@Before
public void setUp() throws Exception {
    MyActivity activity = new MyActivity();
    activity.onCreate(null);

    ImageView image = (ImageView) activity.findViewById(R.id.sun_earth_image);
    Button button = (Button) activity.findViewById(R.id.next_screen_button);
}

@Test
public void shouldHaveHiddenButton() throws Exception {
    assertViewIsHidden(button);
}

@Test
public void shouldShowButtonAfterImageClick() throws Exception {
    image.performClick();
    assertViewIsVisible(button);
}