@Test
public void testConvertRequestFilterOnTimestamp() throws Exception {

  FactSearchCriteria criteria = converter.apply(new SearchFactRequest()
          .setAfter(123456789L)
          .setBefore(987654321L)
  );
  assertEquals(123456789L, (long) criteria.getStartTimestamp());
  assertEquals(987654321L, (long) criteria.getEndTimestamp());
  assertEquals(SetUtils.set(FactSearchCriteria.TimeFieldStrategy.timestamp), criteria.getTimeFieldStrategy());
  assertEquals(FactSearchCriteria.MatchStrategy.any, criteria.getTimeMatchStrategy());
}