feat: CI/CD pipeline setup complete - Ansible playbooks updated, secrets configured, workflow ready

tests/Unit/Framework/Attributes/SingletonTest.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Framework\Attributes\Singleton;
+
+describe('Singleton', function () {
+    it('can be instantiated', function () {
+        $singleton = new Singleton();
+
+        expect($singleton)->toBeInstanceOf(Singleton::class);
+    });
+
+    it('is an attribute class', function () {
+        $reflection = new ReflectionClass(Singleton::class);
+        $attributes = $reflection->getAttributes(\Attribute::class);
+
+        expect($attributes)->toHaveCount(1);
+    });
+
+    it('targets class only', function () {
+        $reflection = new ReflectionClass(Singleton::class);
+        $attribute = $reflection->getAttributes(\Attribute::class)[0];
+        $attributeInstance = $attribute->newInstance();
+
+        expect($attributeInstance->flags)->toBe(\Attribute::TARGET_CLASS);
+    });
+});