@Test
void should_be_outOfService_when_set_operation_is_false() throws Exception {

    doReturn(setFuture).when(client).set("__com.netflix.evcache.server.healthcheck", 300, "Greed is good!");
    doReturn(false).when(setFuture).get(5, TimeUnit.SECONDS);
    doReturn(getFuture).when(client).asyncGet("__com.netflix.evcache.server.healthcheck");
    doReturn("Greed is good!").when(getFuture).get(5, TimeUnit.SECONDS);
    StepVerifier.create(indicator.doHealthCheck(builder))
                .expectNext(new Health.Builder().outOfService().build())
                .verifyComplete();
}