Whether jacoco will add probes in class that hasn’t a method ？

[wumangx...@gmail.com]

Hi ,there

when we write code，we may write some constant class or some enumeration class,will jacoco add probes in this kind of class? Can jacoco get coverage rate of this kind of class?


Best regards

Qiao

[Marc Hoffmann]

Hi Qiao,

JaCoCo instruments every class files that has at least one method.

* Even a empty Java class will still get a default constructor.
* For enums the compiler generates several methods
* Only interfaces can result in class files without methods

I’m not sure what you mean by “coverage rate of this kind of class”. Some Infos:

* The latest versions of JaCoCo filter out compiler generated code, so you will not see any coverage data e.g. for enums.
* Access to public members (like constants or enum values) of such classes does not involve code execution and cannot be measured.

Regards,
-marc

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[wumangx...@gmail.com]

Thanks ,Marc.
I have another question.The senecio is as follows.
My boss want me to change the jacoco to support creating recovery report on the code that has changed or added on a new branch compared to the master branch. Actually,I have asked a similar question before and you told me that sonarqube can do this .
But, the question is my boss insisting using jacoco.So I have changed the classes named Analyzer and ClassAnalyzer to filter the class and method that has not changed or add when jacoco analyzing the class file.So I almost realize this figure.But ,there is one last problem. That is when I creating html format report ,it can not generate ‘.java.html’ file for ‘.java’ file . I have no idea of why it doesn’t generate this type file ,maybe it is because that the bundlecoverage doesn’t match the source file?
In ‘.java.html’ file, the blue lines means covered and the red line means not covered . It is very convinient for me to analysis code. So can you give me some hint of which part of the source code should I change to create the final ‘.java.html’ file?

Beat regards

Qiao

[Marc Hoffmann]

Please first check what is described in the FAQ:

https://www.jacoco.org/jacoco/trunk/doc/faq.html

Why does the coverage report not show highlighted source code?

Make sure the following prerequisites are fulfilled to get source code highlighting in JaCoCo coverage reports:

• Class files must be compiled with debug information to contain line numbers.
• Source files must be properly supplied at report generation time. I.e. specified source folders must be the direct parent of the folders that define the Java packages.

Regards,

-marc

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[wumangx...@gmail.com]

thank you for answering my question which really helped me .

[wumangx...@gmail.com]

Hi,Marc

I encountered another question. When I try ‘mvn install’ to the source code of jacoco. I can can get org.jacoco.core.jar, org.jacoco.report.jar, org.jacoco.agent.jar,jacocoagent.jar, org.jacoco.ant.jar.But I can’t get jaococant.jar which is used by ant *.xml file.

The result of ‘mvn install’ is success. Do you have any idea of my problem?

Best regards
Qiao

[Evgeny Mandrikov]

Hi,

According to https://www.jacoco.org/jacoco/trunk/doc/repo.html

JAR with groupId "org.jacoco" artifactId "org.jacoco.ant" and classifier "nodeps"

is Ant Tasks with all dependencies included,

after "mvn install" it is "org.jacoco.ant/target/org.jacoco.ant-0.8.3-SNAPSHOT-nodeps.jar"

and it is exactly "jacocoant.jar" in "jacoco/target/jacoco-0.8.3.201809240506.zip".

Regards,

Evgeny

[wumangx...@gmail.com]

thank you very much