backwards-compatibility-check.yaml

name: Backwards Compatibility Check
on:
  pull_request:
    types: [opened, synchronize, reopened, edited]
    branches: ['main']
jobs:
  # More info at https://github.com/Roave/BackwardCompatibilityCheck.
  backwards-compatibility-check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: "Install PHP"
        uses: shivammathur/setup-php@v2
        with:
          php-version: "8.1"
      - name: "Install dependencies"
        run: composer global require "roave/backward-compatibility-check:^8.2"
      - name: "Check for BC breaks"
        if: github.event.pull_request.user.login != 'release-please[bot]'
        # Ensure the build still passes by adding BREAKING_CHANGE_REASON=[reason] to the PR description.
        continue-on-error: ${{ contains(github.event.pull_request.body, 'BREAKING_CHANGE_REASON=') }}
        run: |
          ~/.composer/vendor/bin/roave-backward-compatibility-check --from=origin/main --format=github-actions
      - name: "Check for BC label"
        # Ensure the build still passes by adding BREAKING_CHANGE_REASON=[reason] to the PR description.
        continue-on-error: ${{ contains(github.event.pull_request.body, 'BREAKING_CHANGE_REASON=') }}
        run: |
          if [[ "true" == "${{ contains(github.event.pull_request.title, '!:') }}" ]]; then
            echo "Breaking change label found in PR title"
            exit 1
          fi
      - name: Get Latest Release
        if: github.event.pull_request.user.login == 'release-please[bot]'
        id: latest-release
        uses: pozetroninc/github-action-get-latest-release@master
        with:
          repository: ${{ github.repository }}
      - name: "Check for BC breaks (Next Release)"
        if: github.event.pull_request.user.login == 'release-please[bot]'
        # We've already approved and justified the breaking changes. Run the check but continue on error
        continue-on-error: true
        run: |
          ~/.composer/vendor/bin/roave-backward-compatibility-check \
              --from=${{ steps.latest-release.outputs.release }} \
              --to=origin/main --format=github-actions

  # Ensure the release PR does not contain an unexpected (2.0.0) major version release
  unexpected-major-version-check:
    runs-on: ubuntu-latest
    if: github.event.pull_request.user.login == 'release-please[bot]'
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: "Check for unexpected major version"
        run: |
          if [[ "true" == "${{ contains(github.event.pull_request.body, '2.0.0') }}" ]]; then
            echo "Unexpected 2.0.0 major version release found"
            exit 1
          fi