我需要为@RestControllerAdvice类编写junit测试用例

Question

我需要为用@RestControllerAdvice注释的类编写一个JUnit测试用例。尝试了一下，但是我遇到了一个错误

org.mockito.exceptions.misusing.MissingMethodInvocationException： when（）需要一个参数，该参数必须是“模拟的方法调用”。 例如：     when（mock.getArticles（））。thenReturn（articles）;

@RestControllerAdvice
public class GlobalExceptionHandler {
@ExceptionHandler({NumberFormatException.class, NoHandlerFoundException.class})
    public ResponseEntity<ExceptionJSONInfo> handleGenericException(HttpServletRequest request, Exception ex) {
        ExceptionJSONInfo empExce = new ExceptionJSONInfo();
        empExce.setMessage(ex.getMessage().trim());
        empExce.setUrl(request.getRequestURL().toString());
        empExce.setStatusCode(HttpStatus.BAD_REQUEST.toString());
        return ResponseEntity.badRequest().body(empExce);   
    }
}

@Data
public class ExceptionJSONInfo {

    private String url;
    private String statusCode;
    private String message;

}

我尝试过

@RunWith(MockitoJUnitRunner.class)
public class GlobalExceptionHandlerTest {

    MockHttpServletRequest request; 

    Exception exception;

    @InjectMocks
    GlobalExceptionHandler gitService= new GlobalExceptionHandler();        
    ExceptionJSONInfo empExce = new ExceptionJSONInfo();

    @Before
    public void setUp() {

     request = new MockHttpServletRequest("GET","http://localhost:7777/rest/v1/gitrepo/ff");        
     exception =  new Exception("Failed to convert value of type 'java.lang.String' to required type 'int'; "
            + " nested exception is java.lang.NumberFormatException: For input string: \\\"ff\\\"");

            empExce.setMessage(exception.getMessage().trim());
            empExce.setUrl(request.getRequestURL().toString());
            empExce.setStatusCode(HttpStatus.BAD_REQUEST.toString());
    }


    @Test
    public void test() {

        when(gitService.handleGenericException(request, exception)).thenReturn(ResponseEntity.badRequest().body(empExce));  
        ResponseEntity<ExceptionJSONInfo> result = gitService.handleGenericException(request, exception);
        assertEquals(HttpStatus.BAD_REQUEST.toString(),result.getBody().getStatusCode());
    }


}