do {
clock = _randClockFactory.next();
} while(batch.put(new SimpleEvent<String>("Event." + clock, clock)));
assertTrue(clock.after(batch.getMinClock()));
assertTrue(clock.after(batch.getMaxClock()));
assertEquals(capacity, batch.getSize());
batch.setCompletionTime(System.currentTimeMillis() + 1);
assertTrue(batch.getCreationTime() < batch.getCompletionTime());