@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 );
}