### Question:
PIS404ErrorMapper extends Psd2ErrorMapper<MessageError, Error404NGPIS> { @Override public HttpStatus getErrorStatus() { return HttpStatus.NOT_FOUND; }  @Override Function<MessageError, Error404NGPIS> getMapper(); @Override HttpStatus getErrorStatus();  }### Answer:
@Test void getErrorStatus_shouldReturn404() { HttpStatus errorStatus = pis404ErrorMapper.getErrorStatus(); assertEquals(HttpStatus.NOT_FOUND, errorStatus); }