@Test(expected = WroRuntimeException.class) public void shouldNotProcessGroupWithNoResources() throws Exception { final HttpServletRequest request = Mockito.mock(HttpServletRequest.class); final HttpServletResponse response = Context.get().getResponse(); Mockito.when(request.getRequestURI()).thenReturn("/noResources.css"); WroConfiguration config = new WroConfiguration(); config.setIgnoreEmptyGroup(false); Context.set(Context.webContext(request, response, Mockito.mock(FilterConfig.class)), config); WroModel model = new WroModel(); model.addGroup(new Group("noResources")); WroManagerFactory managerFactory = new BaseWroManagerFactory().setModelFactory(WroUtil.factoryFor(model)); managerFactory = new InjectableWroManagerFactoryDecorator(managerFactory); managerFactory.create().process(); }