AsseticBundle\Service::setAssetManager PHP Метод

    public function setAssetManager(AssetManager $assetManager)
    {
        $this->assetManager = $assetManager;
    }

 public function testSetAssetManager()
 {
     $value = new \Assetic\AssetManager();
     $result = $this->object->setAssetManager($value);
     $this->assertNull($result);
     $this->assertSame($value, $this->object->getAssetManager());
 }