private GeneratorRegistry addGeneratorRegistryToConfig(JawrConfig config, String type) {
    GeneratorRegistry generatorRegistry =
        new GeneratorRegistry(type) {
          private static final long serialVersionUID = 1L;

          public boolean isHandlingCssImage(String cssResourcePath) {

            boolean result = false;
            if (cssResourcePath.startsWith("jar:")) {
              result = true;
            }
            return result;
          }
        };
    generatorRegistry.setConfig(config);
    config.setGeneratorRegistry(generatorRegistry);
    return generatorRegistry;
  }
  @Test
  public void testURLImgClasspathCssRewriting() {

    // Set the properties
    Properties props = new Properties();
    props.setProperty(JawrConfig.JAWR_CSS_CLASSPATH_HANDLE_IMAGE, "true");
    config = new JawrConfig("css", props);
    ServletContext servletContext = new MockServletContext();
    config.setContext(servletContext);
    config.setServletMapping("/css");
    config.setCharsetName("UTF-8");
    addGeneratorRegistryToConfig(config, "css");

    // Set up the Image servlet Jawr config
    props = new Properties();
    JawrConfig imgServletJawrConfig = new JawrConfig(JawrConstant.BINARY_TYPE, props);
    GeneratorRegistry generatorRegistry =
        addGeneratorRegistryToConfig(imgServletJawrConfig, JawrConstant.BINARY_TYPE);
    generatorRegistry.setResourceReaderHandler(rsHandler);
    imgServletJawrConfig.setServletMapping("/cssImg/");
    BinaryResourcesHandler imgRsHandler =
        new BinaryResourcesHandler(imgServletJawrConfig, rsHandler, null);
    servletContext.setAttribute(JawrConstant.BINARY_CONTEXT_ATTRIBUTE, imgRsHandler);

    status =
        new BundleProcessingStatus(
            BundleProcessingStatus.BUNDLE_PROCESSING_TYPE, bundle, null, config);

    // Css data
    StringBuffer data = new StringBuffer("background-image:url(jar:style/images/logo.png);");

    // Css path
    String filePath = "style/default/assets/someCSS.css";

    // Expected: goes 3 back to the context path, then add the CSS image servlet mapping,
    // then go to the image path
    // the image is at classPath:/style/images/someImage.gif
    String expectedURL =
        "background-image:url(../../../cssImg/jar_cb3015770054/style/images/logo.png);";
    status.setLastPathAdded(filePath);

    String result = processor.postProcessBundle(status, data).toString();
    assertEquals("URL was not rewritten properly", expectedURL, result);
  }