@Test
void lessThanPageSize() {

    domainBuilder.topicMessage().block();
    TopicMessageFilter filter = TopicMessageFilter.builder()
            .startTime(Instant.EPOCH)
            .build();
    pollingTopicMessageRetriever.retrieve(filter)
            .map(TopicMessage::getSequenceNumber)
            .as(StepVerifier::create)
            .expectNext(1L)
            .expectComplete()
            .verify(Duration.ofMillis(500));
}