How to set mock relations in Laravel?

Question

Laravel

I deal with tests in Laravel, I ran into a problem:
There is a model (model 1) - I can easily replace it with an instance from the factory
But this model has a hasMany-relation (model 2), it would also need to be replaced
How can this be organized?

Answer 1

class AlbumTest extends TestCase
{
    use DatabaseMigrations;

    public function test()
    {
        $album = factory('Album')->create();

        $songs = new Collection([
            factory('Song')->make(['duration' => 291]),
            factory('Song')->make(['duration' => 123]),
            factory('Song')->make(['duration' => 100]),
        ]);

        $album->songs()->saveMany($songs);
    }
}