Правильно ли я пишу моки?

public function test_mp_bid_update()
    {
        $advert_id = rand(1,9);

        // mock form
        $user_data = $this->getMock('AdvertForm');
        $user_data->hash = $this->hash;

        // mock advert
        $advert = new Advert();
        $advert->id = $advert_id;

        $publisher = $this->getMockBuilder('AdvertPublisher')
                            ->setConstructorArgs([$user_data])
                            ->getMock();
        $publisher->advert = $advert;

        $event_mock = $this->getMock('CEvent');
        $event_mock->sender = $publisher;

        $event_handler = new UpdateMpBidEvent();
        $event_handler->call($event_mock);

        $updated_mp_bid = MpBid::model()->findByAttributes(['hash'=>$this->hash]);
        $this->assertEquals($advert_id, $updated_mp_bid->advert_id);


    }

<?php
class UpdateMpBidEvent
{
    public function call(CEvent $event)
    {
        $advert_id = $event->sender->advert->id;
        $hash = $event->sender->user_data->hash;
        $mp_bid_updated = MpBid::model()
                                    ->findByAttributes(['hash'=>$hash])
                                    ->updateAll(['advert_id'=>$advert_id]);
        return $mp_bid_updated;
    }
}