<?php

declare(strict_types=1);

namespace App\Tests\Unit;

use PHPUnit\Framework\TestCase;

/**
 * Class EventSubscriberTestCase.
 */
abstract class EventSubscriberTestCase extends TestCase
{
    /**
     * @test
     * @dataProvider provideSubscribedEvents
     */
    public function subscribesEvent(string $eventName): void
    {
        $events = $this->getSubscriberClassName()::getSubscribedEvents(); // @phpstan-ignore-line
        if (is_iterable($events) && !\is_array($events)) {
            $events = iterator_to_array($events);
        }
        self::assertArrayHasKey($eventName, $events);
    }

    /**
     * @phpstan-return iterable<string, array<string>>
     */
    public function provideSubscribedEvents(): iterable
    {
        $subscribe = $this->shouldSubscribeEvents();

        foreach ($subscribe as $event) {
            yield $event => [$event];
        }
    }

    /**
     * @phpstan-return iterable<array-key, string>
     */
    abstract protected function shouldSubscribeEvents(): iterable;

    /**
     * @return class-string
     */
    abstract protected function getSubscriberClassName(): string;
}

###

<?php

declare(strict_types=1);

namespace App\Tests\Unit\EventSubscriber;

use App\Tests\Unit\EventSubscriberTestCase;
use Symfony\Component\HttpKernel\KernelEvents;

/**
 * @internal
 */
final class MyKernelControllerEventSubscriberTest extends EventSubscriberTestCase
{
    protected function shouldSubscribeEvents(): iterable
    {
        yield KernelEvents::CONTROLLER;
    }

    protected function getSubscriberClassName(): string
    {
        return MyKernelControllerEventSubscriber::class;
    }
}