public function testRenderAsMultiple()
{
$dropdown = Model\Category::renderAsMultiple();
$this->assertRegExp('/' . $this->_get_pattern('multiple') . '/', $dropdown);
// test where
$dropdown = Model\Category::whereRaw("name like '%i%' OR name like '%a%'")->renderAsMultiple();
$this->assertRegExp('/' . $this->_get_pattern('dropdown_single_option') . '/', $dropdown);
}