test(downloads): bootstrap PHPUnit with release counter coverage

.github/workflows/phpunit.yml

@@ -0,0 +1,26 @@
+name: PHPUnit
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  phpunit:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up php 8.3
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.3
+          coverage: none
+
+      - name: Install Composer dependencies
+        run: composer install --prefer-dist --no-interaction --no-progress --no-scripts
+
+      - name: Run PHPUnit
+        run: composer test

.github/workflows/preview.yml

@@ -2,7 +2,9 @@ name: Deploy PR previews
 
 on: pull_request
 
-concurrency: preview-${{ github.ref }}
+concurrency:
+  group: site-preview-deploy
+  cancel-in-progress: false
 
 jobs:
   deploy-preview:

.gitignore

@@ -16,6 +16,7 @@ npm-debug.log
 /source/assets/compiled/
 /source/assets/build/
 /source/hot
+/.phpunit.cache/
 
 .env
 docker-compose.override.yml

composer.json

@@ -10,9 +10,18 @@
         "nesbot/carbon": "^3.3",
         "samdark/sitemap": "^3.0"
     },
+    "require-dev": {
+        "phpunit/phpunit": "^11.5"
+    },
     "autoload": {
         "psr-4": {
-            "App\\Listeners\\": "listeners"
+            "App\\Listeners\\": "listeners",
+            "App\\Support\\": "support/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "Tests\\": "tests/"
         }
     },
     "scripts": {
@@ -25,6 +34,9 @@
         "dev": [
             "npm run watch"
         ],
+        "test": [
+            "vendor/bin/phpunit --colors=always"
+        ],
         "prod": [
             "npm run prod"
         ]