[英]How to check JSON in response body with mockMvc
这是我的控制器中的方法,由@Controller
注释
@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;
}
我期待{"data":[{"useRegEx":"false","hosts":"v2v2v2"}]}
作为我的 json。
这是我的 JUnit 测试:
@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();
}
}
这是控制台输出:
MockHttpServletResponse:
Status = 406
Error message = null
Headers = {}
Content type = null
Body =
Forwarded URL = null
Redirected URL = null
Cookies = []
甚至result.getResponse().getContentAsString()
也是一个空字符串。
有人可以建议如何在我的 JUnit 测试方法中获取我的 JSON,以便我可以完成我的测试用例。
我使用 TestNG 进行单元测试。 但是在 Spring Test Framework 中,它们看起来很相似。 所以我相信你的测试如下
@Test
public void testAlertFilterView() throws Exception {
this.mockMvc.perform(get("/getServerAlertFilters/v2v2v2/").
.andExpect(status().isOk())
.andExpect(content().json("{'data':[{'useRegEx':'false','hosts':'v2v2v2'}]}"));
}
如果你想检查 json 键和值,你可以使用 jsonpath .andExpect(jsonPath("$.yourKeyValue", is("WhatYouExpect")));
您可能会发现content().json()
无法解决,请添加
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
406 Not Acceptable
状态码意味着 Spring 无法将对象转换为 json。 你可以让你的控制器方法返回一个字符串并return json.toString();
或配置您自己的HandlerMethodReturnValueHandler
。 检查这个类似的问题Returning JsonObject using @ResponseBody in SpringMVC
您可以尝试以下获取和发布方法
@Autowired
private MuffinRepository muffinRepository;
@Test
public void testGetMethod throws Exception(){
Muffin muffin = new Muffin("Butterscotch");
muffin.setId(1L);
BddMockito.given(muffinRepository.findOne(1L)).
willReturn(muffin);
mockMvc.perform(MockMvcRequestBuilders.
get("/muffins/1")).
andExpect(MockMvcResutMatchers.status().isOk()).
andExpect(MockMvcResutMatchers.content().string("{\"id\":1, "flavor":"Butterscotch"}"));
}
//Test to do post operation
@Test
public void testPostMethod throws Exception(){
Muffin muffin = new Muffin("Butterscotch");
muffin.setId(1L);
BddMockito.given(muffinRepository.findOne(1L)).
willReturn(muffin);
mockMvc.perform(MockMvcRequestBuilders.
post("/muffins")
.content(convertObjectToJsonString(muffin))
.contentType(MediaType.APPLICATION_JSON)
.accept(MediaType.APPLICATION_JSON))
.andExpect(MockMvcResutMatchers.status().isCreated())
.andExpect(MockMvcResutMatchers.content().json(convertObjectToJsonString(muffin)));
}
如果响应为空,请确保覆盖存储库正在使用的Entity
上的equals()
和hashCode()
方法:
//Converts Object to Json String
private String convertObjectToJsonString(Muffin muffin) throws JsonProcessingException{
ObjectWriter writer = new ObjectWriter().writer().withDefaultPrettyPrinter();
return writer.writeValueAsString(muffin);
}
有两种方法可以检查 JSON 响应。 让我引导您完成这两个,(从上面的问题中采用测试方法,并假设响应{"data":[{"useRegEx":"false","hosts":"v2v2v2"}]}
如上所述)
方法 1) 断言完整的 JSON
@Test
public final void testAlertFilterView() {
mockMvc.perform(get("/getServerAlertFilters/v2v2v2/")
.contentType("application/json"))
.andExpect(status().isOk())
// you may even read bigger json responses from file and convert it to string, instead of simply hardcoding it in test class
.andExpect(content().json("{"data":[{"useRegEx":"false","hosts":"v2v2v2"}]}"))
}
方法2)断言响应的特定键值(不编写冗余代码)
.andExpect(jsonPath("$.data[0].useRegEx").value(false))
.andExpect(jsonPath("$.data[0].hosts").value("v2v2v2"));
您可能需要的另一件事是导入语句,
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
如果要检查 JSON 特定字段中的一些值
.andExpect(MockMvcResultMatchers.jsonPath("$.message",
AllOf.allOf(
StringContains.containsString("name: must not be null"),
StringContains.containsString("type: must not be null")
)));
它在测试类中的外观。 JUnit4。
import com.fasterxml.jackson.databind.ObjectMapper;
import org.hamcrest.core.AllOf;
import org.hamcrest.core.StringContains;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.MockitoAnnotations;
import org.mockito.junit.MockitoJUnitRunner;
import org.springframework.data.web.PageableHandlerMethodArgumentResolver;
import org.springframework.http.MediaType;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
@RunWith(MockitoJUnitRunner.class)
public class YourControllerTest {
@Mock
private YourService service;
private MockMvc mvc;
@Before
public void setUp() {
MockitoAnnotations.initMocks(this);
mvc = MockMvcBuilders
.standaloneSetup(new YourController(service))
.setControllerAdvice(new YourExceptionHandler())
.setCustomArgumentResolvers(new PageableHandlerMethodArgumentResolver())
.build();
}
@Test
public void yourControllerMethodName_400_validation() throws Exception {
String path = "/orders/{orderId}/items";
Integer orderId = 123;
YourRequestDto requestDto = YourTestFactory.buildYourRequestDto();
requestDto.setName(null);
requestDto.setType(null);
YourResponseDto expected = YourTestFactory.buildYourResponseDto(requestDto);
Mockito
.when(service.someMethod(orderId, requestDto))
.thenReturn(expected);
mvc
.perform(
MockMvcRequestBuilders.post(path, orderId)
.contentType(MediaType.APPLICATION_JSON)
.content(new ObjectMapper().writeValueAsString(requestDto))
)
.andExpect(MockMvcResultMatchers.status().isBadRequest())
.andExpect(MockMvcResultMatchers.jsonPath("$.message",
AllOf.allOf(
StringContains.containsString("name: must not be null"),
StringContains.containsString("type: must not be null")
)));
}
}
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