question: public void testTimedInvokeAll2 ( ) throws InterruptedException { ExecutorService e = new ForkJoinPool ( 1 ) ; PoolCleaner cleaner = null ; try { cleaner = cleaner ( e ) ; List < Future < String > > r = e . invokeAll ( new ArrayList < Callable < String > > ( ) , MEDIUM_DELAY_MS , MILLISECONDS ) ; assertTrue ( r . isEmpty ( ) ) ; } finally { if ( cleaner != null ) { cleaner . close ( ) ; } } }
target:  timed invokeAll(empty collection) returns empty collection