create(); $playlistItem = PlaylistItem::factory()->create(['playlist_id' => $playlist->id]); expect($playlistItem->playlist) ->toBeInstanceOf(Playlist::class) ->id->toBe($playlist->id); }); test('playlist item belongs to plugin', function () { $plugin = Plugin::factory()->create(); $playlistItem = PlaylistItem::factory()->create(['plugin_id' => $plugin->id]); expect($playlistItem->plugin) ->toBeInstanceOf(Plugin::class) ->id->toBe($plugin->id); });