smbRandomAccessFile.write(42);
        assertEquals(1, smbRandomAccessFile.getFilePointer());
    }

    @Test
    void testWriteByteArray() throws SmbException {
        byte[] testData = new byte[] { 0, 1, 2, 3, 4 };

        // Mock the write operation
        doAnswer(new Answer<Void>() {
            @Override
            public Void answer(InvocationOnMock invocation) throws Throwable {

        byte[] buffer = new byte[10];
        int bytesRead = stream.read(buffer, 2, 5);

        assertEquals(5, bytesRead);
        assertEquals("01234", new String(buffer, 2, 5));
    }

    public void test_available_delegatesToUnderlying() throws IOException {
        // Test that available() delegates to underlying stream
        byte[] data = "Test data".getBytes();

        void shouldIdentifyFailedStates() {
            // Failed states: 5=disconnecting, 6=disconnected/invalid
            int[] failedStates = { 5, 6 };
            int[] nonFailedStates = { 0, 1, 2, 3, 4 };

            for (int state : failedStates) {
                transport.setState(state);
                assertTrue(transport.isFailed(), "State " + state + " should be failed");
            }

        // Test different sizes
        assertEquals("00", Hexdump.toHexString(0, 2));
        assertEquals("FF", Hexdump.toHexString(255, 2));
        assertEquals("1234", Hexdump.toHexString(0x1234, 4));
    }

    @Test
    @DisplayName("Should convert long to hex string with padding")
    void testLongToHexString() {
        // Test various long values

        assertEquals(0, new BigDecimal("0.123").compareTo(BigDecimalConversionUtil.toBigDecimal(Double.valueOf(0.123D))));
        assertEquals(0, new BigDecimal("0.0123").compareTo(BigDecimalConversionUtil.toBigDecimal(Double.valueOf(0.0123D))));
        assertEquals(0, new BigDecimal("0.00123").compareTo(BigDecimalConversionUtil.toBigDecimal(Double.valueOf(0.00123D))));

        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

        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 {