public function testCmd()
{
$excepted = '0123456789-abcdefghijklmnopqrstuvwxyz_abcdefghijklmnopqrstuvwxyz';
$string = ' 0123456789-ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz йцуке ';
isSame($excepted, Filter::_($string, 'cmd'));
}