Spring ExceptionalHandler 的 Java 测试

Question

我有一个带有 Controller 和服务的 springboot 项目。还有像 GlobalExceptionHandler 这样的 -

public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {
 @ExceptionHandler(DataIntegrityViolationException.class)
  public ResponseEntity<Object> handle(DataIntegrityViolationException e, WebRequest request) {
    ....

     String requestPath = ((ServletWebRequest)request).getRequest().getRequestURI();

    // I am using this requestPath in my output from springboot
   ...

  }
}

有人可以告诉我如何在我的单元测试类中编写模拟吗 ((ServletWebRequest)request).getRequest().getRequestURI()

Answer 1

不幸的是，Mockito 中不支持 subbing final方法。您可以使用其他模拟框架，例如 PowerMock。

在这种情况下，我更喜欢消除使用 protected 方法进行模拟的需要:

public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {

    @ExceptionHandler(DataIntegrityViolationException.class)
    public ResponseEntity<Object> handle(final DataIntegrityViolationException e, final WebRequest request) {

        final String requestPath = getRequestUri(request);

        return ResponseEntity.ok().body(requestPath);
    }

    protected String getRequestUri(final WebRequest request) {
        return ((ServletWebRequest) request).getRequest().getRequestURI();
    }
}

测试中的匿名类:

public class GlobalExceptionHandlerTests {

    private final GlobalExceptionHandler handler = new GlobalExceptionHandler() {
        @Override
        protected String getRequestUri(final org.springframework.web.context.request.WebRequest request) {
            return "http://localhost.me";
        };
    };

    @Test
    void test() throws Exception {

        final ResponseEntity<Object> handled = handler.handle(new DataIntegrityViolationException(""),
                null);
        assertEquals("http://localhost.me", handled.getBody());
    }
}