How can I lock a component that works with the database?

Question

Yii

Hello.
There is a method with such content. How can I lock the work with the database so that I can test such methods?

return \Yii::$app->getDb()
            ->createCommand()
            ->insert('user_package', [
                'user_id' => 1,
                'package_id' => 2,
                'created_at' => time(),
                'expired_at' => time() * 3600
            ])
            ->execute();

Answer 1

There are fixtures, here is the guide

Answer 2

You can also do this if PHPUnit.
(We make a fake object with the necessary methods)
And at the beginning
Yii::$container->set('db', $mockObject );