<?php

declare(strict_types=1);

namespace Tests\Unit;

use PHPUnit\Framework\TestCase;
use App\Services\TotpService;

final class TotpServiceTest extends TestCase
{
    public function test_it_generates_valid_secret(): void
    {
        $service = new TotpService();
        $secret = $service->generateSecret();
        
        $this->assertEquals(16, strlen($secret));
        $this->assertMatchesRegularExpression('/^[A-Z2-7]+$/', $secret);
    }

    public function test_it_verifies_correct_code(): void
    {
        $service = new TotpService();
        $secret = 'JBSWY3DPEHPK3PXP'; // Known secret
        
        // We can't easily test the code without a time mocker or calculation
        // but we can check if it fails with an obviously wrong code
        $this->assertFalse($service->verify($secret, '000000'));
    }
}