name: Tests

on:
  push:
    branches: [ '**' ]
  pull_request:
    branches: [ '**' ]

jobs:
  test:
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        php: ['5.5', '5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1']
        setup: ['lowest', 'stable', 'next']

    name: PHP ${{ matrix.php }} - ${{ matrix.setup }}

    steps:
    - uses: actions/checkout@v2

    - name: Setup PHP
      uses: shivammathur/setup-php@v2
      with:
        php-version: ${{ matrix.php }}
        tools: composer:v2

    - name: Cache Composer packages
      id: composer-cache
      uses: actions/cache@v2
      with:
        path: vendor
        key: ${{ runner.os }}-${{ matrix.setup }}-php-${{ matrix.php }}-${{ hashFiles('**/composer.lock') }}
        restore-keys: |
          ${{ runner.os }}-${{ matrix.setup }}-php-${{ matrix.php }}-

    - name: Install dependencies
      if: steps.composer-cache.outputs.cache-hit != 'true'
      run: |
        composer config version 1.9.0
        ${{ matrix.php >= 7.2 && matrix.php < 8 && matrix.setup == 'lowest' && 'composer require --no-update "phpunit/phpunit:^5.7.27||^6.5.14||^7.5.20" --no-interaction;' || '' }}
        ${{ matrix.php >= 8 && 'composer require --no-update phpunit/phpunit:^8.5.14 phug/phug:^1.9.0 --no-interaction;' || '' }}
        composer update --prefer-dist ${{ matrix.setup != 'next' && format('--prefer-{0}', matrix.setup) || '' }} --no-progress ${{ matrix.php >= 8.1 && '--ignore-platform-req=php' || '' }} --no-interaction

    - name: Run test suite
      run: vendor/bin/phpunit --no-coverage --verbose