Java 用mockito对弹簧靴进行单元测试

所以我在这里搜索了所有相关的问题，没有找到对我有用的答案。说到这里，我正试图用Mockito对我的spring boot应用程序进行单元测试

这是我的控制器和我要测试的功能

@RestController
public class UserController {

   @Autowired
   UserRepository userRepository;


   @GetMapping("/user")
   public List<User> getAllUsers() {
       return userRepository.findAll();
   }

   @GetMapping("/user/{id}")
   public User getUser(@PathVariable Integer id) {
       return userRepository.findById(id).get();
   }

所以首先，当我运行这个程序时，我得到以下错误

java.lang.AssertionError: Content type not set

    at org.springframework.test.util.AssertionErrors.fail(AssertionErrors.java:37)
    at org.springframework.test.util.AssertionErrors.assertTrue(AssertionErrors.java:70)
    at org.springframework.test.util.AssertionErrors.assertNotNull(AssertionErrors.java:106)
    at org.springframework.test.web.servlet.result.ContentResultMatchers.lambda$contentTypeCompatibleWith$1(ContentResultMatchers.java:103)
    at org.springframework.test.web.servlet.MockMvc$1.andExpect(MockMvc.java:196)
    at eldercare.RESTapi.controller.UserControllerTest.getUserTest(UserControllerTest.java:57)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
    at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)

正在打印以下数据

MockHttpServletResponse:
           Status = 200
    Error message = null
          Headers = []
     Content type = null
             Body = 
    Forwarded URL = null
   Redirected URL = null
          Cookies = []

我已经测试过在控制器中放置

@ResponseBody

没有任何区别。我还测试了其他post

@RequestMapping（value=“/user/{id}”，method=RequestMethod.GET，products=MediaType.APPLICATION\u JSON\u value）

中所述的不起作用的测试，但仍然会得到相同的错误

---

如果我没有这个检查

.andExpect（content（）.contentTypeCompatibleWith（“application/json”）

，那么我会得到一个错误，声明

java.lang.AssertionError:json路径“$.role”

，我认为你应该模拟用户存储库，而不是用户控制器。

否，模拟存储库给我状态错误，因为那里没有这样的url。。。。。我必须模拟控制器才能工作，只是它不断抱怨内容类型没有设置……如果你模拟控制器，你是在测试模拟，而不是你的实现。您需要自动连接控制器，以便获得由设置创建的bean，而不是模拟。

MockHttpServletResponse:
           Status = 200
    Error message = null
          Headers = []
     Content type = null
             Body = 
    Forwarded URL = null
   Redirected URL = null
          Cookies = []