// only green qualifies, and it's in entry 1
Assert.assertTrue(batch.size == 1);
Assert.assertTrue(batch.selected[0] == 1);
batch = makeStringBatch();
expr = new FilterCharScalarLessEqualStringGroupColumn(new HiveChar(new String(green), 10), 0);
expr.evaluate(batch);
// green and red qualify
Assert.assertTrue(batch.size == 2);
Assert.assertTrue(batch.selected[0] == 0);