Hi Marc,
Thanks for your answer. I'll give you a bit more details because I still
don't understand how I can get readable results:
The application for which I want to measure the coverage is a server. The
classpath of the server contains obfuscated jars. I can clearly see the
obfuscated classes by using the -verbose:class JVM option for the server.
For example, I can see:
[Loaded lib.system.datactrl.k from
file:/data/home/testauto/nxat/data/bamboo/datahub-build-10/datahub-build-10-agent/xml-data/build-dir/DAT-DHBB10454-UN/dist/nxdh-6.3-02-SNAPSHOT/NXDH/Soft/jar/smartsys.jar]
k is the result of obfuscation of a class called DataWriteController. The
server is started using
-javaagent:org.jacoco.agent-${jacoco.version}-runtime.jar in order to allow
instrumentation.
In order to test the server, we run an Ant Junit task embedded into the
jacoco coverage task:
<jacoco:coverage destfile="${jacoco.dest.file}" append="true"
enabled="${nxdh.coverage.junit}">
<junit printsummary="true" fork="true" forkmode="perTest" dir="${basedir}"
showoutput="${show.output}" jvm="${JAVA_HOME}/bin/java">
<classpath refid="test.classpath" />
<jvmarg line="${test.jvmargs}" />
<jvmarg line="${debug.jvmargs}" />
<jvmarg line="${test.args}" />
<formatter type="brief" usefile="false" />
<formatter type="xml" />
<batchtest todir="${test.report.dir}">
<zipfileset src="${test.jar}" includes="testsuites/*TestSuite*.class"
excludes="${serial.test.suites}" />
</batchtest>
</junit>
</jacoco:coverage>
The junit task has its own classpath which may contain non-obfuscated jars
but I guess it is used for the junit test process only, not for the server
under test.
After generating coverage report, I can clearly see coverage on
DataWriteController class. This makes me confused because I would expect to
see coverage on lib.system.datactrl.k, and not on
lib.system.datactrl.DataWriteController.
Does this make sense or do I miss something?
Thanks a lot.
Regards,
Nicolas
Le lun. 10 oct. 2022 à 13:56, Marc Hoffmann <[email protected]> a
écrit :
> Hi Nicolas,
>
> JaCoCo works on byte code only. It doesn’t matter whether the byte code
> comes from the compiler or obfuscator. Of you create an report on the
> obfuscated code the result will probably not very readable though.
>
> If you see coverage on a class “com.xxx.User” this means a class with
> exact this name was loaded in the JVM when coverage data was collected.
>
> Regards,
> -marc
>
>
> On 7. Oct 2022, at 16:26, Nicolas Garcin <[email protected]>
> wrote:
>
> Hi everyone,
>
> Our software is written in Java and (partly) obfuscated. We're measuring
> our test coverage with Jacoco agent. I'm surprised to see that Jacoco
> manages to calculate coverage even on obfusacted code. For example, I have
> a com.xxx.User.class that is obfuscated into a.b.c.class. The obfuscated
> class is used at runtime and I can see in the coverage report some coverage
> on com.xxx.User.class. How is that possible ?
>
> Thanks and Regards,
> Nicolas
>
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