}
  }


  public void testEquals_null() {
    for (LoadingCache<Object, Object> cache : caches()) {
      assertFalse(cache.equals(null));
    }
  }

  public void testEqualsAndHashCode_different() {
    for (CacheBuilder<Object, Object> builder : cacheFactory().buildAllPermutations()) {
      // all caches should be different: instance equality
      new EqualsTester()