Run tests on Github Actions

.github/workflows/php.yml

@@ -0,0 +1,48 @@
+name: CI
+
+on:
+  push:
+    branches: [ master, develop ]
+  pull_request:
+    branches: [ master, develop ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        php-versions: ['5.6', '7.0', '7.1', '7.2', '7.3', '7.4']
+    name: Tests with PHP ${{ matrix.php-versions }}
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php-versions }}
+      env:
+        COMPOSER_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Validate composer
+      run: composer validate
+
+    - name: Cache Composer packages
+      id: composer-cache
+      uses: actions/cache@v2
+      with:
+        path: vendor
+        key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-composer-
+    - name: Install dependencies
+      if: steps.composer-cache.outputs.cache-hit != 'true'
+      run: composer install --prefer-dist --no-interaction
+
+    - name: Run unit tests suite
+      run: vendor/bin/phpunit
+
+    - name: Run code style suite
+      run: vendor/bin/phpcs --standard=Magento2 Magento2/ --extensions=php