JUnit单元测试

一.JUnit介绍

JUnit是Java中最有名的单元测试框架，用于编写和运行可重复的测试，多数Java的开发环境都已经集成了JUnit作为单元测试的工具。好的单元测试能极大的提高开发效率和H5游戏。

测试类命名规则：被测试类+Test，如UserServiceTest
测试用例命名规则：test+用例方法，如testGet

Maven导入junit、sprint-test 

    <dependencies>
        <!-- Test Unit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>4.3.10.RELEASE</version>
            <scope>test</scope>
        </dependency>
        <!-- Json断言测试 -->
        <dependency>
            <groupId>com.jayway.jsonpath</groupId>
            <artifactId>json-path</artifactId>
            <version>2.4.0</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <!-- 单元测试插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.20</version>
                <dependencies>
                    <dependency>
                        <groupId>org.apache.maven.surefire</groupId>
                        <artifactId>surefire-junit4</artifactId>
                        <version>2.20</version>
                    </dependency>
                </dependencies>
                <configuration>
                    <!-- 是否跳过测试 -->
                    <skipTests>false</skipTests>
                    <!-- 排除测试类 -->
                    <excludes>
                        <exclude>**/Base*</exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

 

二.Service层测试示例

创建Service层测试基类，新建BaseServiceTest.java

// 配置Spring中的测试环境
@RunWith(SpringJUnit4ClassRunner.class)
// 指定Spring的配置文件路径
@ContextConfiguration(locations = {"classpath*:/spring/applicationContext.xml"})
// 测试类开启事务,需要指定事务管理器,默认测试完成后,数据库操作自动回滚
@Transactional(transactionManager = "transactionManager")
// 指定数据库操作不回滚,可选
@Rollback(value = false)
public class BaseServiceTest {
}

测试UserService类，新建测试类UserServiceTest.java

public class UserServiceTest extends BaseServiceTest {

    private static final Logger LOGGER = LoggerFactory.getLogger(UserServiceTest.class);

    @Resource
    private UserService userService;

    @Test
    public void testGet() {
        UserDO userDO = userService.get(1);

        Assert.assertNotNull(userDO);
        LOGGER.info(userDO.getUsername());

        // 增加验证断言
        Assert.assertEquals("testGet faield", "Google", userDO.getUsername());
    }
}