}

    public void test_init() {
        try {
            labelTypeHelper.init();
        } catch (Exception e) {
            fail("init() should not throw an exception: " + e.getMessage());
        }
    }

    public void test_load() {
        int result = labelTypeHelper.load();
        assertTrue(result >= 0);
    }

    public void test_refresh() {

            logger.error("Failed to purge user info.", e);
            resultBuf.append(e.getMessage()).append("\n");
        }

        // update job logs
        try {
            jobLogService.updateStatus();
        } catch (final Exception e) {
            logger.error("Failed to purge job logs.", e);
            resultBuf.append(e.getMessage()).append("\n");
        }

        return resultBuf.toString();
    }

    void defaultConstructor_behavesAsExpected() {
        // Arrange & Act
        SMBProtocolDecodingException ex = new SMBProtocolDecodingException();

        // Assert state
        assertNull(ex.getMessage(), "Default constructor should have null message");
        assertNull(ex.getCause(), "Default constructor should have null cause");
        assertTrue(ex instanceof CIFSException, "Should be a CIFSException subtype");

        SMBSignatureValidationException ex = new SMBSignatureValidationException(msg);

        // Assert
        if (msg == null) {
            assertNull(ex.getMessage(), "Null message should remain null");
        } else {
            assertEquals(msg, ex.getMessage(), "Message should be stored as provided");
        }
        assertNull(ex.getCause(), "Cause should be null for message-only ctor");

        DcerpcException exception = new DcerpcException(errorCode);

        assertEquals(errorCode, exception.getErrorCode(), "Error code should match the input.");
        assertTrue(exception.getMessage().contains("DCERPC_FAULT_ACCESS_DENIED"),
                "Message should contain the corresponding fault message.");
    }

    /**
     * Test constructor DcerpcException(int error) with an unknown error code.
     */

        byte[] emptyToken = new byte[0];
        PACDecodingException e = assertThrows(PACDecodingException.class, () -> new KerberosTicket(emptyToken, (byte) 0, keys));
        assertEquals("Empty kerberos ticket", e.getMessage());
    }

    @Test
    void testConstructorWithMalformedToken() {
        // Test that PACDecodingException is thrown for a malformed token
        byte[] malformedToken = new byte[] { 0x01, 0x02, 0x03 };

        } catch (FessSystemException e) {
            assertEquals("Invalid format: 12", e.getMessage());
        }

        try {
            IntervalControlHelper.parseTime("12:30:45");
            fail("Should throw FessSystemException");
        } catch (FessSystemException e) {
            assertEquals("Invalid format: 12:30:45", e.getMessage());
        }

        try {
            IntervalControlHelper.parseTime("24:00");

        } catch (CurlException e) {
            assertTrue(e.getMessage().contains("Failed to access the content"));
            // The cause should be another CurlException from getContentAsStream()
            assertTrue(e.getCause() instanceof CurlException);
            CurlException innerException = (CurlException) e.getCause();
            assertTrue(innerException.getMessage().contains("The content does not exist"));

        assertEquals(SmbException.getStatusByCode(-1), e.getNtStatus());
        assertEquals(SmbException.getMessageByCode(-1), e.getMessage());
    }

    @Test
    void zeroCodeProducesSuccess() {
        SmbAuthException e = new SmbAuthException(0);
        assertEquals("NT_STATUS_SUCCESS", e.getMessage());
        assertEquals(SmbException.getStatusByCode(0), e.getNtStatus());
    }

        }
    }

    public void test_writeThreadDump_withNullPath() {
        try {
            ThreadDumpUtil.writeThreadDump(null);
            // Should not throw exception but log warning
        } catch (Exception e) {
            fail("writeThreadDump should handle null path gracefully: " + e.getMessage());
        }
    }