CacheBuilder.newBuilder().concurrencyLevel(1).build(identityLoader());
    LocalCache<?, ?> map = CacheTesting.toLocalCache(cache);
    assertThat(map.segments).hasLength(1);
  }

  public void testConcurrencyLevel_large() {
    CacheBuilder.newBuilder().concurrencyLevel(Integer.MAX_VALUE);
    // don't actually build this beast
  }

  public void testMaximumSize_negative() {