assertTrue(next.writeBytesCalls > 0, "chained SMB bytes should be written");
    }

    @Test
    @DisplayName("decode basic AndX block with no chaining")
    void testDecodeBasicNoAndx() {
        DummyAndXBlock block = new DummyAndXBlock() {
            @Override
            int readHeaderWireFormat(byte[] buffer, int bufferIndex) {
                // Simulate fixed-size header parsing