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    copied!<p>To answer questions about where the source and instrumented directories are (these can be switched to whatever your standard directory structure is):</p> <pre><code>&lt;property file="build.properties" /&gt; &lt;property name="source" location="src/main/java" /&gt; &lt;property name="test.source" location="src/test/java" /&gt; &lt;property name="target.dir" location="target" /&gt; &lt;property name="target" location="${target.dir}/classes" /&gt; &lt;property name="test.target" location="${target.dir}/test-classes" /&gt; &lt;property name="instr.target" location="${target.dir}/instr-classes" /&gt; </code></pre> <p>Classpaths:</p> <pre><code>&lt;path id="compile.classpath"&gt; &lt;fileset dir="lib/main"&gt; &lt;include name="*.jar" /&gt; &lt;/fileset&gt; &lt;/path&gt; &lt;path id="test.compile.classpath"&gt; &lt;path refid="compile.classpath" /&gt; &lt;pathelement location="lib/test/junit-4.6.jar" /&gt; &lt;pathelement location="${target}" /&gt; &lt;/path&gt; &lt;path id="junit.classpath"&gt; &lt;path refid="test.compile.classpath" /&gt; &lt;pathelement location="${test.target}" /&gt; &lt;/path&gt; </code></pre> <p>First you need to setup where Ant can find the Emma libraries:</p> <pre><code>&lt;path id="emma.lib" &gt; &lt;pathelement location="${emma.dir}/emma.jar" /&gt; &lt;pathelement location="${emma.dir}/emma_ant.jar" /&gt; &lt;/path&gt; </code></pre> <p>Then import the task:</p> <pre><code>&lt;taskdef resource="emma_ant.properties" classpathref="emma.lib" /&gt; </code></pre> <p>Then instrument the code:</p> <pre><code>&lt;target name="coverage.instrumentation"&gt; &lt;mkdir dir="${instr.target}"/&gt; &lt;mkdir dir="${coverage}"/&gt; &lt;emma&gt; &lt;instr instrpath="${target}" destdir="${instr.target}" metadatafile="${coverage}/metadata.emma" mode="copy"&gt; &lt;filter excludes="*Test*"/&gt; &lt;/instr&gt; &lt;/emma&gt; &lt;!-- Update the that will run the instrumented code --&gt; &lt;path id="test.classpath"&gt; &lt;pathelement location="${instr.target}"/&gt; &lt;path refid="junit.classpath"/&gt; &lt;pathelement location="${emma.dir}/emma.jar"/&gt; &lt;/path&gt; &lt;/target&gt; </code></pre> <p>Then run a target with the proper VM arguments like:</p> <pre><code>&lt;jvmarg value="-Demma.coverage.out.file=${coverage}/coverage.emma" /&gt; &lt;jvmarg value="-Demma.coverage.out.merge=true" /&gt; </code></pre> <p>Finally generate your report:</p> <pre><code>&lt;target name="coverage.report" depends="coverage.instrumentation"&gt; &lt;emma&gt; &lt;report sourcepath="${source}" depth="method"&gt; &lt;fileset dir="${coverage}" &gt; &lt;include name="*.emma" /&gt; &lt;/fileset&gt; &lt;html outfile="${coverage}/coverage.html" /&gt; &lt;/report&gt; &lt;/emma&gt; &lt;/target&gt; </code></pre>
 

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