Add GitHub Actions workflow

Author: kargnas

.github/workflows/tests.yml

@@ -0,0 +1,49 @@
+name: Tests
+
+on:
+  push:
+    branches:
+      - master
+      - "*.x"
+  pull_request:
+  schedule:
+    - cron: "0 0 * * *"
+
+permissions:
+  contents: read
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: true
+      matrix:
+        php: [8.2, 8.3, 8.4]
+
+    name: PHP ${{ matrix.php }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: dom, curl, libxml, mbstring, zip, pcntl, pdo, sqlite, pdo_sqlite
+          coverage: none
+
+      - name: Install Composer dependencies
+        run: composer install --prefer-dist --no-interaction --no-progress
+
+      - name: Clear caches
+        run: |
+          rm -rf .phpunit.cache
+        continue-on-error: true
+
+      - name: Check Pest installation
+        run: ls -la vendor/bin/ && cat vendor/bin/pest
+
+      - name: Execute tests
+        run: cd $GITHUB_WORKSPACE && vendor/bin/pest tests