<?php

declare(strict_types=1);

namespace Blax\ReactPhpKernel\Tests;

use Blax\ReactPhpKernel\Server\SocketServerFactory;
use PHPUnit\Framework\TestCase;
use React\EventLoop\StreamSelectLoop;
use React\Socket\SocketServer;

final class SocketServerFactoryTest extends TestCase
{
    public function test_creates_a_plain_tcp_listener(): void
    {
        $server = SocketServerFactory::create('127.0.0.1:0', new StreamSelectLoop);

        $this->assertInstanceOf(SocketServer::class, $server);
        $this->assertStringStartsWith('tcp://127.0.0.1:', (string) $server->getAddress());

        $server->close();
    }

    public function test_binds_an_ephemeral_port_that_can_be_read_back(): void
    {
        $server = SocketServerFactory::create('127.0.0.1:0', new StreamSelectLoop);

        $address = (string) $server->getAddress();
        $port = (int) parse_url($address, PHP_URL_PORT);

        $this->assertGreaterThan(0, $port, 'an ephemeral port should have been assigned');

        $server->close();
    }
}