Provides valid relative URLs
public function providerTestValidRelativeData() {
$data = array(
'paren(the)sis',
'index.html#pagetop',
'index.php/node',
'index.php/node?param=false',
'login.php?do=login&style=%23#pagetop',
);
return $this
->dataEnhanceWithPrefix($data);
}