code: @Test public void shouldUseProcessorsConfiguredInWroProperties() throws Exception {
    final ObjectFactory<WroConfiguration> configurationFactory=new PropertiesAndFilterConfigWroConfigurationFactory(mockFilterConfig){
      @Override public Properties createProperties(){
        final Properties props=new Properties();
        props.setProperty(ConfigConstants.managerFactoryClassName.name(),ConfigurableWroManagerFactory.class.getName());
        props.setProperty(ConfigurableProcessorsFactory.PARAM_PRE_PROCESSORS,CssMinProcessor.ALIAS);
        return props;
      }
    }
  ;
    victim.setWroConfigurationFactory(configurationFactory);
    victim.setWroManagerFactory(null);
    victim.init(mockFilterConfig);
    Context.set(Context.webContext(mockRequest,mockResponse,mockFilterConfig),configurationFactory.create());
    final WroManagerFactory factory=victim.getWroManagerFactory();
    assertEquals(1,factory.create().getProcessorsFactory().getPreProcessors().size());
  }
  