Java 测试mockito junit方法不'；行不通

测试方法的问题。我有restcotroller，我想测试delete方法（选项-不应从数据库中删除对象）。 这是我在服务类中的方法：

public Optional<PersonDto> deletePerson(Long id) {
        Assert.notNull(id, "id can't be null");
        Optional<Person> personOptional = personRepository.findById(id);
        personRepository.deleteById(id);
        return personOptional.map(p -> modelMapper.map(p, PersonDto.class));
    }

此测试中的错误为：

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is com.softwaremind.crew.people.service.NoEntityFoundException: There is no Entity in database with this id.

    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982)
    at org.springframework.web.servlet.FrameworkServlet.doDelete(FrameworkServlet.java:899)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:667)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851)
    at org.springframework.test.web.servlet.TestDispatcherServlet.service(TestDispatcherServlet.java:68)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
    at org.springframework.mock.web.MockFilterChain$ServletFilterProxy.doFilter(MockFilterChain.java:166)
    at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:133)
    at org.springframework.test.web.servlet.MockMvc.perform(MockMvc.java:165)
    at com.softwaremind.crew.people.controller.PersonRestControllerTest.shouldNotDeletePersonByGivenId(PersonRestControllerTest.java:92)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: com.softwaremind.crew.people.service.NoEntityFoundException: There is no Entity in database with this id.
    at com.softwaremind.crew.people.controller.PersonRestController.deletePerson(PersonRestController.java:83)

例外类别：

public class NoEntityFoundException extends RuntimeException {
    public NoEntityFoundException() {
        super("There is no Entity in database with this id.");
    }
}

---

尝试将您的

@Test

注释更改为

@Test（expected=NoEntityFoundException.class）

据我所知，您明确地告诉Mockito抛出异常您没有在正在测试的单元中处理异常，那么您期望什么呢？是的NoEntityFoundException（）我忘了在另一个类中添加一个异常方法：@MagdalenaRumakowicz那么你的问题是什么？您的模拟调用完全按照您告诉它的方式执行。我的问题是，为什么此测试不应DeletePersonByGiveNid（）通过，以及如何修复它java.lang.Exception:意外异常，预期但was@MagdalenaRumakowicz你不是应该测试

deletePerson

方法吗？您正在调用名为

delete

的内容。您的方法是否抛出了一个

非法argumentException

？此测试方法不应从数据库中删除person。删除测试工作好。

public class NoEntityFoundException extends RuntimeException {
    public NoEntityFoundException() {
        super("There is no Entity in database with this id.");
    }
}