@Test public void testAllOfFuturesHandlesZeroFutures() throws Exception { KafkaFuture<Void> allFuture = KafkaFuture.allOf(); assertTrue(allFuture.isDone()); assertFalse(allFuture.isCancelled()); assertFalse(allFuture.isCompletedExceptionally()); allFuture.get(); }