使用Spring Boot Test進行錯誤測試

Question

我正在嘗試對我的服務執行簡單的單元測試。我的測試類的代碼如下：

@RunWith(SpringRunner.class) 
@SpringBootTest 
public class UserServiceTest { 

    @Mock 
    private UserRepository userRepoMock; 
    private UserService userService; 
    private List<User> users; 

    @Before 
    public void setUp() throws Exception { 
     userService = new UserService(userRepoMock); 

     User u1 = new User(); 
     u1.setEmail("test@test.com"); 
     User u2 = new User(); 
     u2.setEmail("test2@test.com"); 
     users = Arrays.asList(u1, u2); 
    } 

    @Test 
    public void getAll() throws Exception { 
     when(userRepoMock.findAll()).thenReturn(users); 

     List<UserDTO> all = userService.getAll(new PageRequest(0, 20)); 
     verify(userRepoMock).findAll(); 
    } 
} 

當執行測試，我總是得到一個例外，這是一個摘錄：

java.lang.IllegalStateException: Failed to load ApplicationContext 
    ... 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'requestMappingHandlerAdapter' defined in class path resource [org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter]: Factory method 'requestMappingHandlerAdapter' threw exception; nested exception is java.lang.NoClassDefFoundError: net/minidev/json/writer/JsonReaderI 
    ... 
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter]: Factory method 'requestMappingHandlerAdapter' threw exception; nested exception is java.lang.NoClassDefFoundError: net/minidev/json/writer/JsonReaderI 
    ... 
Caused by: java.lang.NoClassDefFoundError: net/minidev/json/writer/JsonReaderI 
    ... 
Caused by: java.lang.ClassNotFoundException: net.minidev.json.writer.JsonReaderI 
    ... 

什麼是錯在我的代碼？我是否應該包含一些不包含在spring-boot-starter-test中的依賴項？

注意我使用Spring Boot v 1.5.1和Spring Data MongoDB存儲庫。

Answer 1

你使用json-smart-v2？

在那裏，你可以看到你的異常類存在： Github link

你有可能是錯誤的版本，或者一些不正確的依賴關係。