MockHttpServletResponse response = new MockHttpServletResponse();
HandlerExecutionChain chain = mapping.getHandler(request);
assertEquals(1, chain.getInterceptors().length);
assertTrue(chain.getInterceptors()[0] instanceof ConversionServiceExposingInterceptor);
ConversionServiceExposingInterceptor interceptor = (ConversionServiceExposingInterceptor) chain.getInterceptors()[0];
interceptor.preHandle(request, response, handler);
assertSame(appContext.getBean("conversionService"), request.getAttribute(ConversionService.class.getName()));
RequestMappingHandlerAdapter adapter = appContext.getBean(RequestMappingHandlerAdapter.class);
assertNotNull(adapter);
adapter.handle(request, response, handlerMethod);