Set up a CI pipeline with PHPUnit tests

.github/workflows/ci.yml

@@ -0,0 +1,27 @@
+name: CI
+on:
+  push:
+    branches:
+      - trunk
+  pull_request:
+
+jobs:
+  test-unit:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.2'
+          tools: composer:v2
+          coverage: xdebug
+
+      - name: Install Dependencies
+        run: composer install --no-interaction --prefer-dist --optimize-autoloader --ignore-platform-reqs
+
+      - name: Tests
+        run: ./vendor/bin/phpunit

composer.json

@@ -11,18 +11,20 @@
     "opis/json-schema": "^2.3"
   },
   "require-dev": {
-    "pestphp/pest": "^2.33",
     "nette/php-generator": "^4.1",
     "jane-php/json-schema": "^7.6",
-    "bamarni/composer-bin-plugin": "^1.8"
+    "bamarni/composer-bin-plugin": "^1.8",
+    "phpunit/phpunit": "^6.5"
   },
   "config": {
     "optimize-autoloader": true,
     "preferred-install": "dist",
     "allow-plugins": {
-      "pestphp/pest-plugin": true,
       "php-http/discovery": true,
       "bamarni/composer-bin-plugin": true
+    },
+    "platform": {
+      "php": "8.2"
     }
   },
   "autoload": {