});
            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("${"));

        assertGetThumbnailUrl(data, expected);

        data = "<meta property=\"og:image\" content=\"/foo.jpg\" />";
        expected = "http://example.com/foo.jpg";
        assertGetThumbnailUrl(data, expected);

        data = "<img src=\"http://example/foo.jpg\">";
        expected = "http://example/foo.jpg";
        assertGetThumbnailUrl(data, expected);

        data = "<img src=\"http://example/foo.jpg\">" //

supported.uploaded.js.extentions=js
# Supported CSS file extensions for upload.
supported.uploaded.css.extentions=css
# Supported media file extensions for upload.
supported.uploaded.media.extentions=jpg,jpeg,gif,png,swf
# Supported files for upload.
supported.uploaded.files=license.properties
# Supported languages.

                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';
            }
        }

    /** The key of the configuration. e.g. css */
    String SUPPORTED_UPLOADED_CSS_EXTENTIONS = "supported.uploaded.css.extentions";

    /** The key of the configuration. e.g. jpg,jpeg,gif,png,swf */
    String SUPPORTED_UPLOADED_MEDIA_EXTENTIONS = "supported.uploaded.media.extentions";

    /** The key of the configuration. e.g. license.properties */

    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);