@RunWith(RobolectricTestRunner.class)
public class RefereeActivityTest {

  private final Referee referee = Robolectric.buildActivity(Referee.class).create().get();
  private final Button player1Score = (Button) referee.findViewById(R.id.player1Score);
  private final TextView scoreView = (TextView) referee.findViewById(R.id.scoreView);

  @Test
  public void display_Love_All_as_init_score() {
    assertEquals("Love All", scoreView.getText().toString());
  }

  @Test
  public void fifteen_love_after_player1_scores() {
    player1Score.performClick();

    assertEquals("Fifteen Love", scoreView.getText().toString());
  }

  @Test
  public void Thirty_Love_after_player1_scores_twice() {
    player1Score.performClick();
    player1Score.performClick();

    assertEquals("Thirty Love", scoreView.getText().toString());
  }
}