code: @Test public void testCopyrightAwareProcessor() throws Exception {
    final ResourcePreProcessor decoratedProcessor=new ResourcePreProcessor(){
      public void process(    final Resource resource,    final Reader reader,    final Writer writer) throws IOException {
        IOUtils.copy(reader,writer);
      }
    }
  ;
    final ResourcePreProcessor processor=CopyrightKeeperProcessorDecorator.decorate(decoratedProcessor);
    final URL url=ResourcePreProcessor.class.getResource("copyright");
    final File testFolder=new File(url.getFile(),"test");
    final File expectedFolder=new File(url.getFile(),"expectedCopyrightAware");
    WroTestUtils.compareFromDifferentFoldersByExtension(testFolder,expectedFolder,"css",processor);
  }
  