如何使用emma统计代码执行覆盖率

使用 emma 2.1 (emma-stable-2.1.5320-lib)

1. 新建 /home/q/java/emmalib 目录， 将emma.jar 与 emma_ant.jar 放入

2. 复制  /server/bin/mobileserver/runServer.sh  到 runServer_emma.sh
修改启动语句
nohup java -Xmx1800M -Xms800m -Xbootclasspath/p:/home/q/java/emmalib/emma.jar -Djava.nio.channels.spi.SelectorProvider=sun.nio.ch.EPollSelectorProvider -XX:+AggressiveOpts -XX:+UseParallelGC -server -classpath "$jarFile" com.qunar.common.mobileArc.MobileServer conf/TaLog.property conf/TripServer.property >> $LOG_HOME/error.log 2>&1 &

复制  /server/bin/mobileserver/stopServer.sh  到 stopServer_emma.sh
添加覆盖率导出命令

插入 emma 统计代码

使用root账号

1. 备份mobileserver.jar

cp /server/TripAssistant/mobile-server.jar $MOB_JAR_BAK/mobile-server.jar.{$timestamp}

2. 执行插入命令

    java -cp /home/q/java/emmalib/emma.jar emma instr -m overwrite -cp mobile-server.jar -out coverage.em

输出如下：
EMMA: processing instrumentation path ...
EMMA: instrumentation path processed in 3117 ms
EMMA: [1000 class(es) instrumented, 126 resource(s) copied]
EMMA: metadata merged into [/server/TripAssistant/coverage.em]

3. 运行mobileserver    runServer_emma.sh

sudo sh /server/bin/mobileserver/stopServer.sh && sudo sh /server/bin/mobileserver/runServer_emma.sh

    在 /server/mobileserverlog/error.log中可见：

EMMA: collecting runtime coverage data ...
EMMA: runtime controller started on port [47653]

emma control 进程已启动
[root@l-wap4.beta.cn1.qunar.com /server/mobileserverlog]# netstat -na | grep 47653
tcp        0      0 0.0.0.0:47653               0.0.0.0:*                   LISTEN      20926/java  

4. 执行 覆盖率文件导出命令

java -cp /home/q/java/emmalib/emma.jar emma ctl -connect localhost:47653 -command coverage.get,coverage.ec

可见输出：
EMMA: processing control command sequence ...
EMMA: executing [coverage.get (coverage.ec,true,true)] ...
EMMA: coverage.get: local copy of coverage data merged into [/server/TripAssistant/coverage.ec]

EMMA: coverage.get: command completed in 79 ms
EMMA: control command sequence complete

并且当前目录生成文件  coverage.ec

5. 生成报告

java -cp /home/q/java/emmalib/emma.jar emma report -r html -in coverage.em,coverage.ec

指定源代码生产覆盖率报告(需先上传源码)

java -cp /home/q/java/emmalib/emma.jar emma report -r html -in /server/TripAssistant/coverage.em,/server/TripAssistant/coverage.ec -Dreport.html.out.file=mycoverage/coverage.html -sp /home/liang.zhou/mob_code_dir/mobs_trunk/src/main/java

emma 方式启动 mobserver
==================================
1. 判断mobserver.jar size， 大于5M 为已插入过， 小于5M为未插入（需要执行插入）
2. 执行插入
3. 启动
4. 检查启动状态
    47653 端口打开
    mobileserver 进程打开

emma 方式停止 mobserver
==================================
1. 检查47653端口打开状态, 检查coverage.em是否存在
2. 导出覆盖率文件 coverage.ec, 备份coverage.em （加上时间戳）
3. 导出覆盖率HTML report （加上对应时间戳）
4. kill mobserver 进程    

 ls -lt mobile-server.jar
    判断 $? == 0

 判断mobile-server.jar size是否大于 5M

#!/bin/bash

function stop_mob_server(){
#!/bin/bash

function stop_mob_server(){
        pid=`ps aux | grep MobileServer | grep -v grep  | awk '

'`
        ` kill -9 $

`
        sleep 1
        echo "Stop mobileserver success."
}

#判断 emma ctl 是否启动
port_check_result=`netstat -na | grep 47653 | awk '

'`
if [ -z $

]; then
        echo "Emma ctl port 47653 is not LISTEN. Coverage.ec export operation aborted."
else
        #emma ctl 为启动状态，导出 coverage.ec, 并备份至 /home/q/mobsrv_cov
        if []

fi