单元测试应用示例——测试标签库

AdSumQueryTag?.java是后台查询推广来源统计结果的业务逻辑标签处理程序。

/**
 * 
 * @author ChenYang
 * Date: 2012-2-1
 */
public class AdSumQueryTag extends BaseTagSupport<AdService> {
        
        private String items;
        
        public void setItems(String items) {
                this.items = items;
        }

        @Override
        public int doStartTag() throws JspException {
                
                HttpServletRequest request = this.getHttpServletRequest();
                
                if(StringUtils.isBlank(request.getParameter("gid"))){
                        throw new RuntimeException("没有选择游戏");
                }
                
                if(StringUtils.isBlank(request.getParameter("startdate"))){
                        throw new RuntimeException("没有选择开始时间");
                }
                
                if(StringUtils.isBlank(request.getParameter("enddate"))){
                        throw new RuntimeException("没有选择结束时间");
                }
                
                long gameid = Long.parseLong(request.getParameter("gid"));
                
                Date start = null;
                Date end = null;
                try {
                        start = DateUtils.parseDate(request.getParameter("startdate"), new String[]{"yyyy-MM-dd"});
                        String enddate = request.getParameter("enddate");
                        enddate = enddate + " 23:59:59 999";
                        
                        end = DateUtils.parseDate(enddate, new String[]{"yyyy-MM-dd HH:mm:ss SSS"});
                } catch (ParseException e) {
                        e.printStackTrace();
                }
                AdService adService = this.getBean("adService");
                List<AdSum> list = adService.findByCondi(gameid, start, end);
                
                this.pageContext.setAttribute(items, list);
                
                return Tag.SKIP_BODY;
        }
        
}

该标签依赖的ApplicationContext对象，可以通过继承AbstractTransactionalJUnit4SpringContextTests获得,HttpServletRequest对象和pageContext对象可以通过Spring测试框架提供的模拟对象来模拟。 测试代码如下:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:applicationContext.xml" })
public class AdSumQueryTagTest extends AbstractTransactionalJUnit4SpringContextTests{
        
        @Test
        public void doStartTag() throws Exception {
                
                AdSumQueryTag adSumQueryTag = new AdSumQueryTag();
                adSumQueryTag.setApplicationContext(applicationContext);
                adSumQueryTag.setItems("items");
                
                //模拟HttpServletRequest
                MockHttpServletRequest request = new MockHttpServletRequest();
                
                //模拟查询条件
                request.addParameter("gid", "1");
                request.addParameter("startdate", "2012-02-08");
                request.addParameter("enddate", "2012-02-08");
                
                //模拟pageContext
                MockPageContext pageContext = new MockPageContext();
                
                adSumQueryTag.setHttpServletRequest(request);
                adSumQueryTag.setPageContext(pageContext);
                
                adSumQueryTag.doStartTag();
                
        }
}