总是entityManager = null

Question

我不能在单元测试中测试entityManager

@PersistenceContextprivate EntityManager entityManager；

总是entityManager = null

@Repository
public class IRepositoryImpl {

@PersistenceContext
    private EntityManager entityManager;
public I findI(){
        CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
....
}
....
}

单元测试：

private IRepositoryImpl iRepositoryImpl ;

@Test
void findITest(){
     I i = iRepositoryImpl.findI();
...
}

java.lang.NullPointerException entityManager =空

Answer 1

您需要在单元测试类中添加以下内容：

    import org.springframework.boot.test.context.SpringBootTest;
    import org.springframework.test.context.junit4.SpringRunner;
    
    @RunWith(SpringRunner.class)
    @SpringBootTest(classes = SpringBootApplicationClass.class) //annotation when you need Spring Boot features