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 splashScreen
@Override
protected void onStart() {
super.onStart();
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Intent i = new Intent(SplashScreenActivity.this, MainActivity.class);
startActivity(i);
finish();
}
}, SPLASH_TIME_OUT);
}
And this is my approach for the test:
@Test
public void splashScreenTimerTest() throws InterruptedException {
StopWatch timer = new StopWatch();
timer.start();
splashScreenActivityController.start();
timer.stop();
long expected = 3000L;
assertThat(String.format("The spalash screen run for longer than expected. It should stay on for [%d] but it run for [%d]",expected,timer.getTime()),timer.getTime(),equalTo(expected));
}
I'm using Android+Robolectric for testing.
I've been googling for a couple days, I tried many things but no result at all. I try to get the UI Thread and wait for it. I tried to you scheduler to get the queue and see if there is any task there. But no result at all.
Any suggestion how can I make my test wait until the new Activity is triggered?
Thanks
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());
}
}