cache.put(10, 20);
    assertEquals(Integer.valueOf(20), cache.getIfPresent(10));

    fakeTicker.advance(500, MILLISECONDS);
    assertEquals(null, cache.getIfPresent(10));
  }

  public void testMapMethods() {
    Cache<Integer, Integer> cache = CacheBuilder.newBuilder().build();

    ConcurrentMap<Integer, Integer> asMap = cache.asMap();

    cache.put(10, 100);
    cache.put(2, 52);