Unit testing a broadcast receiver?

Question

Here\'s a BroadcastReceiver from my project, which I\'m looking to unit test. When the user makes a phone call, it grabs the phone number, and sets up an intent to start a new

Answer 1

corlettk pointed me at the MockContext object in Android, which does the trick. I've made a subclass of it, TestContext, which looks like this:

public class TestContext extends MockContext
{
    private List mReceivedIntents = new ArrayList();

    @Override
    public String getPackageName()
    {
        return "com.mypackage.test";
    }

    @Override
    public void startActivity(Intent xiIntent)
    {
        mReceivedIntents.add(xiIntent);
    }

    public List getReceivedIntents()
    {
        return mReceivedIntents;
    }
}

And my test case now looks like this:

public class OutgoingCallReceiverTest extends AndroidTestCase
{
    private OutgoingCallReceiver mReceiver;
    private TestContext mContext;

    @Override
    protected void setUp() throws Exception
    {
        super.setUp();

        mReceiver = new OutgoingCallReceiver();
        mContext = new TestContext();
    }

    public void testStartActivity()
    {
        Intent intent = new Intent(Intent.ACTION_NEW_OUTGOING_CALL);
        intent.putExtra(Intent.EXTRA_PHONE_NUMBER, "01234567890");

        mReceiver.onReceive(mContext, intent);        
        assertEquals(1, mContext.getReceivedIntents().size());
        assertNull(mReceiver.getResultData());

        Intent receivedIntent = mContext.getReceivedIntents().get(0);
        assertNull(receivedIntent.getAction());
        assertEquals("01234567890", receivedIntent.getStringExtra("phoneNum"));
        assertTrue((receivedIntent.getFlags() & Intent.FLAG_ACTIVITY_NEW_TASK) != 0);
    }
}