new HeaderContentNegotiationStrategy(), new FixedContentNegotiationStrategy(MediaType.TEXT_HTML));
ContentNegotiatingViewResolver cnViewResolver = new ContentNegotiatingViewResolver();
cnViewResolver.setDefaultViews(viewList);
cnViewResolver.setContentNegotiationManager(manager);
cnViewResolver.afterPropertiesSet();
MockMvc mockMvc =
standaloneSetup(new PersonController())
.setViewResolvers(cnViewResolver, new InternalResourceViewResolver())
.build();