Testing that button starts an Activity with Robolectric

Question

Hi I have the following code:

@RunWith(Test9Runner.class)
public class MainActivityTest 
{
    private MainActivity activity;
    private Button pressMeButto         


        

Answer 1

James Neville's answer works on 4.3. However, I used the AndroidX API, Espresso and Kotlin:

// scenario initialization is done in @Before setUp method, I did it here for brevity
val scenario = ActivityScenario.launch(MainActivity::class.java)

@Test fun test() {
    onView(withId(R.id.button_id)).perform(click())

    scenario.onActivity { activity ->
        val intent = shadowOf(activity).nextStartedActivity
        val shadowIntent = shadowOf(intent)

        assertEquals(SearchResultsActivity::class.java, shadowIntent.intentClass)
    }
}