name: Backwards compatibility verification

on:
  pull_request:

jobs:
  bc-check:
    runs-on: ${{ matrix.operating-system }}
    strategy:
      matrix:
        operating-system: [ ubuntu-latest ]
        php-versions: [ '7.4' ]
    name: PHP ${{ matrix.php-versions }} Test on ${{ matrix.operating-system }}

    steps:
      - name: Checkout
        uses: actions/checkout@v2
        
      - name: Fetch tags
        run: git fetch --depth=1 origin +refs/tags/*:refs/tags/*

      - name: BC Break verification
        uses: docker://nyholm/roave-bc-check-ga