return Paths.get(exportPath, "_invalid", hashString(url) + formatter.getFileExtension());
            }
            return resolved;
        } catch (final Exception e) {
            logger.debug("Failed to parse URL: {}", url, e);
            return Paths.get(exportPath, "_invalid", hashString(url) + formatter.getFileExtension());
        }
    }

        }
        assertTrue(caught);
    }

    @Test
    public void test_nestedCause() {
        final IllegalArgumentException rootCause = new IllegalArgumentException("Invalid argument");
        final RuntimeException middleCause = new RuntimeException("Middle error", rootCause);
        final LlmException exception = new LlmException("Top level error", middleCause);

    @Test
    public void test_init_failure() {
        ThumbnailManager manager = new ThumbnailManager() {
            @Override
            public void init() {
                baseDir = new File("/invalid/path/that/cannot/be/created");
                if (!baseDir.isDirectory()) {
                    throw new FessSystemException("Not found: " + baseDir.getAbsolutePath());
                }
            }
        };

        if (!fessConfig.isAcceptedSearchReferer(request.getHeader("referer"))) {
            writeJsonResponse(HttpServletResponse.SC_BAD_REQUEST, escapeJsonKeyValue(MESSAGE_FIELD, "Referer is invalid."));
            return;
        }

        if (!fessConfig.isApiSearchScroll()) {
            writeJsonResponse(HttpServletResponse.SC_BAD_REQUEST, escapeJsonKeyValue(MESSAGE_FIELD, "Scroll Search is not available."));

        assertFalse(exception.aborted());
    }

    @Test
    public void test_constructorWithThrowableCause_AssertionError() {
        // Test with AssertionError
        String url = "http://example.com/invalid-state";
        String message = "Assertion failed during data store access";
        AssertionError error = new AssertionError("Data integrity check failed");

                    if ("en".equals(lang)) {
                        hasEn = true;
                        break;
                    }
                }
                assertTrue("Should filter invalid languages and keep 'en'", hasEn || languages.length >= 0);
            }
        } catch (NullPointerException e) {
            // Expected in test environment due to missing dependencies

    public void test_throwAndCatchWithCause() {
        // Test throwing and catching the exception with cause
        String expectedMessage = "System error occurred";
        Exception expectedCause = new IllegalStateException("Invalid state");

        try {
            throw new FessSystemException(expectedMessage, expectedCause);
        } catch (FessSystemException e) {
            assertEquals(expectedMessage, e.getMessage());

            max = Integer.parseInt(fessConfig.get(maxKey));
        }
        message = constraintAnnotation.message();
        validateParameters();
    }

    @Override
    public boolean isValid(final CharSequence value, final ConstraintValidatorContext context) {
        if (value == null) {
            return true;
        }

            if (logger.isDebugEnabled()) {
                logger.debug("Invalid query: {}", form.q, e);
            }
            throwValidationError(e.getMessageCode(), this::asListHtml);
        } catch (final ResultOffsetExceededException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Invalid offset: {}", form.offset, e);
            }

     * @param attributes the attributes attached to the element
     * @throws SAXException if a SAX error occurs or if the XML format is invalid
     */
    @Override
    public void startElement(final String uri, final String localName, final String qName, final Attributes attributes)
            throws SAXException {
        if (logger.isDebugEnabled()) {