    @Test
    public void expandList() {

        ImmutableList<Value> result = exp(ref("a"), con(SIZE)).eval(createFromByteStream(DUMMY_STREAM).add(PARSEVALUE_2).add(PARSEVALUE_1), enc());
        assertEquals(2 * SIZE, result.size);
        for (int i = 0; i < SIZE; i++) {
            assertEquals(VALUE_1, result.head.asNumeric().intValueExact());
            result = result.tail;
            assertEquals(VALUE_2, result.head.asNumeric().intValueExact());
            result = result.tail;
        }
    }