I'm trying to unit test a broadcast receiver which listens for "com.android.music.metachanged" intents using JUnit4 and Mockito.
The broadcast receiver starts a service when it receives an intent. I want to assert that the service is started. I also want to assert that the string extra "artist" of the received intent is the same as the one of the sent intent.
This is what I have so far...
@RunWith(PowerMockRunner.class)
public class MusicBroadcastReceiverUnitTest {
private MusicBroadcastReceiver mReceiver;
@Mock
private Context mContext;
@Before
public void setUp() {
MockitoAnnotations.initMocks(this);
mReceiver = new MusicBroadcastReceiver();
}
@Test
public void testStartMusicRegistrationService() {
Intent intent = new Intent("com.android.music.metachanged");
intent.putExtra("artist", "SampleArtist");
mReceiver.onReceive(mContext, intent);
assertNull(mReceiver.getResultData());
ArgumentCaptor<Intent> argument = ArgumentCaptor.forClass(Intent.class);
verify(mContext, times(1)).startService(argument.capture());
Intent receivedIntent = argument.getValue();
assertEquals("SampleArtist", receivedIntent.getStringExtra("artist"));
}
}
But this fires a java.lang.RuntimeException: Method putExtra in android.content.Intent not mocked.
I checked this out, but I think the OP had a different problem, since they don't send out an intent from inside the test body.
All right, I took a look at Method of ContentValues is not mocked as suggested by @Jeff Bowman. Sadly, that question doesn't provide any code, so I hope this will be useful for somebody...
@RunWith(PowerMockRunner.class)
public class MusicBroadcastReceiverUnitTest {
private MusicBroadcastReceiver mReceiver;
@Mock
private Context mContext;
@Mock
private Intent androidIntent;
@Before
public void setUp() {
MockitoAnnotations.initMocks(this);
mReceiver = new MusicBroadcastReceiver();
}
@Test
public void testStartMusicRegistrationService() {
try {
PowerMockito.whenNew(Intent.class)
.withArguments(String.class).thenReturn(androidIntent);
} catch (Exception e) {
e.printStackTrace();
}
when(androidIntent.getAction())
.thenReturn("com.android.music.metachanged");
when(androidIntent.getStringExtra("artist"))
.thenReturn("SampleArtist");
mReceiver.onReceive(mContext, intent);
ArgumentCaptor<Intent> argument = ArgumentCaptor.forClass(Intent.class);
verify(mContext, times(1)).startService(argument.capture());
Intent receivedIntent = argument.getValue();
assertEquals("SampleArtist", receivedIntent.getStringExtra("artist"));
}
}
So yeah, I rather mocked "getStringExtra" than "putExtra". But it worked for me.