How to check JSON in response body with mockMvc

Question

This is my method inside my controller which is annotated by @Controller

@RequestMapping(value = "/getServerAlertFilters/{serverName}/", produces = "application/json; charset=utf-8")
    @ResponseBody
    public JSONObject getServerAlertFilters(@PathVariable String serverName) {
        JSONObject json = new JSONObject();
        List<FilterVO> filteredAlerts = alertFilterService.getAlertFilters(serverName, "");
        JSONArray jsonArray = new JSONArray();
        jsonArray.addAll(filteredAlerts);
        json.put(SelfServiceConstants.DATA, jsonArray);
        return json;
    }

I am expecting {"data":[{"useRegEx":"false","hosts":"v2v2v2"}]} as my json.

And this is my JUnit test:

@Test
    public final void testAlertFilterView() {       
        try {           
            MvcResult result = this.mockMvc.perform(get("/getServerAlertFilters/v2v2v2/").session(session)
                    .accept("application/json"))
                    .andDo(print()).andReturn();
            String content = result.getResponse().getContentAsString();
            LOG.info(content);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

Here is the console output:

MockHttpServletResponse:
              Status = 406
       Error message = null
             Headers = {}
        Content type = null
                Body = 
       Forwarded URL = null
      Redirected URL = null
             Cookies = []

Even result.getResponse().getContentAsString() is an empty string.

Can someone please suggest how to get my JSON in my JUnit test method so that I can complete my test case.

Answer 1

I use TestNG for my unit testing. But in Spring Test Framework they both looks similar. So I believe your test be like below

@Test
public void testAlertFilterView() throws Exception {
    this.mockMvc.perform(get("/getServerAlertFilters/v2v2v2/").
            .andExpect(status().isOk())
            .andExpect(content().json("{'data':[{'useRegEx':'false','hosts':'v2v2v2'}]}"));
    }

If you want check check json Key and value you can use jsonpath .andExpect(jsonPath("$.yourKeyValue", is("WhatYouExpect")));

You might find thatcontent().json() are not solveble please add

import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;