<?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);
    });
});