Tuple t = tf.newTuple();
Map<String, Object> input = new HashMap<String, Object>();
input.put("key1", "value1");
input.put("key2", "value2");
t.append(input);
plan.attachInput(t);
Result res = newOp.getNext(new HashMap<String, Object>());
if(res.returnStatus == POStatus.STATUS_OK) {
//System.out.println(res.result + " : " + str);
assertEquals(input, res.result);
}