Run phpunit tests

Author: barryvdh

.github/workflows/run-tests.yml

@@ -0,0 +1,43 @@
+name: Unit Tests
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - "*"
+  schedule:
+  - cron: '0 0 * * *'
+
+jobs:
+  php-tests:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    env:
+      COMPOSER_NO_INTERACTION: 1
+
+    strategy:
+      matrix:
+        php: [8.*, 7.4, 7.3]
+        dependency-version: [prefer-lowest, prefer-stable]
+
+    name: P${{ matrix.php }} - ${{ matrix.dependency-version }}
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php }}
+        coverage: none
+        tools: composer
+        
+    - name: Install dependencies
+      run: |
+        composer update --${{ matrix.dependency-version }} --prefer-dist --no-progress
+
+    - name: Execute Unit Tests
+      run: vendor/bin/phpunit