unit-test-exception-handler

This skill provides patterns for unit testing @ExceptionHandler methods and @ControllerAdvice classes using MockMvc. It covers testing exception-to-error-response transformations, HTTP status codes, error message formatting, validation error handling, and custom permission evaluators without full integration test overhead.

Exception handler not invoked: Ensure controller is registered with MockMvc and actually throws the exception.

JsonPath matchers not matching: Use .andDo(print()) to see actual response structure.

提供單元測試 @ExceptionHandler 和 @ControllerAdvice 的模式以進行全域異常處理。在驗證錯誤回應格式和 HTTP 狀態碼時使用。 來源：giuseppe-trisciuoglio/developer-kit。