StubRandomNumberGenerator.php

<?php
declare(strict_types=1);

namespace Braddle\Licence;

class StubRandomNumberGenerator implements RandomNumberGenerator
{
    function createRandomNumber(int $numberOfDigits): string
    {
        $numbers = '';

        for ($i = 0; $i < $numberOfDigits; $i++) {
            $numbers = $numbers . '9';
        }

        return $numbers;
    }
}