JUnit单元测试
一.JUnit介绍
JUnit是Java中最有名的单元测试框架，用于编写和运行可反复的测试，少数Java的开发环境都曾经集成了JUnit作为单元测试的工具。好的单元测试能极大的进步开发效率和H5游戏。
测试类命名规定：被测试类+Test，如UserServiceTest
测试用例命名规定：test+用例办法，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
创立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的配置文件门路
@ContextConfiguration(locations = {"classpath*:/spring/applicationContext.xml"})
// 测试类开启事务,须要指定事务管理器,默认测试实现后,数据库操作主动回滚
@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);@Resourceprivate UserService userService;@Testpublic void testGet() {    UserDO userDO = userService.get(1);    Assert.assertNotNull(userDO);    LOGGER.info(userDO.getUsername());    // 减少验证断言    Assert.assertEquals("testGet faield", "Google", userDO.getUsername());}

}