final ArgumentCaptor<FutureCallback> argCaptor = ArgumentCaptor.forClass(FutureCallback.class);
Mockito.verify(this.connPool).lease(
Mockito.eq(host), Mockito.isNull(), argCaptor.capture());
final ConnRequestCallback connRequestCallback = (ConnRequestCallback) argCaptor.getValue();
connRequestCallback.cancelled();
Mockito.verify(this.responseConsumer).cancel();
Mockito.verify(this.callback).cancelled();
Mockito.verify(this.responseConsumer).close();
Mockito.verify(this.requestProducer).close();
}