验证器在测试期间没有被调用

Question

Annotation for my ConstraintValidator implementation is defined as PARAMETER

@Target({PARAMETER, ANNOTATION_TYPE, TYPE_USE})

During the test Validator is not being called at all, but if I change annotation target to FIELD then Validator is starting to get called. How should approach testing annotation with target set as PARAMETER ?

This is my test case

public class ExecutionRequestValidatorTest_Local extends BaseValidatorTest {
    private static Validator validator;

    @BeforeAll
    public void init() {
        ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
        validator = factory.getValidator();

        executionRequestInstance = ExecutionRequestInstance.builder().build();
    }


    @Test
    void isValid(){
        final Set<ConstraintViolation<Tester>> validate = validator.validate(new Tester(executionRequestInstance));
    }

    private class Tester {
        private final ExecutionRequestInstance requestInstance;

        public Tester(ExecutionRequestInstance requestInstance){
            this.requestInstance = requestInstance;
            test(requestInstance);
        }
        public void test(@ValidateExecutionRequest ExecutionRequestInstance request){

        }
    }
}

Answer 1

I made the tests work by adding annotation to class variable

private class Tester {
        @ValidateExecutionRequest <----- NEW
        private final ExecutionRequestInstance requestInstance;

        public Tester(ExecutionRequestInstance requestInstance){
            this.requestInstance = requestInstance;
            test(requestInstance);
        }
        public void test(@ValidateExecutionRequest ExecutionRequestInstance request){

        }
    }

But why does this work? With parameter annotation as in test() method the real application works, although not being called via validate() method, but just by framework calling isValid().