单元测试（二）——Junit4+EasyMock创建单元测试

时间 2019-11-07

标签单元测试 junit4+easymock junit easymock 创建栏目 Java 繁體版

原文原文链接

添加依赖

pom.xmljava

<dependency>
	<groupId>junit</groupId>
	<artifactId>junit</artifactId>
	<version>4.12</version>
	<scope>test</scope>
</dependency>
<dependency>
	<groupId>org.easymock</groupId>
	<artifactId>easymock</artifactId>
	<version>3.1</version>
	<scope>test</scope>
</dependency>

注意依赖scope设置为test，项目打包将忽略test依赖。缓存

测试实现类

BizRefApi.java多线程

@Slf4j
	@RestController
	@RequestMapping("bizRefApi/")
	public class BizRefApi {
		/**
		 * 业务处理接口 <br>
		 */
		@Resource
		private BizRefService bizRefService;

		/**
		 * 业务缓存处理接口 <br>
		 */
		@Resource
		private BizRefCacheService bizRefCacheService;
		/**
		 * Description: 新增业务关联<br>
		 * 
		 * @author xubin<br>
		 * @taskId <br>
		 * @param addBizRefReq 新增请求参数
		 * @param request HttpServletRequest
		 * @return <br>
		 */
		@PostMapping(value = "/addBizRef")
		public String addBizRef(@RequestBody AddBizRefReq addBizRefReq, HttpServletRequest request) {
			try {
				ValidateUtil.validate(addBizRefReq);
			} catch (Exception e) {
				log.error("addBizRef fail, param : {}, exception : {}", addBizRefReq.toString(), e.getMessage());
				return JsonUtil.getErrorJson(WebConstant.PARAM_EXCEPTION);
			}
			BizRefBO bizRefBO = new BizRefBO();
			BeanUtils.copyProperties(addBizRefReq, bizRefBO);
			bizRefBO.setAppKey(request.getHeader(CommonConstant.APP_KEY));
			bizRefService.save(bizRefBO);
			return JsonUtil.getSucc(WebConstant.OPER_SUCC);
		}
		/**
		 * Description: 查询单个设备对应业务模块的关联对象id<br>
		 * 
		 * @author xubin<br>
		 * @taskId <br>
		 * @param queryBizIdReq 请求参数对象
		 * @param request HttpServletRequest
		 * @return <br>
		 */
		@PostMapping(value = "/v2/queryBizIdSet")
		public String queryBizIdSet(@RequestBody QueryBizIdByDeviceCodeReq queryBizIdReq, HttpServletRequest request) {
			try {
				ValidateUtil.validate(queryBizIdReq);
			} catch (Exception e) {
				log.error("queryBizIdSet fail, param : {}, exception : {}", queryBizIdReq.toString(), e.getMessage());
				return JsonUtil.getErrorJson(WebConstant.PARAM_EXCEPTION);
			}
			Set<String> resList = bizRefCacheService.queryBizIdByDeviceCode(request.getHeader(CommonConstant.APP_KEY), queryBizIdReq.getDeviceCode(),
					queryBizIdReq.getModuleCode());
			return JsonUtil.getSucc4data(resList);
		} 
		/**
		 * set bizRefService
		 * 
		 * @param bizRefService The bizRefService to set. <br>
		 */
		public void setBizRefService(BizRefService bizRefService) {
			this.bizRefService = bizRefService;
		}

		/**
		 * set bizRefCacheService
		 * 
		 * @param bizRefCacheService The bizRefCacheService to set. <br>
		 */
		public void setBizRefCacheService(BizRefCacheService bizRefCacheService) {
			this.bizRefCacheService = bizRefCacheService;
		}

实现类的具体机制不作赘述，此篇主要说下用EasyMock作单元测试，须要注意的是，在实现类里须要对注入的对象（bizRefService 、bizRefCacheService ）设置setter方法，用于后面执行单元测试。app

单元测试Case

public class TestBizRefApi {

		/**
		 * Description: 测试添加业务关联<br>
		 * 
		 * @author xubin<br>
		 * @taskId <br>
		 *         <br>
		 */
		@Test
		public void testAddBizRef() {
			// 1.正常执行
			//模拟vo请求参数
			BizRefService bizRefServiceMock = EasyMock.createMock(BizRefService.class);
			HttpServletRequest requestMock = EasyMock.createMock(HttpServletRequest.class);
			bizRefApi.setBizRefService(bizRefServiceMock);
			// 被mock的方法无返回值（void），有返回值须要设置EasyMock.expect指望值
			bizRefServiceMock.save(EasyMock.anyObject());
			// 设置mock对象调用方法指望值
			EasyMock.expect(requestMock.getHeader(CommonConstant.APP_KEY)).andReturn("");
			// 激活mock对象
			EasyMock.replay(bizRefServiceMock);
			EasyMock.replay(requestMock);
			// 执行目标测试方法
			String resJsonStr = bizRefApi.addBizRef(addBizRefReq, requestMock);
			// 校验执行结果
			TestCase.assertEquals(WebConstant.OPER_SUCC, JSONObject.parseObject(resJsonStr).getJSONArray("resMsg").getJSONObject(0).getString("msgCode"));
			// 校验mock对象执行状态
			EasyMock.verify(bizRefServiceMock, requestMock);
			// 2.出现参数异常
			addBizRefReq = new AddBizRefReq();
			// 重置mock对象，须要从新设置mock对象的参数时调用
			// EasyMock.reset(bizRefServiceMock);
			// EasyMock.reset(requestMock);
			resJsonStr = bizRefApi.addBizRef(addBizRefReq, requestMock);
			TestCase.assertEquals(WebConstant.PARAM_EXCEPTION,
					JSONObject.parseObject(resJsonStr).getJSONArray("resMsg").getJSONObject(0).getString("msgCode"));
			EasyMock.verify(bizRefServiceMock, requestMock);
		}

		/**
		 * Description: 测试根据设备编码查询业务id集合<br>
		 * 
		 * @author xubin<br>
		 * @taskId <br>
		 *         <br>
		 */
		@Test
		public void testQueryBizIdSet() {
			// 1.正常执行
			QueryBizIdByDeviceCodeReq queryBizIdReq = new QueryBizIdByDeviceCodeReq();
			queryBizIdReq.setDeviceCode("222");
			queryBizIdReq.setModuleCode("faceset");
			BizRefApi bizRefApi = new BizRefApi();
			BizRefCacheService bizRefCacheServiceMock = EasyMock.createMock(BizRefCacheService.class);
			HttpServletRequest requestMock = EasyMock.createMock(HttpServletRequest.class);
			bizRefApi.setBizRefCacheService(bizRefCacheServiceMock);
			EasyMock.expect(requestMock.getHeader(CommonConstant.APP_KEY)).andReturn("");
			Set<String> resSet = Sets.newHashSet();
			resSet.add("1");
			EasyMock.expect(bizRefCacheServiceMock.queryBizIdByDeviceCode(EasyMock.anyObject(), EasyMock.anyObject(), EasyMock.anyObject()))
					.andReturn(resSet);
			EasyMock.replay(bizRefCacheServiceMock);
			EasyMock.replay(requestMock);
			String resJsonStr = bizRefApi.queryBizIdSet(queryBizIdReq, requestMock);
			TestCase.assertEquals(1, JSONObject.parseObject(resJsonStr).getJSONArray("resData").size());
			EasyMock.verify(bizRefCacheServiceMock, requestMock);
			// 2.出现参数异常
			queryBizIdReq = new QueryBizIdByDeviceCodeReq();
			resJsonStr = bizRefApi.queryBizIdSet(queryBizIdReq, requestMock);
			TestCase.assertEquals(WebConstant.PARAM_EXCEPTION,
					JSONObject.parseObject(resJsonStr).getJSONArray("resMsg").getJSONObject(0).getString("msgCode"));
			EasyMock.verify(bizRefCacheServiceMock, requestMock);
		}

经常使用到的EasyMock方法：
EasyMock.createMock：新建mock对象
EasyMock.expect(m).andReturn(v)：设置m方法执行指望返回值为v
EasyMock.expect(m).andThrow(Throwable throwable)：设置m方法执行抛出异常
EasyMock.replay：激活mock对象
EasyMock.verify：校验mock对象是否执行
EasyMock.reset：重置mock对象eclipse

单元测试覆盖率

笔者使用eclipse插件EclEmma查看单元测试覆盖率单元测试

用插件运行单元测试：

在测试类中能够看到覆盖状况，绿色表示被覆盖，红色表示未被覆盖到：