}

  public void testParse_maximumSizeRepeated() {
    assertThrows(IllegalArgumentException.class, () -> parse("maximumSize=10, maximumSize=20"));
  }

  public void testParse_maximumWeight() {
    CacheBuilderSpec spec = parse("maximumWeight=9000");
    assertThat(spec.initialCapacity).isNull();
    assertThat(spec.maximumWeight).isEqualTo(9000L);
    assertThat(spec.concurrencyLevel).isNull();