assertThat(spec.writeExpirationDuration).isEqualTo(10L);
    assertCacheBuilderEquivalence(
        CacheBuilder.newBuilder().expireAfterWrite(10L, SECONDS), CacheBuilder.from(spec));
  }

  public void testParse_writeExpirationRepeated() {
    assertThrows(
        IllegalArgumentException.class, () -> parse("expireAfterWrite=10s,expireAfterWrite=10m"));
  }

  public void testParse_accessExpirationDays() {