java - 我的 Junit 测试给出了 java.lang.NullPointerException

Question

这是测试类，它最初运行得很好，但是在修复了 javax 验证的一些错误之后，它开始给出错误

**实际上我是 JUnit 测试的新手，对我遇到的这个错误感到非常困惑。错误，空指针异常。请我很感激我有些可以引导我解决问题**

    @RunWith(SpringJUnit4ClassRunner.class)
    @SpringBootTest
    class NhSystemApplicationTests {

        @Autowired
        private UserService userService;

        @Autowired
        private TaskService taskService;

    @Before(value = "")
    public void initDb() {
        {
        User newUser = new User("[e-mail]", "testUser", "****");
        userService.createUser(newUser);
        }

        {
        User newUser = new User("[e-mail]", "testUser", "*****");
        userService.createUser(newUser);
        }

        Task userTask = new Task("02/01/2018", "00:11", "11:00", "You need to work Today");
        User user = userService.findOne("[e-mail]");
        taskService.addTask(userTask, user);  
    }

    @Test
    public void testUser() {

        User user = userService.findOne("[e-mail]");
        assertNotNull(user);
        User admin= userService.findOne("[e-mail]");
        assertEquals(admin.getEmail(), "[e-mail]");
    }

    @Test
    public void testTask() {
        User user = userService.findOne("[e-mail]");
        List<Task> task = taskService.findUserTask(user);
        assertNotNull(task);
    }

    }

这是错误 java.lang.NullPointerException 的图像

标签： javamaventestingjunit