AdamWathan\Form\Elements\FormOpen::multipart PHP Method

    public function multipart()
    {
        return $this->encodingType('multipart/form-data');
    }

 public function testMultipart()
 {
     $form = new FormOpen();
     $expected = '<form method="POST" action="" enctype="multipart/form-data">';
     $result = $form->multipart()->render();
     $this->assertEquals($expected, $result);
 }