我有以下项目结构：
- src/com/dummy/abc.java
- src_tests/come/dummy/abcTest.java
- 构建.xml
我需要通过使用 emma 的测试来检查我的代码的覆盖率。通过阅读 emma + junit 示例，我得出一个结论，要获得报告，我需要执行以下操作：
- 编译'src'
- 编译'src_tests'
- 仪器编译的 'src_tests' => 'instrumented_src_tests'
- 使用附加 jvmarg 在“instrumented_src_tests”上运行 junit
问题是步骤 4 应该返回某种文件，然后与“report”命令一起使用应该创建一个报告。我越来越
emma-report:
[report] processing input files ...
[report] 1 file(s) read and merged in 67 ms
[report] nothing to do: no runtime coverage data found in any of the data files
~ 编辑我附上我的 build.xml
<?xml version="1.0" encoding="UTF-8"?>
<project name="HELL scream" default="all" basedir=".">
<property name="build.sources.dir" location="${basedir}/src"/>
<property name="build.sources.des" location="${basedir}/bin/classes"/>
<property name="test.sources.dir" location="${basedir}/src_test"/>
<property name="test.sources.des" location="${basedir}/bin/classes_test"/>
<property name="test.reports.des" location="${basedir}/reports-junit"/>
<property name="emma.sources.des" location="${basedir}/bin/classes_emma"/>
<property name="emma.reports.des" location="${basedir}/reports-emma"/>
<property name="emma.final.reports.des" location="${basedir}/reports-emma/final"/>
<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
<path id="emma.lib" >
<fileset dir="/home/user1/Desktop/emma-2.0.5312/lib">
<include name="*.jar"/>
</fileset>
</path>
<taskdef resource="emma_ant.properties" classpathref="emma.lib" />
<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
<target name="clean-all">
<delete failonerror="false">
<fileset dir="${emma.final.reports.des}"/>
<fileset dir="${emma.reports.des}"/>
<fileset dir="${emma.sources.des}"/>
<fileset dir="${test.reports.des}"/>
<fileset dir="${test.sources.des}"/>
<fileset dir="${build.sources.des}"/>
</delete>
</target>
<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
<target name="compile-sources">
<mkdir dir="${build.sources.des}"/>
<javac srcdir="${build.sources.dir}" includes="" excludes="" destdir="${build.sources.des}" listfiles="true" debug="true" includeantruntime="false"/>
</target>
<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
<target name="compile-tests">
<mkdir dir="${test.sources.des}"/>
<javac srcdir="${test.sources.dir}" includes="" excludes="" destdir="${test.sources.des}" listfiles="true" debug="true" includeantruntime="false">
<classpath>
<pathelement location="/home/user1/Desktop/junit-4.10.jar"/>
<pathelement location="${build.sources.des}"/>
</classpath>
</javac>
</target>
<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
<target name="compile-emma-tests">
<emma enabled="true" >
<instr instrpath="${test.sources.des}" destdir="${emma.sources.des}" metadatafile ="${emma.reports.des}/instrumentation.emma" merge ="true"/>
</emma>
</target>
<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
<target name="run-tests">
<mkdir dir="${test.reports.des}"/>
<junit haltonfailure="no" showoutput="yes" printsummary="true">
<formatter type="plain" usefile="false" />
<formatter type="xml"/>
<classpath>
<pathelement location="/home/user1/Desktop/junit-4.10.jar"/>
<pathelement location="${build.sources.des}"/>
<pathelement location="${emma.sources.des}"/>
<path refid="emma.lib" />
</classpath>
<batchtest todir="${test.reports.des}" fork="true">
<fileset dir="${emma.sources.des}"/>
</batchtest>
<jvmarg value="-Demma.coverage.out.file=${emma.reports.des}/coverage.emma" />
<jvmarg value="-Demma.coverage.out.merge=false" />
</junit>
</target>
<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
<target name="junit-tests-report">
<junitreport todir="${test.reports.des}">
<fileset dir="${test.reports.des}">
<include name="TEST-*.xml"/>
</fileset>
<report format="frames" todir="${test.reports.des}/junit_reports"/>
</junitreport>
</target>
<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
<target name="emma-tests-report">
<emma enabled="true" >
<report sourcepath="${build.sources.dir}">
<fileset dir="${emma.reports.des}" >
<include name="*.emma" />
</fileset>
<txt outfile="${emma.final.reports.des}/coverage.txt" depth="package" columns="class,method,block,line,name" />
<xml outfile="${emma.final.reports.des}/coverage.xml" depth="package" />
<html outfile="${emma.final.reports.des}/coverage.html" depth="method" columns="name,class,method,block,line" />
</report>
</emma>
</target>
<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
<target name="all" depends="clean-all, compile-sources, compile-tests, compile-emma-tests, run-tests, junit-tests-report, emma-tests-report"/>
</project>
这可能是微不足道的......
另外，当使用 emma.sources.dest 我在我的（唯一）测试中得到这个
run-tests:
[junit] Running com.emma.test.MathTest
[junit] Testsuite: com.emma.test.MathTest
[junit] Tests run: 1, Failures: 0, Errors: 1, Time elapsed: 0 sec
[junit] Tests run: 1, Failures: 0, Errors: 1, Time elapsed: 0 sec
[junit]
[junit] Caused an ERROR
[junit] Illegal local variable table length 5 in method com.emma.test.MathTest.<init>()V
[junit] java.lang.ClassFormatError: Illegal local variable table length 5 in method com.emma.test.MathTest.<init>()V
[junit] at java.lang.Class.forName0(Native Method)
[junit] at java.lang.Class.forName(Class.java:188)
[junit]
[junit] Test com.emma.test.MathTest FAILED
〜解决添加这个：
<jvmarg value="-XX:-UseSplitVerifier"/>
<jvmarg value="-Demma.coverage.out.file=${emma.reports.des}/coverage.emma" />
<jvmarg value="-Demma.coverage.out.merge=false" />