input = createStack(mc, createQueue(mc, two, dup, op)); expected.clear(); expected.accept(createStack(mc, createQueue(mc, two, dup, op))); actual.clear(); eval.apply(input, actual, mc); input = createStack(mc, two, createQueue(mc, one, dup, op), op); expected.clear(); expected.accept(createStack(mc, two, one, one));