Tuple t2 = tf.newTuple(1);
t2.set(0, null);
Tuple t3 = tf.newTuple(0);
TOKENIZE f = new TOKENIZE();
DataBag b = f.exec(t1);
assertTrue(b.size()==3);
Iterator<Tuple> i = b.iterator();
Tuple rt = i.next();
assertTrue(rt.get(0).equals("123"));
rt = i.next();