java单元测试

版本区别

测试注解的作用

@RunWith(SpringRunner.class)
@org.springframework.boot.test.context.SpringBootTest
@ContextConfiguration(classes = MyCommunityApplication.class)
public class SpringBootTest {

    @Autowired
    private DiscussPostService discussPostService;

    private DiscussPost data;

    @BeforeClass
    public static void beforeAll() {
        System.out.println("beforeClass");
    }

    @AfterClass
    public static void afterAll() {
        System.out.println("afterClass");
    }

    @Before
    public void before() {
        System.out.println("before");
    }

    @After
    public void after() {
        System.out.println("after");
    }

    @Test
    public void test1(){
        System.out.println("test1");
    }

    @Test
    public void test2(){
        System.out.println("test2");
    }
}
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执行test1，可以看到

打印的顺序是beforeClass、before、test1、after、afterClass，这也是。
一般单元测试是直接运行整个测试类，然后查看哪个测试方法有错误，如：

全部通过：

实际项目的样例

@RunWith(SpringRunner.class)
@org.springframework.boot.test.context.SpringBootTest
@ContextConfiguration(classes = MyCommunityApplication.class)
public class SpringBootTest {

    @Autowired
    private DiscussPostService discussPostService;

    private DiscussPost data;

    @BeforeClass
    public static void beforeAll() {
        System.out.println("beforeClass");
    }

    @AfterClass
    public static void afterAll() {
        System.out.println("afterClass");
    }

    @Before
    public void before() {
        System.out.println("before");

        // initialize
        data = new DiscussPost();
        data.setUserId(111);
        data.setId(287);
        data.setTitle("Test title");
        data.setContent("Test content");
        data.setCreateTime(new Date());
        discussPostService.addDiscussPost(data);
        System.out.println(data.getId());
    }

    @After
    public void after() {
        System.out.println("after");

        // delete
        discussPostService.updateStatus(data.getId(), 2);
    }

    @Test
    public void testFindById(){
        DiscussPost discussPost = discussPostService.findDiscussPostById(data.getId());
        Assert.assertNotNull(discussPost);
        Assert.assertEquals(discussPost.getTitle(), data.getTitle());
        Assert.assertEquals(discussPost.getContent(), data.getContent());
    }

    @Test
    public void testUpdateScore() {
        int rows = discussPostService.updateScore(data.getId(), 2000.00);
        Assert.assertEquals(1, rows);

        DiscussPost post = discussPostService.findDiscussPostById(data.getId());
        Assert.assertEquals(2000.00, post.getScore(), 2);
    }
}
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测试未通过：