@RunWith(AndroidJUnit4.class)
@SmallTest
public class EmailActivityTest {

    @Rule public ActivityScenarioRule<EmailActivity> activityScenarioRule
        = new ActivityScenarioRule<>(EmailActivity.class);

    @Test
    public void testEditTextDoneEmail() {
        // Type email and press the action button
        onView(withId(R.id.emailEditText)).perform(typeText(EMAIL_VALID), pressImeActionButton());

        Context ctx = ApplicationProvider.getApplicationContext();
        InputMethodManager inputMethodManager = (InputMethodManager) ctx.getSystemService(Context.INPUT_METHOD_SERVICE);

        Assert.assertTrue(inputMethodManager.isAcceptingText());
    }

}