name: tests

on:
  push:
  pull_request:

jobs:
  tests:
    runs-on: ubuntu-latest
    continue-on-error: ${{ matrix.allow_failure }}
    strategy:
      fail-fast: false
      matrix:
        php: ['5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0']
        stability: ['prefer-lowest', 'prefer-stable']
        allow_failure: [false]
        include:
          - php: '8.0'
            stability: 'dev'
            allow_failure: true

    name: ${{ matrix.php }}-${{ matrix.stability }}

    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Cache dependencies
        uses: actions/cache@v1
        with:
          path: ~/.composer/cache/files
          key: dependencies-php-${{ matrix.php }}-composer-${{ hashFiles('composer.json') }}

      - name: Setup PHP
        uses: shivammathur/setup-php@v2
        with:
          php-version: ${{ matrix.php }}
          coverage: none

      - name: Install dependencies
        run: composer update --${{ matrix.stability }} --prefer-dist --no-interaction --no-progress

      - name: Check coding standard
        run: composer lint

      - name: Execute tests
        run: composer test || ${{ matrix.allow_failure }}