@Test
public void testArgumentSelector() {
Fields declarator = new Fields("1", "2", "3", "4");
Tuple incoming = new Tuple(1, 2, 3, 4);
Fields selector = new Fields("3", "2");
assertTuple(incoming.get(declarator, selector));
int[] pos = incoming.getPos(declarator, selector);
assertTuple(incoming.get(pos));
assertTuple(TupleViews.createNarrow(pos, incoming));
}
