FileNotFoundException when generating the report based on source files

[Shehan Ranasinghe]

When I tried to generate the report with jacococli.jar with source files, this error is given to me.

here is the command I used to generate the report.

java -jar jacococli.jar report jacoco.exec --classfiles ../../Stages/sevice/target/exracted/shehan/newOne/ --html ../report/ --sourcefiles ../../Stages/sevice/

What is the problem in here? I can't find any solution.

[Marc Hoffmann]

Can you please post the full stack trace?

Without is it hard to tell which resource is missing here.

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[Shehan Ranasinghe]

This is the whole error I've got

On Wednesday, September 18, 2019 at 3:22:35 PM UTC+5:30, Marc R. Hoffmann wrote:

Can you please post the full stack trace?

Without is it hard to tell which resource is missing here.

On 2019-09-18 08:34, Shehan Ranasinghe wrote:

When I tried to generate the report with jacococli.jar with source files, this error is given to me.

 

 

here is the command I used to generate the report.

 

java -jar jacococli.jar report jacoco.exec --classfiles ../../Stages/sevice/target/exracted/shehan/newOne/ --html ../report/ --sourcefiles ../../Stages/sevice/

 

What is the problem in here? I can't find any solution.

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[Marc Hoffmann]

Ok, so the problem happens when the CLI tries to load referenced source file. You could verify by leaving out the parameter

  --sourcefiles ../../Stages/sevice

In this case a report should be generated without highlighted sources though.

The interesting question is, why some class files seems to have a source reference to "shehan/newOne". Normally it should look more like "a/b/c/Foo.java".

Questions about the class files in ../../Stages/sevice/target/extracted/shehan/newOne/

1) How do you create/compile these class files?

2) Can you provide a the class files for inspection (e.g. by Zip file)?

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[Shehan Dhaleesha]

OK, So basically this is not Java. But the compiled files are in bytecode(.class files). What I've tried is called as "Ballerina". It is also compiled into bytecode so that the JVM can run it. Why I use jacoco for Ballerina is because of Scala. I saw some blog posts that jacoco can be used to generate coverage reports in Scala also (as far as I know Scala is also running on JVM). So that is the reason to have different different paths respect to java. So yes I'll attach a compiled jar file so that you can observe it. And the best part is jacoco is generating a coverage report but not highlighting the source file. I'll attach a image of a generated coverage report. So what I want is mapping source files with the report so that I can see the coverage. If this can't be done using this jacoco version please let me know, And it would be really helpful if you can guide me a way to re-implement the jacoco so that I can achieve what I want.

Ballerina website: https://v1-0.ballerina.io/

Jar file location : https://drive.google.com/open?id=1NF_tja42tFK3aQ-qcd5e2qvevxu-K84o

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[Marc Hoffmann]

Thanks for providing the class files. It helped me to identify an different bug in JaCoCo, thanks! ;)

    https://github.com/jacoco/jacoco/issues/940

Unfortunately this is not related to your problem. I was able to reproduce your issue only in a unit test and created a fix for it:

    https://github.com/jacoco/jacoco/pull/941

But I still want to reproduce and understand your exact issue. Can you please tell me the version of the jacococli.jar you’re using? For this please execute:

    java -jar jacococli.jar version

Thanks!

On 18. Sep 2019, at 14:07, Shehan Dhaleesha <jinuthisa...@gmail.com> wrote:

OK, So basically this is not Java. But the compiled files are in bytecode(.class files). What I've tried is called as "Ballerina". It is also compiled into bytecode so that the JVM can run it. Why I use jacoco for Ballerina is because of Scala. I saw some blog posts that jacoco can be used to generate coverage reports in Scala also (as far as I know Scala is also running on JVM). So that is the reason to have different different paths respect to java. So yes I'll attach a compiled jar file so that you can observe it. And the best part is jacoco is generating a coverage report but not highlighting the source file. I'll attach a image of a generated coverage report. So what I want is mapping source files with the report so that I can see the coverage. If this can't be done using this jacoco version please let me know, And it would be really helpful if you can guide me a way to re-implement the jacoco so that I can achieve what I want.

Ballerina website: https://v1-0.ballerina.io/

Jar file location : https://drive.google.com/open?id=1NF_tja42tFK3aQ-qcd5e2qvevxu-K84o

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[Shehan Dhaleesha]

Oh. So this is the version I've got.

So can I still have a hope?

[Marc Hoffmann]

Sure, there is hope! We’re working on both issues we identified with your class files. Just give us some time — it’s a spare time project ;)

On 21. Sep 2019, at 05:10, Shehan Dhaleesha <jinuthisa...@gmail.com> wrote:

Oh. So this is the version I've got.

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[Evgeny Mandrikov]

On Wednesday, September 18, 2019 at 1:45:46 PM UTC+2, Marc R. Hoffmann wrote:

The interesting question is, why some class files seems to have a source reference to "shehan/newOne". Normally it should look more like "a/b/c/Foo.java".

Files

shehan/newOne/$moduleInitFrame.class

shehan/newOne/$moduleStartFrame.class

cause https://github.com/jacoco/jacoco/pull/941

FileNotFoundException with message "Is a directory"

because they have empty "SourceFile" attribute.

Java Virtual Machine Specification about "SourceFile" attribute ( https://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html#jvms-4.7.10 ) states

The string referenced by the sourcefile_index item will be interpreted as indicating the name of the source file from which this class file was compiled.

So in my opinion empty is not a valid value and you'd better report this to developers of Ballerina.

File

shehan/newOne/___init.class

causes https://github.com/jacoco/jacoco/issues/940

explanation is in https://github.com/jacoco/jacoco/issues/940#issuecomment-533659632

On Saturday, September 21, 2019 at 5:10:39 AM UTC+2, Shehan Dhaleesha wrote:

So can I still have a hope?

 

If you exclude above files from generation of report, then even with JaCoCo version 0.8.4 you already should be able to generate report.

Also as explained on page https://www.jacoco.org/jacoco/trunk/doc/environment.html

Master branch of JaCoCo is automatically built and snapshot is available at https://oss.sonatype.org/service/local/artifact/maven/redirect?r=snapshots&g=org.jacoco&a=jacoco&e=zip&v=LATEST

so you can wait a bit when fixes for both will arrive into master to try them before we'll do release.

Pull requests are also built automatically, and since first issue is already fixed in master, pull request with fix for the second contains both - https://ci.appveyor.com/project/JaCoCo/jacoco/builds/27575431/artifacts

[Shehan Dhaleesha]

So yes, I exclude the ___init.class file when generating the report. That is not my case. Why can't I map the source file with the generated report. It says that

When I gave the source files as a argument, Then It gives the above mentioned error. So is this mean I can't use JaCoCo in my case?

[Shehan Dhaleesha]

Waiting for your reply ... :)

[Evgeny Mandrikov]

File

shehan/newOne/main.class

has package name "shehan.newOne"

and "SourceFile" attribute "main.bal"

so JaCoCo looks for a source file "shehan/newOne/main.bal"

relative to a directory specified by "--sourcefiles" parameter

i.e. in case of

--sourcefiles ../../Stages/sevice

it looks for

../../Stages/service/shehan/newOne/main.bal

[Shehan Dhaleesha]

So yes, I executed that path also. Then It won't do any analysis and no error. But the result is same. Any solution for this case?

[Marc Hoffmann]

Hi,

we fixed both issues on master. You can download the latest build here:

https://ci.appveyor.com/project/JaCoCo/jacoco/branch/master/artifacts

Regards,

-marc

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[she...@wso2.com]

Oh greate. now it is working, Thanks for the help ;). Love the community behind JaCoCo :D

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[Marc Hoffmann]

Also many thanks for re-testing!

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