Devise\Support\Sortable\Manager::getIsMulti PHP Method

    public function getIsMulti()
    {
        return $this->Session->get($this->key . '_multisort');
    }

 public function test_it_gets_is_multi()
 {
     $Framework = new \Devise\Support\Framework();
     $Framework->Session = m::mock('Mock\\Session');
     $Framework->Session->shouldReceive('get')->times(1);
     $Manager = new Manager($Framework);
     $Manager->getIsMulti();
 }