phpOMS/tests/Utils/RnG/StringUtilsTest.php

<?php
/**
 * Orange Management
 *
 * PHP Version 7.2
 *
 * @package    tests
 * @copyright  Dennis Eichhorn
 * @license    OMS License 1.0
 * @version    1.0.0
 * @link       http://website.orange-management.de
 */

namespace phpOMS\tests\Utils\RnG;

use phpOMS\Utils\RnG\StringUtils;

class StringUtilsTest extends \PHPUnit\Framework\TestCase
{
    /**
     * @slowThreshold 1500
     */
    public function testStrings()
    {
        $haystack    = [];
        $outOfBounds = false;
        $randomness  = 0;

        for ($i = 0; $i < 10000; ++$i) {
            $random = StringUtils::generateString(5, 12, '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*()_?><|;"');

            if (\strlen($random) > 12 || \strlen($random) < 5) {
                $outOfBounds = true;
            }

            if (\in_array($random, $haystack)) {
                $randomness++;
            }

            $haystack[] = $random;
        }

        self::assertFalse($outOfBounds);
        self::assertLessThan(5, $randomness);
    }
}