带注释的JUnit测试

Question

Hey all I am trying to get these Unit tests to fail but can't it uses annotations, which is new to me. Any ideas would be great!

I have been trying all sorts of ways to get them to fail by either setting the test class variables to null, or trying to use if/else statements in the minimum test, but they always come out passing. Is this correct?

public class ValidationServiceTest extends BaseServiceTest {
    ValidationService validationService;
    ValidationException ve;
    TestDto test;
    Field f;

    @Before
    public void setup() {
        validationService = new ValidationService();
        ve = null;
    }

    @Test
    public void validateNotNull(){
        try {
            validationService.validate(ve, test.xx);
            assertNotNull("testing notNull()", ve);
        } catch (Exception e) {
        }
    }

    @Test
    public void validateMin(){
        try {
            validationService.validate(ve, test.xy);
            if(test.xy > f.min()){
                assertTrue("testing min()" , test.xy > -1);
            }
        } catch (Exception e) {
        }
    }

    public class TestDto{
        @Field(notNull=true)
        public Integer xx = null;
        @Field(min=2)
        public Integer xy = -5;
    }
}

Answer 1

Do not catch Exception, mark test method with throws Exception instead.

The test field is never initialized in your test, which means it's null . This causes NullPointerException whenever you try to access fields of test . The assertion line is skipped and exception is suppressed in the catch clause. Removing the try/catch block and marking test method with throws Exception instead will cause the test to report error and you will see what's wrong instantly.