Instructions for Java/JaCoCo

[lorenzleutgeb]

I am using kt3k/coveralls-gradle-plugin now, together with JaCoCo. I am trying to migrate my build to GitHub Actions. Running it with just the GitHub token configured, I get:

Run coverallsapp/github-action@master
Using lcov file: ./coverage/lcov.info
##[error]Lcov file not found.
##[error]Node run failed with exit code 1

Probably I need to point the GitHub action at the XML file generated by JaCoCo, but I don't know how.

[mkrakowitzer]

Also would like to know how to do this.

[jamesdh]

I defined the path-to-lcov property, pointing it at my JaCoCo xml file and hoping it would just work. No luck. Judging from the error, it specifically needs LCOV input:

Using lcov file: ./back/build/reports/jacoco/test/jacocoTestReport.xml
[error] "2019-11-16T16:25:38.355Z"  'error from lcovParse: ' 'Failed to parse string'
[error] "2019-11-16T16:25:38.356Z"  'input: ' '<?xml version="1.0" encoding="UTF-8" standalone="yes"?><!DOCTYPE report ' +

@nickmerwin is there any chance this will be expanded to support a range of reports more inline with what Coveralls has supported in the past? Guessing this was a choice to cover the most widely used tool first (Node e.g. lcov), and eventually loop back around for the rest of us.

[jamesdh]

This is probably going to become a bigger request now that GitHub Actions are open to the masses.

[whiskeysierra]

https://github.com/danielpalme/ReportGenerator looks like it could convert from jacoco to lcov. Not sure how to set it up, since it's .NET...

[JavierSegoviaCordoba]

Any update about this?

[eaxdev]

This is also relevant to me. Currently, I use Jacoco gradle plugin. Jacoco not support output test report in lcov format! Can there be alternatives to Jacoco?

[derekm]

I am running coveralls using the following actions:

    - env:
        BRANCH_NAME_OR_REF: ${{ github.head_ref || github.ref }}
      run: echo "::set-env name=BRANCH_NAME::${BRANCH_NAME_OR_REF#refs/heads/}"
    - run: |
        echo "::set-env name=PR_NUMBER::$(jq --raw-output .pull_request.number "$GITHUB_EVENT_PATH")"
    - name: Coveralls Maven plugin
      run: |
        mvn coveralls:report \
        --no-transfer-progress \
        -D repoToken=${{ secrets.COVERALLS_TOKEN }} \
        -D serviceName=github \
        -D serviceBuildUrl=https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks \
        -D branch=$BRANCH_NAME \
        -D pullRequest=$PR_NUMBER

Only issue is the branch command line argument gets set to the commit hash when built from a detached head. See here: https://github.com/trautonen/coveralls-maven-plugin/issues/136#issuecomment-664679270

[bixu]

This is also a problem for @yonatankarp and me. We are using Jacoco and need to be able to feed our XML report to Coveralls (Jacoco seems not to support the lcov file format).

[keith-miller]

Wondering if there has been any update on this. Thanks

[jonashackt]

If the coveralls GitHub action does not support JaCoCo and Java atm, it seems one is forced to switch to https://about.codecov.io/ (as for example done at cucumber-jvm: https://github.com/cucumber/cucumber-jvm/blob/main/.github/workflows/build.yml).

[samrocketman]

I was able to get coveralls working with jacoco in github actions. You need to set a COVERALLS_REPO_TOKEN secret environment variable.

Here's a reference pull request https://github.com/samrocketman/jervis/pull/155

[samrocketman]

@jamesdh it is; people are here to be productive and filed this issue because they wanted code coverage. So while this action lacks features I provided a workaround for those who want code coverage now and not wait for this issue to eventually support it (maybe not ever; this issue has been open for almost 3 years).

[mrexox]

Hey guys! New version of github action coverallsapp/github-action@v2 provides the support for Jacoco format. Please, try it out.

Configuration example:

- name: Coveralls
  uses: coverallsapp/github-action@v2
  with:
    # *base-path* is prepended to all paths in order to correctly reference source files on coveralls.io
    base-path: src/main/java 
    
    # *file* is optional, but good to have. By default coveralls will try to find the report automatically.
    file: target/jacoco-report/jacoco.xml

Please note that v2 is a pre-release. If you notice any issues please write about them, I'll fix them as soon as possible.

[mrexox]

I'm going to close the issue, but feel free to reopen it or create a new one if you face any issues.