code: /** 
   * Test that processing invalid sass css produces exceptions.
   */
  @Test public void shouldFailWhenInvalidSassCssIsProcessed() throws Exception {
    final File testFolder=new File(url.getFile(),"invalid");
    WroTestUtils.forEachFileInFolder(testFolder,new Function<File,Void>(){
      @Override public Void apply(    final File input) throws Exception {
        try {
          processor.process(null,new FileReader(input),new StringWriter());
          fail("Shouldn't have failed");
        }
   catch (      final WroRuntimeException e) {
        }
        return null;
      }
    }
  );
  }
  