public function testCustomAdMargin()
{
$this->settings->set('ad_margin', '20');
$builder = new Advertising_Settings($this->content, $this->settings);
$result = $builder->to_array();
$this->assertEquals(2, count($result));
$this->assertEquals(1, $result['frequency']);
$this->assertEquals(1, count($result['layout']));
$this->assertEquals(20, $result['layout']['margin']['top']);
$this->assertEquals(20, $result['layout']['margin']['bottom']);
}
