[Settings] Try to reduce the time pending on BroadcastReceiver

This is not a design which could resolve the issue, but try to improve
it through reducing the time blocking on BroadcastReceiver and reducing
the happening of ANR.

Bug: 262209170
Test: local and auto
Change-Id: Idec4da3d1deaffb121a5c7a73aeb84b4b0331374

tests/unit/src/com/android/settings/sim/receivers/SimSlotChangeServiceTest.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2022 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.sim.receivers;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+
+import android.app.job.JobScheduler;
+import android.content.Context;
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+@RunWith(AndroidJUnit4.class)
+public class SimSlotChangeServiceTest {
+
+    @Mock
+    private JobScheduler mJobScheduler;
+
+    private Context mContext;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mContext = spy(ApplicationProvider.getApplicationContext());
+        doReturn(mContext).when(mContext).getApplicationContext();
+        mockService(Context.JOB_SCHEDULER_SERVICE, JobScheduler.class, mJobScheduler);
+    }
+
+    @Test
+    public void scheduleSimSlotChange_addSchedule_whenInvoked() {
+        SimSlotChangeService.scheduleSimSlotChange(mContext);
+        verify(mJobScheduler).schedule(any());
+    }
+
+    private <T> void mockService(String serviceName, Class<T> serviceClass, T service) {
+        doReturn(serviceName).when(mContext).getSystemServiceName(serviceClass);
+        doReturn(service).when(mContext).getSystemService(serviceName);
+    }
+}