ci: add PHPUnit workflow (Shopware 6.7 + trunk matrix)

.github/workflows/php.yml

@@ -0,0 +1,52 @@
+name: PHP
+
+on:
+  pull_request:
+    paths:
+      - '**/*.php'
+      - composer.json
+      - phpunit.xml
+      - .github/workflows/php.yml
+  push:
+    branches:
+      - main
+    paths:
+      - '**/*.php'
+      - composer.json
+      - phpunit.xml
+      - .github/workflows/php.yml
+  workflow_dispatch:
+  schedule:
+    # nightly, to catch upstream Shopware changes that break the plugin
+    - cron: '17 3 * * *'
+
+jobs:
+  phpunit:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        shopware-version:
+          # Latest stable 6.7 minor and trunk (6.8 development), matching the
+          # composer constraint "~6.7.0 || ~6.8.0". Branch refs are resolved by
+          # the shopware-version action; there is no rolling "6.7.x" branch.
+          - '6.7.13.x'
+          - 'trunk'
+    steps:
+      - name: Setup Extension
+        uses: shopware/github-actions/setup-extension@main
+        with:
+          extensionName: ${{ github.event.repository.name }}
+          shopwareVersion: ${{ matrix.shopware-version }}
+          extraRepositories: |-
+            {
+              "local-plugins": {
+                "type": "path",
+                "url": "custom/plugins/*"
+              }
+            }
+
+      - name: Run PHPUnit
+        uses: shopware/github-actions/phpunit@main
+        with:
+          extensionName: ${{ github.event.repository.name }}