});
            task.from(extension.getCssFiles(), sub -> sub.into("css"));
            task.from(extension.getUserManual().getRoot().dir("img"), sub -> {
                sub.include("**/*.png", "**/*.gif", "**/*.jpg", "**/*.svg");
                sub.into("img");
            });
            task.from(extension.getUserManual().getResources());

            task.from(generateDocinfo);

        thumbnailManager.setImageExtention("jpg");
        thumbnailManager.setSplitSize(5);
        thumbnailManager.setSplitHashSize(20);

        String docid = "1234567890abcdef";
        String filename = thumbnailManager.getImageFilename(docid);
        assertNotNull(filename);
        assertTrue(filename.endsWith(".jpg"));
        assertTrue(filename.contains(docid));
    }

                case FessConfig.APP_ENCRYPT_PROPERTY_PATTERN:
                    return ".*password|.*key|.*token|.*secret";
                case FessConfig.APP_EXTENSION_NAMES:
                    return "jpg,jpeg,gif,png";

                case FessConfig.JOB_MAX_CRAWLER_PROCESSES:
                    return "3";
                case FessConfig.MAX_LOG_OUTPUT_LENGTH:
                    return "4000";

        final String tempPath = "/tmp/source.pdf";
        final String outputPath = "/tmp/thumbnail.jpg";

        final String expandedCommand = testCommand.replace("${url}", tempPath).replace("${outputFile}", outputPath);

        assertEquals("convert /tmp/source.pdf -resize 100x100 /tmp/thumbnail.jpg", expandedCommand);
        assertFalse("Expanded command should not contain variables", expandedCommand.contains("${"));

            return "";
        }
        return switch (mimeType) {
        case "image/gif" -> ".gif";
        case "image/tiff" -> ".tiff";
        case "image/svg+xml" -> ".svg";
        case "image/jpeg" -> ".jpg";
        case "image/png" -> ".png";
        case "image/bmp", "image/x-windows-bmp", "image/x-ms-bmp" -> ".bmp";

        DataStoreParams paramMap = new DataStoreParams();
        Pattern pattern = Pattern.compile(".*\\.jpg$");
        paramMap.put("url_exclude_pattern", pattern);

        boolean result1 = indexUpdateCallback.isUrlCrawlable(paramMap, "http://example.com/image.jpg");
        boolean result2 = indexUpdateCallback.isUrlCrawlable(paramMap, "http://example.com/image.png");

        assertFalse(result1);

    }

    @Test
    public void test_generate() {
        // Test generate method is called correctly
        generator = new TestThumbnailGenerator();
        File outputFile = new File("test.jpg");

        assertFalse(generator.isGenerateCalled());
        assertTrue(generator.generate("id123", outputFile));
        assertTrue(generator.isGenerateCalled());
    }

    @Test

                case 'doc': case 'docx': return 'fa-file-word-o';
                case 'xls': case 'xlsx': return 'fa-file-excel-o';
                case 'ppt': case 'pptx': return 'fa-file-powerpoint-o';
                case 'jpg': case 'jpeg': case 'png': case 'gif': return 'fa-file-image-o';
                case 'txt': case 'md': return 'fa-file-text-o';
                case 'html': case 'htm': return 'fa-globe';
            }
        }

    public void test_doFilter_imageExcluded() throws IOException, ServletException {
        setConfig(10, 10);
        testableFilter.setCpuPercent((short) 99);

        String[] imageUris = { "/images/logo.png", "/img/bg.jpg", "/icons/icon.gif", "/favicon.ico", "/img/logo.svg" };
        for (String uri : imageUris) {
            resetMocks();
            mockRequest.setRequestURI(uri);

        assertTrue(exception instanceof java.io.Serializable);
    }

    @Test
    public void test_toString() {
        // Test toString method
        String message = "Thumbnail generation failed for file.jpg";
        ThumbnailGenerationException exception = new ThumbnailGenerationException(message);

        String toStringResult = exception.toString();