HardwareTriggerServiceTest.java

package org.iilab.pb.trigger;

import android.content.Intent;
import android.content.IntentFilter;

import org.iilab.pb.trigger.HardwareTriggerReceiver;
import org.iilab.pb.trigger.HardwareTriggerService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.Robolectric;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.shadows.ShadowApplication;

import java.util.List;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.robolectric.Robolectric.shadowOf;

@RunWith(RobolectricTestRunner.class)
public class HardwareTriggerServiceTest {
    @Test
    public void shouldRegisterHardwareTriggerListener() {
        HardwareTriggerService hardwareTriggerService = new HardwareTriggerService();
        hardwareTriggerService.onCreate();
        hardwareTriggerService.onBind(null);

        ShadowApplication shadowApplication = shadowOf(Robolectric.application);
        List<ShadowApplication.Wrapper> registeredReceivers = shadowApplication.getRegisteredReceivers();

        ShadowApplication.Wrapper hardwareReceiverWrapper = null;
        for (ShadowApplication.Wrapper registeredReceiver : registeredReceivers) {
            if (registeredReceiver.getBroadcastReceiver().getClass().equals(HardwareTriggerReceiver.class)) {
                hardwareReceiverWrapper = registeredReceiver;
            }
        }

        assertNotNull(hardwareReceiverWrapper);

        IntentFilter intentFilter = hardwareReceiverWrapper.getIntentFilter();
        assertEquals(Intent.ACTION_SCREEN_ON, intentFilter.getAction(0));
        assertEquals(Intent.ACTION_SCREEN_OFF, intentFilter.getAction(1));
    }
}