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CONTRIBUTING.md

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Contributing to the plugin

Plugin source code is hosted on GitHub. New feature proposals and bug fix proposals should be submitted as GitHub pull requests. Your pull request will be evaluated by the Jenkins job.

Before submitting your change, please assure that you've added tests which verify your change.

Code formatting

Source code and pom file formatting is maintained by the spotless maven plugin. Before submitting a pull request, confirm the formatting is correct with:

  • mvn spotless:apply

Code Coverage

JaCoCo code coverage reporting is available as a maven target and can be displayed by the Jenkins warnings next generation plugin. Please try to improve code coverage with tests when you submit.

  • mvn -P enable-jacoco clean install jacoco:report to report code coverage with JaCoCo.

Please don't introduce new spotbugs output.

  • mvn spotbugs:check to analyze project using Spotbugs
  • mvn spotbugs:gui to review report using GUI

Reviewing code coverage

The code coverage report is a set of HTML files that show methods and lines executed. The following commands will open the index.html file in the browser.

  • Windows - start target\site\jacoco\index.html
  • Linux - xdg-open target/site/jacoco/index.html
  • Gitpod - cd target/site/jacoco && python -m http.server 8000

The file will have a list of package names. Click on them to find a list of class names.

The lines of the code will be covered in three different colors, red, green, and orange. Red lines are not covered in the tests. Green lines are covered with tests.

Maintaining automated tests

Automated tests are run as part of the verify phase. Run automated tests with multiple Java virtual machines in a development environment with the command:

$ mvn clean -DforkCount=1C verify

Report an issue

Use the "Report an issue" page to submit bug reports. Please use the link:https://www.jenkins.io/participate/report-issue/["How to Report an Issue"] guidelines when reporting issues.