如何使用Ant生成Emma代码覆盖率报告?

时间:2008-09-09 21:37:44

标签: ant code-analysis emma

如何设置Ant任务以生成Emma代码覆盖率报告?

3 个答案:

答案 0 :(得分:14)

回答有关源和已检测目录的位置的问题(这些目录可以切换到您的标准目录结构):

<property file="build.properties" />
<property name="source" location="src/main/java" />
<property name="test.source" location="src/test/java" />
<property name="target.dir" location="target" />
<property name="target" location="${target.dir}/classes" />
<property name="test.target" location="${target.dir}/test-classes" />
<property name="instr.target" location="${target.dir}/instr-classes" />

类路径:

<path id="compile.classpath">
  <fileset dir="lib/main">
    <include name="*.jar" />
  </fileset>
</path>

<path id="test.compile.classpath">
  <path refid="compile.classpath" />
  <pathelement location="lib/test/junit-4.6.jar" />
  <pathelement location="${target}" />
</path>

<path id="junit.classpath">
  <path refid="test.compile.classpath" />
  <pathelement location="${test.target}" />
</path>

首先,您需要设置Ant可以找到Emma库的位置:

<path id="emma.lib" >
    <pathelement location="${emma.dir}/emma.jar" />
    <pathelement location="${emma.dir}/emma_ant.jar" />
</path>

然后导入任务:

<taskdef resource="emma_ant.properties" classpathref="emma.lib" />

然后检测代码:

<target name="coverage.instrumentation">
    <mkdir dir="${instr.target}"/>
    <mkdir dir="${coverage}"/>
    <emma>
        <instr instrpath="${target}" destdir="${instr.target}" metadatafile="${coverage}/metadata.emma" mode="copy">
            <filter excludes="*Test*"/>
        </instr>
    </emma>
    <!-- Update the that will run the instrumented code -->
    <path id="test.classpath">
        <pathelement location="${instr.target}"/>
        <path refid="junit.classpath"/>
        <pathelement location="${emma.dir}/emma.jar"/>
    </path>
</target>

然后使用适当的VM参数运行目标,如:

<jvmarg value="-Demma.coverage.out.file=${coverage}/coverage.emma" />
<jvmarg value="-Demma.coverage.out.merge=true" />

最后生成您的报告:

<target name="coverage.report" depends="coverage.instrumentation">
    <emma>
        <report sourcepath="${source}" depth="method">
            <fileset dir="${coverage}" >
                <include name="*.emma" />
            </fileset>
            <html outfile="${coverage}/coverage.html" />
        </report>
    </emma>
</target>

答案 1 :(得分:2)

User Guide has a good example of how to set up your build script,这样您不仅可以将执行中的已检测代码分开,而且还包含在同一<target>中,这样您就不必运行一系列不同的目标,但是你可以做一些像ant emma tests这样的事情(例如ant tests是你正常运行单位测试的方式。)

以下是他们的例子:

<target name="emma" description="turns on EMMA instrumentation/reporting" >
    <property name="emma.enabled" value="true" />
    <!-- EMMA instr class output directory: -->
    <property name="out.instr.dir" value="${basedir}/outinstr" />
    <mkdir dir="${out.instr.dir}" />
</target>

<target name="run" depends="init, compile" description="runs the examples" >
    <emma enabled="${emma.enabled}" >
      <instr instrpathref="run.classpath"
             destdir="${out.instr.dir}" 
             metadatafile="${coverage.dir}/metadata.emma"
             merge="true"
      />
    </emma>

    <!-- note from matt b: you could just as easily have a <junit> task here! -->
    <java classname="Main" fork="true" >
      <classpath>
       <pathelement location="${out.instr.dir}" />
        <path refid="run.classpath" />
        <path refid="emma.lib" />
      </classpath> 
      <jvmarg value="-Demma.coverage.out.file=${coverage.dir}/coverage.emma" />
      <jvmarg value="-Demma.coverage.out.merge=true" />
    </java>

    <emma enabled="${emma.enabled}" >
      <report sourcepath="${src.dir}" >
        <fileset dir="${coverage.dir}" >
          <include name="*.emma" />
        </fileset>

        <txt outfile="${coverage.dir}/coverage.txt" />
        <html outfile="${coverage.dir}/coverage.html" />
      </report>
    </emma>
</target>

答案 2 :(得分:0)

Emma 2.1介绍了另一种获取运行时覆盖率信息的方法(.ec文件)。可以从运行检测应用程序的计算机的给定端口远程请求数据。所以没有必要停止VM。

要获取包含运行时覆盖率数据的文件,您需要在运行测试和生成覆盖率报告之间在Ant脚本中插入以下代码段:

<emma>
    <ctl connect="${emma.rt.host}:${emma.rt.port}" >
        <command name="coverage.get" args="${emma.ec.file}" />
        <command name="coverage.reset" />
    </ctl>
</emma>

其他步骤与Emma 2.0类似。它们在previous post

中有完美描述

有关Emma 2.1功能的更多信息:http://sourceforge.net/project/shownotes.php?group_id=108932&release_id=336859