如何使用Spring autowiring泛化JMockit测试

Question

因此，我想对一些不同的Dao方法使用一个通用测试。在Dao内部，我实现了与实体无关的save功能，因此我认为最好也使测试实体独立。目前，我有一个jmockit测试，它是与Spring一起autowired的。

@Injectable
public EntityManager em;

@Tested
SyncClaimDao syncClaimDao = new SyncClaimDaoImpl();

@Before
public void setUp() {
    Deencapsulation.setField(syncClaimDao, "em", em);
}

private void testSaveEntity (Class T) {
    // Existing claim happy path
    new Expectations() {
        {
            em.contains(any); result = true;
            em.merge(any);
        }
    };

    if (T.isInstance(SyncClaimEntity.class)) {
        Assert.assertTrue(syncClaimDao.saveClaim(new SyncClaimEntity()));
    } else if (...) {...}
}

@Test
public void testSaveClaim() {
    testSaveEntity(SyncClaimEntity.class);
}

Syncclaimdaoimpl

@Override
public boolean saveClaim(SyncClaimEntity claim) {
    return saveEntity(claim);
}

private boolean saveEntity(Object entity) {
    boolean isPersisted = false;

    try {
        isPersisted = em.contains(entity);

        if (isPersisted) {
            em.merge(entity);
        } else {
            em.persist(entity);
            em.flush();
            isPersisted = true;
        }
        logger.debug("Persisting " + entity.getClass().getSimpleName() + ": " + entity.toString());
    }
    catch (NullPointerException ex) {
        ...
    }
    catch (IllegalArgumentException ex) {
        ...
    }

    return isPersisted;
}

mockit.internal.MissingInvocation: Missing invocation of:
javax.persistence.EntityManager#contains(Object)
   with arguments: any Object
   on mock instance: javax.persistence.$Impl_EntityManager@44022631
    at at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    ... 4 more 
Caused by: Missing invocation
    at [redacted].dal.dao.SyncClaimDaoImplTest$1.<init>(SyncClaimDaoImplTest.java:48)
    at [redacted].dal.dao.SyncClaimDaoImplTest.testSaveEntity(SyncClaimDaoImplTest.java:46)
    at [redacted].dal.dao.SyncClaimDaoImplTest.testSaveClaim(SyncClaimDaoImplTest.java:67)
    ... 10 more

@Test
public void testSaveClaim() {

    new Expectations() {
        {
            em.contains(any); result = true;
            em.merge(any);
        }
    };

    Assert.assertTrue(syncClaimDao.saveClaim(new SyncClaimEntity()));

Answer 1

我现在看到了错误:t.isinstance(SyncClaimentity.class)。类#isinstance(Object)方法应该用类的实例调用，而不是用类本身调用；因此，它总是返回false，因为SyncClaimEntity.class显然不是SyncClaimEntity的实例。