ant - Cobertura 与 Ant 脚本 : xml/html coverage report always show 0% coverage everywhere

Question

我试图让 Cobertura 在我的 ant 脚本中运行。一切顺利(源代码构建、junit 测试、cobertura 报告(xml/html)；但在 html 报告中，代码覆盖率始终为 0% ...

Ant 脚本:make-instrument

<!-- Make instrument for Cobertura engine -->
<target name="make-instrument">

    <!-- Remove the coverage data file and any old instrumentation. -->
    <delete file="${cobertura.ser}" />

    <!-- Instrument the application classes, writing the instrumented classes into ${build.instrumented.dir}. -->
    <cobertura-instrument todir="${report.cobertura.dir}">

        <!-- The following line causes instrument to ignore any source line containing a reference to log4j, 
                for the purposes of coverage reporting. -->
        <ignore regex="org.apache.log4j.*" />

        <fileset dir="${webcontent.dir}/WEB-INF/classes">
            <!-- Instrument all the application classes, but don't instrument the test classes. -->
            <include name="**/*.class" />
            <exclude name="**/*Test.class" />
        </fileset>

    </cobertura-instrument>

</target>

Ant 脚本:make-instrument

<target name="install-cobertura" if="is-hudson-env">        
    <path id="cobertura.classpath">
        <fileset dir="${user.home.sharehunter.dir}/cobertura-${cobertura.rev}">
            <include name="**/cobertura.jar" />
            <include name="**/*.jar" />
        </fileset>
    </path>
    <taskdef resource="tasks.properties" classpathref="cobertura.classpath" />
</target>

Ant 脚本:junit

<target name="run-tests" depends="make-instrument">

    <path id="classpath.test">
        <path path="${webcontent.dir}/WEB-INF/classes" />
        <pathelement location="${webcontent.dir}/WEB-INF/classes" />
        <fileset dir="${lib.dir}" includes="**/*.jar" />
        <path location="${webcontent.dir}/WEB-INF/classes" />
        <path location="${webcontent.dir}/WEB-INF" />
        <path location="${webcontent.dir}" />
    </path>

    <junit fork="yes" failureProperty="test.failed">

        <classpath refid="classpath.test" />

        <classpath location="${user.home.dir}/junit-${junit.rev}.jar" />

        <!-- Specify the name of the coverage data file to use. 
                The value specified below is the default. -->
        <sysproperty key="net.sourceforge.cobertura.datafile" file="${cobertura.ser}" />

        <!-- Note the classpath order: instrumented classes are before the original (uninstrumented) classes. -->
        <classpath location="${report.cobertura.dir}" />

        <!--
            The instrumented classes reference classes used by the
            Cobertura runtime, so Cobertura and its dependencies
            must be on your classpath.
        -->
        <classpath refid="cobertura.classpath" />

        <!-- Generate xml files for each junit tests runs -->
        <formatter type="xml" />
        <batchtest todir="${report.junit.dir}">
            <fileset dir="${webcontent.dir}/WEB-INF/classes">
                <include name="**/*Test.class" />
            </fileset>
        </batchtest>

    </junit>

    <!-- Generate Cobertura xml file containing the coverage data -->
    <cobertura-report format="xml" srcdir="${src.main.java.dir}" destdir="${report.cobertura.dir}" datafile="${cobertura.ser}" />

    <!-- Generate Cobertura html file report  containing the coverage data -->
    <cobertura-report format="html" srcdir="${src.main.java.dir}" destdir="${report.cobertura.dir}" datafile="${cobertura.ser}" />

</target>

Answer 1

这就是Cobertura FAQ说

当我生成覆盖率报告时，为什么它们总是显示到处都是 0% 的覆盖率？

Cobertura 在生成报告时可能使用了错误的 .ser 文件。当您检测您的类时，Cobertura 会生成一个 .ser 文件，其中包含有关每个类的基本信息。当您的测试运行时，Cobertura 将附加信息添加到同一数据文件中。如果检测类在运行时找不到数据文件，那么它们将创建一个新文件。在检测、运行和生成报告时使用相同的 cobertura.ser 文件很重要。

执行此操作的最佳方法是在运行测试时指定数据文件的位置。您应该将 -Dnet.sourceforge.cobertura.datafile=${basedir}/cobertura.ser sysproperty 传递给 JUnit 任务。

另一个常见问题是 cobertura.ser 文件被删除，但之前检测的类并没有被删除。任何时候删除覆盖率数据文件时，您也应该删除所有检测类。