vendor/symfony/phpunit-bridge/ClockMock.php

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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Bridge\PhpUnit;

/**
 * @author Nicolas Grekas <p@tchwork.com>
 */
class ClockMock
{
    private static $now;

    public static function withClockMock($enable = null)
    {
        if (null === $enable) {
            return null !== self::$now;
        }

        self::$now = is_numeric($enable) ? (float) $enable : ($enable ? microtime(true) : null);
    }

    public static function time()
    {
        if (null === self::$now) {
            return \time();
        }

        return (int) self::$now;
    }

    public static function sleep($s)
    {
        if (null === self::$now) {
            return \sleep($s);
        }

        self::$now += (int) $s;

        return 0;
    }

    public static function usleep($us)
    {
        if (null === self::$now) {
            return \usleep($us);
        }

        self::$now += $us / 1000000;
    }

    public static function microtime($asFloat = false)
    {