ndrBuffer.advance(10);
        assertEquals(20, ndrBuffer.getIndex());
        assertEquals(20, ndrBuffer.getLength()); // Length should be updated
    }

    @Test
    void testAlign() {
        // Align to 4-byte boundary
        ndrBuffer.setIndex(1);
        int alignedBytes = ndrBuffer.align(4);
        assertEquals(3, alignedBytes); // Should advance by 3 bytes (1 -> 4)