Cobertura使用代码覆盖率学习笔记

1、代码覆盖率1.代码覆盖率工具比较用过几款java单体覆盖率工具。稍稍列举一下：Jcoverage优点：1支持ANT TASK2 支持 Eclipse Plugin缺点1商用软件，要money的2貌似以前instrument内存管理的很郁闷，轻松就会 outofmemoryEmma优点：1开源软件2 支持 ANT TASK缺点：ANT TASK的参数指定较弱，coverage参数需要追加配置文件。Cobertura优点：1开源软件2 支持 MARVEN缺点：可定制参数太少从文件的输出上来看，还是以xml,html生成为主。2.Codepro analytiX代码覆盖率安装eclipse插件，在这

2、里不细说了。更新地址：CodePro AnalytiX - http:/dl.google.cOm/eclipse/inst/codepro/latest/3.6可以参考Eclipse常用插件图解汇总.docx文档在菜单选择CodePro>Views>Code Coverage选择统计结果视图I。口6弟可 运行(RSf寸雄质4j ED(W)穗助(H)Cfieat Sh&etcViews*PerspectivesK言View LogClear LogmExplore WorkspacePreferencesAbout怛 Evaluation Ouide HelpWako me

3、每f， & & &9瓶AudHfAudit ExplorerMetricsDependenciesCede Coverage蠢TestCase OutlineSi mils rC ode在项目上点击鼠标右键，CodePro Tools>Instrument for Code Coverage如下图所示，Exercise-KtjiHclIoDcb Jjabrefd k 吧 TTPe I rum l 口 fil 氏 xi 七 i_r 死 jBuild PathlSourceX5CSIRefactorX KTIA Import.,l3 Export.Build Proj

4、ect的 Refreshf$Close ProjectClose Unrelated ProjectsAssign Working Sets.Run Optimized AsRun With CloverAsRun As伊Debug AsValidateCloverTeamACompare With*Rest or* from Local History.CodePro ToolsConfigureienSum 2.z I Audit Code八 Audit Code L1 sing.|J Compute Metrics|驯 Compute Metrics Using,Ju Generate

5、Factory Clashes Generate Test Case?ijj Find Similar Codt国 Find Dead CodeV Check Spelling岷 Repair JavadocF Analyze Dependencies点 Instruirtent fdr Code CeverigeProgrtW聘I & Explore正常运行测试用例，在Code Coverage视图会出现结果Java-Exercise J-MachOperators/src/math/Addlxtended.jivo-EdHpse /Usersuduynguyen/workspa.c

6、e-sv/at脂*3Plug-ir D. 邑妙皆审GH 念曲QTW 圈回 如衍炉import ja/a.uttl.LinkedList;迁 N 伽 J 23、o Finished artfir 0.143 seconds小 £31¥ 洋，今十JAdd.java阐 AddLxenmdJava 口publicRjns: 52/ a Errors Failuri Ifernaifi AdclTpit Runnpf HJ)i。：EittstSum 4EtcstSum 2Eit«5tSum_3 ELjmach.lestAII Runner; jUn t 4 SLinaih.

7、AddExlendedTest Runner faEmath.MvltiplyExterdedTc5t R以red: notcovered、ble sum (L inkedL ist<Double> nj(rbers)( =0；umbers itercrtor(); MextQ) LueD = CDouble>it. nextf);/result 4- valueD.doubleVolue();return result;public static double sum (Yector<Double> nurrbers) double result=0;Writa

8、bleSmart InsertDetdih HistoryClasses:Method!1 / 12 / 3100.0% 66.791Lines:if 1361.5%Blcxks:6/966.7%Inwruciions:22 / 4351 .家coverage details可 GonsoH IKCseraUon Results p Gode Coverage 云 1 Dtad God«= Failure TraceIfil Exercise-3-MathOotrators (51.4?6.由 nuth<51.4*. +2.2X) 21 人ddjgpo.g, 18A&

9、.) 2) Add 7)Ex ce nd edJB| )improvementsince last run使用CodePro AnalytiX.的优点：是Eclipse的集成插件，不需要想 Cobertura建立项目，简 单容易上手，对提高代码测试覆盖率节省了事件。缺点：无法过滤类，在报告中包含了整个测试项目的测试点类。因此生成报告需要借助丁Cobertura 来完成。总结：使用CodePro AnalytiX来辅助编写测试用例，达到质量目标。中创中问件的质量目标是： 行覆盖率90%,分支覆盖率75%。然后，使用Cobertura生成测试用例的报告。3.Cobertura 例子首先仓U建一个

10、Java 项目，项目 名： utmp.code.coverage.test结构如下图所示：J U utmp.eo dst &斯com.amstthew.prarti.eebertura7| Hellojavaj> 谣 test由 com amartheA, p racti s e, c c berturaT HelloTest.java0 MURE jdkl.5.0_16> M弓I用的库j 口 build, m coberturajli b fe junit的 com.5pring&DLJJunit-4.4.-0jar菱 asnn-3r0.jair1

11、3&rn-tree3»Djar.jakdrta-oro -2.0.8.J arQ Jakarta-orodic&n&t,txt。I&g4j-1.2.9.jarj logij-licen&e.txt加obrtursjr国 perties栗buildml接下，创建一个Ant构建配置文件，帮我们实现自动化的编译，单元测试以及cobertura来测量单元测试的代码覆盖情况。Ant的build.xml文件内容如下：增加测试点，在红色1处添加，增加测试用例在红色 2处添加。<?xml version="1.0"

12、encoding="UTF-8” ?><projectname= "cobertura.utmp.code.coverage"default= "coverage" basedir= "." ><!-弓I用perties文件配置路径信息<propertyfile= "perties"/><!- 设置 cobertura 路径-><pathid= "cobertura.classpath"<f

13、ilesetdir="$cobertura.dir"<includename= "cobertura.jar"/><includename= "lib/*/*.jar"/></fileset></path><!- 项目依赖的jar包-><!-path id="project.classpath"><fileset dir="$project.lib.dir"><include name="*.ja

14、r" /></fileset></path-><!- 配置 cobatura ant<taskdefclasspathref=扩展任务->"cobertura.classpath"resource= "perties"/><targetname= ''init"><mkdirdir="$classes.dir"/><mkdirdir="$instrumented.dir"/>

15、;<mkdirdir="$reports.xml.dir"/><mkdirdir="$reports.html.dir"/><mkdirdir="$coverage.xml.dir"/><mkdirdir="$coverage.html.dir"/></target><!-编译源代码-><targetname= ''compile" depends= "init">-><!-

16、创建编译结果目录<javacsrcdir=debug= "true""$src.dir:$testsrc.dir"destdir= "$classes.dir"<!- classpath refid="project.classpath" / -><classpathrefid=</javac>"cobertura.classpath"/></target><targetname= "instrument"depen

17、ds= "init,compile"<!-Remove the coverage data file and any old instrumentation.-<deletefile= "cobertura.ser" /><deletedir="$instrumented.dir"/><!- Instrument the application classes,writing the instrumented classes into $(build.instrumented.dir).->&

18、lt;cobertura-instrumenttodir="$instrumented.dir"><!- The following line causes instrument to ignore any source line containing a reference to log4j,for the purposes of coverage reporting.-><!-排除的类-><ignoreregex= "org.apache.log4j.*”/><filesetdir= "$classes

19、.dir"><!- Instrument all the application classes, but don't instrument the test classes.-><!- 包含的类-><includename= "*/*.class"/><!- 1.添加测试点类，可以参考下面的写法而不需要上面*/*.class -><!- includename="com/cvicse/inforguard/sp/userman/service/impl/UserManImpl.clas

20、s" / -><!- 排除的类-><excludename= "*/*Test.class"/></fileset></cobertura-instrument></target><!-单元测试-><targetname= "test" depends= "init,compile" ><junitfork= "yes" dir= "$basedir" failureProperty= &q

21、uot;test.failed" > <!-Note the classpath order: instrumented classes are before the original (uninstrumented) classes. This is important.-><classpathlocation= "$instrumented.dir"/><classpathlocation= "$classes.dir"/><!The instrumented classes referenc

22、e classes used by the Cobertura runtime, so Cobertura and its dependencies must be on your classpath.-><classpathrefid= "cobertura.classpath"/><!- classpath refid="project.classpath" / ->if= "testcase" /><formattertype= "xml" /><test

23、name= "$(testcase)" todir= "$(reports.xml.dir)'<batchtesttodir="$(reports.xml.dir)"unless="testcase"<filesetdir="$testsrc.dir"<includename="*/*Test.java"/><!- 2.增加测试用例类，可以参考下面的例子写-><!-includename="com/cvicse/inforgu

24、ard/sp/userman/service/impl/UserManImplTest.java" / -></fileset></batchtest>>>/>"$reports.html.dir"/>totallinerate= "100" /></junit><junitreporttodir="$reports.xml.dir"<filesetdir= "$reports.xml.dir"<includenam

25、e= "TEST-*.xml"</fileset><reportformat= "frames" todir=</junitreport></target><targetname= "coverage-check" ><cobertura-checkbranchrate="34"</target><!- 生成coverage xml格式报告 -><targetname= "coverage-report"

26、><!-Generate an XML file containing the coverage data using the "srcdir" attribute.-><cobertura-reportsrcdir="$src.dir" destdir= "$coverage.xml.dir"format= "xml"/></target><!- 生成 coverage html格式报告-><targetname= "alternate-cov

27、erage-report"><!-Generate a series of HTML files containing the coveragedata in a user-readable form using nested source filesets.-><cobertura-reportdestdir="$coverage.html.dir"><filesetdir= "$src.dir" ><includename= "*/*.java"/></file

28、set></cobertura-report></target><!-清除编译生成的结果文件-><targetname="clean" description="Remove all files created by the build/testprocess." ><deletedir="$classes.dir"/><deletedir="$instrumented.dir"/><deletedir="$reports

29、.dir"/><deletefile="cobertura.log"/><deletefile="cobertura.ser"/></target><targetname="coverage" depends="clean,init,compile,instrument,test,coverage-report,alternate-coverage-report”description="Compile, instrument ourself, run th

30、etests and generate JUnit and coverage reports."/></project>perties 文件：#The source code for the examples can be found in this directorysrc.dir= ./srctestsrc.dir= ./test#Test items to be dependent on the path of jar package#project.lib.dir=E:/workspace 7/sp_commonlib#The path t

31、o cobertura.jarcobertura.dir= cobertura#Classes generated by the javac compiler are deposited in this directory#classes.dir=./binclasses.dir= classes#Instrumented classes are deposited into this directoryinstrumented.dir= instrumented#All reports go into this directoryreports.dir= reports#Unit test reports from JUnit are deposited into this direct