name: Run unit tests against all PRs

on:
  pull_request:
    types: [opened, synchronize]

jobs:
  test:
    runs-on: ubuntu-latest
    permissions:
      contents: read
    steps:
      - uses: actions/checkout@v3

      - uses: actions/setup-java@v3
        with:
          java-version: '11'
          distribution: 'adopt'
          cache: gradle

      - name: Get PR number
        id: pr
        run: echo "::set-output name=pull_request_number::$(gh pr view --json number -q .number || echo "")"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Validate Gradle wrapper
        uses: gradle/wrapper-validation-action@v1

      - name: Run unit tests
        uses: gradle/gradle-build-action@v2
        with:
          arguments: build
        env:
          GITHUB_VERSION: pr${{ steps.pr.outputs.pull_request_number }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Staging artifact
        run: mkdir staging && cp build/libs/*.jar staging

      - name: Artifact output
        uses: actions/upload-artifact@v2
        with:
          name: multiverse-core-pr${{ steps.pr.outputs.pull_request_number }}
          path: staging