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name: "PHPStan"

on:
  - push
  - pull_request

env:
  COMPOSER_FLAGS: "--ansi --no-interaction --no-progress --prefer-dist"
  SYMFONY_PHPUNIT_VERSION: ""

jobs:
  tests:
    name: "PHPStan"

runs-on: ubuntu-latest

strategy:
      matrix:
        php-version:
          # pinned to 7.4 because we need PHPUnit 7.5 which does not support PHP 8
          - "7.4"

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

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

- name: Get composer cache directory
        id: composercache
        run: echo "::set-output name=dir::$(composer config cache-files-dir)"

- name: Cache dependencies
        uses: actions/cache@v2
        with:
          path: ${{ steps.composercache.outputs.dir }}
          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
          restore-keys: ${{ runner.os }}-composer-

- name: "Install latest dependencies"
        run: "composer update ${{ env.COMPOSER_FLAGS }}"

- name: Run PHPStan
        # Locked to phpunit 7.5 here as newer ones have void return types which break inheritance
        run: |
          composer require --dev phpunit/phpunit:^7.5.20 --with-all-dependencies ${{ env.COMPOSER_FLAGS }}
          vendor/bin/phpstan analyse