public static function assertSame($expected, $actual, string $message = '')
    {
        self::$count += 1;

        if ($expected === $actual) {
            return;
        }
        if (!$message) {
            $message = sprintf(
                'Failed asserting that %s matches %s',
                var_export($actual, true),
                var_export($expected, true)
            );
        }
        throw new AssertionError($message);
    }