assertArrayEquals(expected, actualWritten, "wire format should match expectation");
    }

    static Stream<Arguments> validParams() {
        // fid 0x1234, lastWriteTime 0 -> UTime all 0xFF
        return Stream.of(Arguments.of(0x1234, 0L, new byte[] { 0x34, 0x12, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF }),
                // negative fid wraps around, lastWriteTime = 1000 -> 1 second -> int value 1

        assertTrue(message.contains(description));
    }

    @Test
    @DisplayName("getErrorString for unknown error class")
    void testUnknownErrorClass() {
        int unknownClass = 1234;
        String expected = "unknown error class: 1234";
        assertEquals(expected, NbtException.getErrorString(unknownClass, 0));
    }

    @Test
    @DisplayName("Constructor sets fields and message correctly")
    void testConstructor() {

        }
    }

    /**
     * Test that the constructor initializes all fields correctly
     */
    @Test
    public void testConstructor() {
        // Arrange
        int fid = 0x1234;
        int offset = 100;
        int remaining = 50;
        byte[] buffer = new byte[100];
        int off = 10;
        int len = 40;

        // Act

        byte[] data = new byte[4];
        ByteBuffer buffer = ByteBuffer.wrap(data).order(ByteOrder.LITTLE_ENDIAN);

        // Test with a positive value
        buffer.putShort(0, (short) 0x1234);
        assertEquals(0x1234, NtlmMessage.readUShort(data, 0), "Should read positive UShort correctly.");

        // Test with zero
        buffer.putShort(0, (short) 0);

        final SQLRuntimeException sqlRuntimeException = new SQLRuntimeException(sqlException);

        // ## Act ##
        final String message = sqlRuntimeException.getMessage();

        // ## Assert ##
        System.out.println(message);
        assertContains(message, "ErrorCode=1234");
        assertContains(message, "SQLState=barState");

    }

    @Test
    public void testReadShort() throws IOException {
        // Little-endian 0x1234 -> 0x34 0x12
        byte[] data = new byte[] { 0x34, 0x12, 0x00, 0x00 };
        PacDataInputStream pdis = createInputStream(data);
        assertEquals((short) 0x1234, pdis.readShort());
    }

    @Test
    public void testReadInt() throws IOException {

    void testWriteParametersWireFormat() {
        int level = 0x1234;
        Trans2QueryFSInformation cmd = new Trans2QueryFSInformation(level);
        byte[] buf = newBuffer(10);

        int written = cmd.writeParametersWireFormat(buf, 0);
        assertEquals(2, written, "writeParametersWireFormat should write exactly 2 bytes");

        // Verify little-endian encoding (0x1234 -> 0x34 0x12)

        SpnegoContext ctx = newContext();

        // The initial token path should ask the mechanism for a zero-length optimistic token
        when(this.mechContext.getFlags()).thenReturn(0x1234);
        when(this.mechContext.initSecContext(any(byte[].class), eq(0), eq(0))).thenReturn(new byte[] { 0x01, 0x02 });

        // Act: len==0 triggers initial token construction

    void setUp() {
        smb = new TestServerMessageBlock();
    }

    @Test
    void testInt2ReadWrite() {
        byte[] buffer = new byte[2];
        ServerMessageBlock.writeInt2(0x1234, buffer, 0);
        assertEquals(0x1234, ServerMessageBlock.readInt2(buffer, 0));
    }

    @Test
    void testInt4ReadWrite() {
        byte[] buffer = new byte[4];
        ServerMessageBlock.writeInt4(0x12345678, buffer, 0);

        packet.questionName = mockQuestionName;
        packet.recordName = mockRecordName;
    }

    @Test
    void testWriteInt2() {
        byte[] dst = new byte[2];
        NameServicePacket.writeInt2(0x1234, dst, 0);
        assertEquals((byte) 0x12, dst[0]);
        assertEquals((byte) 0x34, dst[1]);
    }

    @Test
    void testWriteInt4() {
        byte[] dst = new byte[4];