assertSame(data, blob.get(), "get() should expose the same array reference passed in");
        assertEquals(data.length, blob.length(), "length() should match underlying array length");
        assertEquals("deadbeef", blob.toString(), "toString() should reflect underlying content");
        assertEquals(data.hashCode(), blob.hashCode(), "hashCode should equal the array's hashCode");
    }

                // An error that maps via DOS mapping
                Arguments.of(0x00000002, SmbException.getMessageByCode(0x00000002)),
                // Unknown code → hex string (uppercase)
                Arguments.of(0xDEADBEEF, "0xDEADBEEF"));
    }

    @ParameterizedTest
    @MethodSource("errorCodes")
    void constructorInitialisesMessageAndStatus(int code, String expectedMsg) {
        SmbAuthException e = new SmbAuthException(code);

        buf.enc_ndr_short(0); // context_id
        buf.enc_ndr_short(0); // cancel_count
        buf.enc_ndr_long(0xDEADBEEF); // fault status

        // Decode
        buf.setIndex(0);
        TestMessage m = new TestMessage();
        m.decode(buf);

        assertEquals(3, m.ptype);
        assertEquals(0xDEADBEEF, m.result);
        assertNotNull(m.getResult());
    }

    @Test

    }

    @Test
    @DisplayName("Unknown DOS error code yields empty Optional")
    void testUnknownCode() {
        Optional<Integer> noMatch = findNtStatus(0xdeadbeef);
        assertFalse(noMatch.isPresent(), "Mapping for unknown code should be absent");
    }

    @Test
    @DisplayName("Mocked consumer receives correct NTSTATUS value")
    void testConsumerInteraction() {

  int size;

  String data;

  @BeforeExperiment
  public void setUp() {
    // precalculate some random strings of ascii characters.
    StringBuilder sb = new StringBuilder();
    Random random = new Random(0xdeadbeef); // for unpredictable but reproducible behavior
    sb.ensureCapacity(size);
    for (int k = 0; k < size; k++) {
      // [9-127) includes all ascii non-control characters

  Charset charset;
  ByteSource data;

  @BeforeExperiment
  public void setUp() {
    charset = Charset.forName(charsetName);
    StringBuilder sb = new StringBuilder();
    Random random = new Random(0xdeadbeef); // for unpredictable but reproducible behavior
    sb.ensureCapacity(size);
    for (int k = 0; k < size; k++) {
      // [9-127) includes all ascii non-control characters

        val = ndrBuffer.dec_ndr_short();
        assertEquals(0x1234, val);
        assertEquals(4, ndrBuffer.getIndex());
    }

    @Test
    void testEncDecNdrLong() {
        ndrBuffer.enc_ndr_long(0xDEADBEEF);
        assertEquals(4, ndrBuffer.getIndex()); // Aligned to 4, then advanced by 4
        assertEquals(4, ndrBuffer.getLength());
        assertEquals((byte) 0xEF, buffer[0]); // Little-endian

    List<Integer> one = Arrays.asList((int) 1);
    assertThat(Ints.toArray(one)).isEqualTo(ARRAY1);

    int[] array = {(int) 0, (int) 1, (int) 0xdeadbeef};

    List<Integer> three = Arrays.asList((int) 0, (int) 1, (int) 0xdeadbeef);
    assertThat(Ints.toArray(three)).isEqualTo(array);

    assertThat(Ints.toArray(Ints.asList(array))).isEqualTo(array);
  }

  public void testToArray_threadSafe() {

    }

    @Test
    public void testInvalidProtocolId() throws Exception {
        assertThrows(SmbException.class, () -> {
            validator.validateSmbHeader(0xDEADBEEF, 64, 0x00);
        });
    }

    @Test
    public void testInvalidSmb1HeaderSize() throws Exception {
        assertThrows(SmbException.class, () -> {

        }
        request.setFileId(newFileId);
        request.setFileInfoClass((byte) 0x0A); // This will set info type to SMB2_0_INFO_FILE
        request.setAdditionalInformation(0xDEADBEEF);
        request.setQueryFlags(0xCAFEBABE);

        // Add input buffer
        Encodable mockInputBuffer = mock(Encodable.class);
        when(mockInputBuffer.size()).thenReturn(64);