@Test
public void backwardsEnqueue_success() {
DiffList<Cons<Var, Cons<Var, Var>>, Var> startList =
DiffList.of(Cons.of(new Var(), Cons.of(new Var(), new Var())), new Var());
new LogicAsserter()
.stream(
conj(
Queue.O.last(10, A, Queue.of(Count.of(Count.of(null)), startList)),
Queue.O.last(20, EMPTY, A),
same(startList.head().cdr().cdr(), null),
same(C, startList.head())))
.workUnits(2)
.addRequestedVar(C)
.startSubst()
.put(C, Cons.list(Arrays.asList(20, 10)))
.test();
}
@Test
public void enqueue() {
new LogicAsserter()
.stream(
conj(
Queue.O.last(42, EMPTY, A),
Queue.O.last("1011", A, B),
Queue.O.last(false, B, C),
Queue.O.last('a', C, FINISH_QUEUE),
same(null, FINISH_QUEUE.contents().hole()),
same(D, FINISH_QUEUE.contents().head()),
same(E, FINISH_QUEUE.size())))
.addRequestedVar(D, E)
.workUnits(2)
.startSubst()
.put(D, Cons.list(Arrays.asList(42, "1011", false, 'a')))
.put(E, Count.of(Count.of(Count.of(Count.of(null)))))
.test();
}