Android Testing Handler.postDelayed

Question

I\'m newbie on Android and get stuck on testing a SplashScreen, basically what I\'m doing is trying to test that the splash screen stays on for 3s. this is the code for the

Answer 1

In Robolectric 3.0, they updated this API. The actual version:

ShadowLooper.runUiThreadTasksIncludingDelayedTasks();

Usage example:

public class MainActivity extends AppCompatActivity {
    ........

    public void finishGame() {
        Handler h = new Handler();
        h.postDelayed(new Runnable() {
            @Override
            public void run() {
                finish();
            }
        }, 5000);
    }
}

Test arount it:

@RunWith(RobolectricTestRunner.class)
@Config(constants = BuildConfig.class, sdk=21)
public class MainActivityTest {

    @Test
    public void testFinishing() throws InterruptedException {
        MainActivity mainActivity = new MainActivity();

        assertFalse(mainActivity.isFinishing());

        mainActivity.finishGame();
        ShadowLooper.runUiThreadTasksIncludingDelayedTasks();

        assertTrue(mainActivity.isFinishing());
    }
}

Answer 2

In Robolectric 3.0, IuriiO's answer would translate to-

ShadowLooper.pauseMainLooper();
Robolectric.getForegroundThreadScheduler().advanceBy(intervalMs);
ShadowLooper.unPauseMainLooper();

Answer 3

You can try:

Robolectric.pauseMainLooper();
Robolectric.getUiThreadScheduler().advanceBy(intervalMs);
Robolectric.unPauseMainLooper();

or, if you just was the runnable to be called:

Robolectric.runUiThreadTasksIncludingDelayedTasks();