/**
   * The toString() for two equal values must be the same. For two non-equal values it must be
   * different.
   */
  @Test
  public void testToString() {
    HeroStat heroStatA = HeroStat.valueOf(3, 9, 2);
    HeroStat heroStatB = HeroStat.valueOf(3, 9, 2);
    HeroStat heroStatC = HeroStat.valueOf(3, 9, 8);

    assertThat(heroStatA.toString(), is(heroStatB.toString()));
    assertThat(heroStatA.toString(), is(not(heroStatC.toString())));
  }