Helper function for the testMenuName() test. Used to change the menu_name parameter of a menu.
$new_name: If set, will change the menu_name value.
The menu_name value to use.
function menu_test_menu_name($new_name = '') {
static $name = 'original';
if ($new_name) {
$name = $new_name;
}
return $name;
}