assertTrue(exception.getMessage().contains("FILE_EXISTS"));
        assertTrue(exception.getMessage().contains("File already exists"));
        assertTrue(exception.getMessage().contains("document.pdf already exists"));

        // Without custom message
        exception = new SmbOperationException(SmbOperationException.ErrorCode.DISK_FULL, null);
        assertTrue(exception.getMessage().contains("DISK_FULL"));

        // Verify the exception message indicates name resolution failure
        assertTrue(exception.getMessage().contains("NONEXISTENT") || exception.getMessage().contains("unknown")
                || exception.getMessage().contains("not found"), "Exception message should indicate name resolution failure");
    }

    @Test

        if (e != null) {
            if (e instanceof MetadataNotFoundException) {
                logger.debug(e.getMessage());
            } else if (logger.isDebugEnabled()) {
                logger.warn(e.getMessage(), e);
            } else {
                logger.warn(e.getMessage());
            }
        }
    }

    @Override
    public void metadataInvalid(RepositoryEvent event) {

        // Arrange & Act
        SMBProtocolDowngradeException ex = new SMBProtocolDowngradeException();

        // Assert - message and cause are null
        assertNull(ex.getMessage(), "Default constructor should have null message");
        assertNull(ex.getCause(), "Default constructor should have null cause");

        // Assert - toString shows class name when message is null

        PACDecodingException e = assertThrows(PACDecodingException.class, () -> new Pac(emptyData, keys));
        // Any PACDecodingException is acceptable for this test
        assertNotNull(e.getMessage());
    }

    @Test
    void testTooSmallPac() {
        // Test that PAC smaller than 8 bytes is rejected
        byte[] smallData = new byte[4];

        assertEquals(servletException, runtimeException.getCause());

        // Verify that the message is preserved from the cause
        assertTrue(runtimeException.getMessage().contains(ServletException.class.getName()));
        assertTrue(runtimeException.getMessage().contains(errorMessage));
    }

    @Test
    public void test_constructor_withServletExceptionWithCause() {
        // Create a root cause exception

     * Test the default constructor.
     */
    @Test
    void testDefaultConstructor() {
        PACDecodingException e = new PACDecodingException();
        // Expect null message and null cause
        assertNull(e.getMessage());
        assertNull(e.getCause());
    }

    /**
     * Test the constructor with a message.
     */
    @Test
    void testMessageConstructor() {

            } catch (RepositoryMetadataReadException e) {
                if (getLogger().isDebugEnabled()) {
                    getLogger().warn(e.getMessage(), e);
                } else {
                    getLogger().warn(e.getMessage());
                }
                return setRepository;
            }

            if (repoMetadata.isSnapshot() && (previousMetadata != null)) {

    @Test
    void testNoArgsConstructor() {
        // Test the no-argument constructor
        ConnectionTimeoutException exception = new ConnectionTimeoutException();
        assertNull(exception.getMessage(), "Message should be null for no-arg constructor");
        assertNull(exception.getCause(), "Cause should be null for no-arg constructor");
    }

    @Test
    void testStringConstructor() {

    void testDefaultConstructor() {
        // Given & When
        CIFSUnsupportedCryptoException exception = new CIFSUnsupportedCryptoException();

        // Then
        assertNull(exception.getMessage(), "Default constructor should have null message");
        assertNull(exception.getCause(), "Default constructor should have null cause");