ci.yml

name: CI
on:
  pull_request:
  push:
jobs:
  test:
    runs-on: ubuntu-latest
    steps:
    - name: Git checkout (merge)
      uses: actions/checkout@v4
      if: github.event_name != 'pull_request'
      with:
        fetch-depth: 0

    - name: Git checkout (PR)
      uses: actions/checkout@v4
      if: github.event_name == 'pull_request'
      with:
        fetch-depth: 0
        # see: https://frontside.com/blog/2020-05-26-github-actions-pull_request/#how-does-pull_request-affect-actionscheckout
        ref: ${{ github.event.pull_request.head.sha }}
      
    - uses: actions/setup-java@v4
      with:
        distribution: temurin
        java-version: 18
        cache: sbt
    - name: Run tests
      run: sbt clean coverage test

    - name: Upload coverage data to Coveralls
      run: sbt coverageReport coveralls
      env:
        COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        COVERALLS_FLAG_NAME: Scala ${{ matrix.scala }}