Write simple service test on robolectric

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1. Create android service project to test

See http://marakana.com/forums/android/examples/60.html for this example

2. Create test unit for service

Code

package com.example.a7;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.Robolectric;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.shadows.ShadowActivity;
import org.robolectric.shadows.ShadowIntent;
import android.content.Intent;
import android.widget.Button;
@RunWith(RobolectricTestRunner.class)
public class MainActivityTest {
MainActivity mainActivity;
Button btnStart;
Button btnStop;
@Before
public void setup(){
mainActivity = new MainActivity();
mainActivity.onCreate(null);
btnStart = (Button) mainActivity.findViewById(R.id.buttonStart);
btnStop = (Button) mainActivity.findViewById(R.id.buttonStop);
}
@Test
public void testStart(){
    btnStart.performClick();
    ShadowActivity sa = Robolectric.shadowOf(mainActivity);
    Intent intent = sa.getNextStartedService();
    ShadowIntent si = Robolectric.shadowOf(intent);
    Assert.assertSame(si.getComponent().getClassName(), MyService.class.getName());
}

@Test
public void testStop(){
    btnStart.performClick();
    btnStop.performClick();
    ShadowActivity sa = Robolectric.shadowOf(mainActivity);
    Intent intent = sa.getNextStoppedService();
    ShadowIntent si = Robolectric.shadowOf(intent);
    Assert.assertEquals(si.getComponent().getClassName(), MyService.class.getName());
}

}