pitest-analyze-pr.yml

# Performs mutation testing analysis on the files changed by a pull request and
# uploads the results. The associated PR is subsequently updated by the
# `pitest-update-pr.yml` workflow. See https://blog.pitest.org/oss-pitest-pr/
# for details.
name: "Mutation testing"
on:
  pull_request:
permissions:
  contents: read
jobs:
  analyze-pr:
    runs-on: ubuntu-22.04
    steps:
      - name: Check out code
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
        with:
          fetch-depth: 2
          persist-credentials: false
      - name: Set up JDK
        uses: actions/setup-java@387ac29b308b003ca37ba93a6cab5eb57c8f5f93 # v4.0.0
        with:
          java-version: 17.0.8
          distribution: temurin
          cache: maven
      - name: Run Pitest
        # By running with features `+GIT(from[HEAD~1]), +gitci`, Pitest only
        # analyzes lines changed in the associated pull request, as GitHub
        # exposes the changes unique to the PR as a single commit on top of the
        # target branch. See https://blog.pitest.org/pitest-pr-setup for
        # details.
        run: mvn test pitest:mutationCoverage -DargLine.xmx=2048m -Dverification.skip -Dfeatures="+GIT(from[HEAD~1]), +gitci"
      - name: Aggregate Pitest reports
        run: mvn pitest-git:aggregate -DkilledEmoji=":tada:" -DmutantEmoji=":zombie:" -DtrailingText="Mutation testing report by [Pitest](https://pitest.org/). Review any surviving mutants by inspecting the line comments under [_Files changed_](${{ github.event.number }}/files)."
      - name: Upload Pitest reports as artifact
        uses: actions/upload-artifact@a8a3f3ad30e3422c9c7b888a15615d19a852ae32 # v3.1.3
        with:
          name: pitest-reports
          path: ./target/pit-reports-ci