@SuppressWarnings("unchecked")
  @Test
  public void testCountLongRepeatConcatValues () throws HiveException {
    testAggregateLongIterable ("count",
        new FakeVectorRowBatchFromConcat(
            new FakeVectorRowBatchFromRepeats(
                new Long[] {19L}, 10, 2),
            new FakeVectorRowBatchFromLongIterables(
                3,
                Arrays.asList(new Long[]{13L, 7L, 23L, 29L}))),
         14L);
  }
Unit test for the vectorized GROUP BY operator.
ql/src/test/org/apache/hadoop/hive/ql/exec/vector/TestVectorGroupByOperator.java