Add TelephonyManager unit test
Add TelephonyManager.getEmergencyNumberList(Categories) unit test

Test: atest
Bug: 172507765
Change-Id: I41454ab781b53c0ca8e49db2007ab376be02199b
Merged-In: I41454ab781b53c0ca8e49db2007ab376be02199b
(cherry picked from commit 7cf7b296a0660c7750fc16959239a2a667e3258e)
diff --git a/tests/src/com/android/services/telephony/TelephonyManagerTest.java b/tests/src/com/android/services/telephony/TelephonyManagerTest.java
new file mode 100644
index 0000000..e9cdc98
--- /dev/null
+++ b/tests/src/com/android/services/telephony/TelephonyManagerTest.java
@@ -0,0 +1,145 @@
+/*
+ * 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.services.telephony;
+
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyManager;
+import android.telephony.emergency.EmergencyNumber;
+import android.test.mock.MockContext;
+
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.internal.telephony.ITelephony;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/** Unit tests for {@link TelephonyManager}. */
+@RunWith(AndroidJUnit4.class)
+public class TelephonyManagerTest {
+    private static final String PKG_NAME = "Unittest.TelephonyManagerTest";
+    private static final String TAG = "TelephonyManagerTest";
+
+    private ITelephony mMockITelephony;
+    private SubscriptionManager mMockSubscriptionManager;
+    private Context mMockContext;
+
+    private TelephonyManager mTelephonyManager;
+
+    private final MockContext mContext =
+            new MockContext() {
+                @Override
+                public String getOpPackageName() {
+                    return PKG_NAME;
+                }
+                @Override
+                public String getAttributionTag() {
+                    return TAG;
+                }
+                @Override
+                public Context getApplicationContext() {
+                    return null;
+                }
+                @Override
+                public Object getSystemService(String name) {
+                    switch (name) {
+                        case (Context.TELEPHONY_SUBSCRIPTION_SERVICE) : {
+                            return mMockSubscriptionManager;
+                        }
+                    }
+                    return null;
+                }
+            };
+
+    @Before
+    public void setUp() throws Exception {
+        mMockITelephony = mock(ITelephony.class);
+        mMockSubscriptionManager = mock(SubscriptionManager.class);
+        mMockContext = mock(Context.class);
+        when(mMockContext.getSystemService(eq(Context.TELEPHONY_SUBSCRIPTION_SERVICE)))
+                .thenReturn(mMockSubscriptionManager);
+
+        mTelephonyManager = new TelephonyManager(mContext);
+        TelephonyManager.setupITelephonyForTest(mMockITelephony);
+        TelephonyManager.enableServiceHandleCaching();
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        TelephonyManager.setupITelephonyForTest(null);
+        TelephonyManager.disableServiceHandleCaching();
+    }
+
+    @Test
+    public void testGetEmergencyNumberListForCategories() throws Exception {
+        Map<Integer, List<EmergencyNumber>> emergencyNumberLists = new HashMap<>();
+        List<EmergencyNumber> emergencyNumberList = new ArrayList<>();
+        EmergencyNumber number_police = new EmergencyNumber(
+                "911",
+                "us",
+                "30",
+                EmergencyNumber.EMERGENCY_SERVICE_CATEGORY_POLICE,
+                new ArrayList<String>(),
+                EmergencyNumber.EMERGENCY_NUMBER_SOURCE_NETWORK_SIGNALING,
+                EmergencyNumber.EMERGENCY_CALL_ROUTING_NORMAL);
+        EmergencyNumber number_fire = new EmergencyNumber(
+                "912",
+                "us",
+                "30",
+                EmergencyNumber.EMERGENCY_SERVICE_CATEGORY_FIRE_BRIGADE,
+                new ArrayList<String>(),
+                EmergencyNumber.EMERGENCY_NUMBER_SOURCE_NETWORK_SIGNALING,
+                EmergencyNumber.EMERGENCY_CALL_ROUTING_NORMAL);
+        emergencyNumberList.add(number_police);
+        emergencyNumberList.add(number_fire);
+        final int test_sub_id = 1;
+        emergencyNumberLists.put(test_sub_id, emergencyNumberList);
+        when(mMockITelephony.getEmergencyNumberList(eq(PKG_NAME), eq(TAG))).thenReturn(
+                emergencyNumberLists);
+
+        // Call TelephonyManager.getEmergencyNumberList(Category)
+        Map<Integer, List<EmergencyNumber>> returnedEmergencyNumberLists =
+                mTelephonyManager.getEmergencyNumberList(
+                        EmergencyNumber.EMERGENCY_SERVICE_CATEGORY_POLICE);
+
+        // Verify the ITelephony service is called
+        verify(mMockITelephony, times(1)).getEmergencyNumberList(eq(PKG_NAME), eq(TAG));
+
+        // Verify the returned number list contains only the police number(s)
+        List<EmergencyNumber> returnedEmergencyNumberList = returnedEmergencyNumberLists.get(
+                test_sub_id);
+        for (EmergencyNumber num : returnedEmergencyNumberList) {
+            assertTrue(num.isInEmergencyServiceCategories(
+                    EmergencyNumber.EMERGENCY_SERVICE_CATEGORY_POLICE));
+        }
+    }
+}