assertThrows(IllegalArgumentException.class, () -> builder.expireAfterWrite(-1, SECONDS));
  }

  @GwtIncompatible // Duration
  public void testTimeToLive_negative_duration() {
    CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
    assertThrows(
        IllegalArgumentException.class, () -> builder.expireAfterWrite(Duration.ofSeconds(-1)));
  }