如何为CDI编写Junit测试用例？

我想为cdi编写测试用例.我在我的dao中使用了@inject.任何人都可以帮我如何为cdi编写测试用例.我尝试了下面的代码.但它不起作用.请帮我.

public class StudentTest {

    StudentService stuService;

    StudentDAO stuDAO;

    StudentVO stuVo;

    @Before
    public void setUp() throws Exception {

        System.out.println("In Setup");

        stuVo=new StudentVO ();

        stuService=new StudentService();

        stuDAO=Mockito.mock(StudentDAO.class);

        stuVo.setStudId("123");

        stuVo.setName("user1");

        Mockito.when(stuDAO.getStudent(stuVo.getStuId())).thenReturn(student);
    }

    @Test
    public void getStudent() throws DataAccessException {

        StudentVO stVO=stuService.getStudent(123);

        Assert.assertEquals("123", stVO.getStuId());
    }
}

我的服务类是

public class StudentService {

    @Inject
    StudentDAO stuDao;

    public StudentVo getStudent(String id){

        return stuDao.getStudent(id);

    }

}

在失败时跟踪它只是显示为“java.lang.NullPointerException

 at com.stu.StudentService.getStudent(StudentService.java:104)
 at com.stu.junit.POCJunit.getgetStudent(StudentTest.java:21)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:606)
 at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
 at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
 at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
 at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
 at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)...

解决方法:

我通过下面的代码解决了它

@Mock
StudentDAO stuDAO;

@InjectMocks
StudentService stuService;

And in setUp() method I have written

MockitoAnnotations.initMocks(this);

标签：java,junit,cdi,junit4
来源： https://codeday.me/bug/20190830/1767376.html