AggregateDistinctValueFilter extends AggregateDistinctValue { public AggregateDistinctValueFilter(IAggregate agg) { super(agg); } AggregateDistinctValueFilter(IAggregate agg); IAggregate cloneAggregate(); @Override void enter(Object value, boolean filter); @Override void leave(Object value, boolean filter);  }
@Test public void testAggregateDistinctValueFilter() { try { agg = new AggregateDistinctValueFilter(null); fail(); } catch (IllegalArgumentException e) { Assert.assertTrue(true); } }