingDevicePairingDetailTest {
+
+    @Rule
+    public final MockitoRule mockito = MockitoJUnit.rule();
+
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+
+    @Mock
+    private CachedBluetoothDevice mCachedBluetoothDevice;
+    private BluetoothProgressCategory mProgressCategory;
+    private TestHearingDevicePairingDetail mFragment;
+
+    @Before
+    public void setUp() {
+        final BluetoothAdapter bluetoothAdapter = spy(BluetoothAdapter.getDefaultAdapter());
+        final ShadowBluetoothAdapter shadowBluetoothAdapter = Shadow.extract(
+                BluetoothAdapter.getDefaultAdapter());
+        shadowBluetoothAdapter.setEnabled(true);
+
+        mProgressCategory = spy(new BluetoothProgressCategory(mContext));
+        mFragment = spy(new TestHearingDevicePairingDetail());
+        when(mFragment.getContext()).thenReturn(mContext);
+        when(mFragment.findPreference(
+                HearingDevicePairingDetail.KEY_AVAILABLE_HEARING_DEVICES)).thenReturn(
+                mProgressCategory);
+        mFragment.setBluetoothAdapter(bluetoothAdapter);
+
+    }
+
+    @Test
+    public void getDeviceListKey_expectedKey() {
+        assertThat(mFragment.getDeviceListKey()).isEqualTo(
+                HearingDevicePairingDetail.KEY_AVAILABLE_HEARING_DEVICES);
+    }
+
+    @Test
+    public void onDeviceBondStateChanged_bondNone_setProgressFalse() {
+        mFragment.initPreferencesFromPreferenceScreen();
+
+        mFragment.onDeviceBondStateChanged(mCachedBluetoothDevice, BluetoothDevice.BOND_NONE);
+
+        verify(mProgressCategory).setProgress(true);
+    }
+
+    @Test
+    public void onDeviceBondStateChanged_bonding_setProgressTrue() {
+        mFragment.initPreferencesFromPreferenceScreen();
+
+        mFragment.onDeviceBondStateChanged(mCachedBluetoothDevice, BluetoothDevice.BOND_BONDING);
+
+        verify(mProgressCategory).setProgress(false);
+    }
+
+    private static class TestHearingDevicePairingDetail extends HearingDevicePairingDetail {
+        TestHearingDevicePairingDetail() {
+            super();
+        }
+
+        public void setBluetoothAdapter(BluetoothAdapter bluetoothAdapter) {
+            this.mBluetoothAdapter = bluetoothAdapter;
+        }
+
+        public void enableScanning() {
+            super.enableScanning();
+        }
+    }
+}

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

@@ -26,6 +26,11 @@ import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 
 import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothUuid;
+import android.bluetooth.le.BluetoothLeScanner;
+import android.bluetooth.le.ScanCallback;
+import android.bluetooth.le.ScanFilter;
+import android.bluetooth.le.ScanSettings;
 import android.content.Context;
 import android.content.res.Resources;
 
@@ -45,6 +50,7 @@ import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
 import org.robolectric.annotation.Config;
 
+import java.util.Collections;
 import java.util.List;
 
 @RunWith(RobolectricTestRunner.class)
@@ -57,10 +63,14 @@ public class DeviceListPreferenceFragmentTest {
     private Resources mResource;
     @Mock
     private Context mContext;
+    @Mock
+    private BluetoothLeScanner mBluetoothLeScanner;
 
     private TestFragment mFragment;
     private Preference mMyDevicePreference;
 
+
+    private BluetoothAdapter mBluetoothAdapter;
     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
@@ -68,7 +78,8 @@ public class DeviceListPreferenceFragmentTest {
         mFragment = spy(new TestFragment());
         doReturn(mContext).when(mFragment).getContext();
         doReturn(mResource).when(mFragment).getResources();
-        mFragment.mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
+        mBluetoothAdapter = spy(BluetoothAdapter.getDefaultAdapter());
+        mFragment.mBluetoothAdapter = mBluetoothAdapter;
 
         mMyDevicePreference = new Preference(RuntimeEnvironment.application);
     }
@@ -169,6 +180,20 @@ public class DeviceListPreferenceFragmentTest {
         verify(mFragment, times(1)).startScanning();
     }
 
+    @Test
+    public void startScanning_setLeScanFilter_shouldStartLeScan() {
+        final ScanFilter leScanFilter = new ScanFilter.Builder()
+                .setServiceData(BluetoothUuid.HEARING_AID, new byte[]{0}, new byte[]{0})
+                .build();
+        doReturn(mBluetoothLeScanner).when(mBluetoothAdapter).getBluetoothLeScanner();
+
+        mFragment.setFilter(Collections.singletonList(leScanFilter));
+        mFragment.startScanning();
+
+        verify(mBluetoothLeScanner).startScan(eq(Collections.singletonList(leScanFilter)),
+                any(ScanSettings.class), any(ScanCallback.class));
+    }
+
     /**
      * Fragment to test since {@code DeviceListPreferenceFragment} is abstract
      */
@@ -187,7 +212,7 @@ public class DeviceListPreferenceFragmentTest {
         public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) {}
 
         @Override
-        void initPreferencesFromPreferenceScreen() {}
+        protected void initPreferencesFromPreferenceScreen() {}
 
         @Override
         public String getDeviceListKey() {