@Test
public void testShortenList() throws Exception {

	if (DEBUG) {
		out.println("\n*** START testShortenList ***");
	}
	rStub s = makeSeq(1, 1);
	s.bang();
	assertEquals(0, s.iter);
	s.seq(Atom.newAtom(new int[] { 1 }));
	s.bang();
	assertEquals(1, s.iter);
	s.bang();
	assertEquals(2, s.iter);
	if (DEBUG) {
		out.println("*** END testShortenList ***\n");
	}
}