gradle很好用，但是默认是没有代码覆盖功能的，只好自己写。曾经在网上找到过别人的一段脚本，虽然也能用，但是有一些不爽的地方，一个原因是它不支持对层级工程中全部代码的覆盖，另一个原因是它用替换build/classes/main里面的class文件，再依赖gradle的单元方式来实现的。我自己写了一个代码覆盖的脚本，可以避免这两个问题，代码如下：
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allprojects { apply plugin:'idea'}subprojects { apply plugin:'java' apply plugin:'eclipse' apply plugin:'maven' apply plugin:'project-report' sourceCompatibility = 1.6 targetCompatibility = 1.6 [compileJava, compileTestJava]*.options*.encoding = 'UTF-8' dependencies { runtime 'org.slf4j:slf4j-log4j12:1.4.2@jar' testCompile 'junit:junit:4.8.2' testCompile 'org.easymock:easymock:3.0' testRuntime module('net.sourceforge.cobertura:cobertura:1.9.4') { dependencies "asm:asm:3.1", "oro:oro:2.0.8", "asm:asm-tree:3.0" } testRuntime 'log4j:log4j:1.2.13' testRuntime('org.apache.ant:ant-junit:1.8.2'){transitive = false} } /* START 代码覆盖 */ task runCover(dependsOn: testClasses) << { def codeCoverDir = new File(buildDir, "codeCover") def codeCoverClassesDir = new File(codeCoverDir, "classes") def codeCoverTestReportDir = new File(codeCoverDir, "testReport") def codeCoverDataFile = new File(codeCoverDir, "cobertura.ser") def originalClassesDir = new File(buildDir, "classes/main") def unitTestClassesDir = new File(buildDir, "classes/test") def projectPath = project.path ant { delete(dir: codeCoverDir, failonerror:false) mkdir(dir: codeCoverDir) mkdir(dir: codeCoverClassesDir) mkdir(dir: codeCoverTestReportDir) if (!unitTestClassesDir.exists()) { mkdir(dir: unitTestClassesDir) } taskdef(resource:'tasks.properties', classpath: configurations.testRuntime.asPath) taskdef(name: 'junit', classname: 'org.apache.tools.ant.taskdefs.optional.junit.JUnitTask', classpath: configurations.testRuntime.asPath) copy(todir: codeCoverClassesDir) { fileset(dir: originalClassesDir) } logger.lifecycle("cobertura-instrument: ${projectPath}") 'cobertura-instrument'(datafile:codeCoverDataFile) { fileset(dir: codeCoverClassesDir, includes:"**/*.class") } logger.lifecycle("junit: ${projectPath}") junit(haltonfailure: true, showoutput: true, fork: true, forkmode:'once') { sysproperty(key: "net.sourceforge.cobertura.datafile", value: codeCoverDataFile) classpath { pathelement(path: configurations.testRuntime.asPath) pathelement(location: codeCoverClassesDir) pathelement(location: unitTestClassesDir) } formatter(type: 'plain') batchtest(todir: codeCoverTestReportDir) { fileset(dir: unitTestClassesDir, includes: "**/*Test.class") } } } } task reportCover(dependsOn: runCover) << { def codeCoverDir = new File(buildDir, "codeCover") def codeCoverReportDir = new File(codeCoverDir, "coverReport") def codeCoverDataFile = new File(codeCoverDir, "cobertura.ser") ant { mkdir(dir: codeCoverReportDir) taskdef(resource:'tasks.properties', classpath: configurations.testRuntime.asPath) 'cobertura-report'(destdir: codeCoverReportDir, format:'html', datafile:codeCoverDataFile, encoding:'utf8') { fileset(dir: "${projectDir}/src/main/java", includes: "**/*.java") } } } /* END */}/** * 在根目录的build/codeCover/coverReport目录里生成整个工程的代码覆盖报告。必须至少有一个子工程存在，才能正常执行 */task reportCoverAll(dependsOn: subprojects.collect{"${it.path}:runCover"}) << { def codeCoverDir = new File(buildDir, "codeCover") def codeCoverReportDir = new File(codeCoverDir, "coverReport") def codeCoverDataFile = new File(codeCoverDir, "cobertura.ser") ant { mkdir(dir: codeCoverReportDir) taskdef(resource:'tasks.properties', classpath: subprojects.toArray()[0].configurations.testRuntime.asPath) 'cobertura-merge'(datafile: codeCoverDataFile) { fileset(dir: rootDir, includes: "*/build/codeCover/cobertura.ser") } 'cobertura-report'(destdir: codeCoverReportDir, format:'html', datafile:codeCoverDataFile, encoding:'utf8') { subprojects.each { fileset(dir: "${it.projectDir}/src/main/java", includes: "**/*.java") } } }} |
实现的思路就是在每个子工程的build目录下生成codeCover目录，然后把testClasses生成的被测试的代码通过cobertura加工到这个目录下的子目录，再调用junit测试，最后生成报告，与gradle java插件里面的test任务没有任何关系。根工程里面的reportCoverAll可以把各子工程生成的cobertura.ser文件合并，生成统一的报告。
This work, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
http://sulong.me/2011/08/03/use_cobertura_in_gradle_in_a_better_way