@Test void getDays_consistentWithDateUtil() {
    assertThat(CassandraUtil.getDays(DAYS.toMillis(2), DAYS.toMillis(1)))
      .extracting(d -> d.atStartOfDay().toEpochSecond(ZoneOffset.UTC) * 1000)
      .containsExactlyElementsOf(DateUtil.epochDays(DAYS.toMillis(2), DAYS.toMillis(1)));
  }
Sanity checks our bucketing scheme for numeric overflow
zipkin-storage/cassandra/src/test/java/zipkin2/storage/cassandra/CassandraUtilTest.java