test.yml

name: Gradle tests using matrix

on:
  pull_request:
    branches: [ "main" ]

jobs:
  changes:
    permissions:
      pull-requests: read
    uses: ./.github/workflows/check-changes.yml
  test:
    needs: changes
    if: needs.changes.outputs.packages != '[]'
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    strategy:
      matrix:
        # test only changed projects
        projects: ${{ fromJSON(needs.changes.outputs.packages) }}  

    steps:
      - uses: actions/checkout@v4
      - name: Set up JDK 21
        uses: actions/setup-java@v4
        with:
          java-version: '21'
          distribution: 'temurin'
          cache: gradle
      
      # will test all or some of the projects individually but still individually
      - name: tests individually 
        run: gradle ${{ matrix.projects }}:clean ${{ matrix.projects }}:test