我想为CDI编写测试用例。在我的DAO中,我使用了@inject。有人可以帮我学习如何为CDI编写测试用例吗?我尝试了下面的代码,但它不起作用。请帮帮我。
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);
}
}
在故障跟踪中,只显示为"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)...
@Test
方法中使用Mockito.when()
吗? - Wavemaster