Check whether support telephony for hearing device call routing

Root Cause: Tablet might not support Call

Solution: Check isVoiceCapable() first

Fix: 270472166
Test: make RunSettingsRoboTests ROBOTEST_FILTER=HearingDeviceCallRoutingPreferenceControllerTest
Change-Id: Icf69d286f63a737941447a6c16a08b4bb8c1fe23

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

@@ -19,6 +19,7 @@ package com.android.settings.bluetooth;
 import android.content.Context;
 import android.provider.Settings;
 
+import com.android.settings.Utils;
 import com.android.settingslib.bluetooth.CachedBluetoothDevice;
 import com.android.settingslib.bluetooth.HearingAidAudioRoutingConstants;
 
@@ -43,6 +44,11 @@ public class HearingDeviceCallRoutingPreferenceController extends
         mHearingDevice = cachedBluetoothDevice;
     }
 
+    @Override
+    public int getAvailabilityStatus() {
+        return Utils.isVoiceCapable(mContext) ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+
     @Override
     protected int[] getSupportedAttributeList() {
         return HearingAidAudioRoutingConstants.CALL_ROUTING_ATTRIBUTES;

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

@@ -0,0 +1,76 @@
+/*
+ * 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.bluetooth;
+
+import static com.android.settings.core.BasePreferenceController.AVAILABLE;
+import static com.android.settings.core.BasePreferenceController.UNSUPPORTED_ON_DEVICE;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.telephony.TelephonyManager;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.Spy;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+import org.robolectric.RobolectricTestRunner;
+
+/** Tests for {@link HearingDeviceCallRoutingPreferenceController}. */
+@RunWith(RobolectricTestRunner.class)
+public class HearingDeviceCallRoutingPreferenceControllerTest {
+
+    @Rule
+    public MockitoRule mMockitoRule = MockitoJUnit.rule();
+
+    @Spy
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+    private static final String FAKE_KEY = "fake_key";
+
+    @Mock
+    private TelephonyManager mTelephonyManager;
+    private HearingDeviceCallRoutingPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        when(mContext.getSystemService(Context.TELEPHONY_SERVICE)).thenReturn(mTelephonyManager);
+        mController = new HearingDeviceCallRoutingPreferenceController(mContext, FAKE_KEY);
+    }
+
+    @Test
+    public void getAvailabilityStatus_hasTelephonyCalling_available() {
+        when(mTelephonyManager.isVoiceCapable()).thenReturn(true);
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(AVAILABLE);
+    }
+
+    @Test
+    public void getAvailabilityStatus_noTelephonyCalling_unsupported() {
+        when(mTelephonyManager.isVoiceCapable()).thenReturn(false);
+
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(UNSUPPORTED_ON_DEVICE);
+    }
+}