@Test
public void testEmpty() throws EtcdException {

    EtcdWatcherSplittingConsumer splitter = new EtcdWatcherSplittingConsumer(empty(), consumers);
    splitter.accept(1L, Collections.emptyList());
    assertThat(configConsumer.counter.get()).isEqualTo(0L);
    assertThat(operConsumer.counter.get()).isEqualTo(0L);
}